id int64 5 1.93M | title stringlengths 0 128 | description stringlengths 0 25.5k | collection_id int64 0 28.1k | published_timestamp timestamp[s] | canonical_url stringlengths 14 581 | tag_list stringlengths 0 120 | body_markdown stringlengths 0 716k | user_username stringlengths 2 30 |
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1,870,745 | DAFTAR | [](https://bungjpjaya2.online/register?ref=MCANAB01468 | 0 | 2024-05-30T20:03:28 | https://dev.to/pastijaya/daftar-bgd | [](https://bungjpjaya2.online/register?ref=MCANAB01468 | pastijaya | |
1,870,743 | Software Design and Architecture: Understanding Their Roles and Challenges in Development | Well, I'm starting to read the excellent book "Clean Architecture: A Craftsman's Guide to Software... | 0 | 2024-05-30T19:58:01 | https://dev.to/mathsena/software-design-and-architecture-understanding-their-roles-and-challenges-in-development-4jkf | Well, I'm starting to read the excellent book "Clean Architecture: A Craftsman's Guide to Software Structure and Design" by author Robert C. Martin, which is why I decided to write a bit about some important themes described in the work.
We start with an important subject, which is the difference between Software Design and Architecture.
Effective software development requires a clear understanding of two fundamental concepts: software design and architecture. Although often used interchangeably, these terms describe distinct yet complementary aspects of the software creation process. To illustrate these differences, we can compare them to the different systems comprising a human body, where each part plays an essential role, but all work in harmony to ensure the proper functioning of the whole.
### Differences Between Software Design and Architecture
**Software architecture** is like the skeleton of the human body: a structure defining the arrangement and interconnection of the main components, just as bones support and connect all parts of the body. In the context of software, architecture involves high-level decisions about the systems and platforms to be used, the organization of code into modules or services, and the communication patterns between these components.
On the other hand, **software design** is comparable to the nervous system, responsible for ensuring that signals move efficiently throughout the body, controlling specific functions. In software, this translates to detailed specifications on how each part of the system should operate and interact, detailing algorithms, user interface patterns, and internal data management.
### Objectives and Importance
The goal of **software architecture** is to create a robust and scalable foundation that supports the system as a whole, ensuring that the software can grow and adapt without compromising its functionality. Effective architecture facilitates the maintenance and expansion of software, while poor architecture can lead to a system that is difficult to understand and costly to modify.
**Software design**, in contrast, aims to maximize the efficiency and quality of the system's internal operations. Good design improves code readability, simplifies debugging and maintenance, and reduces the risk of errors. It ensures that each software component functions correctly within the context established by the architecture.
### Costs and Examples
Investing in good software architecture and design can be significant, but the costs of neglecting them are often higher. For example, the software incident with Obamacare in the United States showed how poorly planned architecture can result in system failures and exorbitant repair costs. It is estimated that the costs to fix the issues exceeded several times the original development budget.
### Failures in Software Development
Failures in delivering high-quality software often occur due to several factors, such as **overconfidence**, **haste**, and **market pressure**. Developers might overestimate their ability to create complex systems within tight deadlines, resulting in poorly conceived architectures and rushed designs. The pressure to release products quickly can lead to poorly considered design and architecture decisions, negatively impacting the quality and sustainability of the software.
### The Importance of Clean Code
Clean, well-organized code is crucial for the maintenance and scalability of software. It allows other developers to quickly understand the system, reducing the time needed to implement new features or fix bugs. Moreover, clean code facilitates testing, which is essential for ensuring the stability and reliability of software over time.
### Conclusion
Software architecture and design are critical components that determine the success of a development project. Like a human body, each aspect must function in harmony to ensure the health and effectiveness of the system. Understanding these concepts and applying them carefully is key to avoiding the costs and failures associated with software development, culminating in the creation of durable and effective solutions. | mathsena | |
1,870,740 | Overview: Express.js Framework Middleware's | One of the most important things about Express.js is how minimal this framework is. Known for its... | 0 | 2024-05-30T19:54:58 | https://dev.to/buildwebcrumbs/overview-expressjs-framework-middlewares-4o65 | webdev, javascript, backend, express | One of the most important things about **Express.js** is how minimal this framework is. Known for its simplicity and performance, Express.js is one of the most popular frameworks in the **Node.js** ecosystem.
Let's dive into interesting parts:
Using **Middleware** functions, is possible to access the request and response objects, making it easy to add functionalities like logging, authentication, and data parsing. Check the example:
```js
const requestLogger = (req, res, next) => {
console.log(`${req.method} ${req.url}`);
next();
};
```
The **next()** function, is responsible to pass the control for the next middleware. Without calling this function, the request will not proceed to the next middleware or route handler, and the request-response cycle will be left hanging.
You can also apply this **middleware** for all the routes, using only a line of code.
```js
app.use(requestLogger);
```
This show to how **Express.js** is really simple to read! 😁
## Testing
_This is my favorite part, let's test it!!_
Adding some basic routes to test the **middleware**
```js
app.get('/', (req, res) => {
res.send('Hello, World!');
});
app.get('/about', (req, res) => {
res.send('About Page');
});
```
## Follow the full code for test the Middleware functions:
**Note:** Create a file 'index.js' and add the full code.
```js
const express = require('express');
const app = express();
const port = 3000;
const requestLogger = (req, res, next) => {
console.log(`${req.method} ${req.url}`);
next(); // Pass control to the next middleware function
};
app.use(requestLogger);
app.get('/', (req, res) => {
res.send('Hello, World!');
});
app.get('/about', (req, res) => {
res.send('About Page');
});
app.listen(port, () => {
console.log(`Server running at http://localhost:${port}/`);
});
```
## IMPORTANT
Before run check if the port in the `const port` is in use.
Run in the terminal:
```js
node app.js
```
**Thank you, Please Follow:** [Webcrumbs](https://webcrumbs.org)
_Bibliography: [Express.js Docs](https://expressjs.com/)_ | m4rcxs |
1,870,738 | The Critical Role of Mobile Optimization in Web Design and SEO | As the number of mobile users continues to surge, the importance of mobile optimization in web... | 0 | 2024-05-30T19:51:42 | https://dev.to/annamariapascual/the-critical-role-of-mobile-optimization-in-web-design-and-seo-2eeb | webdev | <p><img src="https://media.licdn.com/dms/image/C5612AQHxWDCLG5a8Dw/article-cover_image-shrink_720_1280/0/1570474066501?e=2147483647&v=beta&t=cXB17ofg5P3gFHuViWv_4tagHw5o-xv3Eu0EJsknZ3I" alt="How do I optimize my website for mobile?" width="672" height="378" /></p>
<p>As the number of mobile users continues to surge, the importance of mobile optimization in web design and SEO has never been more pronounced. A mobile-optimized website (<strong><a href="https://agenciafort.com.br/criacao-de-sites/">criação de sites</a></strong>) is not just a convenience; it’s a necessity. Here’s why mobile optimization should be at the forefront of your digital strategy:</p>
<p><strong>Mobile Usage Trends</strong> The mobile revolution has changed the way people access the internet. With smartphones becoming increasingly prevalent, more users are <strong>browsing</strong> the web on-the-go. This shift in user behavior means that websites must be designed with mobile users in mind to provide a seamless and accessible experience.</p>
<p><strong>Mobile-First Design Philosophy</strong> Adopting a mobile-first design philosophy involves creating a website with the mobile user’s needs as the primary focus. This approach ensures that the most critical information and functionality are presented in a clear, concise manner on smaller screens. It’s about prioritizing content and features that matter most to mobile users.</p>
<p><strong>Impact on User Experience (UX)</strong> Mobile optimization directly impacts UX. A mobile-friendly website loads quickly, has touch-friendly navigation, and scales content appropriately for smaller screens.<strong> <a href="https://agenciafort.com.br/">https://agenciafort.com.br</a></strong> This leads to higher user satisfaction, longer engagement times, and lower bounce rates, which are all positive signals to search engines.</p>
<p><strong>SEO Advantages</strong> Google and other search engines have recognized the shift towards mobile usage and have adjusted their algorithms accordingly. Mobile optimization is now a significant ranking factor. Websites that provide a superior mobile experience are more likely to rank higher in search results, making mobile optimization a critical component of SEO.</p>
<p><strong>Responsive Web Design</strong> Responsive web design is a technique that allows a website to adapt its layout to the screen size of the device it’s being viewed on. This flexibility ensures that whether a user is on a smartphone, tablet, or desktop, the website provides an optimal viewing experience.</p>
<p><strong>Speed Optimization</strong> Mobile users expect fast loading times. Speed optimization techniques such as image compression, caching, and minimizing code can significantly improve a website’s loading speed on mobile devices. Faster websites not only provide a better user experience but also contribute to better SEO performance.</p>
<p><strong>Local SEO and Mobile</strong> For businesses with a local presence, mobile optimization is even more critical. Mobile users often search for local information, and a mobile-optimized site with local SEO can drive foot traffic to physical locations.</p>
<p>In conclusion, mobile optimization is a cornerstone of modern web design and SEO. It enhances user experience, improves search engine rankings, and caters to the growing number of users who rely on mobile devices for their internet usage. Ignoring mobile optimization is no longer an option for businesses that want to succeed online.</p> | annamariapascual |
1,870,736 | Suivi en temps réel des commits sur le tableau de bord GitHub | Apprenez à construire un tableau de bord montrant les commits GitHub en temps réel. Nous utilisons JavaScript, C3.js, et PubNub pour ce projet. | 0 | 2024-05-30T19:46:34 | https://dev.to/pubnub-fr/suivi-en-temps-reel-des-commits-sur-le-tableau-de-bord-github-p51 | Dans le domaine du développement logiciel, les graphiques C3.js en temps réel offrent un moyen efficace de surveiller l'activité au sein de votre organisation. Pour les équipes d'ingénierie, l'une des métriques à suivre est celle des commits GitHub. En explorant ce sujet, ce billet de blogue fournit un tutoriel pour vous guider à travers le processus d'utilisation de l'API de GitHub pour récupérer et afficher les données des commits GitHub dans un graphique interactif en temps réel. Nous utiliserons la puissance de HTML, Javascript, CSS, et utiliserons PubNub pour créer le tableau de bord GitHub et streamer les données de commit, tandis que C3.js aidera à la visualisation.
Pour en savoir plus sur les [graphiques C3.js en temps réel, nous avons un excellent tutoriel](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr). Maintenant, plongeons dans le vif du sujet !
Comment créer un tableau de bord GitHub en temps réel
-----------------------------------------------------
Créer un tableau de bord GitHub en temps réel implique de se connecter à diverses sources de données telles que le dépôt GitHub et de s'occuper de certaines dépendances nécessaires. Soyez conscient des mesures de cybersécurité nécessaires, comme le codage sécurisé et le cryptage des données. Il est impératif de suivre les protocoles de sécurité standard de l'industrie.
Voici un guide étape par étape :
### Ajouter un Webhook GitHub
Pour configurer le webhook, suivez les étapes suivantes :
1. Créez un dépôt GitHub ou utilisez un dépôt git existant.
2. Cliquez sur "Paramètres" sur le côté droit de la page.
3. Cliquez sur "[Webhooks](https://www.pubnub.com/learn/glossary/what-is-a-webhook/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr)" sur le côté gauche de la page.
4. Cliquez sur "Add Webhook" en haut à droite.
5. GitHub vous demandera votre mot de passe, entrez-le.
6. Sous 'Payload URL', entrez **: http://pubnub-git-hook.herokuapp.com/github/ORG-NAME/TEAM-NAME.** Remplacez ORG-NAME par le nom de votre organisation et TEAM-NAME par l'équipe qui contrôle le repo.
### Charger le tableau de bord visuel
[Visitez cette page](https://pubnub.github.io/git-commits-ui/). Vous verrez une liste de tous les commits envoyés à travers le tableau de bord PubNub - super ! Lorsque vous envoyez un de vos commits sur GitHub, vous devriez voir un message apparaître sur votre tableau de bord des commits GitHub en quelques dizaines de millisecondes, et les graphiques se mettront à jour en temps réel.
Comment nous avons construit le tableau de bord des livraisons Github
---------------------------------------------------------------------
Le tableau de bord est un mélange de GitHub, du réseau de flux de données PubNub et des visualisations graphiques D3 alimentées par [C3.js](https://c3js.org/). Lorsqu'un commit est poussé sur GitHub, les métadonnées du commit sont postées sur une petite instance Heroku qui les publie sur le réseau PubNub. [Nous hébergeons une page de tableau de bord sur les pages GitHub.](https://pubnub.github.io/git-commits-ui/)
Une fois que notre instance Heroku reçoit les données de validation de GitHub, elle publie un résumé de ces données sur PubNub en utilisant les clés publiques de publication/abonnement sur le canal **pubnub-git**. [Vous pouvez surveiller le canal pubnub-git via notre console de développement ici](https://www.pubnub.com/docs/console/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr).
Voici un exemple de message :
```js
{
"name":"drnugent",
"avatar_url":"https://avatars.githubusercontent.com/u/857270?v=3",
"num_commits":4,
"team":"team-pubnub",
"org":"pubnub",
"time":1430436692806,
"repo_name":"drnugent/test"
}
```
La deuxième partie de la magie se produit lorsque le tableau de bord reçoit ces informations par le biais de son **callback subscribe**. Si vous regardez la source du tableau de bord, vous verrez ce code :
```js
pubnub.subscribe({
channel: 'pubnub-git',
message: displayLiveMessage
});
```
Cet appel subscribe garantit que la fonction JavaScript **displayLiveMessage()** est appelée chaque fois qu'un message est reçu sur le canal **pubnub-git**. displayLiveMessage() ajoute la notification push de commit en haut du journal et met à jour les graphiques de visualisation C3.
Mais attendez, comment le tableau de bord est-il alimenté lorsqu'il est chargé pour la première fois ?
Tirer profit de l'API de stockage et de lecture de PubNub pour votre tableau de bord
------------------------------------------------------------------------------------
PubNub conserve un enregistrement de chaque message envoyé, et fournit aux développeurs un moyen d'accéder à ces messages sauvegardés avec l'[API Storage & Playback (History](https://www.pubnub.com/products/pubnub-platform/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr)). Plus profondément dans le tableau de bord web, vous verrez le code suivant :
```js
var displayMessages = function(ms) { ms[0].forEach(displayMessage); };
pubnub.history({
channel: 'pubnub-git',
callback: displayMessages,
count: 100
});
```
Il s'agit d'une requête visant à récupérer les 1 000 derniers messages envoyés sur le canal pubnub-git. Ainsi, même si le tableau de bord web était hors ligne lorsque ces messages ont été envoyés, il est capable de les récupérer et d'utiliser ces données pour alimenter le tableau de bord comme s'il était en ligne en permanence.
Cette fonctionnalité est particulièrement utile lorsqu'il s'agit d'appareils dont la connectivité est intermittente ou peu fiable, comme les applications mobiles sur les réseaux cellulaires ou les voitures connectées. Grâce au réseau PubNub, notre tableau de bord de visualisation ne nécessite pas de backend pour stocker l'état de l'application.
Création de votre propre tableau de bord GitHub
-----------------------------------------------
Pour commencer à construire votre tableau de bord Github, prenez le dépôt Git Commit UI sur github.com et suivez le README pour les instructions d'installation. Les demandes d'extraction sont les bienvenues dans le cadre de la collaboration avec la communauté open source.
Tendances et développements futurs en matière de tableaux de bord en temps réel
-------------------------------------------------------------------------------
Il est essentiel de garder un œil sur les dernières tendances et évolutions en matière de tableaux de bord en temps réel et de technologies connexes. Cela inclut les websockets pour la transmission de données en temps réel, l'utilisation de notifications pour un aperçu immédiat, et l'utilisation de tableaux de bord en temps réel dans divers flux de travail.
L'expérience PubNub
-------------------
PubNub a aidé de nombreux clients à réussir leurs applications en temps réel. Par exemple, le système de notifications en temps réel de LinkedIn...
S'installer
-----------
Créez un compte PubNub pour obtenir un accès immédiat et gratuit aux clés PubNub. Les dernières fonctionnalités disponibles dans votre compte PubNub incluent ...
Démarrer
--------
Notre [documentation](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr) complète [sur PubNub](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr) vous permettra d'être opérationnel en un rien de temps, quel que soit votre cas d'utilisation ou votre [SDK](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr).
PubNub offre une plateforme conviviale pour améliorer votre expérience utilisateur. Nos services sont conçus en gardant à l'esprit les développeurs pour un processus d'intégration transparent.
N'oubliez pas que nous sommes là pour rendre votre parcours de développement en temps réel plus fluide et plus efficace. Configurez l'URL de votre charge utile et commençons !
La documentation officielle et les sources faisant autorité peuvent être référencées tout au long de l'article de blog pour confirmer la validité de l'information.
Comment PubNub peut-il vous aider ?
===================================
Cet article a été publié à l'origine sur [PubNub.com](https://www.pubnub.com/blog/tracking-realtime-github-dashboard-commits/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr)
Notre plateforme aide les développeurs à construire, livrer et gérer l'interactivité en temps réel pour les applications web, les applications mobiles et les appareils IoT.
La base de notre plateforme est le réseau de messagerie en temps réel le plus grand et le plus évolutif de l'industrie. Avec plus de 15 points de présence dans le monde, 800 millions d'utilisateurs actifs mensuels et une fiabilité de 99,999 %, vous n'aurez jamais à vous soucier des pannes, des limites de concurrence ou des problèmes de latence causés par les pics de trafic.
Découvrez PubNub
----------------
Découvrez le [Live Tour](https://www.pubnub.com/tour/introduction/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr) pour comprendre les concepts essentiels de chaque application alimentée par PubNub en moins de 5 minutes.
S'installer
-----------
Créez un [compte PubNub](https://admin.pubnub.com/signup/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr) pour un accès immédiat et gratuit aux clés PubNub.
Commencer
---------
La [documentation PubNub](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr) vous permettra de démarrer, quel que soit votre cas d'utilisation ou votre [SDK](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=fr). | pubnubdevrel | |
1,870,735 | Business Showcase Innovations for Success | Crafting a compelling business presentation is an art form that requires both strategic planning and... | 0 | 2024-05-30T19:43:14 | https://dev.to/businesspresentation/business-showcase-innovations-for-success-55ki | Crafting a compelling business presentation is an art form that requires both strategic planning and captivating visuals. It's about not only delivering information but also igniting the interest of your audience and inspiring action.
However, let's face it: starting from scratch with a blank slide can be daunting. That's where business PowerPoint templates come in – they provide a strong foundation to build upon, saving you valuable time and effort.
Finding the Perfect Template: Match Your Message to the Design
Business PowerPoint templates come in a wide array, offering a variety of styles and functionalities. However, with so many options to choose from, how do you select the perfect one? The key lies in aligning the template's design with your presentation's core message and objective.
Here are some key considerations:
Presentation Type: Are you delivering a formal pitch deck to investors, a project update to colleagues, or a sales presentation to potential clients? Different presentation types benefit from distinct design aesthetics. For instance, a pitch deck might favor a sleek, modern template, while a project update might utilize a more process-oriented layout.
Target Audience: Who are you presenting to? Understanding your audience's expectations is crucial. A presentation for a tech-savvy audience might leverage a data-heavy template with interactive elements. Conversely, a presentation for a more traditional audience might prioritize a classic, clean design.
Brand Identity: Does your company have established branding guidelines? If so, consider templates that complement your brand's color palette, fonts, and overall visual identity. Maintaining brand consistency fosters recognition and trust with your audience.
Beyond Aesthetics: Leveraging Templates for Maximum Impact
While a well-designed template provides a strong visual foundation, it's just the first step. To create a truly impactful presentation, here are some additional tips:
Content is King: Remember, even the most stunning template can't compensate for weak content. Focus on crafting a clear, concise, and engaging message that resonates with your audience.
Data Visualization: Infographics, charts, and graphs can effectively communicate complex information in a visually appealing way. Utilize the template's built-in charts or incorporate high-quality visuals to enhance your presentation's clarity.
Storytelling Power: Facts and figures are important, but weaving them into a compelling narrative is key. Use the template's layout to guide your storytelling, strategically placing key points and visuals to keep your audience engaged.
Practice Makes Perfect: Rehearse your delivery beforehand. A polished presentation, delivered with confidence, will leave a lasting impression on your audience.
[Business PowerPoint templates](https://simplified.com/ai-presentation-maker/business
) are a valuable tool for anyone creating business presentations. By selecting the right template and focusing on strong content delivery, you can craft presentations that not only inform but also inspire and influence your audience. | businesspresentation | |
1,870,734 | Verfolgung von GitHub Dashboard Commits in Echtzeit | Lernen Sie, ein Dashboard zu erstellen, das GitHub-Commits in Echtzeit anzeigt. Wir verwenden JavaScript, C3.js und PubNub für dieses Projekt. | 0 | 2024-05-30T19:41:33 | https://dev.to/pubnub-de/verfolgung-von-github-dashboard-commits-in-echtzeit-3a47 | Im Bereich der Softwareentwicklung bieten C3.js-Echtzeitdiagramme eine effektive Möglichkeit zur Überwachung der Aktivitäten in Ihrem Unternehmen. Für Entwicklungsteams ist eine der verfolgbaren Metriken GitHub Commits. Dieser Blog-Beitrag bietet ein Tutorial, das Sie durch den Prozess der Nutzung der GitHub-API führt, um GitHub-Commit-Daten in einem interaktiven Echtzeitdiagramm abzurufen und anzuzeigen. Wir nutzen die Möglichkeiten von HTML, Javascript und CSS und verwenden PubNub, um das GitHub-Dashboard zu erstellen und die Commit-Daten zu streamen, während C3.js bei der Visualisierung hilft.
Um mehr über [Echtzeit-C3.js-Diagramme](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) zu erfahren [, haben wir ein großartiges Tutorial](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de). Jetzt können wir eintauchen!
Wie man ein Echtzeit-GitHub-Dashboard erstellt
----------------------------------------------
Um ein GitHub-Dashboard in Echtzeit zu erstellen, müssen Sie eine Verbindung zu verschiedenen Datenquellen wie dem GitHub-Repository herstellen und sich um einige notwendige Abhängigkeiten kümmern. Achten Sie auf die notwendigen Cybersicherheitsmaßnahmen wie sichere Kodierung und Datenverschlüsselung. Die Einhaltung der branchenüblichen Sicherheitsprotokolle ist unabdingbar.
Hier ist eine Schritt-für-Schritt-Anleitung:
### Hinzufügen eines GitHub-Webhooks
Führen Sie folgende Schritte aus, um den Webhook einzurichten:
1. Erstellen Sie ein GitHub-Repository oder verwenden Sie ein vorhandenes Git-Repository.
2. Klicken Sie auf "Einstellungen" auf der rechten Seite der Seite
3. Klicken Sie auf "[Webhooks](https://www.pubnub.com/learn/glossary/what-is-a-webhook/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de)" auf der linken Seite der Seite
4. Klicken Sie oben rechts auf "Webhook hinzufügen".
5. GitHub fragt Sie nach Ihrem Passwort, geben Sie es ein
6. Geben Sie unter 'Payload URL' ein: **http://pubnub-git-hook.herokuapp.com/github/ORG-NAME/TEAM-NAME.** Ersetzen Sie ORG-NAME durch den Namen Ihrer Organisation und TEAM-NAME durch das Team, das das Repo kontrolliert.
### Laden Sie das Visual Dashboard
[Besuchen Sie diese Seite](https://pubnub.github.io/git-commits-ui/). Sie werden eine Liste aller Commits sehen, die über das PubNub-Dashboard gesendet wurden - toll! Wenn Sie einen Ihrer Commits an GitHub senden, sollten Sie innerhalb weniger Millisekunden eine Nachricht auf Ihrem GitHub-Commit-Dashboard sehen, und die Diagramme werden in Echtzeit aktualisiert.
Wie wir das Github Commit Dashboard aufgebaut haben
---------------------------------------------------
Das Dashboard ist ein Mashup aus GitHub, dem PubNub Data Stream Network und D3-Diagrammvisualisierungen, die von [C3.js](https://c3js.org/) unterstützt werden. Wenn ein Commit auf GitHub gepusht wird, werden die Commit-Metadaten an eine kleine Heroku-Instanz gesendet, die sie im PubNub-Netzwerk veröffentlicht. [Wir hosten die Dashboard-Seite auf den GitHub-Seiten.](https://pubnub.github.io/git-commits-ui/)
Sobald unsere Heroku-Instanz die Commit-Daten von GitHub erhält, veröffentlicht sie eine Zusammenfassung dieser Daten auf PubNub unter Verwendung der öffentlichen Publish/Subscribe-Schlüssel im Kanal **pubnub-git**. [Sie können den pubnub-git-Kanal über unsere Entwicklerkonsole hier überwachen](https://www.pubnub.com/docs/console/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de).
Hier ist ein Beispiel für die Nutzlast einer Nachricht:
```js
{
"name":"drnugent",
"avatar_url":"https://avatars.githubusercontent.com/u/857270?v=3",
"num_commits":4,
"team":"team-pubnub",
"org":"pubnub",
"time":1430436692806,
"repo_name":"drnugent/test"
}
```
Die zweite Hälfte der Magie geschieht, wenn das Dashboard diese Informationen über seinen **Subscribe-Callback** erhält. Wenn Sie sich den Quelltext des Dashboards ansehen, werden Sie diesen Code sehen:
```js
pubnub.subscribe({
channel: 'pubnub-git',
message: displayLiveMessage
});
```
Dieser subscribe-Aufruf stellt sicher, dass die JavaScript-Funktion **displayLiveMessage()** jedes Mal aufgerufen wird, wenn eine Nachricht auf dem **pubnub-git-Kanal** empfangen wird. displayLiveMessage() fügt die Commit-Push-Benachrichtigung an den Anfang des Protokolls und aktualisiert die C3-Visualisierungsdiagramme.
Aber Moment, wie wird das Dashboard beim ersten Laden gefüllt?
Die Nutzung der PubNub Storage & Playback API für Ihr Dashboard
---------------------------------------------------------------
PubNub speichert jede gesendete Nachricht und bietet Entwicklern mit der [Storage & Playback (History) API](https://www.pubnub.com/products/pubnub-platform/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) eine Möglichkeit, auf diese gespeicherten Nachrichten zuzugreifen. Tiefer im Web-Dashboard werden Sie den folgenden Code sehen:
```js
var displayMessages = function(ms) { ms[0].forEach(displayMessage); };
pubnub.history({
channel: 'pubnub-git',
callback: displayMessages,
count: 100
});
```
Dies ist eine Anfrage zum Abrufen der letzten 1.000 Nachrichten, die über den pubnub-git-Kanal gesendet wurden. Auch wenn das Web-Dashboard zum Zeitpunkt des Versands dieser Nachrichten offline war, kann es sie abrufen und diese Daten verwenden, um das Dashboard so aufzufüllen, als ob es ständig online wäre.
Diese Funktion ist besonders nützlich, wenn es um Geräte mit unterbrochener oder unzuverlässiger Konnektivität geht, wie z. B. mobile Anwendungen in Mobilfunknetzen oder vernetzte Autos. Dank des PubNub-Netzwerks benötigt unser Visualisierungs-Dashboard kein Backend, um den Zustand der Anwendung zu speichern.
Bauen Sie Ihr eigenes GitHub-Dashboard
--------------------------------------
Um mit der Erstellung Ihres Github-Dashboards zu beginnen, forken Sie das Git Commit UI-Repository auf github.com und folgen Sie den README-Anweisungen zur Einrichtung. Pull Requests sind als Teil der Open-Source-Community-Zusammenarbeit willkommen.
Zukünftige Trends und Entwicklungen bei Echtzeit-Dashboards
-----------------------------------------------------------
Es ist wichtig, die letzten Trends und Entwicklungen bei Echtzeit-Dashboards und verwandten Technologien im Auge zu behalten. Dazu gehören Websockets für die Datenübertragung in Echtzeit, die Verwendung von Benachrichtigungen für sofortige Einblicke und die Verwendung von Echtzeit-Dashboards in verschiedenen Arbeitsabläufen.
Erfahrung mit PubNub
--------------------
PubNub hat zahlreichen Kunden geholfen, mit ihren Echtzeitanwendungen erfolgreich zu sein. Zum Beispiel das Echtzeit-Benachrichtigungssystem von LinkedIn...
Einrichten
----------
Melden Sie sich für ein PubNub-Konto an, um sofort und kostenlos Zugang zu den PubNub-Schlüsseln zu erhalten. Die neuesten Funktionen in Ihrem PubNub-Konto umfassen ...
Anfangen
--------
Mit unseren umfassenden [PubNub-Dokumenten](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) sind Sie im Handumdrehen startklar, unabhängig von Ihrem Anwendungsfall oder [SDK](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de).
PubNub bietet eine benutzerfreundliche Plattform zur Verbesserung der Benutzerfreundlichkeit. Unsere Dienste sind so konzipiert, dass sie Entwicklern einen nahtlosen Integrationsprozess ermöglichen.
Vergessen Sie nicht, dass wir hier sind, um Ihre Echtzeit-Entwicklungsreise reibungsloser und effizienter zu gestalten. Richten Sie Ihre Nutzdaten-URL ein und lassen Sie uns beginnen!
Offizielle Dokumentationen und maßgebliche Quellen können im gesamten Blogpost referenziert werden, um die Gültigkeit der Informationen zu bestätigen.
Wie kann PubNub Ihnen helfen?
=============================
Dieser Artikel wurde ursprünglich auf [PubNub.com](https://www.pubnub.com/blog/tracking-realtime-github-dashboard-commits/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) veröffentlicht.
Unsere Plattform unterstützt Entwickler bei der Erstellung, Bereitstellung und Verwaltung von Echtzeit-Interaktivität für Webanwendungen, mobile Anwendungen und IoT-Geräte.
Die Grundlage unserer Plattform ist das größte und am besten skalierbare Echtzeit-Edge-Messaging-Netzwerk der Branche. Mit über 15 Points-of-Presence weltweit, die 800 Millionen monatlich aktive Nutzer unterstützen, und einer Zuverlässigkeit von 99,999 % müssen Sie sich keine Sorgen über Ausfälle, Gleichzeitigkeitsgrenzen oder Latenzprobleme aufgrund von Verkehrsspitzen machen.
PubNub erleben
--------------
Sehen Sie sich die [Live Tour](https://www.pubnub.com/tour/introduction/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) an, um in weniger als 5 Minuten die grundlegenden Konzepte hinter jeder PubNub-gestützten App zu verstehen
Einrichten
----------
Melden Sie sich für einen [PubNub-Account](https://admin.pubnub.com/signup/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) an und erhalten Sie sofort kostenlosen Zugang zu den PubNub-Schlüsseln
Beginnen Sie
------------
Mit den [PubNub-Dokumenten](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) können Sie sofort loslegen, unabhängig von Ihrem Anwendungsfall oder [SDK](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=de) | pubnubdevrel | |
1,870,806 | Publicando imagen docker a repositorio con Azure Devops | En este ejemplo vamos a subir una imagen docker al repositorio de dockerhub con Azure Devops. Este... | 0 | 2024-05-30T20:56:48 | https://www.ahioros.info/2024/05/subir-imagen-docker-repositorio-con.html | azure, devops, linux, spanish | ---
title: Publicando imagen docker a repositorio con Azure Devops
published: true
date: 2024-05-30 19:39:00 UTC
tags: Azure,DevOps,Linux,spanish
canonical_url: https://www.ahioros.info/2024/05/subir-imagen-docker-repositorio-con.html
---
En este ejemplo vamos a subir una imagen docker al repositorio de dockerhub con Azure Devops.
Este manual/tutorial es la continuación de [Cómo conectar un pipeline de Azure DevOps Pipelines con DockerHub](https://www.ahioros.info/2024/05/como-conectar-un-pipeline-de-azure.html) y [Creando una imagen docker de una aplicación en react](https://www.ahioros.info/2024/05/creando-una-imagen-docker-de-una.html) si no los has leído por favor hazlo para que te des una idea de dónde nos quedamos.
Ya que hemos creado nuestro archivo Dockerfile y .dockerignore podemos continuar. Básicamente lo que haremos aquí es:
1. Vamos a poner en nuestro pipeline la creación de una imagen docker de una aplicación en react.
2. Luego vamos a subir nuestra imagen en nuestro repositorio de dockerhub.
<!-- agrega el botón leer más -->
Estas dos tareas las haremos en un solo paso (task en este caso).
Tomamos nuestro archivo yaml del pipeline creado anteriormente y le agregamos la tarea de **buildAndPush**.
```yaml
pr:
branches:
include:
- "*"
pool:
vmImage: ubuntu-latest
stages:
- stage: LoginAndLogout
jobs:
- job: buildandpush
steps:
- task: Docker@2
displayName: Login
inputs:
command: login
containerRegistry: docker-hub-test
- task: Docker@2
displayName: BuildAndPush
inputs:
command: buildAndPush
containerRegistry: docker-hub-test
repository: ahioros/rdicidr
tags: latest
- task: Docker@2
displayName: Logout
inputs:
command: logout
containerRegistry: docker-hub-test
```
**Nota** : En este ejemplo todas las imágenes que subamos tendrán el tag **latest** , esto lo podemos cambiar si deseamos usando el $(Build.BuildId) como tag:
```bash
tags: |
$(Build.BuildId)
latest
```
Ejecutamos nuestro pipeline con los cambios al finalizar el pipeline vamos a nuestro repositorio dockerhub donde veremos la nueva imagen.
Acá te dejo el video de esta configuración por si tienes dudas:
{% youtube nmhLqZ3Kk_I %}
<iframe allowfullscreen="" youtube-src-id="nmhLqZ3Kk_I" width="480" height="270" src="https://www.youtube.com/embed/nmhLqZ3Kk_I"></iframe> | ahioros |
1,870,732 | การป้องกันการทำให้สัตว์เลี้ยงหายออกจากบ้าน: วิธีการง่ายๆ ที่คุณสามารถทำได้ | เรียนรู้วิธีการป้องกันสัตว์เลี้ยงของคุณจากการหลบหนีออกจากบ้าน ด้วยวิธีการง่ายๆ ที่สามารถทำได้ทันที | 0 | 2024-05-30T19:37:09 | https://pey-journey.co | pet, technology |
---
published: true
description: "เรียนรู้วิธีการป้องกันสัตว์เลี้ยงของคุณจากการหลบหนีออกจากบ้าน ด้วยวิธีการง่ายๆ ที่สามารถทำได้ทันที"
canonical_url: "https://pey-journey.co"
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gywl0dwy8xi5c5a3vf4g.jpeg
---
## การป้องกันการทำให้สัตว์เลี้ยงหายออกจากบ้าน: วิธีการง่ายๆ ที่คุณสามารถทำได้
สัตว์เลี้ยงเป็นส่วนหนึ่งของครอบครัวเรา และการสูญเสียสัตว์เลี้ยงสามารถสร้างความเศร้าโศกและความเครียดให้กับเจ้าของได้ ดังนั้นการป้องกันไม่ให้สัตว์เลี้ยงหายออกจากบ้านเป็นสิ่งที่สำคัญมาก ต่อไปนี้คือวิธีการที่สามารถช่วยป้องกันการสูญเสียสัตว์เลี้ยงได้
## 1. การติดตั้งรั้วและประตูที่มั่นคง
การติดตั้งรั้วและประตูที่มั่นคงเป็นวิธีที่ดีในการป้องกันไม่ให้สัตว์เลี้ยงหลบหนี รั้วควรมีความสูงเพียงพอและไม่มีช่องว่างที่สัตว์เลี้ยงสามารถหลบหนีได้ สำหรับประตูควรตรวจสอบให้แน่ใจว่าเป็นแบบที่สัตว์เลี้ยงไม่สามารถเปิดได้ด้วยตัวเอง
## 2. การติดแท็กหรือไมโครชิป
การติดแท็กหรือไมโครชิปที่มีข้อมูลของเจ้าของจะช่วยให้สัตว์เลี้ยงสามารถถูกระบุตัวได้ง่ายในกรณีที่หายไป การติดไมโครชิปเป็นวิธีที่มีประสิทธิภาพสูงเนื่องจากไมโครชิปไม่สามารถหลุดออกได้เหมือนกับแท็ก
## 3. การฝึกให้สัตว์เลี้ยงรู้จักคำสั่งพื้นฐาน
การฝึกให้สัตว์เลี้ยงรู้จักคำสั่งพื้นฐาน เช่น "หยุด" หรือ "มา" จะช่วยให้คุณสามารถควบคุมสัตว์เลี้ยงได้ดีขึ้นเมื่ออยู่ในสถานการณ์ที่อาจทำให้สัตว์เลี้ยงหลบหนี
## 4. การดูแลและให้ความสนใจ
สัตว์เลี้ยงที่ได้รับการดูแลและให้ความสนใจอย่างเพียงพอจะมีโอกาสน้อยที่จะพยายามหลบหนีเพื่อค้นหาความสนุกหรือความสนใจจากภายนอก ควรให้เวลาเล่นและออกกำลังกายกับสัตว์เลี้ยงทุกวัน
## 5. การติดตั้งประตูสัตว์เลี้ยงที่มีล็อค
หากคุณมีประตูสัตว์เลี้ยงในบ้าน ควรเลือกใช้ประตูที่มีล็อคเพื่อป้องกันไม่ให้สัตว์เลี้ยงสามารถออกไปข้างนอกได้โดยไม่ได้รับอนุญาต
## 6. การเฝ้าระวังอย่างใกล้ชิด
การเฝ้าระวังสัตว์เลี้ยงอย่างใกล้ชิดเมื่ออยู่ข้างนอกเป็นสิ่งสำคัญ ควรตรวจสอบให้แน่ใจว่าสัตว์เลี้ยงอยู่ในสายตาของคุณตลอดเวลา และหากจำเป็นควรใช้สายจูงเมื่อออกไปข้างนอก
การป้องกันสัตว์เลี้ยงหายออกจากบ้านต้องการการวางแผนและความใส่ใจในรายละเอียดต่าง ๆ แต่การป้องกันเหล่านี้จะช่วยให้คุณมั่นใจได้ว่าสัตว์เลี้ยงของคุณจะปลอดภัยและอยู่กับคุณไปตลอดเวลา
---
| poom-sci |
1,870,731 | 실시간 GitHub 대시보드 커밋 추적하기 | GitHub 커밋을 실시간으로 보여주는 대시보드를 만드는 방법을 알아보세요. 이 프로젝트에서는 JavaScript, C3.js, PubNub를 활용합니다. | 0 | 2024-05-30T19:36:32 | https://dev.to/pubnub-ko/silsigan-github-daesibodeu-keomis-cujeoghagi-39fc | 소프트웨어 개발 영역에서 실시간 C3.js 차트는 조직의 활동을 효과적으로 모니터링할 수 있는 방법을 제공합니다. 엔지니어링 팀의 경우 추적 가능한 메트릭 중 하나는 GitHub 커밋입니다. 이 블로그 게시물에서는 이 주제를 살펴보면서 GitHub의 API를 활용하여 실시간 대화형 그래프로 GitHub 커밋 데이터를 검색하고 표시하는 프로세스를 안내하는 튜토리얼을 제공합니다. HTML, Javascript, CSS의 기능을 활용하고 PubNub를 사용하여 GitHub 대시보드를 만들고 커밋 데이터를 스트리밍하는 한편, C3.js가 시각화에 도움을 줄 것입니다.
[실시간 C3.js 차트에](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 대해 자세히 알아보려면 [훌륭한 튜토리얼을](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 참조하세요. 이제 시작해 보겠습니다!
실시간 GitHub 대시보드 만드는 방법
----------------------
실시간 GitHub 대시보드를 만들려면 GitHub 리포지토리와 같은 다양한 데이터 소스에 연결하고 몇 가지 필요한 종속성을 처리해야 합니다. 보안 코딩 및 데이터 암호화와 같은 필요한 사이버 보안 조치에 유의하세요. 업계 표준 보안 프로토콜을 준수하는 것은 필수입니다.
다음은 단계별 가이드입니다:
### GitHub 웹후크 추가하기
웹훅을 설정하려면 다음 단계를 따르세요:
1. GitHub 리포지토리를 만들거나 기존 Git 리포지토리를 사용합니다.
2. 페이지 오른쪽의 '설정'을 클릭합니다.
3. 페이지 왼쪽의 '[웹훅](https://www.pubnub.com/learn/glossary/what-is-a-webhook/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko)'을 클릭합니다.
4. 오른쪽 상단의 '웹후크 추가'를 클릭합니다.
5. GitHub에서 비밀번호를 묻는 메시지가 표시되면 입력합니다.
6. '페이로드 URL'에 **http://pubnub-git-hook.herokuapp.com/github/ORG-NAME/TEAM-NAME** 을 입력합니다. ORG-NAME을 조직의 이름으로, TEAM-NAME을 리포지토리를 제어하는 팀으로 바꿉니다.
### 시각적 대시보드 로드
[이 페이지를 방문합니다](https://pubnub.github.io/git-commits-ui/). PubNub 대시보드를 통해 전송된 모든 커밋의 목록이 표시됩니다. 커밋 중 하나를 GitHub로 푸시하면 수십 밀리초 내에 GitHub 커밋 대시보드에 메시지가 표시되고 차트가 실시간으로 업데이트됩니다.
Github 커밋 대시보드 구축 방법
--------------------
이 대시보드는 GitHub, PubNub 데이터 스트림 네트워크, [C3.js로](https://c3js.org/) 구동되는 D3 차트 시각화의 매시업입니다. 커밋이 GitHub로 푸시되면, 커밋 메타데이터가 작은 Heroku 인스턴스에 게시되어 PubNub 네트워크에 게시됩니다. [우리는 GitHub 페이지의 대시보드 페이지에서 호스팅하고 있습니다.](https://pubnub.github.io/git-commits-ui/)
Heroku 인스턴스가 GitHub에서 커밋 데이터를 받으면 **pubnub-git** 채널의 공개 게시/구독 키를 사용하여 해당 데이터의 요약을 PubNub에 게시합니다. [여기에서 개발자 콘솔을 통해 pubnub-git 채널을 모니터링할 수 있습니다](https://www.pubnub.com/docs/console/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko).
다음은 메시지 페이로드 예시입니다:
```js
{
"name":"drnugent",
"avatar_url":"https://avatars.githubusercontent.com/u/857270?v=3",
"num_commits":4,
"team":"team-pubnub",
"org":"pubnub",
"time":1430436692806,
"repo_name":"drnugent/test"
}
```
대시보드가 **구독 콜백을** 통해 이 정보를 수신할 때 마법의 후반부가 시작됩니다. 대시보드의 소스를 보면 이 코드를 볼 수 있습니다:
```js
pubnub.subscribe({
channel: 'pubnub-git',
message: displayLiveMessage
});
```
이 구독 호출은 **pubnub-git** 채널에서 메시지가 수신될 때마다 JavaScript 함수 **displayLiveMessage()** 가 호출되도록 합니다. displayLiveMessage()는 로그의 맨 위에 커밋 푸시 알림을 추가하고 C3 시각화 차트를 업데이트합니다.
하지만 대시보드가 처음 로드될 때 어떻게 채워질까요?
대시보드에 PubNub 저장 및 재생 API 활용하기
-----------------------------
PubNub는 전송된 각 메시지의 기록을 보관하며, 개발자가 저장 [및 재생(기록) API를](https://www.pubnub.com/products/pubnub-platform/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 통해 저장된 메시지에 액세스할 수 있는 방법을 제공합니다. 웹 대시보드의 더 깊은 곳에 다음 코드가 표시됩니다:
```js
var displayMessages = function(ms) { ms[0].forEach(displayMessage); };
pubnub.history({
channel: 'pubnub-git',
callback: displayMessages,
count: 100
});
```
이것은 pubnub-git 채널을 통해 전송된 마지막 1,000개의 메시지를 검색하는 요청입니다. 따라서 해당 메시지가 전송되었을 때 웹 대시보드가 오프라인 상태였더라도 해당 메시지를 검색하고 해당 데이터를 사용하여 마치 영구적으로 온라인 상태인 것처럼 대시보드를 채울 수 있습니다.
이 기능은 셀룰러 네트워크의 모바일 앱이나 커넥티드 카처럼 연결이 간헐적이거나 불안정한 디바이스를 다룰 때 특히 유용합니다. PubNub 네트워크 덕분에 시각화 대시보드에는 애플리케이션의 상태를 저장하기 위한 백엔드가 필요하지 않습니다.
나만의 GitHub 대시보드 구축
------------------
Github 대시보드 구축을 시작하려면 github.com에서 Git Commit UI 리포지토리를 포크하고 설정 지침을 위한 README를 따르세요. 오픈 소스 커뮤니티 협업의 일환으로 풀 리퀘스트를 환영합니다.
실시간 대시보드의 향후 트렌드 및 발전 방향
------------------------
실시간 대시보드 및 관련 기술의 최신 동향과 발전을 주시하는 것은 매우 중요합니다. 여기에는 실시간 데이터 전송을 위한 웹 소켓, 즉각적인 인사이트를 얻기 위한 알림 사용, 다양한 워크플로우에서 실시간 대시보드 사용 등이 포함됩니다.
PubNub 체험하기
-----------
PubNub은 수많은 고객이 실시간 애플리케이션으로 성공을 거두는 데 도움을 주었습니다. 예를 들어, LinkedIn의 실시간 알림 시스템...
설정하기
----
PubNub 계정에 가입하면 PubNub 키에 무료로 즉시 액세스할 수 있습니다. PubNub 계정에서 사용할 수 있는 최신 기능은 다음과 같습니다...
시작하기
----
사용 사례나 [SDK에](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 관계없이 포괄적인 [PubNub 문서를](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 통해 즉시 시작하고 실행할 수 있습니다.
PubNub은 사용자 경험을 향상시킬 수 있는 사용자 친화적인 플랫폼을 제공합니다. 저희 서비스는 원활한 통합 프로세스를 위해 개발자를 염두에 두고 설계되었습니다.
여러분의 실시간 개발 여정을 더욱 원활하고 효율적으로 만들어드리겠습니다. 페이로드 URL을 설정하고 시작하세요!
블로그 게시물 전체에서 공식 문서와 공신력 있는 출처를 참조하여 정보의 유효성을 확인할 수 있습니다.
펍넙이 어떤 도움을 줄 수 있나요?
===================
이 문서는 원래 [PubNub.com에](https://www.pubnub.com/blog/tracking-realtime-github-dashboard-commits/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 게시되었습니다.
저희 플랫폼은 개발자가 웹 앱, 모바일 앱 및 IoT 디바이스를 위한 실시간 인터랙티브를 구축, 제공 및 관리할 수 있도록 지원합니다.
저희 플랫폼의 기반은 업계에서 가장 크고 확장성이 뛰어난 실시간 에지 메시징 네트워크입니다. 전 세계 15개 이상의 PoP가 월간 8억 명의 활성 사용자를 지원하고 99.999%의 안정성을 제공하므로 중단, 동시 접속자 수 제한 또는 트래픽 폭증으로 인한 지연 문제를 걱정할 필요가 없습니다.
PubNub 체험하기
-----------
[라이브 투어를](https://www.pubnub.com/tour/introduction/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 통해 5분 이내에 모든 PubNub 기반 앱의 필수 개념을 이해하세요.
설정하기
----
PubNub [계정에](https://admin.pubnub.com/signup/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 가입하여 PubNub 키에 무료로 즉시 액세스하세요.
시작하기
----
사용 사례나 [SDK에](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 관계없이 [PubNub 문서를](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ko) 통해 바로 시작하고 실행할 수 있습니다. | pubnubdevrel | |
1,870,730 | Conquer Your Cloud Bill: Mastering Azure Cost Optimization | The cloud empowers businesses with unparalleled scalability, agility, and on-demand resources. But... | 0 | 2024-05-30T19:35:29 | https://dev.to/unicloud/conquer-your-cloud-bill-mastering-azure-cost-optimization-4o7k | azure, webdev, aws | The cloud empowers businesses with unparalleled scalability, agility, and on-demand resources. But with this flexibility comes the responsibility of managing Azure cloud costs. Unchecked spending can quickly erode your budget and hinder growth. Here's where Azure cost optimization steps in – a strategic approach to minimizing your Azure expenses while maximizing the value you get from your cloud investment.
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Unlike traditional IT infrastructure with upfront costs, Azure offers a pay-as-you-go model. This flexibility can lead to uncontrolled spending if left unchecked. Here's why Azure cost optimization is crucial:
**- Reduced Costs:** Studies show organizations can achieve significant cost savings (up to 30%) by implementing optimization strategies. These savings can be re-invested in core business initiatives or fueling further cloud adoption.
**- Improved Budgeting & Forecasting: **Gaining deeper visibility into your Azure spending patterns allows for accurate budgeting and forecasting. This financial transparency empowers you to make informed decisions about resource allocation and avoid surprise cost spikes.
**- Enhanced Performance:** Optimizing your Azure resources ensures peak performance while keeping costs under control. This translates to faster processing times, improved application responsiveness, and a better overall user experience.
**Mastering the Art of Azure Cost Optimization**
Microsoft offers a robust set of tools and strategies to help you conquer your Azure cloud bill:
**- Leverage Azure Cost Management:** This built-in service provides a centralized view of your Azure spending across subscriptions, resource groups, and individual resources. Utilize cost analysis reports to identify trends, anomalies, and potential savings opportunities.
**- Embrace Reserved Instances (RIs):** Ideal for predictable workloads, RIs offer significant discounts compared to pay-as-you-go pricing. You commit to using a specific instance size for a one or three-year term in exchange for upfront savings.
**- Explore Azure Savings Plans:** Similar to RIs, Savings Plans offer significant discounts for consistent compute resource usage. They provide flexibility across different instance sizes within a chosen region.
**- Unleash the Power of VM Autoscaling:** Automate scaling your virtual machines (VMs) up or down based on real-time demand. This ensures you only pay for the resources you actually use, eliminating idle resource costs.
**- Identify and Shut Down Idle Resources:** Use Azure Advisor, a free service that recommends optimization opportunities. It can pinpoint unused VMs, databases, or other resources that can be stopped or scaled down to reduce costs.
**- Embrace Cost-Effective Storage Options:** Choose the right storage tier based on your data access needs. Consider cost-effective options like Azure Archive Blob storage for infrequently accessed data.
**- Promote a Culture of Cost Awareness:** Foster a culture within your organization where everyone understands the importance of responsible cloud usage. Educate users on cost optimization best practices.
**Taking Action: Your Azure Cost Optimization Journey**
**1. Assess Your Current Spending:** Utilize Azure Cost Management to understand your baseline cloud spending patterns. Identify areas with high costs or potential for optimization.
**2. Set SMART Goals:** Establish clear, measurable, achievable, relevant, and time-bound goals for your Azure cost optimization efforts. Aim for realistic cost reduction targets within a defined timeframe.
**3. Develop an Action Plan:** Create a roadmap outlining specific actions you'll take to achieve your cost optimization goals. Assign ownership for each action item and establish a timeline for implementation.
**4. Monitor and Refine:** Continuously monitor your progress and adjust your strategy as needed. Utilize Azure Cost Management to track your cost reduction efforts and identify new optimization opportunities.
By following these steps and leveraging the power of Azure's built-in tools, you can significantly reduce your Azure cloud costs and maximize the value you get from your cloud investment. Remember, Azure cost optimization is an ongoing process – constantly refine your approach and embrace a culture of cost awareness to ensure your cloud journey remains cost-effective and successful.
| unicloud |
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1,870,729 | Śledzenie zatwierdzeń na pulpicie nawigacyjnym GitHub w czasie rzeczywistym | Naucz się konstruować pulpit nawigacyjny pokazujący zatwierdzenia GitHub w czasie rzeczywistym. W tym projekcie wykorzystujemy JavaScript, C3.js i PubNub. | 0 | 2024-05-30T19:31:31 | https://dev.to/pubnub-pl/sledzenie-zatwierdzen-na-pulpicie-nawigacyjnym-github-w-czasie-rzeczywistym-5a7b | W dziedzinie tworzenia oprogramowania wykresy C3.js w czasie rzeczywistym oferują skuteczny sposób monitorowania aktywności w organizacji. W przypadku zespołów inżynieryjnych jednym z możliwych do śledzenia wskaźników są zatwierdzenia w serwisie GitHub. Aby zgłębić ten temat, ten wpis na blogu zawiera samouczek, który poprowadzi Cię przez proces wykorzystania interfejsu API GitHub do pobierania i wyświetlania danych zatwierdzeń GitHub na interaktywnym wykresie w czasie rzeczywistym. Wykorzystamy moc HTML, Javascript, CSS i użyjemy PubNub do stworzenia pulpitu nawigacyjnego GitHub i przesyłania strumieniowego danych zatwierdzeń, podczas gdy C3.js pomoże w wizualizacji.
Aby dowiedzieć się więcej o [wykresach C3.js w czasie rzeczywistym, przygotowaliśmy świetny samouczek](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl). A teraz do dzieła!
Jak utworzyć pulpit nawigacyjny GitHub w czasie rzeczywistym
------------------------------------------------------------
Tworzenie pulpitu nawigacyjnego GitHub w czasie rzeczywistym obejmuje łączenie się z różnymi źródłami danych, takimi jak repozytorium GitHub i dbanie o niektóre niezbędne zależności. Należy pamiętać o niezbędnych środkach bezpieczeństwa cybernetycznego, takich jak bezpieczne kodowanie i szyfrowanie danych. Przestrzeganie branżowych protokołów bezpieczeństwa jest koniecznością.
Oto przewodnik krok po kroku:
### Dodaj webhook GitHub
Aby skonfigurować webhook, wykonaj następujące kroki:
1. Utwórz repozytorium GitHub lub użyj istniejącego repozytorium git.
2. Kliknij "Ustawienia" po prawej stronie strony.
3. Kliknij "[Webhooks](https://www.pubnub.com/learn/glossary/what-is-a-webhook/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl)" po lewej stronie strony.
4. Kliknij "Dodaj Webhook" w prawym górnym rogu.
5. GitHub poprosi o podanie hasła, wprowadź je.
6. W polu "Payload URL" wpisz: **http://pubnub-git-hook.herokuapp.com/github/ORG-NAME/TEAM-NAME.** Zastąp ORG-NAME nazwą swojej organizacji, a TEAM-NAME nazwą zespołu kontrolującego repozytorium.
### Załaduj wizualny pulpit nawigacyjny
Odwiedź[tę stronę](https://pubnub.github.io/git-commits-ui/). Zobaczysz listę wszystkich commitów wysłanych przez dashboard PubNub - słodkie! Po przesłaniu jednego z commitów do GitHub, w ciągu kilkudziesięciu milisekund na pulpicie commitów GitHub powinna pojawić się wiadomość, a wykresy będą aktualizowane w czasie rzeczywistym.
Jak zbudowaliśmy pulpit nawigacyjny zatwierdzeń Github
------------------------------------------------------
Pulpit nawigacyjny jest połączeniem GitHub, PubNub Data Stream Network i wizualizacji wykresów D3 obsługiwanych przez [C3.js](https://c3js.org/). Gdy commit jest przesyłany do GitHub, metadane commitu są publikowane w małej instancji Heroku, która publikuje je w sieci PubNub. [Hostujemy stronę pulpitu nawigacyjnego na stronach GitHub.](https://pubnub.github.io/git-commits-ui/)
Gdy nasza instancja Heroku otrzyma dane zatwierdzenia z GitHub, publikuje podsumowanie tych danych w PubNub przy użyciu publicznych kluczy publikowania/subskrybowania na kanale **pubnub-git**. [Kanał pubnub-git można monitorować za pośrednictwem naszej konsoli programisty tutaj](https://www.pubnub.com/docs/console/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl).
Oto przykładowy ładunek wiadomości:
```js
{
"name":"drnugent",
"avatar_url":"https://avatars.githubusercontent.com/u/857270?v=3",
"num_commits":4,
"team":"team-pubnub",
"org":"pubnub",
"time":1430436692806,
"repo_name":"drnugent/test"
}
```
Druga połowa magii dzieje się, gdy dashboard otrzymuje te informacje za pośrednictwem **wywołania zwrotnego subskrypcji**. Jeśli spojrzysz na źródło dashboardu, zobaczysz ten kod:
```js
pubnub.subscribe({
channel: 'pubnub-git',
message: displayLiveMessage
});
```
To wywołanie subskrypcji zapewnia, że funkcja JavaScript **displayLiveMessage()** jest wywoływana za każdym razem, gdy wiadomość zostanie odebrana na kanale **pubnub-git**. displayLiveMessage() dodaje powiadomienie commit push na górze dziennika i aktualizuje wykresy wizualizacji C3.
Ale zaraz, w jaki sposób pulpit nawigacyjny jest wypełniany po pierwszym załadowaniu?
Wykorzystanie PubNub Storage & Playback API dla pulpitu nawigacyjnego
---------------------------------------------------------------------
PubNub przechowuje zapis każdej wysłanej wiadomości i zapewnia programistom sposób na dostęp do tych zapisanych wiadomości za pomocą interfejsu [API Storage & Playback (History)](https://www.pubnub.com/products/pubnub-platform/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl). Głębiej w pulpicie nawigacyjnym zobaczysz następujący kod:
```js
var displayMessages = function(ms) { ms[0].forEach(displayMessage); };
pubnub.history({
channel: 'pubnub-git',
callback: displayMessages,
count: 100
});
```
Jest to żądanie pobrania ostatnich 1000 wiadomości wysłanych za pośrednictwem kanału pubnub-git. Tak więc, nawet jeśli pulpit nawigacyjny mógł być offline, gdy te wiadomości zostały wysłane, jest w stanie je pobrać i wykorzystać te dane do wypełnienia pulpitu nawigacyjnego tak, jakby był stale online.
Funkcja ta jest szczególnie przydatna w przypadku urządzeń z przerywaną lub zawodną łącznością, takich jak aplikacje mobilne w sieciach komórkowych lub podłączone samochody. Dzięki sieci PubNub nasz pulpit wizualizacji nie wymaga zaplecza do przechowywania stanu aplikacji.
Tworzenie własnego pulpitu nawigacyjnego GitHub
-----------------------------------------------
Aby rozpocząć tworzenie własnego pulpitu nawigacyjnego Github, rozwidl repozytorium Git Commit UI na github.com i postępuj zgodnie z README, aby uzyskać instrukcje konfiguracji. Żądania ściągnięcia są mile widziane w ramach współpracy społeczności open source.
Przyszłe trendy i rozwój pulpitów nawigacyjnych w czasie rzeczywistym
---------------------------------------------------------------------
Śledzenie ostatnich trendów i rozwoju w zakresie pulpitów nawigacyjnych w czasie rzeczywistym i powiązanych technologii ma kluczowe znaczenie. Obejmuje to websockety do transmisji danych w czasie rzeczywistym, wykorzystanie powiadomień do natychmiastowego wglądu oraz wykorzystanie pulpitu nawigacyjnego w czasie rzeczywistym w różnych przepływach pracy.
Doświadczenie PubNub
--------------------
PubNub pomógł wielu klientom osiągnąć sukces dzięki ich aplikacjom działającym w czasie rzeczywistym. Na przykład system powiadomień w czasie rzeczywistym LinkedIn...
Konfiguracja
------------
Zarejestruj konto PubNub, aby uzyskać natychmiastowy dostęp do kluczy PubNub za darmo. Najnowsze funkcje dostępne na koncie PubNub obejmują ...
Rozpocznij
----------
Nasze obszerne [dokumenty](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl) PubNub pozwolą ci rozpocząć pracę w mgnieniu oka, niezależnie od przypadku użycia lub [zestawu SDK](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl).
PubNub oferuje przyjazną dla użytkownika platformę, która zwiększa komfort użytkowania. Nasze usługi zostały zaprojektowane z myślą o programistach, aby zapewnić płynny proces integracji.
Jesteśmy tu po to, by ułatwić i usprawnić proces tworzenia aplikacji w czasie rzeczywistym. Skonfiguruj adres URL ładunku i zaczynajmy!
Oficjalna dokumentacja i wiarygodne źródła mogą być przywoływane w całym wpisie na blogu w celu potwierdzenia ważności informacji.
Jak PubNub może ci pomóc?
=========================
Ten artykuł został pierwotnie opublikowany na [PubNub.com](https://www.pubnub.com/blog/tracking-realtime-github-dashboard-commits/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl)
Nasza platforma pomaga programistom tworzyć, dostarczać i zarządzać interaktywnością w czasie rzeczywistym dla aplikacji internetowych, aplikacji mobilnych i urządzeń IoT.
Podstawą naszej platformy jest największa w branży i najbardziej skalowalna sieć komunikacyjna w czasie rzeczywistym. Dzięki ponad 15 punktom obecności na całym świecie obsługującym 800 milionów aktywnych użytkowników miesięcznie i niezawodności na poziomie 99,999%, nigdy nie będziesz musiał martwić się o przestoje, limity współbieżności lub jakiekolwiek opóźnienia spowodowane skokami ruchu.
Poznaj PubNub
-------------
Sprawdź [Live Tour](https://www.pubnub.com/tour/introduction/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl), aby zrozumieć podstawowe koncepcje każdej aplikacji opartej na PubNub w mniej niż 5 minut.
Rozpocznij konfigurację
-----------------------
Załóż [konto](https://admin.pubnub.com/signup/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl) PubNub, aby uzyskać natychmiastowy i bezpłatny dostęp do kluczy PubNub.
Rozpocznij
----------
[Dokumenty](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl) PubNub pozwolą Ci rozpocząć pracę, niezależnie od przypadku użycia lub [zestawu SDK](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=pl). | pubnubdevrel | |
1,870,726 | GitHub ダッシュボードのコミットをリアルタイムで追跡する | GitHubのコミットをリアルタイムで表示するダッシュボードの作り方を学ぶ。このプロジェクトではJavaScript、C3.js、PubNubを利用します。 | 0 | 2024-05-30T19:24:39 | https://dev.to/pubnub-jp/github-datusiyubodonokomitutoworiarutaimudezhui-ji-suru-364f | ソフトウェア開発の領域では、リアルタイムのC3.jsチャートが組織内の活動を監視する効果的な方法を提供します。エンジニアリング・チームにとって、追跡可能なメトリクスの一つは GitHub のコミットです。このブログでは、GitHub の API を利用して GitHub のコミット・データを取得し、リアルタイムでインタラクティブなグラフに表示する方法を説明します。HTML、Javascript、CSSのパワーを活用し、PubNubを使ってGitHubダッシュボードを作成し、コミットデータをストリーミングします。
[リアルタイムの C3.js チャートについては、素晴らしいチュートリアルが](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)あります。では、さっそく見ていこう！
リアルタイム GitHub ダッシュボードの作り方
-------------------------
リアルタイム GitHub ダッシュボードを作るには、GitHub リポジトリのような様々なデータソースに接続し、必要な依存関係を処理する必要があります。セキュアなコーディングやデータの暗号化など、必要なサイバーセキュリティ対策を意識しましょう。業界標準のセキュリティ・プロトコルに従うことは必須です。
ステップバイステップのガイドはこちら：
### GitHub ウェブフックを追加する
ウェブフックをセットアップするには、以下の手順に従ってください：
1. GitHub リポジトリを作成するか、既存の git リポジトリを使用する。
2. ページの右側にある 'Settings' をクリックします。
3. ページの左側にある '[Webhooks](https://www.pubnub.com/learn/glossary/what-is-a-webhook/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)' をクリックします。
4. 右上の 'Add Webhook' をクリックします。
5. GitHub がパスワードを要求しますので、入力してください。
6. Payload URL'の下に:**http://pubnub-git-hook.herokuapp.com/github/ORG-NAME/TEAM-NAME** と入力します。ORG-NAME は組織名に、TEAM-NAME はレポを管理しているチームに置き換えてください。
### ビジュアル・ダッシュボードを読み込む
[このページにアクセスして](https://pubnub.github.io/git-commits-ui/)ください。PubNubダッシュボード経由で送信されたすべてのコミットのリストが表示されます！GitHub にコミットをプッシュすると、数十ミリ秒以内に GitHub のコミットダッシュボードにメッセージが表示され、グラフがリアルタイムで更新されます。
Github コミットダッシュボードの作り方
----------------------
このダッシュボードは、GitHub、PubNub Data Stream Network、[C3.jsによる](https://c3js.org/)D3チャートビジュアライゼーションをマッシュアップしたものです。コミットがGitHubにプッシュされると、コミットのメタデータは小さなHerokuインスタンスに投稿され、PubNubネットワークに公開されます。[私たちはGitHubのページでダッシュボードのページをホストしています。](https://pubnub.github.io/git-commits-ui/)
HerokuインスタンスはGitHubからコミットデータを受け取ると、**pubnub-gitという**チャンネルでpublicなpublish/subscribeキーを使ってPubNubにそのデータの概要をpublishします。[pubnub-git チャネルは、開発者コンソールで監視することが](https://www.pubnub.com/docs/console/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)できます。
これがメッセージのペイロードの例です：
```js
{
"name":"drnugent",
"avatar_url":"https://avatars.githubusercontent.com/u/857270?v=3",
"num_commits":4,
"team":"team-pubnub",
"org":"pubnub",
"time":1430436692806,
"repo_name":"drnugent/test"
}
```
マジックの後半は、ダッシュボードが**subscribe コールバックを通して**この情報を受け取るときに起こります。ダッシュボードのソースを見ると、このようなコードがあります：
```js
pubnub.subscribe({
channel: 'pubnub-git',
message: displayLiveMessage
});
```
この subscribe 呼び出しによって、**pubnub-git**チャネルでメッセージを受信するたびに JavaScript の関数**displayLiveMessage()**が呼び出されるようになります。displayLiveMessage() はコミットのプッシュ通知をログの先頭に追加し、C3 の可視化チャートを更新します。
しかし、ダッシュボードが最初にロードされたとき、どのように入力されるのでしょうか？
PubNub Storage & Playback APIをダッシュボードに活用する
------------------------------------------
PubNubは送信された各メッセージの記録を保持し、[Storage & Playback（History）APIを](https://www.pubnub.com/products/pubnub-platform/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)使用してそれらの保存されたメッセージにアクセスする方法を開発者に提供します。ウェブダッシュボードの奥深くに、次のようなコードがあります：
```js
var displayMessages = function(ms) { ms[0].forEach(displayMessage); };
pubnub.history({
channel: 'pubnub-git',
callback: displayMessages,
count: 100
});
```
これは、pubnub-git チャンネルで送信された直近の 1,000 通のメッセージを取得するためのリクエストです。つまり、これらのメッセージが送信されたときにウェブダッシュボードがオフラインだったとしても、それを取得し、そのデータを使ってあたかもダッシュボードが常時オンラインであったかのように表示することができるのです。
この機能は、携帯電話ネットワーク上のモバイル・アプリやコネクテッド・カーなど、接続が断続的で不安定なデバイスを扱う場合に特に有効だ。PubNubネットワークのおかげで、私たちの可視化ダッシュボードはアプリケーションの状態を保存するバックエンドを必要としません。
独自のGitHubダッシュボードを構築する
---------------------
Githubダッシュボードのビルドを開始するには、github.comのGit Commit UIリポジトリをフォークし、READMEに従ってセットアップ手順を確認してください。オープンソースコミュニティのコラボレーションの一環として、プルリクエストを歓迎します。
リアルタイムダッシュボードの今後の動向と発展
----------------------
リアルタイム・ダッシュボードと関連技術の最後のトレンドと開発に目を向け続けることは非常に重要である。リアルタイムデータ伝送のためのウェブソケット、即時の洞察のための通知の使用、様々なワークフローでのリアルタイムダッシュボードの使用などが含まれます。
PubNubの体験
---------
PubNubは多くのクライアントがリアルタイムアプリケーションで成功を収めるのを支援してきました。例えば、LinkedInのリアルタイム通知システム...
セットアップ
------
PubNubアカウントにサインアップすると、PubNubキーに無料ですぐにアクセスできます。PubNubアカウントで利用可能な最新機能には...
始める
---
私たちの包括的な[PubNubドキュメントは](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)、ユースケースや[SDKに](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)関係なく、すぐに立ち上げて実行することができます。
PubNubは、ユーザーエクスペリエンスを向上させるユーザーフレンドリーなプラットフォームを提供します。私たちのサービスは、シームレスな統合プロセスのために開発者を念頭に置いて設計されています。
私たちはあなたのリアルタイム開発の旅をよりスムーズで効率的にするためにここにいることを忘れないでください。ペイロードのURLを設定して、始めましょう！
公式ドキュメントや権威ある情報源は、情報の妥当性を確認するためにブログ記事全体で参照することができます。
PubNubはどのようにお役に立ちますか？
=====================
この記事は[PubNub.comに](https://www.pubnub.com/blog/tracking-realtime-github-dashboard-commits/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)掲載されたものです。
私たちのプラットフォームは、開発者がWebアプリ、モバイルアプリ、およびIoTデバイスのためのリアルタイムのインタラクティブ性を構築、配信、管理するのに役立ちます。
私たちのプラットフォームの基盤は、業界最大かつ最もスケーラブルなリアルタイムエッジメッセージングネットワークです。世界15か所以上で8億人の月間アクティブユーザーをサポートし、99.999%の信頼性を誇るため、停電や同時実行数の制限、トラフィックの急増による遅延の問題を心配する必要はありません。
PubNubを体験
---------
[ライブツアーを](https://www.pubnub.com/tour/introduction/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)チェックして、5分以内にすべてのPubNub搭載アプリの背後にある本質的な概念を理解する
セットアップ
------
[PubNubアカウントに](https://admin.pubnub.com/signup/?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)サインアップすると、PubNubキーに無料ですぐにアクセスできます。
始める
---
[PubNubのドキュメントは](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)、ユースケースや[SDKに](https://www.pubnub.com/docs?utm_source=devto&utm_medium=syndication&utm_campaign=off_domain&utm_content=ja)関係なく、あなたを立ち上げ、実行することができます。 | pubnubdevrel | |
1,870,725 | Tracking Real-time GitHub Dashboard Commits | In the realm of software development, real-time C3.js charts offer an effective way to monitor... | 0 | 2024-05-30T19:24:38 | https://dev.to/pubnub/tracking-real-time-github-dashboard-commits-42ia | In the realm of software development, real-time C3.js charts offer an effective way to monitor activity in your organization. For engineering teams, one of the trackable metrics is GitHub commits. Exploring this topic, this blog post provides a tutorial to guide you through the process of utilizing GitHub's API to retrieve and display GitHub commit data in a real-time, interactive graph. We'll leverage the power of HTML, Javascript, CSS, and use PubNub to create the GitHub dashboard and stream the commit data, while C3.js will help with the visualization.
To learn more about [real-time C3.js charts, we have a great tutorial](https://pubnub.com/blog/building-realtime-live-updating-animated-graphs-c3-js/?). Now, let's dive in!
How to create a real-time GitHub dashboard
------------------------------------------
Creating a real-time GitHub dashboard involves connecting to various data sources such as GitHub repository and taking care of some necessary dependencies. Be aware of the necessary cybersecurity measures like secure coding and data encryption. Following industry-standard security protocols is imperative.
Here's a step-by-step guide:
### Add a GitHub Webhook
To set up the webhook, follow these steps:
1. Create a GitHub repository or use an existing git repository.
2. Click ‘Settings’ on the right side of the page
3. Click ‘[Webhooks](https://www.pubnub.com/learn/glossary/what-is-a-webhook/?)’ on the left side of the page
4. Click ‘Add Webhook’ in the upper right
5. GitHub will prompt for your password, enter it
6. Under ‘Payload URL’ enter: **http://pubnub-git-hook.herokuapp.com/github/ORG-NAME/TEAM-NAME**. Replace ORG-NAME with the name of your organization and TEAM-NAME with the team controlling the repo.
### Load the Visual Dashboard
[Visit this page](https://pubnub.github.io/git-commits-ui/). You’ll see a list of all the commits sent through the PubNub dashboard — sweet! When you push one of your commits to GitHub, you should see a message appear on your GitHub commit dashboard within a few dozens of milliseconds, and the charts will update in real time.
How we built the Github commit dashboard
----------------------------------------
The dashboard is a mashup of GitHub, the PubNub Data Stream Network, and D3 chart visualizations powered by [C3.js](https://c3js.org/). When a commit is pushed to GitHub, the commit metadata is posted to a small Heroku instance which publishes it to the PubNub network. [We’re hosting on dashboard page on GitHub pages.](https://pubnub.github.io/git-commits-ui/)
Once our Heroku instance receives the commit data from GitHub, it publishes a summary of that data to PubNub using the public publish/subscribe keys on the channel **pubnub-git**. [You can monitor the pubnub-git channel through our developer console here](https://www.pubnub.com/docs/console/?).
Here’s an example message payload:
```js
{
"name":"drnugent",
"avatar_url":"https://avatars.githubusercontent.com/u/857270?v=3",
"num_commits":4,
"team":"team-pubnub",
"org":"pubnub",
"time":1430436692806,
"repo_name":"drnugent/test"
}
```
The second half of the magic happens when the dashboard receives this information through its **subscribe callback**. If you look at the source of the dashboard, you’ll see this code:
```js
pubnub.subscribe({
channel: 'pubnub-git',
message: displayLiveMessage
});
```
This subscribe call ensures that the JavaScript function **displayLiveMessage()** gets called every time a message is received on the **pubnub-git** channel. displayLiveMessage() adds the commit push notification to the top of the log and updates the C3 visualization charts.
But wait, how is the dashboard populated when it first loads?
Leveraging the PubNub Storage & Playback API for your dashboard
---------------------------------------------------------------
PubNub keeps a record of each message sent, and provides developers a way to access those saved messages with the [Storage & Playback (History) API](https://www.pubnub.com/products/pubnub-platform/?). Deeper in the web dashboard, you’ll see the following code:
```js
var displayMessages = function(ms) { ms[0].forEach(displayMessage); };
pubnub.history({
channel: 'pubnub-git',
callback: displayMessages,
count: 100
});
```
This is a request to retrieve the last 1,000 messages sent over the pubnub-git channel. So, even though the web dashboard may have been offline when those messages were sent, it is able to retrieve them and use that data to populate the dashboard as though it was permanently online.
This feature is especially useful when dealing with devices with intermittent or unreliable connectivity, such as mobile apps on cellular networks or connected cars. Thanks to the PubNub network, our visualization dashboard doesn’t require a backend to store the state of the application.
Building Your Own GitHub Dashboard
----------------------------------
To start building your Github dashboard, fork the Git Commit UI repository on github.com and follow the README for setup instructions. Pull requests are welcomed as part of the open source community collaboration.
Future trends and developments in real-time dashboards
------------------------------------------------------
Keeping an eye on the last trends and developments in real-time dashboards and related technologies is crucial. That includes websockets for real-time data transmission, use of notifications for immediate insights, and use of real-time dashboard in various workflows.
How can PubNub help you?
========================
This article was originally published on [PubNub.com](https://www.pubnub.com/blog/tracking-realtime-github-dashboard-commits/?)
Our platform helps developers build, deliver, and manage real-time interactivity for web apps, mobile apps, and IoT devices.
The foundation of our platform is the industry's largest and most scalable real-time edge messaging network. With over 15 points-of-presence worldwide supporting 800 million monthly active users, and 99.999% reliability, you'll never have to worry about outages, concurrency limits, or any latency issues caused by traffic spikes.
Experience PubNub
-----------------
Check out [Live Tour](https://www.pubnub.com/tour/introduction/?) to understand the essential concepts behind every PubNub-powered app in less than 5 minutes
Get Setup
---------
Sign up for a [PubNub account](https://admin.pubnub.com/signup/?) for immediate access to PubNub keys for free
Get Started
-----------
The [PubNub docs](https://www.pubnub.com/docs?) will get you up and running, regardless of your use case or [SDK](https://www.pubnub.com/docs?) | pubnubdevrel | |
1,870,700 | Function tricks | Motivation Some JS features are hidden under the hood or veiled under some expressions,... | 0 | 2024-05-30T19:12:41 | https://dev.to/lgtome/function-tricks-11aa | javascript, typescript, webdev, programming | ## Motivation
Some JS features are hidden under the hood or veiled under some expressions, etc.
This article is about to enlighten some features or approaches that are not on the surface.
## Prerequisites
JS knowledge and that's all.
## Case #1
We have a simple code:
```js
function test(a,b){
return {
sum: a + b,
multiplied: a * b
}
}
```
This function just returns an object with _sum_ and _multiplied_ values.
We can invoke the function like:
```js
test(1,2) // -> {sum: 3, multiplied: 2}
```
But also we can modify our function to:
```js
function test(a,b){
this.sum = a + b
this.multiplied = a * b
}
```
In this case, we have no return statement, but in the return of invocation like this:
```js
new test(1,2)
```
we will have the same structure, smth like this:
```js
test {
sum: 3,
multiplied: 2,
__proto__: { constructor: ƒ test() }
}
```
## Case #2
The typical way to invoke the function:
```js
//....
testFunction(a,b,c)
```
but we have another method to invoke if we have no args(e.g):
```js
function test(){
return { message: "Hi there!" }
}
const data = new test
console.log(data.message) // -> "Hi there!"
```
<img width="100%" style="width:100%" src="https://i.giphy.com/media/v1.Y2lkPTc5MGI3NjExc3Jmamw5eml2czduOGticmN1d3ZlbWU2M2NvMmJqa21tMDgzbTQ4ayZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/9UmAh3S9S6krqCkZ9p/giphy.gif">
## Case #3
The regular way that we can use it provides the object on the return statement inside the function, but we can use it outside if we need it.
Regular:
```js
function test(){
return { message: "Hi there!" }
}
console.log(test()) // -> "Hi there!"
```
Weird, but possible:
```js
function test(){
return { message: "Hi there!" }
}
test.useTest = function(){
return this()
}
console.log(test.useTest()) // -> "Hi there!"
```
for example in `React` we can use this approach for compositing our components.
## Conclusion
JS is tricky and not as simple as it looks.
<img width="100%" style="width:100%" src="https://i.giphy.com/media/v1.Y2lkPTc5MGI3NjExbjNtZ3NpeDBjaDV4MnFrdWxrbHQ5ZmtrdzNjN3Bob2JqNWJhbzMyNiZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/5qlnl8qqLVekKaZaKC/giphy.gif"> | lgtome |
1,870,699 | Elevate Your Home Decor with Large Mirrors | Are you ready to take your home decor to the next level? Look no further! Our large mirrors for sale... | 0 | 2024-05-30T19:08:36 | https://dev.to/farheen_fari_28fece8d56c3/elevate-your-home-decor-with-large-mirrors-12pg | Are you ready to take your home decor to the next level? Look no further! Our **[large mirrors for sale](https://www.elegantcollections.com.au/products/french-provincial-ornate-mirrors-range-5-sizes-available)** are the perfect addition to any room, offering a touch of sophistication and elegance.
## The Power of Reflection: How Large Mirrors Can Transform Your Space
Make small rooms appear larger
Add depth and dimension to any space
Reflect natural light and brighten up the room
Create the illusion of a larger window
## A World of Possibilities: Our Collection of Large Mirrors
Modern and minimalist designs to suit any style
Ornate and decorative options for a touch of luxury
Oversized and statement-making mirrors to make a bold impact
Affordable and budget-friendly options without compromising on quality
## More Than Just a Mirror: The Benefits of Large Mirrors
Create a sense of openness and airiness
Add a touch of glamour and sophistication
Make a perfect focal point in any room
Enhance the beauty of your home decor
## Tips and Tricks: How to Style Your Large Mirror
Hang it above a sofa or fireplace for a dramatic effect
Use it as a room divider for a unique look
Pair it with a statement piece of furniture for a chic look
Experiment with different angles and placements for a unique perspective
**Final Thought:**
Large mirrors are more than just a decorative piece – they're a game-changer for any room! With our collection of large mirrors for sale, you can elevate your home decor without breaking the bank.
**FAQs:**
What is a large mirror?
A mirror with a larger-than-average size, perfect for making a statement.
How big are large mirrors?
Our collection ranges from 40 inches to 80 inches or more!
Can I hang a large mirror myself?
Yes, but make sure to use a sturdy hook and follow safety guidelines.
How do I clean my large mirror?
Use a soft cloth and mild cleaning products to avoid streaks and scratches.
Are large mirrors expensive?
Prices vary, but we offer affordable options without compromising on quality!
You
write Ai-free and eye catchy content on mirrored hall table
Meta AI
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H2: A Touch of Glamour: How Mirrored Hall Tables Can Elevate Your Space
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Ornate and decorative options for a touch of luxury
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H2: More Than Just a Table: The Benefits of Mirrored Hall Tables
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H3: Tips and Tricks: How to Style Your Mirrored Hall Table
Pair it with a statement piece of art or decor
Add a vase or flowers for a pop of color
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Use it as a console table or desk for a unique look
Final Thought: Mirrored hall tables are more than just a piece of furniture – they're a statement piece that sets the tone for your entire home. With our collection, you can elevate your entryway and make a lasting impression.
FAQs:
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A hall table with a mirrored surface, perfect for adding a touch of glamour.
How big are mirrored hall tables?
Our collection ranges from 30 inches to 60 inches or more!
Can I use a mirrored hall table as a console table?
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How do I clean my mirrored hall table?
Use a soft cloth and mild cleaning products to avoid streaks and scratches.
Are mirrored hall tables expensive?
Prices vary, but we offer affordable options without compromising on quality! | farheen_fari_28fece8d56c3 | |
1,870,698 | how do i open a html file with a button? | so I made a html game, and I want my telegram bot to open the file in a window by pressing the button... | 0 | 2024-05-30T19:07:32 | https://dev.to/anton_y_33d3442771c6be6c4/how-do-i-open-a-html-file-with-a-button-5g1a | telegram | so I made a html game, and I want my telegram bot to open the file in a window by pressing the button in a bot, somebody knows how to do it?
*sorry for bad English | anton_y_33d3442771c6be6c4 |
1,870,697 | Elevate Your Cleaning Routine with Expert Tips from Bokma.de | Maintaining a spotless home can often feel like a never-ending challenge. Between work, family, and... | 0 | 2024-05-30T19:06:12 | https://dev.to/ata_urrehman_c8882588361/elevate-your-cleaning-routine-with-expert-tips-from-bokmade-46f5 | cleaning, hometips, spotlesshome, professionalhomecleaning | Maintaining a spotless home can often feel like a never-ending challenge. Between work, family, and other commitments, it’s easy for cleaning tasks to pile up. Fortunately, www.bokma.de is here to help with expert cleaning tips that can transform your routine and keep your home sparkling clean.
Why Choose www.bokma.de?
At www.bokma.de, we understand that a clean home is not just about aesthetics – it’s about creating a healthy, stress-free environment for you and your family. Our team of experts is dedicated to providing practical, effective cleaning solutions tailored to your needs.
Top Cleaning Tips from www.bokma.de
Create a Cleaning Schedule: Consistency is key. Break down your cleaning tasks into daily, weekly, and monthly activities to make the process more manageable. For instance, tackle kitchen surfaces and floors daily, while saving deep cleaning tasks like window washing for monthly sessions.
Use the Right Tools and Products: Investing in high-quality cleaning tools and products can make a significant difference. At www.bokma.de, we recommend eco-friendly, non-toxic cleaners that are safe for your family and the environment. Microfiber cloths, a good vacuum cleaner, and specialized brushes can also make your cleaning tasks more efficient.
Declutter Regularly: Clutter can make even the cleanest homes look messy. Regularly go through your belongings and decide what to keep, donate, or discard. A decluttered space not only looks better but also reduces the number of surfaces that need to be cleaned.
Focus on High-Touch Areas: Pay special attention to areas that are frequently touched, such as door handles, light switches, and remote controls. These spots can harbor germs and bacteria, so cleaning them regularly is crucial for maintaining a healthy home.
Don’t Forget the Details: Small details like cleaning baseboards, dusting ceiling fans, and wiping down appliances can make a big difference. These tasks are often overlooked but contribute to the overall cleanliness and feel of your home.
Join the www.bokma.de Community
At www.bokma.de, we believe in sharing knowledge and helping each other achieve a cleaner, more organized living space. Join our community for more tips, product recommendations, and cleaning hacks that can make your life easier.
Visit Us Today
Ready to elevate your cleaning routine? Visit www.bokma.de today for more expert tips and resources. Whether you’re looking for advice on tackling tough stains, organizing your space, or selecting the best cleaning products, www.bokma.de has you covered. | ata_urrehman_c8882588361 |
1,870,696 | 7 Concepts Every Web Developer Should Know! | Whether you’re a seasoned developer or a curious beginner just starting, creating outstanding... | 0 | 2024-05-30T19:05:11 | https://dev.to/safdarali/7-concepts-every-web-developer-should-know-19k1 | Whether you’re a seasoned developer or a curious beginner just starting, creating outstanding websites needs more than just stunning animations and interesting effects.
It all comes down to a solid basis in important concepts.
Mastering these bad boys will make you a more effective and flexible developer, ready to take on every task.
So grab your favorite coding cup (coffee for all-nighters, anyone?), and let’s get started!
Have a BIG IDEA in mind? Let’s discuss what we can gain together.
Write at Gmail | LinkedIn
## 01. The Big Three: HTML, CSS & JavaScript
Take these three to be the web’s basic building blocks.
HTML organizes your content, CSS beautifully styles it, and JavaScript adds interaction and personality.
Here is a basic breakdown:
- **HTML** (Hypertext Markup Language) is the basis for your website, specifying elements such as headers, paragraphs, and illustrations.
- **CSS** (Cascading Style Sheets): CSS makes your website visually attractive. CSS pseudo-classes can offer dynamic effects when a button is hovered over or focused, such as changing its color or adding stunning animations.
Actionable Tip: Use the BEM (Block-Element-Modifier) structure to write clean, maintainable CSS.
[BEM 101 | CSS-Tricks](https://css-tricks.com/bem-101/?source=post_page-----b32407fda8dc--------------------------------)
The following is a collaborative post by guest Joe Richardson, Robin Rendle, and the CSS-Tricks staff. Joe…
css-tricks.com
- **JavaScript**: This is the magic that allows webpages to interact with one another. Learn how to write clean, maintainable JavaScript to avoid code challenges in the future.
## 02. Responsive Web Design
Imagine how your website looks on a large desktop display but not on a mobile device.
Not cool.
Responsive design guarantees that your website works effortlessly on any device, especially PCs, tablets, and smartphones.
**Here is the secret sauce:**
- **Media Queries** are like magic spells that tell your website to customize its layout depending on screen size.
[A Complete Guide to CSS Media Queries | CSS-Tricks
CSS Media queries are a way to target browsers by certain characteristics, features, and user preferences, then apply…
css-tricks.com](https://css-tricks.com/a-complete-guide-to-css-media-queries/?source=post_page-----b32407fda8dc--------------------------------)
- **Fluid Grids**: Imagine a website layout as a grid. Fluid grids use percentages rather than set pixels, allowing the grid to “flow” and adjust to different displays.
[What Is Fluid Design and How Is It Used on Websites?
Discover the power of fluid design in web development. Learn what it is, how it works, and its benefits in creating…
blog.hubspot.com
](https://blog.hubspot.com/website/fluid-design?source=post_page-----b32407fda8dc--------------------------------)
[How Fluid Grids Work in Responsive Web Design
Responsive design is the process of arranging the layout in a way that all the important information is presented in a…
www.dmxzone.com](https://www.dmxzone.com/go/21230/how-fluid-grids-work-in-responsive-web-design/?source=post_page-----b32407fda8dc--------------------------------)
- **Flexible images**: Large photos might slow down your mobile page. Use flexible images that resize to fit the screen size.
[Responsive Web Design: The Flexible Images
The flexible images are responsive web design's second pillar. They allow us to provide image solutions with no…
www.ingeniumweb.com](https://www.ingeniumweb.com/blog/post/responsive-web-design-the-flexible-images/1032/?source=post_page-----b32407fda8dc--------------------------------)
## 03. Version Control with Git
What is Git? A Beginner's Guide to Git Version Control
[Git is a version control system that developers use all over the world. It helps you track different versions of your…
www.freecodecamp.org](https://www.freecodecamp.org/news/what-is-git-learn-git-version-control/?source=post_page-----b32407fda8dc--------------------------------)
Ever worked on a project, made changes, and then accidentally messed things up? Git version control is a savior.
It tracks changes to your code, allowing you to restore to previous versions and interact with others smoothly.
**Here’s a crash course on Git basics.**
- **Repositories**: Think of a repository as the hub for all of your code versions.
- **Commits**: These are snapshots of your code at specified moments in time. You can include messages that explain the changes that you made.
[About commits - GitHub Docs
You can save small groups of meaningful changes as commits.
docs.github.com
](https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/about-commits?source=post_page-----b32407fda8dc--------------------------------)
- **Branches**: Assume you want to test out a new feature without impacting the main code. Branches let you work on changes separately before merging them back into the main codebase once you’re satisfied.
[A look under the hood: how branches work in Git
Git branches allow you to keep different versions of your code cleanly separated. Here's a look at how they work and…
stackoverflow.blog](https://stackoverflow.blog/2021/04/05/a-look-under-the-hood-how-branches-work-in-git/?source=post_page-----b32407fda8dc--------------------------------)
## 04. HTTP/HTTPS & APIs
The web is all about communication! HTTP (Hypertext Transfer Protocol) is the language that computers use to communicate with one another.
When you visit a website, your browser sends an HTTP request, and the server returns an HTTP response giving the website content.
- **HTTPS (Hypertext Transfer Protocol Secure)** is the secure version of HTTP, which encrypts data transport to safeguard your website and user information. Always use HTTPS to ensure security!
- **APIs (Application Programming Interfaces)** are similar to waiters at a restaurant. They accept your request (such as collecting user data) and deliver the information you want from another system. Understanding APIs is essential for creating interactive web apps.
## 05. Basic SEO:
Do you want your website to be the first thing visitors see when searching for something? Basic Search Engine Optimization (SEO) can help!
- Meta Tags: These are hidden messages for search engines that include information about your website’s content.
[HTML Meta Tags- Everything a front-end developer should know
The post-HTML Meta Tags- Everything a front-end developer should know appeared first on Rajesh Dhiman... Tagged with…
dev. to](https://dev.to/paharihacker/html-meta-tags-everything-a-front-end-developer-should-know-37dg?source=post_page-----b32407fda8dc--------------------------------)
- **Keywords**: These are the terms that people are likely to look for. Use relevant keywords strategically throughout your website’s content.
- **Website Performance Optimization**: A slow website is a sad one. Optimize your website’s image size and code structure for faster loading, which benefits both search engines and visitors.
## 06. Web Accessibility
The web should be accessible to everyone! Web accessibility means that persons with disabilities can get to and use your website.
- **Semantic HTML** means using HTML elements to explain the meaning and purpose of your content, instead of merely displaying it.
[Semantic HTML5 Elements Explained
Semantic HTML elements are those that clearly describe their meaning in a human- and machine-readable way. Elements…
www.freecodecamp.org](https://www.freecodecamp.org/news/semantic-html5-elements/?source=post_page-----b32407fda8dc--------------------------------)
- **ARIA Roles** are unique properties that give additional information to screen readers used by visually impaired people.
[Background: An in-depth guide to ARIA roles - The A11Y Project
ARIA roles are one-half of the predefined categories of attributes used to describe elements that may not exist…
www.a11yproject.com](https://www.a11yproject.com/posts/an-indepth-guide-to-aria-roles/?source=post_page-----b32407fda8dc--------------------------------)
- **Keyboard Navigation**: A mouse is not used by everyone. Ensure that your website can be accessed just by keyboard.
## 07. Performance Optimization
No one loves a slow website! Optimize your website’s speed by reducing HTTP requests (the number of times it asks the server for something), adding caching (storing frequently used items locally), and optimizing images for more quickly loading.
Remember that a quick website means a happy user (and a happy search engine!).
## Pro Tips & Best Practices: From a Developer to You
Here are some gold pieces I’ve picked up along my journey.
Always comment on your code! Your future self (or someone else) will thank you.
[Best practices for writing code comments
While there are many resources to help programmers write better code-such as books and static analyzers-there are few…
StackOverflow.blog](https://stackoverflow.blog/2021/12/23/best-practices-for-writing-code-comments/?source=post_page-----b32407fda8dc--------------------------------)
Do not let yourself be afraid to experiment! Break things, try new things, and learn from the mistakes you make.
The dev community is ready to help! There are many communities and resources out online. Don’t be hesitant to ask questions.
## Final Words
By learning these basic concepts, you will not only boost your skills and efficacy as a web developer but also put down a foundation for future growth and success in the ever-changing world of web development.
Okay, that’s it for today!
THANK YOU FOR CHECKING THIS POST
I hope you liked the article! ❤️
Connect with me: LinkedIn.
Explore my YouTube Channel! If you find it useful.
Please give my GitHub Projects a star ⭐️
Happy Coding! 🚀
Thanks for 22162! 🤗 | safdarali | |
1,870,695 | Sport Betting Tips | Sport Betting Tips Sports betting has become increasingly popular in recent years, with millions of... | 0 | 2024-05-30T18:58:14 | https://dev.to/mcaulaytahlia/sport-betting-tips-5918 | sport, betting, tips, treding | Sport Betting Tips
**[Sports betting](https://1acegs.net/category/sport-betting/)** has become increasingly popular in recent years, with millions of people around the world placing wagers on various sporting events. While some may see it as a harmless form of entertainment, others view it as a potentially dangerous activity that can lead to addiction and financial ruin.
https://1acegs.net/category/sport-betting/
For those looking to get involved in sports betting, it is important to have a solid understanding of the basics before diving in. One key tip for beginners is to do thorough research on the teams and players involved in the event they are betting on. This can help bettors make more informed decisions and increase their chances of winning.
Another important tip for sports bettors is to set a budget and stick to it. It can be easy to get caught up in the excitement of placing bets and potentially winning large sums of money, but it is crucial to remember that betting should be fun and not a way to make a living. By setting a budget and only betting what one can afford to lose, bettors can avoid falling into financial trouble.
It is also wise for sports bettors to shop around for the best odds before placing a bet. Different sportsbooks may offer different odds on the same event, so it pays to compare and find the best value for one's wager. Betting on events with higher odds may offer greater potential payouts, but also come with increased risk.
Lastly, sports bettors should consider using a betting strategy to help guide their decisions. Whether it's focusing on a specific sport or team, or using mathematical models to predict outcomes, having a strategy can help bettors stay disciplined and increase their chances of success.
In conclusion, sports betting can be a fun and exciting way to add some extra thrill to watching sports events. By following these tips and being responsible in one's betting practices, individuals can enjoy the experience without risking their financial stability. Remember, betting should be enjoyed in moderation and should not be relied upon as a source of income. | mcaulaytahlia |
1,870,715 | Emerging Nearshore Software Development Trends to Watch in 2024 | In this blog post, we'll explore the top seven nearshore development trends IT decision-makers should... | 0 | 2024-06-10T15:19:25 | https://dev.to/zak_e/emerging-nearshore-software-development-trends-to-watch-in-2024-3km8 | developmenttrends, recruitinginsights | ---
title: Emerging Nearshore Software Development Trends to Watch in 2024
published: true
date: 2024-05-30 18:57:18 UTC
tags: DevelopmentTrends,RecruitingInsights
canonical_url:
---
In this blog post, we'll explore the top seven nearshore development trends IT decision-makers should be aware of in 2024 and beyond. Based on insights from industry leaders, the technology trends Next Idea Tech has identified not only reflect the current state of affairs, but also forecast transformative shifts that will define the coming years.
The post [Emerging Nearshore Software Development Trends to Watch in 2024](https://blog.nextideatech.com/top-seven-nearshore-development-trends-it-decision-makers-should-be-aware-of-in-2024-and-beyond/) appeared first on [Next Idea Tech Blog](https://blog.nextideatech.com). | zak_e |
1,856,779 | Learnings on tech leading: Making estimations | Throughout my early career, I struggled with making estimations for technical work. With less than... | 0 | 2024-05-30T18:54:09 | https://dev.to/kaityhallman/learnings-on-tech-leading-making-estimations-gp7 | leadership, learning, estimations, growth | Throughout my early career, I struggled with making estimations for technical work. With less than two years experience under my belt, I had no idea how long most tasks would take, because everything was new to me. That feeling lingered for some time. I never knew how to answer the questions I got from my project managers: "When will this be done?" "How many days do you think it will take?" "Is this something you can finish this sprint?" _shrug_
A few years later, craving growth and more responsibility, I took on the role of tech lead in my team; I was the accountable person for the delivery of a specific project. One of my duties was to make estimations on technical tasks. Initially, I was pretty uncomfortable with the process and even made some mistakes. Sometimes my estimations were wrong and things did take longer than I had originally projected. Most of the time, barring any major deadlines, this was not as big of a deal as I had feared. As I tech led more, with a new found perspective, I began to identify and understand patterns that I could lean on to make me a better estimator.
The skill of making estimations can differ a great deal depending on context. Sometimes you’re estimating at a technical specification level, which is more precise and specific. Other times, we’re estimating at a high level, such as defining Objectives & Key Results (OKRs).
## OKRs & "Big" Estimations
When defining OKRs, our estimations are more an effort of prioritization. We have an overall goal (such as a goal to increase site traffic by X%). We have identified several streams of work related to meeting that goal. We look at past projects, headcount, and existing or competing workstreams to understand what can fit in a given period of time (often quarterly). We prioritize these goals to understand what must be done and what can slide.
## Using past experiences
As we dig deeper into our identified workstreams, we can utilize that knowledge of past projects to understand where points of complexity might come into play. Whether we have to create a new component or integrate with new or existing APIs, our past experiences help us define the level of effort or how long it may take to complete the task.
## Eliminate uncertainty
We should ask ourselves: of all the tasks we need to complete, what do we think will be the hardest thing to do? Whatever that is, do it first. Many times, it’s where our uncertainty comes from. If there is anything we are unsure of, we should work to answer open questions early on. Uncertainty can cause delays and large shuffles. We should try to eliminate as much uncertainty as possible.
## Parallelize!
Next, consider tasks that include external stakeholders. We should aim to parallelize it. The team can then focus on priorities within our control while our stakeholders produce required dependencies.
## Writing strong user stories
During this time, we are often working on the first draft of a tech spec. After that first draft, estimations get a little easier. We know more than we did before, after scoping our work and answering questions to unknowns. This is where the skill of writing strong user stories comes into play.
We want to have working software; we want to focus on delivering in tiers. We should be breaking our work down into atomic units, lending to milestones that bring value to our users. For instance, when working on a new feature on a non-existing page, we should first deliver the page itself as a milestone (even if it is initially barebones), then introduce the component integration later on.
## Minimize context switching
This is helpful both for your team when working on delivery, as well as minimizing context for involved stakeholders. When there are too many variables in play or the scope is too large, we might make mistakes or overlook what might have been obvious in a smaller frame of reference. A good example of this in practice is during QA test sessions. We usually bring in folks from other teams to manually test our work before release. If there are too many variables to consider, a bug may be missed or it may be difficult to contextualize.
## Breaking down work
Taking one step deeper, we may need to break down our work further and define how many days it may take for a task to be completed. That can be a little difficult to do. Even well planned and understood work can produce unknowns or difficult to answer questions. Rather than saying a task will take [x] number of days, we can look at it through a lens of relative complexity. If you know it will take one day to complete if _you_ were doing the work, use that as a baseline. We can then point other tasks relative to that level of effort. If it is an unfamiliar task or work that sets a brand new precedence, inflate that complexity. Increase. Add a point for the things you don’t know. If new work comes into play, don’t blow the scope; add it to the backlog.
## Enjoy the process
Ultimately, it comes back to writing good user stories. We don’t want to add all of the work to one ticket. Every logical component should have its own story, even if you’re working on it solo. When we learn something new, we can change our estimations. The tech spec leads us in a project and is a valuable process, but at the end of the day, our backlog is the source of truth. The process is the reward.
## In the words of Nike, just do it
Making estimations is a tough, yet valuable skill. People get better at making estimations within the context of their team and their org by doing it. Use your memory. Remember what went well or what went wrong last time, and use it as a guideline for projects in the future.
| kaityhallman |
1,870,693 | My name is Adeniji Samuel I want to design an AI machine | A post by SAMUEL ADENIJI | 0 | 2024-05-30T18:53:21 | https://dev.to/eriadura/my-name-is-adeniji-samuel-i-want-to-design-an-ai-machine-1dlb | webdev, beginners, javascript, programming | eriadura | |
1,870,692 | Why do you buy verified cash app accounts? | Why do You Buy Verified Cash App Accounts? In today's digital age, the use of online payment... | 0 | 2024-05-30T18:50:23 | https://dev.to/mcaulaytahlia/why-do-you-buy-verified-cash-app-accounts-1jj7 | cashapp, paypal, seo, bitcoin | Why do You Buy Verified Cash App Accounts? In today's digital age, the use of online payment platforms has become an integral part of our daily lives. Cash App, a popular peer-to-peer payment service, offers users a convenient and efficient way to send and receive money. However, the concept of verified Cash App accounts has gained traction among users seeking enhanced security and additional features. So, why do people buy verified Cash App accounts? Benefits of Verified Cash App Accounts Verified Cash App accounts come with a host of benefits that make them appealing to users. One of the primary advantages is the enhanced security features that provide an additional layer of protection for transactions. With verified accounts, users can enjoy increased transaction limits, allowing for more substantial transfers and payments. Moreover, verified account holders may also have access to exclusive offers, promotions, and discounts provided by Cash App. How to Buy Verified Cash App Accounts If you're considering purchasing a verified Cash App account, it's essential to do so from reputable platforms to ensure authenticity and reliability. Before making a buying decision, factors such as the seller's reputation, account verification status, and customer reviews should be taken into account. The buying process typically involves contacting the seller, verifying account details, and securely transferring payment for the purchase. Risks and Concerns Despite the benefits, buying verified Cash App accounts comes with its fair share of risks and concerns. Potential scams and fraudulent activities are prevalent in the online space, making it crucial for buyers to exercise caution. Legal implications, such as violations of Cash App's Terms of Service, can also arise from purchasing verified accounts from unauthorized sources. To mitigate risks, buyers should thoroughly research the seller, verify account legitimacy, and adopt safe payment practices. Payment Methods for Purchasing When purchasing verified Cash App accounts, various payment methods are typically accepted, including bank transfers, PayPal, and cryptocurrency. To ensure a secure transaction, buyers should opt for trusted payment options that offer buyer protection and encryption for sensitive data. Verifying the Legitimacy of the Account To authenticate the legitimacy of a verified Cash App account, buyers should check for verification badges or indicators provided by Cash App. Additionally, verifying the seller's credentials and reputation can help determine the account's authenticity and ownership status. Tips for Secure Transactions To maintain the security of verified Cash App accounts, users should implement proactive measures such as enabling two-factor authentication, monitoring account activity regularly, and safeguarding personal information against potential breaches. Legal Implications of Buying Verified Accounts Buyers should be aware of the legal implications associated with purchasing verified Cash App accounts, as violations of Cash App's Terms of Service can result in the suspension or closure of the account. Any irregularities with account ownership or fraudulent activities could lead to legal consequences. Customer Support and Assistance In case of account-related queries or disputes, users can reach out to Cash App's customer support for assistance. Resolving issues promptly and effectively can help maintain the integrity and security of verified accounts. Conclusion In conclusion, the decision to buy verified Cash App accounts stems from the desire for enhanced security, increased transaction limits, and access to exclusive perks. While the benefits are appealing, buyers should be mindful of the risks involved and take necessary precautions to safeguard their accounts and personal information. FAQs: Are verified Cash App accounts legal to purchase?
While purchasing verified Cash App accounts is not illegal, it may violate the platform's Terms of Service.
Can I transfer my existing account to a verified Cash App account?
Transferring account ownership or details is against Cash App's policies and may lead to account suspension.
What should I do if I encounter an issue with a purchased verified account?
Contact Cash App's customer support immediately to address any problems or concerns.
Are there reputable platforms or sellers for buying verified Cash App accounts?
Conduct thorough research on trusted platforms and sellers to ensure a secure purchase.
How can I verify the legitimacy of a purchased Cash App account?
Look for verification badges, check for account activity, and verify seller credentials to confirm authenticity. | mcaulaytahlia |
1,870,689 | Recursion : Python | Recursion Recursion is a programming technique where a function calls itself in order to... | 0 | 2024-05-30T18:45:03 | https://dev.to/newbie_coder/recursion-python-1jeg | python, programming, coding |
## Recursion
- Recursion is a programming technique where a function calls itself in order to solve a problem.
- The recursive approach breaks a problem down into smaller, more manageable sub-problems of the same type.
### Components of Recursion:
1. **Base Case:**
- The condition under which the recursion terminates.
- It prevents infinite recursion by providing a simple, non-recursive solution to the smallest instance of the problem.
2. **Recursive Case:**
- The part of the function where the function calls itself with a modified argument, gradually approaching the base case.
### Types of Recursion:
1. **Direct Recursion:**
- A function calls itself directly.
2. **Indirect Recursion:**
- A function calls another function, which in turn calls the original function.
### Example (Direct Recursion)
**Factorial Function:**
```python
def factorial(number):
# base case
if number == 1 or number == 0:
return 1
else:
# Recursive case
return number*factorial(number-1)
```
**Factorial of 5**
```python
fact = factorial(5)
print(f"factorial of 5 is : {fact}")
```
factorial of 5 is : 120
- Here, `factorial(5)` calls `factorial(4)`, which calls `factorial(3)`, and so on, until it reaches `factorial(1)`.
### Example (Indirect Recursion)
```python
# variable to count how many times function called
function_call_count = 0
def functionA():
# Telling function's local space that i am using global variable.
global function_call_count
# Counting function call
function_call_count += 1
print("Printing from functionA().")
# Base case to break the function call otherwise it will go infinitely calling functions.
if function_call_count == 5:
return
# function call
functionB()
def functionB():
print("Printing from functionB().")
# Function call
functionA()
```
```python
# Calling functionA()
functionA()
```
Printing from functionA().
Printing from functionB().
Printing from functionA().
Printing from functionB().
Printing from functionA().
Printing from functionB().
Printing from functionA().
Printing from functionB().
Printing from functionA().
### Advantages of Recursion:
- Simplifies the code for problems that can naturally be divided into similar sub-problems, like tree traversals, and certain mathematical computations (e.g., Fibonacci sequence).
- Provides a clear and straightforward approach to solve problems like backtracking and divide-and-conquer algorithms.
### Disadvantages of Recursion:
- Can lead to high memory usage due to the depth of the call stack, especially if the recursion depth is large.
- May result in slower performance compared to iterative solutions because of the overhead of multiple function calls.
- Risk of stack overflow if the base case is not properly defined or if the problem size is too large.
## Tail Recursion:
- A special form of recursion where the recursive call is the last operation in the function.
- Tail recursion can be optimized by the compiler to avoid increasing the call stack, converting the recursion into iteration internally.
## Example
```python
def tail_recursive_factorial(number, result = 1):
if number == 1 or number == 0:
return result
# Recursive case (only recursive case)
return tail_recursive_factorial(number-1, result*number)
```
```python
%%time
tail_recursive_factorial(5)
```
CPU times: total: 0 ns
Wall time: 0 ns
120
##### _Most Important Python Does not optimize tail recursion. Some languages does not optimizes the tail recursion, and python is one of them._
## Conclusion
- Recursion is a powerful tool in programming, enabling elegant solutions for complex problems by breaking them down into simpler sub-problems.
- However, it requires careful implementation to manage memory and performance effectively.
| newbie_coder |
1,870,688 | Buy Negative Google Reviews | https://dmhelpshop.com/product/buy-negative-google-reviews/ Buy Negative Google Reviews Negative... | 0 | 2024-05-30T18:43:57 | https://dev.to/katheogren04/buy-negative-google-reviews-4hmc | webdev, javascript, beginners, programming | ERROR: type should be string, got "https://dmhelpshop.com/product/buy-negative-google-reviews/\n\nBuy Negative Google Reviews\nNegative reviews on Google are detrimental critiques that expose customers’ unfavorable experiences with a business. These reviews can significantly damage a company’s reputation, presenting challenges in both attracting new customers and retaining current ones. If you are considering purchasing negative Google reviews from dmhelpshop.com, we encourage you to reconsider and instead focus on providing exceptional products and services to ensure positive feedback and sustainable success.\n\nWhy Buy Negative Google Reviews from dmhelpshop\nWe take pride in our fully qualified, hardworking, and experienced team, who are committed to providing quality and safe services that meet all your needs. Our professional team ensures that you can trust us completely, knowing that your satisfaction is our top priority. With us, you can rest assured that you’re in good hands.\n\nIs Buy Negative Google Reviews safe?\nAt dmhelpshop, we understand the concern many business persons have about the safety of purchasing Buy negative Google reviews. We are here to guide you through a process that sheds light on the importance of these reviews and how we ensure they appear realistic and safe for your business. Our team of qualified and experienced computer experts has successfully handled similar cases before, and we are committed to providing a solution tailored to your specific needs. Contact us today to learn more about how we can help your business thrive.\n\nBuy Google 5 Star Reviews\nReviews represent the opinions of experienced customers who have utilized services or purchased products from various online or offline markets. These reviews convey customer demands and opinions, and ratings are assigned based on the quality of the products or services and the overall user experience. Google serves as an excellent platform for customers to leave reviews since the majority of users engage with it organically. When you purchase Buy Google 5 Star Reviews, you have the potential to influence a large number of people either positively or negatively. 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When you invest in Buy Google 5 Star Reviews for your business, you can expect a significant influx of potential customers, as these reviews act as a pheromone, attracting audiences towards your products and services. Every business owner aims to maximize sales and attract a substantial customer base, and purchasing Buy Google 5 Star Reviews is a strategic move.\n\nAccording to online business analysts and economists, trust and affection are the essential factors that determine whether people will work with you or do business with you. However, there are additional crucial factors to consider, such as establishing effective communication systems, providing 24/7 customer support, and maintaining product quality to engage online audiences. If any of these rules are broken, it can lead to a negative impact on your business. Therefore, obtaining positive reviews is vital for the success of an online business\n\nWhat are the benefits of purchasing reviews online?\nIn today’s fast-paced world, the impact of new technologies and IT sectors is remarkable. Compared to the past, conducting business has become significantly easier, but it is also highly competitive. To reach a global customer base, businesses must increase their presence on social media platforms as they provide the easiest way to generate organic traffic. Numerous surveys have shown that the majority of online buyers carefully read customer opinions and reviews before making purchase decisions. In fact, the percentage of customers who rely on these reviews is close to 97%. Considering these statistics, it becomes evident why we recommend buying reviews online. In an increasingly rule-based world, it is essential to take effective steps to ensure a smooth online business journey.\n\nBuy Google 5 Star Reviews\nMany people purchase reviews online from various sources and witness unique progress. Reviews serve as powerful tools to instill customer trust, influence their decision-making, and bring positive vibes to your business. Making a single mistake in this regard can lead to a significant collapse of your business. Therefore, it is crucial to focus on improving product quality, quantity, communication networks, facilities, and providing the utmost support to your customers.\n\nReviews reflect customer demands, opinions, and ratings based on their experiences with your products or services. If you purchase Buy Google 5-star reviews, it will undoubtedly attract more people to consider your offerings. Google is the ideal platform for customers to leave reviews due to its extensive organic user involvement. Therefore, investing in Buy Google 5 Star Reviews can significantly influence a large number of people in a positive way.\n\nHow to generate google reviews on my business profile?\nFocus on delivering high-quality customer service in every interaction with your customers. By creating positive experiences for them, you increase the likelihood of receiving reviews. These reviews will not only help to build loyalty among your customers but also encourage them to spread the word about your exceptional service. It is crucial to strive to meet customer needs and exceed their expectations in order to elicit positive feedback. If you are interested in purchasing affordable Google reviews, we offer that service.\n\n\n\n\n\nContact Us / 24 Hours Reply\nTelegram:dmhelpshop\nWhatsApp: +1 (980) 277-2786\nSkype:dmhelpshop\nEmail:dmhelpshop@gmail.com" | katheogren04 |
1,870,680 | Base test profiling inside docker with test-prof | Install test-prof and stackprof gems. group :test do gem "test-prof", "~> 1.0" gem... | 0 | 2024-05-30T18:32:27 | https://dev.to/haukot/base-test-profiling-inside-docker-with-test-prof-9d4 | rails, testing, performance |
Install `test-prof` and `stackprof` gems.
```ruby
group :test do
gem "test-prof", "~> 1.0"
gem "stackprof", '>= 0.2.9', require: false
end
```
Run test with flag `TEST_STACK_PROF=1`. Better to run only part of tests or use `SAMPLE=10` flag, otherwise you could get too big of a stack dump.
```
TEST_STACK_PROF=1 bundle exec rspec spec/my_test.rb
```
Then you could visualize it.
## Visualize with speedscope
Another way is to use [speedscope](https://github.com/jlfwong/speedscope), as it provides better interface. For this, generate `json` output
```shell
stackprof --flamegraph tmp/test_prof/stack-prof-report-wall-raw-total.dump > tmp/test_prof/stack-prof-report-wall-raw-total.json
```
And upload the file to speedscope, e.g. at [https://www.speedscope.app/](https://www.speedscope.app/)
## Visualize with stackprof's viewer
Then convert flamegraph dump to html
```shell
stackprof --flamegraph tmp/test_prof/stack-prof-report-wall-raw-total.dump > tmp/test_prof/stack-prof-report-wall-raw-total.html
```
Then you could see the flamegraph with gem's viewer. From inside docker you could copy flamegraph.js and viewer.html to same shared folder, e.g. tmp folder in project.
```shell
cp /usr/local/bundle/gems/stackprof-0.2.26/lib/stackprof/flamegraph/viewer.html ./tmp/test_prof/
cp /usr/local/bundle/gems/stackprof-0.2.26/lib/stackprof/flamegraph/flamegraph.js ./tmp/test_prof/
```
And then open in the browser url like
```
file:///home/my/path_to_project_folder/tmp/test_prof/viewer.html?data=/home/my/path_to_project_folder/tmp/test_prof/stack-prof-report-wall-raw-total.html
```
### Links
* https://github.com/test-prof/test-prof Test-prof gem
* https://evilmartians.com/chronicles/testprof-a-good-doctor-for-slow-ruby-tests article about usage | haukot |
1,870,686 | Why You Should Use AWS DynamoDB For Your Applications At Scale | DynamoDB is the service that powers the Amazon.com e-commerce store which many of us purchase on... | 0 | 2024-05-30T18:41:13 | https://dev.to/urielbitton/why-you-should-use-aws-dynamodb-for-your-applications-at-scale-2l9j | dynamodb, database, scalability, aws | DynamoDB is the service that powers the Amazon.com e-commerce store which many of us purchase on almost daily.
Thanks to DynamoDB’s architecture, the e-commerce platform can handle millions of requests to read and write data per second. That’s nothing short of impressive.
However Amazon is not the only platform that can implement this. With the right knowledge, you can make use of DynamoDB yourself to create a database for your applications that will allow them to scale, literally infinitely. In this article, I’ll show you exactly how you can do this, with practical examples.
________
Subscribe to my newsletter [here](https://medium.com/@atomicsdigital/subscribe)
________
## Understanding How DynamoDB Works
In one of my previous articles, I wrote extensively about how DynamoDB works under the hood to scale to massive scales. You can check it out here:
https://medium.com/@atomicsdigital/how-focusing-on-user-needs-helped-scale-the-biggest-e-commerce-store-in-the-world-dde8bb9deffc
To summarize, DynamoDB has a fleet of storage nodes that they provision for you on demand. Each item you write to DynamoDB is hashed and stored inside a partition — and replicated to 2 other twin nodes for fail-safes — inside one of these storage nodes.
DynamoDB is a key-value store, which means each item or record is essentially an object (value) identified by a key. To retrieve an item that contains attributes of data, you specify the primary key, which consists of a partition key (like a primary key in an RDBMS) and a sort key (a key that is used for sorting the items), which together uniquely identifies a record in your table.
Each item in your table is stored inside a partition based on its partition key. So if you have 10 items with the partition key “user#101”, they will all be stored on the same partition. Then items with the partition key “user#102” will be stored on a different partition, and so on.
In the section below we’ll see how this architecture makes reads to your table super efficient.
## Why DynamoDB can scale infinitely
As your writes grow, DynamoDB will keep adding more storage nodes automatically for you, sharding your partitions, and managing the nodes themselves in case of failure.
Besides for the hyper-managed service, DynamoDB’s on-demand provisioned storage nodes allow you to create unlimited partitions to store your data in for lightning quick retrieval.
So as you have more users writing data to your database, the data is, hopefully, partitioned well across your storage nodes, enabling subsequent reads of the data to be of maximum efficiency.
In order to read an item from say a billion items stored in your database, DynamoDB simply needs to find the correct partition in which the requested item resides in, which is done in constant time or O(1), instead of querying your entire dataset, of billions of items (which would become very slow the more you scale).
So regardless of the size of your database, DynamoDB can retrieve your item(s) amongst billions of items, just as fast as if there were just a few items in your database, without doing any table scans or index lookups. Pretty mind-blowing.
The data in a particular partition then can also be retrieved very quickly because it is structured as a B-tree. A B-tree can be thought of as a dictionary, where to get a particular item whose key is “John”, you just go to the “J” section and narrow down your search as you would when consulting a dictionary.
Therefore no matter the size of your data inside that partition, the time complexity will always be O(log n), where n is the number of items inside that partition. Still a very fast lookup speed.
Aside from querying, DynamoDB also works by offering you a usage-based cost, instead of a constant cost. What is most amazing about this is you pay based on RCUs and WCUs which stands for read/write capacity units. In short, every 4kb of data you read from dynamoDB per second or 1kb for writes per second, you pay a few cents per month for. The more RCUs per second you enable on your table, the more you pay.
However, you can choose to enable on-demand provisioning and let DynamoDB scale up your reads/writes per second and scale down as well, in cases of low traffic periods. This elasticity allows you to really optimize costs in a way that doesn’t exist in any other database out there.
How to design your database for infinite scalability
Here we will get more technical and practical about how to design your database for infinite scalability.
The most important element in how you choose your partition and sort keys. I go more in-depth on this point in this article, however choosing high cardinality primary keys allows for efficient reads at any scale.
Other design patterns for high scalability include the single table design, data access patterns-based design, overloading keys and indexes, and sparse indexes. All of these patterns and techniques are discussed in great detail in this article, which is a follow-up of this article.
Finally, the most important thing to keep in mind is to group related data under a particular partition key and to keep the composite key (primary and sort key) at a high cardinality — as unique as possible.
## Conclusion
In this article, we went over the reasons why Amazon.com is able to scale so immensely using DynamoDB.
We understood how DynamoDB works under the hood and how it can route requests to the database, how it writes data to your tables, and how subsequent reads can be done so efficiently by automatically sharding your data into partitions, which are themselves stored into auto-generated store nodes which DynamoDB fully manages for you.
We understood that data inside a partition is accessed like a dictionary, enabling very fast queries.
Finally we briefly saw a glimpse of some powerful techniques that we can implement ourselves to achieve infinite scaling.
________
If you enjoyed this article please consider subscribing to my newsletter for more:
[Newsletter.](https://medium.com/@atomicsdigital/subscribe)
________
👋 My name is Uriel Bitton and I’m committed to helping you master AWS, Cloud Computing ☁️, and Serverless development. ✨
🥰 You can also follow my journey on:
- [Medium](https://medium.com/@atomicsdigital)
- [LinkedIn](https://www.linkedin.com/in/urielbitton/)
- [Substack](https://urielbitton.substack.com/)
- [X](https://x.com/edge_scorpion)
- [Threads](https://www.threads.net/@urielbitton)
- [Facebook](https://www.facebook.com/people/Success-With-AWS/61557982081725/?mibextid=ZbWKwL)
See you in the next one!
| urielbitton |
1,870,666 | Building a TailwindCSS-Powered Laravel Application with Email Verification and Queued Jobs | Building a TailwindCSS-Powered Laravel Application with Email Verification and Queued... | 0 | 2024-05-30T18:39:43 | https://dev.to/haseebmirza/building-a-tailwindcss-powered-laravel-application-with-email-verification-and-queued-jobs-1m31 | queue, email, tailwindcss, laravel | # Building a TailwindCSS-Powered Laravel Application with Email Verification and Queued Jobs
## A Comprehensive Guide to Creating a Seamless User Registration System with Email Verification in Laravel
### Introduction
In this article, we will explore how to build a Laravel application using TailwindCSS for styling. We'll focus on creating a custom user registration system that sends email verification links using Laravel's queue system. This guide will walk you through the entire process, from setting up your development environment to handling user email verification and queue jobs, ensuring a smooth and professional user experience.
### Prerequisites
Before we begin, make sure you have the following installed:
- PHP
- Composer
- Laravel
- XAMPP or any local server environment
- Node.js and npm
### Step 1: Setting Up the Laravel Project
1. **Create a new Laravel project:**
```
laravel new laravel-email-sending-with-queues
cd laravel-email-sending-with-queues
```
The full source code for this project is available on GitHub at the following link: [new laravel-email-sending-with-queues](https://github.com/haseebmirza/laravel-email-sending-with-queues)
2. **Configure environment settings in `.env`:**
```
QUEUE_CONNECTION=database
```
### Step 2: Implementing User Registration
1. **Create the Registration Controller:**
```
php artisan make:controller AuthController
```
2. **Add Registration Logic in `AuthController`:**
```
public function register(Request $request)
{
$request->validate([
'name' => 'required|string|max:255',
'email' => 'required|string|email|max:255|unique:users',
'password' => 'required|string|min:8|confirmed',
]);
$user = User::create([
'name' => $request->name,
'email' => $request->email,
'password' => Hash::make($request->password),
'email_verified_at' => null,
'verification_token' => Str::random(60),
'token_expires_at' => Carbon::now()->addMinutes(5),
]);
// Dispatch verification email job
SendVerificationEmail::dispatch($user);
return redirect('/')->with('success', 'Registration successful! Please check your email to verify your account.');
}
```
### Step 3: Sending Verification Email Using Queue
1. **Create Email Job:**
```
php artisan make:job SendVerificationEmail
```
2. **Modify Job to Send Email:**
```
public function handle()
{
Mail::to($this->user->email)->send(new VerifyEmail($this->user));
}
```
3. **Ensure Queue Worker is Running:**
```
php artisan queue:work
```
### Step 4: Creating and Sending Verification Email
1. **Create `VerifyEmail` Mailable:**
```
php artisan make:mail VerifyEmail --markdown=emails.verify
```
2. **Modify `VerifyEmail` Mailable:**
```
public function build()
{
return $this->markdown('emails.verify')->with([
'token' => $this->user->verification_token,
]);
}
```
### Step 5: Verification Email Template
1. **Create Email Template `emails/verify.blade.php`:**
```
@component('mail::message')
# Verify Your Email
Please click the button below to verify your email address.
@component('mail::button', ['url' => url('/verify-email/' . $token)])
Verify Email
@endcomponent
This verification link will expire in 5 minutes.
Thanks,<br>
{{ config('app.name') }}
@endcomponent
```
Email in inbox
### Conclusion
By following this guide, you have successfully created a Laravel application with a custom user registration system. The use of TailwindCSS provides a modern and responsive design, while the queue system ensures efficient email verification. This setup not only enhances the user experience but also improves the application's performance.
Feel free to customize the project further and share your experience in the comments below!
The full source code for this project is available on GitHub at the following link: https://github.com/haseebmirza/laravel-email-sending-with-queues
Happy coding!
| haseebmirza |
1,870,685 | **Pac-Man y los Comandos de la Línea de Comandos: ¡Come, Ejecuta, Repite! **🍒 | ¡Hola Chiquis!👋🏻 ¿Preparados para una aventura en la jungla de comandos? ¿Están listos para emprender... | 0 | 2024-05-30T18:38:48 | https://dev.to/orlidev/pac-man-y-los-comandos-de-la-linea-de-comandos-come-ejecuta-repite--5573 | programming, tutorial, webdev, security | ¡Hola Chiquis!👋🏻 ¿Preparados para una aventura en la jungla de comandos? ¿Están listos para emprender esta travesía? En este post, conoceremos los secretos de CMD, desde los comandos básicos para moverse por la jungla hasta los más poderosos para crear programas mágicos, en una travesía emocionante donde los directorios son los laberintos, los archivos las preciadas pastillas y los comandos sus habilidades especiales.
Imagina que estás jugando a Pac-Man. En este juego, Pac-Man es el programador y los comandos CMD son las píldoras de energía. Cada píldora de energía que Pac-Man consume le da una habilidad especial para optimizar su productividad y eficiencia.
En el mundo de la programación, los comandos de la línea de comandos son como los puntos amarillos en el laberinto de Pac-Man. Son pequeñas instrucciones que Pac-Man (tú, el programador) debe ejecutar para avanzar y ganar puntos. Así que, ¡prepárate para comer, ejecutar y repetir!
Imagina que los directorios son los laberintos, los archivos las pastillas y los comandos las habilidades especiales de Pac-Man. Con `CD` te moverás por el laberinto, con `DIR` descubrirás las pastillas, con ``copy`` y `MOVE` las recogerás y con `DEL` eliminarás a los fantasmas.
1. `ping` 🌐
Pac-Man: "¡Ping! ¡Ping!" 🏓 Descripción: El comando `ping` prueba la conectividad entre dos dispositivos enviando paquetes de solicitud de eco (ICMP). Es como cuando Pac-Man verifica si puede llegar a la siguiente bolita.
Ejemplo:
```
ping www.google.com
```
`ping`: Comprobar la conexión en Pac-Man: El comando `ping` es como cuando compruebas la conexión en Pac-Man. Al igual que puedes comprobar la conexión para asegurarte de que el juego de Pac-Man se ejecuta sin problemas, el comando `ping` permite a los programadores comprobar la conectividad de la red. Este comando es útil para solucionar problemas de red y garantizar una conexión estable.
2. `ipconfig` 🌐
Pac-Man: "¿Cuál es mi dirección IP?" 🤔 Descripción: `ipconfig` muestra la configuración TCP/IP de tu máquina. Es como cuando Pac-Man consulta su GPS para saber dónde está en el laberinto.
Ejemplo:
```
ipconfig /all
```
3. `cd` 📂
Pac-Man: "¡Cambia de dirección!" ↔️ Descripción: `cd` te permite cambiar de directorio. Es como cuando Pac-Man toma un atajo para llegar más rápido a las bolitas.
Ejemplo:
```
cd C:\Program Files
```
`cd` (Change Directory): Teletransporte de Pac-Man: El comando `cd` es como el teletransporte en Pac-Man. Al igual que Pac-Man puede moverse rápidamente de un lado a otro del laberinto, el comando cd permite a los programadores navegar rápidamente a través de los directorios. Por ejemplo, al escribir `cd C:\\Proyectos`, te llevará directamente al directorio "Proyectos" en la unidad C.
```
cd C:\\Proyectos
```
4. `mkdir` 📁
Pac-Man: "¡Crea un nuevo camino!" 🛣️ Descripción: `mkdir` crea un nuevo directorio. Es como cuando Pac-Man abre una nueva ruta en el laberinto.
Ejemplo:
```
mkdir Proyectos
```
`mkdir` (Make Directory): Crear frutas en Pac-Man: El comando `mkdir` es como cuando Pac-Man crea frutas. Al igual que Pac-Man puede generar frutas para obtener más puntos, el comando `mkdir` permite a los programadores crear nuevos directorios en su ubicación de trabajo actual. Por ejemplo, al escribir `mkdir NuevaCarpeta`, se creará un directorio llamado "NuevaCarpeta" en el directorio actual.
```
mkdir NuevaCarpeta
```
5. `del` 🗑️
Pac-Man: "¡Come las bolitas!" 🍒 Descripción: `del` elimina archivos. Es como cuando Pac-Man come las bolitas brillantes.
Ejemplo:
```
del archivo.txt
```
`del` (Delete Files): Comer fantasmas en Pac-Man: El comando `del` es como cuando Pac-Man come fantasmas. Al igual que Pac-Man puede comer fantasmas para obtener más puntos, el comando `del` permite a los programadores eliminar archivos. Por ejemplo, al escribir `del archivo.txt`, eliminarás el archivo "archivo.txt" del directorio actual.
6. `echo` 🗣️
Pac-Man: "¡Habla!" 💬 Descripción: `echo` muestra un mensaje en la pantalla. Es como cuando Pac-Man dice: "¡Soy el mejor comecocos!"
Ejemplo:
```
echo "¡Hola, mundo!"
```
`echo`: Hablar como Pac-Man: El comando `echo` permite a Pac-Man (el programador) mostrar mensajes o variables en la línea de comandos. Es especialmente útil para fines de scripting. Al usar el comando `echo` seguido del mensaje deseado, los programadores pueden imprimir información instantáneamente en la consola.
7. `cls` 🧹
Pac-Man: "¡Limpia el laberinto!" 🧼 Descripción: `cls` borra la pantalla. Es como cuando Pac-Man se deshace de las migas de bolita.
Ejemplo:
```
cls
```
`cls` (Clear Screen): Reiniciar el juego en Pac-Man: El comando `cls` es como cuando reinicias el juego en Pac-Man. Al igual que puedes reiniciar el juego de Pac-Man para tener un tablero limpio, el comando `cls` permite a los programadores limpiar la pantalla de la consola. Este comando es útil para mantener una consola ordenada y fácil de leer.
8. `dir` 📄
Pac-Man: "¡Muestra lo que hay en el laberinto!" 🔍 Descripción: `dir` lista los archivos y carpetas en el directorio actual. Es como cuando Pac-Man quiere ver dónde están todas las bolitas y fantasmas.
Ejemplo:
```
dir /a /w
```
`dir` (Directory): Ojos de Pac-Man: El comando `dir` es como los ojos de Pac-Man, permitiéndole ver todos los archivos y carpetas en su directorio actual. Al ejecutar el comando `dir`, puedes ver información esencial como los nombres de los archivos, los tamaños y las fechas de creación o modificación.
9. `tasklist` 📋
Pac-Man: "¿Quiénes están en el juego?" 👻 Descripción: `tasklist` muestra todas las aplicaciones y servicios que se están ejecutando. Es como cuando Pac-Man quiere saber qué fantasmas están cerca.
Ejemplo:
```
tasklist
```
`tasklist`: Ver los fantasmas en Pac-Man: El comando `tasklist` es como cuando puedes ver los fantasmas en Pac-Man. Al igual que puedes ver los fantasmas en Pac-Man para evitarlos o comerlos, el comando `tasklist` permite a los programadores ver las tareas que se están ejecutando actualmente en el sistema. Este comando es útil para monitorear el rendimiento del sistema y gestionar las tareas.
10. ``copy`` 📋➡️📋
Pac-Man: "¡Duplica las bolitas!" 🍒➕🍒 Descripción: `copy` copia archivos de un lugar a otro. Es como si Pac-Man pudiera hacer copias de las bolitas para comer más.
Ejemplo:
```
copy C:\archivo.txt D:\
```
`copy` (copy Files): Duplicar frutas en Pac-Man: El comando `copy` es como cuando Pac-Man duplica frutas. Al igual que Pac-Man puede duplicar frutas para obtener más puntos, el comando `copy` permite a los programadores copiar archivos de un lugar a otro. Por ejemplo, al escribir `copy archivo.txt carpeta\archivo_copia.txt`, copiarás el archivo "archivo.txt" al directorio "carpeta" con el nombre "archivo_copia.txt".
```
copy archivo.txt carpeta\\archivo_copia.txt
```
11. `move` 📦
Pac-Man: "¡Reorganiza el laberinto!" 🔄 Descripción: `move` mueve archivos de un directorio a otro. Es como cuando Pac-Man decide mover las bolitas para crear una estrategia mejor.
Ejemplo:
```
move C:\archivo.txt D:\NuevaCarpeta
```
`move`: El desplazamiento de Pac-Man: El comando `move` es como cuando Pac-Man se desplaza por el laberinto. Al igual que Pac-Man puede moverse para evitar fantasmas o comer píldoras, el comando `move` permite a los programadores mover archivos de un directorio a otro. Por ejemplo, al escribir `move archivo.txt carpeta\`, moverás el archivo "archivo.txt" al directorio "carpeta".
```
move archivo.txt carpeta\\
```
12. `find` 🔍
Pac-Man: "¡Encuentra la fruta escondida!" 🍎 Descripción: `find` busca texto dentro de archivos. Es como cuando Pac-Man busca las frutas especiales para obtener puntos extra.
Ejemplo:
```
find "Pac-Man" C:\archivo.txt
```
`find`: La búsqueda de frutas en Pac-Man: El comando `find` es como cuando Pac-Man busca frutas. Al igual que Pac-Man busca frutas para obtener más puntos, el comando `find` permite a los programadores buscar cadenas de texto dentro de un archivo. Por ejemplo, al escribir `find "texto" archivo.txt`, buscarás la cadena "texto" dentro del archivo "archivo.txt".
```
find "texto" archivo.txt
```
13. `exit` 🚪
Pac-Man: "¡Hora de tomar un descanso!" ☕ Descripción: `exit` cierra la ventana de la línea de comandos. Es como cuando Pac-Man se toma un merecido descanso después de una larga partida.
Ejemplo:
```
exit
```
`exit`: Salir del juego de Pac-Man: El comando `exit` es como cuando sales del juego de Pac-Man. Al igual que puedes salir del juego de Pac-Man cuando has terminado de jugar, el comando `exit` permite a los programadores cerrar la consola. Este comando es útil para mantener una consola ordenada y fácil de usar.
14. `ren` (Rename): Cambiar de fruta en Pac-Man 🍒
El comando `ren` es como cuando Pac-Man cambia de fruta. Al igual que Pac-Man puede cambiar de fruta para obtener más puntos, el comando `ren` permite a los programadores cambiar el nombre de los archivos y carpetas. Por ejemplo, al escribir `ren archivo.txt nuevo_archivo.txt`, cambiarás el nombre del archivo "archivo.txt" a "nuevo_archivo.txt" en el directorio actual.
```
ren archivo.txt nuevo_archivo.txt
```
15. `type`: Leer el tablero de Pac-Man 😄👾
El comando `type` es como cuando lees el tablero de Pac-Man. Al igual que puedes leer el tablero de Pac-Man para planificar tu estrategia, el comando `type` permite a los programadores leer el contenido de un archivo. Por ejemplo, al escribir `type archivo.txt`, leerás el contenido del archivo "archivo.txt".
```
type archivo.txt
```
Comandos Secretos de CMD: El Nivel 256 de la Línea de Comandos 🕹️👾
¡Ah, el legendario nivel 256 de Pac-Man, donde la pantalla se vuelve un caos de números y letras! En el mundo de la línea de comandos, también tenemos algunos trucos y comandos poco conocidos que pueden ser muy útiles. Aquí te presento algunos "comandos secretos" que podrían ser el equivalente al nivel 256 en CMD:
16. `tree` 🌳
Pac-Man: "¡Veamos el laberinto completo!" 🧐 Descripción: `tree` muestra una estructura gráfica de directorios y subdirectorios, similar a ver todo el laberinto de una sola vez.
Ejemplo:
```
tree /f /a
```
17. `cipher` 🔒
Pac-Man: "¡Haz que las bolitas sean invisibles para los fantasmas!" 👻 Descripción: `cipher` puede encriptar y desencriptar datos en tus directorios, haciendo que la información sea inaccesible para usuarios no autorizados.
Ejemplo:
```
cipher /e /s:"C:\Mis Documentos"
```
Encriptar archivos usando Command Prompt: Puedes usar el comando `Cipher /E` para encriptar archivos en tu PC. Esto protegerá tus datos sensibles. Recuerda que solo tú podrás abrir los archivos encriptados.
18. `driverquery` 🚗
Pac-Man: "¿Qué potencia tiene mi máquina?" 🛠️ Descripción: `driverquery` lista todos los controladores de dispositivo instalados, dándote una visión completa de los 'motores' que hacen funcionar tu sistema.
Ejemplo:
```
driverquery
```
Ver todos los controladores instalados: Utiliza el comando `driverquery` para obtener una lista de todos los controladores instalados en tu máquina.
19. `systeminfo` 💻
Pac-Man: "¡Conoce todos los secretos de tu máquina!" 🤫 Descripción: `systeminfo` proporciona información detallada sobre la configuración de tu sistema, como si descubrieras todos los secretos ocultos en el laberinto.
Ejemplo:
```
systeminfo
```
Obtener información sobre el sistema: El comando `systeminfo` proporciona detalles sobre la configuración de tu sistema.
20. `color` 🎨
Pac-Man: "¡Cambia los colores del laberinto!" 🌈 Descripción: `color` cambia el color de fondo y el texto de la ventana de CMD, permitiéndote personalizar tu experiencia en la línea de comandos.
Ejemplo:
```
color 0a # Negro de fondo y verde claro para el texto
```
Cambiar el color de la ventana de Command Prompt: Personaliza la apariencia de la ventana de CMD. Haz clic derecho en la barra de título, selecciona "Properties" y luego ajusta los colores según tus preferencias. También puedes usar el comando `color` para cambiar el color de fondo y el texto.
21. `title` 🏷️
Pac-Man: "¡Renombra tu laberinto!" ✍️ Descripción: `title` cambia el texto del título de la ventana de CMD, como si le dieras un nuevo nombre a tu nivel de Pac-Man.
Ejemplo:
```
title Mi CMD Personalizado
```
Cambiar el título de la ventana de Command Prompt: Personaliza el título de la ventana de CMD para que sea más descriptivo.
22. Modificar el texto del prompt en Command Prompt 🍇
Cambia el texto predeterminado del prompt en la ventana de CMD. Puedes hacerlo más personalizado.
Ejemplo:
```
prompt $P$G # Muestra la ruta actual
```
23. Explorar más comandos secretos 🚀🕹️
Hay muchos otros comandos interesantes. Puedes investigar más y descubrir nuevas funcionalidades. Por ejemplo, puedes verificar el estado de la batería con `powercfg /batteryreport`.
Al igual que el nivel 256 de Pac-Man, estos comandos pueden revelar características y funcionalidades ocultas de la línea de comandos que muchos no conocen. ¡Explora estos comandos con mucho cuidado y descubre lo que puedes lograr!
Conclusión
Con estos nuevos comandos, tu arsenal de herramientas CMD está más completo. Recuerda que, al igual que Pac-Man, la práctica te hará más rápido y eficiente. ¡Sigue devorando conocimiento y dominando el laberinto de la programación! Espero que estos "comandos secretos" te inspiren a experimentar y explorar más en el mundo de CMD. 😄🛠️
Así como Pac-Man necesita consumir todas las píldoras de energía para completar un nivel, un programador necesita dominar estos comandos CMD para optimizar su flujo de trabajo. ¡Espero que esta analogía de Pac-Man te ayude a recordar estos comandos CMD esenciales! 🎮🕹️
En resumen, dominar los comandos de CMD te convertirá en un héroe de la programación, capaz de navegar por la jungla digital con destreza, crear programas mágicos y conquistar cualquier desafío que se te presente.
Recuerda: la jungla de comandos puede ser intimidante al principio, pero con práctica, paciencia y una pizca de creatividad, te convertirás en un explorador experto y disfrutarás de la emoción de dominar este mundo fascinante. Así que, querido Pac-Man programador, ¡come, ejecuta y repite! 🎮 Siempre recuerda que los comandos son tus bolitas en el laberinto de la programación. ¡Buena suerte!
🚀 ¿Te ha gustado? Comparte tu opinión.
Artículo completo, visita: https://lnkd.in/ewtCN2Mn
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https://dev.to/orlidev ¡No te lo pierdas!
Referencias:
Imágenes creadas con: Copilot (microsoft.com)
##PorUnMillonDeAmigos #LinkedIn #Hiring #DesarrolloDeSoftware #Programacion #Networking #Tecnologia #Empleo #CMD
 | orlidev |
1,870,656 | PLSQL - Day 01 | Procedural Language Structured Query Language Why we need PLSQL ? In short it reduces the network... | 0 | 2024-05-30T18:37:34 | https://dev.to/technonotes/plsql-day-1-3j4i | **Procedural Language Structured Query Language**
<u>Why we need PLSQL ?</u>
In short **_it reduces the network traffic_**. How ?
1. Delete
2. Insert
3. Select
These each query will provide feedback from when its get executed each time like " 1 row inserted " , " 1 row deleted " all these REPLY is nothing but FEEDBACK.
This is called NETWORK TRAFFIC , if it happens 100 times means think about the TRAFFIC.
So if you write in PLSQL then it will give a feedback " ONLY 1 REPLY OR FEEDBACK ".
sql --> 100 statement = 100 feedback ;
plsql --> 100 statement = 1 feedback ;
Its also called **_EXTENSION TO SQL_**.
```
begin
.
.
end;
/
```
Print statement in PLSQL --> dbms_output.put_line('Hi'); --> this is called DBMS output --> Printing statement --> **Case INSENSITIVE LANGUAGE.**
```
begin
dbms_output.put_line('Hi');
dbms_output.put_line(123);
dbms_OUTPUT.put_Line(123);
DBMS_OUTPUT.put_Line(123);
end;
/
```
Below one will throw error ,
```
begin
end;
/
```
Below is basic block for PLSQL ,
```
begin
null;
end;
/
```
DCL commands --> Grant , Revoke --> Rule is there in PLSQL
DCL command can't be used directly within the procedure , as mentioned earlier , we need to use " KEY WORDS BEFORE THAT " followed by SINGLE QUOTES.
**execute immediate** 'grant ....'
These key words are called " Dynamic SQL "
```
begin
execute immediate 'grant select on t1 to user2';
end;
/
```
DDL ( Create , Alter , rename , drop ) also needs to be executed with keywords ONLY.
**_<u>DRL</u>_**
- Select statement
- INTO CLAUSE needs to be used.
- Here comes another hero , Variable --> Temporary space
- Variables needs to be declared with Data types.Eg., C EMPLOYEE%ROWTYPE; Syntax --> Variable_Name TABLENAME%DATATYPE.
- Also each variable will store only 1 row.
- Collection --> Day 1 we can't learn now :-)
```
DECLARE
C EMPLOYEE%ROWTYPE;
BEGIN
SELECT * INTO C FROM EMPLOYEE WHERE ID=100;
DBMS_OUTPUT.PUT_LINE(C.COLUMN1||C.COLUMN2);
END;
/
```
DBMS_OUTPUT.PUT_LINE(C.COLUMN1||C.COLUMN2); If you needs space means add single quotes like this --> **_DBMS_OUTPUT.PUT_LINE(C.COLUMN1||' '||C.COLUMN2);_**
## Notes :
1. **--** --> comment.
2. DCL & DDL uses keywords.
3. If you use "Select Statement" then all these error's are expected --> no data found , exact fetch issue , into clause is expected in select statement.
4. DBMS output accepts only ONE arguments or columns .
5. end statement of sql is ";".
6. end statement of plsql is "/". | technonotes | |
1,870,683 | Am I toast? | I needed a place to commiserate, so here I am. I guess I keep wondering if others are going through... | 0 | 2024-05-30T18:35:21 | https://dev.to/taylor_d7a1a3474487661ed3/am-i-toast-dan | discuss, nojobs, anxious, frontend | I needed a place to commiserate, so here I am. I guess I keep wondering if others are going through what I'm going through at the moment. I could really use an understanding community right now. I've been a front-end dev for the past 16 years, half of that time I was at a company by myself, no other devs, no senior dev to look up to. Long story short, while I was in that role, everything about the web got bigger and more complex. I was a specialist at my role, but I wasn't on the same train as newer developers. Now, I'm looking for a new job and I feel like an old used-up bag that's been crumpled up and tossed to the side while all the newer, more powerful bags are getting jobs. I got some React.js certificates, but they seem pretty useless. Can I still do this? Is my 16 years of experience worth anything? How are we doing out there devs? Are we keeping up with the times, the latest frameworks and paradigms? Are there any jobs available for someone who mostly knows Javascript, CSS and HTML? | taylor_d7a1a3474487661ed3 |
1,867,136 | Introduction to JavaScript: A Beginner's Guide | Introduction to JavaScript: A Beginner's Guide Hello, Dev community! Today, we're diving... | 0 | 2024-05-30T18:30:00 | https://dev.to/harsh_dev26/introduction-to-javascript-a-beginners-guide-3a5n | webdev, javascript, beginners, programming | # Introduction to JavaScript: A Beginner's Guide
Hello, Dev community! Today, we're diving into the world of JavaScript, one of the most popular and essential programming languages in web development. Whether you're just starting out or looking to brush up on your skills, this post will give you a solid foundation to build upon.
## What is JavaScript?
JavaScript (often abbreviated as JS) is a high-level, interpreted programming language. It's a key technology of the World Wide Web, alongside HTML and CSS. While HTML structures content and CSS styles it, JavaScript brings it to life with interactivity and dynamic behavior.
### Why Learn JavaScript?
1. **Web Development**: JavaScript is the backbone of interactive web applications. It allows you to create responsive, dynamic websites.
2. **Versatility**: It can be used on both the client-side (in the browser) and server-side (with Node.js).
3. **Community and Resources**: A vast community and plethora of resources make learning JavaScript accessible and enjoyable.
4. **Career Opportunities**: JavaScript developers are in high demand, and proficiency in JavaScript can lead to numerous career opportunities.
## Setting Up Your Environment
To start coding in JavaScript, you'll need a text editor and a browser. Here are the basic steps:
1. **Choose a Text Editor**: Some popular options include Visual Studio Code, Sublime Text, and Atom.
2. **Open Your Browser**: Modern browsers like Chrome, Firefox, or Edge are equipped with developer tools to help you test and debug your JavaScript code.
## Your First JavaScript Program
Let's write a simple "Hello, World!" program.
1. **Create an HTML file**:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>JavaScript Introduction</title>
</head>
<body>
<h1>JavaScript Introduction</h1>
<script src="script.js"></script>
</body>
</html>
```
2. **Create a JavaScript file**:
```javascript
// script.js
console.log("Hello, World!");
```
Open your HTML file in a browser, and you should see "Hello, World!" logged in the console (you can access it by right-clicking on the page, selecting "Inspect", and navigating to the "Console" tab).
## Basic Concepts
### Variables
Variables store data that can be used and manipulated throughout your code. In JavaScript, you can declare variables using `var`, `let`, or `const`.
```javascript
let name = "John";
const age = 30;
var isDeveloper = true;
```
### Data Types
JavaScript supports various data types, including:
- **String**: Text data (`"Hello"`, `'World'`)
- **Number**: Numeric data (`42`, `3.14`)
- **Boolean**: True/False values (`true`, `false`)
- **Array**: Ordered list of values (`[1, 2, 3]`)
- **Object**: Key-value pairs (`{name: "John", age: 30}`)
### Functions
Functions encapsulate reusable code blocks. They can accept parameters and return values.
```javascript
function greet(name) {
return `Hello, ${name}!`;
}
console.log(greet("Alice"));
```
### Events
JavaScript can respond to user actions like clicks, key presses, and more.
```javascript
document.querySelector("button").addEventListener("click", function() {
alert("Button clicked!");
});
```
## Conclusion
JavaScript is a powerful and versatile language that's integral to modern web development. This introduction covers the basics, but there's so much more to explore! Keep experimenting, building, and learning.
### Additional Resources
- [MDN Web Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript)
- [JavaScript.info](https://javascript.info/)
- [Eloquent JavaScript](https://eloquentjavascript.net/)
Feel free to share your thoughts, questions, or any resources that helped you learn JavaScript in the comments below. Happy coding!
---
Thank you for reading! If you enjoyed this post, please give it a like and follow me for more content on web development and programming. | harsh_dev26 |
1,869,951 | C Reflection: When the Good Old DWARF Makes Your Elves Face Their Unconscious Truth | The article is dedicated to the ability of major compilers like gcc or clang to be a source for... | 0 | 2024-05-30T18:29:12 | https://dev.to/alexey_odinokov_734a1ba32/c-self-reflection-or-when-the-good-old-dwarf-makes-your-elves-face-their-unconscious-truth-5367 | c, reflection, programming, showdev | _The article is dedicated to the ability of major compilers like gcc or clang to be a source for reflection information for C applications, which makes possible C reflection implementation like [Metac](https://github.com/aodinokov/metac). This works for elf, macho and pe formats on the corresponding platforms Linux, macOS and Windows._
Traditionally, C hasn't embraced reflection capabilities like some other programming languages. This is because C prioritizes efficiency and control. However, the lack of reflection doesn't necessarily mean a lack of introspection capabilities. Debuggers, for instance, rely heavily on debug information embedded within executable files. This information goes even beyond what reflection needs, encompassing details like types defined in the code, line numbers, source code references, symbol information and even location of variables and function arguments on the stack. One of the most common debug information formats is called [DWARF](https://en.wikipedia.org/wiki/DWARF) and it’s a native for ELF format way to expose all needed for debuggers data. Even better, this format also works for Mach-O (MacOs executable format) and PE (Windows executable format).
This begs the question: can't applications utilize this data directly to gain self-awareness? Here's why it's not as straightforward as it seems:
1. DWARF has too much information - reflection requires just a subset.
2. Shipping executables with full debug information can be undesirable due to increased size and potential security concerns.
3. Utilities like `strip` can remove debug information, rendering the application unusable.
4. It may be worth separating reflection information which may be only for part of the application from debug information.
This implies a need for a specialized tool that can efficiently read, filter, and convert DWARF data (or its equivalent in other formats) into a format usable by the application. Enter [Metac](https://github.com/aodinokov/metac).
Metac leverages this existing DWARF (or equivalent) information within the executable format to provide a targeted form of reflection for C code. This allows applications to access a relevant subset of the data, promoting introspection without the drawbacks of full debug information. Metac bridges the gap and allows C programs to query that data at runtime, enabling them to extract information about their own types, variables, and functions. This newfound self-awareness empowers C programs for more efficient debugging, dynamic behavior, and potential future functionalities.
While DWARF data is available for object files on other platforms, macOS presents a slight hurdle. On macOS, DWARF information is typically not generated by default and requires the `dsymutil` tool to create it explicitly for linked executable binary ONLY.
To ensure consistent behavior across platforms, Metac takes a two-step approach that will work on macOS and compatible with other platforms:
1. **Build with DWARF Generation**: The application is first built with special flags (_-g3 -D_METAC_OFF__) that enable DWARF generation but disable Metac functionalities during this stage.
2. **Extract and Integrate DWARF Data**: After the initial build, the DWARF information is extracted from the executable. Then, an additional C file containing reflection information is generated based on this data. Finally, the application is rebuilt with this additional file to include the necessary reflection capabilities and with Metac functionalities enabled.
This multi-step process might seem complex, but it's automated within a Makefile, simplifying the workflow for developers. It’s important to remember that Metac is getting DWARF from the complete built and linked application even though this process can be changed for other platforms.
**Let's delve into a practical example.** Imagine a C program that manages a complex data structure, like a linked list. Traditionally, debugging any issues within the structure requires manual code inspection. However, with Metac, the program can introspect its own linked list, examining elements like pointers and values. This allows for targeted debugging and manipulation of the list at runtime.
Here's a simplified code example demonstrating how Metac could be used to examine a variable of type `struct test`:
```C
// main.c
#include <stdio.h> // printf
#include <stdlib.h> // free
#include <math.h> // M_PI, M_E
#include "metac/reflect.h"
struct test {
int y;
char c;
double pi;
double e;
short _uninitialized_field;
};
int main(){
// we need to use this construction to wrap variable declaration
// to get its type information
WITH_METAC_DECLLOC(decl_location,
struct test t = {
.y = -10,
.c = 'a',
.pi = M_PI,
.e = M_E,
};
)
metac_value_t *p_val = METAC_VALUE_FROM_DECLLOC(decl_location, t);
char * s;
s = metac_entry_cdecl(metac_value_entry(p_val));
// next will output "struct test t = "
printf("%s = ", s);
free(s);
s = metac_value_string(p_val);
// next will output "{.y = -10, .c = 'a', .pi = 3.141593, .e = 2.718282, ._uninitialized_field = 0,};\n"
printf("%s;\n", s);
free(s);
metac_value_delete(p_val);
return 0;
}
```
**Explanation**:
1. We include the `metac/reflect.h` header for using Metac functions.
2. We define a structure called test with various member variables.
3. In main, we create a variable t of type struct test and initialize its members. Note: the construction `WITH_METAC_DECLLOC` just makes sure that the arbitrary C-code from the second argument is located on the same line with the declaration location variable `decl_location`.
4. We use `METAC_VALUE_FROM_DECLLOC(decl_location, t)` to get a `metac_value_t` representing the value of `t`.
5. `metac_entry_cdecl(metac_value_entry(p_val))` retrieves a C-style string representing the declaration of `t` (e.g., `struct test t`).
6. `metac_value_string(p_val)` retrieves a string representing the actual value of `t` with its member values (e.g., `{y=-10, c='a', pi=3.141593, e=2.718282, _uninitialized_field=0}`).
7. We free the allocated memory for both strings using free.
8. Finally, we call `metac_value_delete(p_val)` to clean up resources used by Metac.
This example demonstrates how Metac can be used to:
- Extract type information about a variable at runtime.
- Retrieve the actual value of the variable and its members.
This is just a basic example, but it showcases the power of Metac for C code introspection.
In order to build that it will be necessary to have Metac on the host where the build process is happening.
Here is [KBUILD](https://docs.kernel.org/kbuild/kbuild.html)-like Makefile to build the example:
```Makefile
ifeq ($(M),)
METAC_ROOT=../..
all: test target
target:
$(MAKE) -C $(METAC_ROOT) M=$(PWD) target
clean:
$(MAKE) -C $(METAC_ROOT) M=$(PWD) clean
test:
$(MAKE) -C $(METAC_ROOT) M=$(PWD) test
.PHONY: all clean test
endif
rules+= \
target \
_meta_c_app \
c_app.reflect.c \
c_app \
LDFLAGS-c_app=-Lsrc -lmetac
LDFLAGS-_meta_c_app=-Lsrc -lmetac
in_c_app+=main.o
TPL-_meta_c_app:=bin_target
IN-_meta_c_app=$(in_c_app:.o=.meta.o)
POST-_meta_c_app=$(METAC_POST_META)
TPL-c_app:=bin_target
IN-c_app=$(in_c_app) c_app.reflect.o
DEPS-c_app=src/libmetac.a
TPL-c_app.reflect.c:=metac_target
METACFLAGS-c_app.reflect.c+=run metac-reflect-gen $(METAC_OVERRIDE_IN_TYPE)
IN-c_app.reflect.c=_meta_c_app
TPL-target:=phony_target
IN-target:=c_app
```
**Explanation**:
1. The part from `ifeq` to `endif` works exactly like in KBUILD. It’s possible to run `make all METAC_ROOT=<path to the Metac root>` in order to build this example.
2. The rest of the file is used to define rules which are going to be generated to build the example using multi-step process described in the beginning. The variable `rules` list those:
Rule `target`:
```Makefile
TPL-target:=phony_target
IN-target:=c_app
```
which is generated as `.PHONY` and that requires the final target `c_app` to be built using the corresponding rules.
Rule `c_app`:
```Makefile
TPL-c_app:=bin_target
IN-c_app=$(in_c_app) c_app.reflect.o
DEPS-c_app=src/libmetac.a
```
is a rule to build executable binary out of `main.o` and `c_app.reflect.o` and `libmetac.a`. Make knows how to build main.o automatically from main.c. Where do we get `c_app.reflect.o` from? From `c_app.reflect.c`:
Rule `c_app.reflect.c`:
```Makefile
TPL-c_app.reflect.c:=metac_target
METACFLAGS-c_app.reflect.c+=run metac-reflect-gen $(METAC_OVERRIDE_IN_TYPE)
IN-c_app.reflect.c=_meta_c_app
```
is a rule which employs a `metac` tool with arguments `run metac-reflect-gen $(METAC_OVERRIDE_IN_TYPE)`. Input file is `_meta_c_app`. This combination will instruct metac to read DWARF data from `_meta_c_app`. Parameter `METAC_OVERRIDE_IN_TYPE` is used to specify if metac must expect elf, macho or pe as input. `metac-reflect-gen` is a go-template module name which generates `c_app.reflect.c`.
Rule `_meta_c_app`:
```Makefile
TPL-_meta_c_app:=bin_target
IN-_meta_c_app=$(in_c_app:.o=.meta.o)
POST-_meta_c_app=$(METAC_POST_META)
```
Similar to `c_app`, but it uses `main.meta.o` as source. The only difference between `main.meta.o` and `main.o` is that the first was built with flags `-g3 -D_METAC_OFF_`.
If we run make on macOS we should see:
```bash
% make
/Library/Developer/CommandLineTools/usr/bin/make -C ../.. M=/Users/user/Workspace/metac/examples/c_app_simplest test
/Library/Developer/CommandLineTools/usr/bin/make -C ../.. M=/Users/user/Workspace/metac/examples/c_app_simplest target
cc -I./include -c -MMD -MF /Users/user/Workspace/metac/examples/c_app_simplest/main.d -MP -MT '/Users/user/Workspace/metac/examples/c_app_simplest/main.o /Users/user/Workspace/metac/examples/c_app_simplest/main.d' -o /Users/user/Workspace/metac/examples/c_app_simplest/main.o /Users/user/Workspace/metac/examples/c_app_simplest/main.c
cc -I./include -g3 -D_METAC_OFF_ -c -MMD -MF /Users/user/Workspace/metac/examples/c_app_simplest/main.meta.d -MP -MT '/Users/user/Workspace/metac/examples/c_app_simplest/main.meta.o /Users/user/Workspace/metac/examples/c_app_simplest/main.meta.d' -o /Users/user/Workspace/metac/examples/c_app_simplest/main.meta.o /Users/user/Workspace/metac/examples/c_app_simplest/main.c
cc /Users/user/Workspace/metac/examples/c_app_simplest/main.meta.o -Lsrc -lmetac -o /Users/user/Workspace/metac/examples/c_app_simplest/_meta_c_app
(which dsymutil) && dsymutil /Users/user/Workspace/metac/examples/c_app_simplest/_meta_c_app || echo "Couldn't find dsymutil"
/usr/bin/dsymutil
./metac run metac-reflect-gen -s 'path_type: "macho"' -s 'path: "/Users/user/Workspace/metac/examples/c_app_simplest/_meta_c_app"' > /Users/user/Workspace/metac/examples/c_app_simplest/c_app.reflect.c
cc -I./include -c -MMD -MF /Users/user/Workspace/metac/examples/c_app_simplest/c_app.reflect.d -MP -MT '/Users/user/Workspace/metac/examples/c_app_simplest/c_app.reflect.o /Users/user/Workspace/metac/examples/c_app_simplest/c_app.reflect.d' -o /Users/user/Workspace/metac/examples/c_app_simplest/c_app.reflect.o /Users/user/Workspace/metac/examples/c_app_simplest/c_app.reflect.c
cc /Users/user/Workspace/metac/examples/c_app_simplest/main.o /Users/user/Workspace/metac/examples/c_app_simplest/c_app.reflect.o -Lsrc -lmetac -o /Users/user/Workspace/metac/examples/c_app_simplest/c_app
```
Now if we run the application we’ll see:
```bash
% ./c_app
struct test t = {.y = -10, .c = 'a', .pi = 3.141593, .e = 2.718282, ._uninitialized_field = 0,};
```
The example can be found [here](https://github.com/aodinokov/metac/tree/main/examples/c_app_simplest).
More information on how to use metac can be found [here](https://github.com/aodinokov/metac/blob/main/doc/demo/README.md#how-to-demo)
**Conclusion**:
Metac isn't just a tool; it's a path to self-improvement for your C code. With DWARF's insights and metac's interpretation, your programs can shed light on their "unconscious" behaviors and unlock their full potential.
| alexey_odinokov_734a1ba32 |
1,870,678 | 🚀 Introducing EaseTheMallShopping 🚀 | I am excited to share my latest project 🚀 Introducing EaseTheMallShopping 🚀 🎯 Project Objective: Save... | 0 | 2024-05-30T18:27:08 | https://dev.to/sakshi_k_270668640c366d74/introducing-easethemallshopping-2pj2 | I am excited to share my latest project
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Help users find the best deals and offers quickly and efficiently.
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Compare prices of similar products across different shops in the mall.
Identify shops offering the best deals on the same item.
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Calculate discounts and total prices after discounts.
Identify additional perks like free gifts based on your purchase amount.
Shop Categorization:
Categorize shops into different types like clothing and electronics.
Provide detailed information about each shop, including item descriptions, quality, and size options.
Optimized Shopping Route:
Suggest the best shop to visit based on price and discounts.
Help users save time by avoiding unnecessary visits to multiple shops.
User-Friendly Interface:
Simple and intuitive interface for easy navigation.
Provide detailed shop descriptions, special offers, and mall maps.
🔹 Mall Structure Map:
1st Floor:
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2nd Floor:
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Special Offers:
Highlights of the day’s special offers from various shops.
🔹 Tech Stack:
Language: Java
Development Tools: IntelliJ IDEA, Eclipse
Libraries: Java Collections Framework, Abstract Classes, and Interfaces
🔹 Objective:
My primary goal is to enhance the shopping experience by providing a comprehensive comparison tool that saves time and ensures the best deals for users. This project aims to streamline the decision-making process, making mall shopping more efficient and enjoyable.
https://lnkd.in/dNT-DPbN
🔹 Looking for Opportunities:
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📢 Connect with me discuss potential job opportunities or collaborations! Let's make shopping easier and more enjoyable together!
| sakshi_k_270668640c366d74 | |
1,870,677 | Bridging the Gap: Understanding the Need for Cryptocurrency Education | Millennials turned out to be the most confident generation in their knowledge of cryptocurrencies.... | 0 | 2024-05-30T18:27:01 | https://36crypto.com/bridging-the-gap-understanding-the-need-for-cryptocurrency-education/ | cryptocurrency, news, education | Millennials turned out to be the most confident generation in their knowledge of cryptocurrencies. This became known from a recent market [research](https://preply.com/en/blog/crypto-slang-perceptions/) conducted by Preply, a language course platform. Despite this, the survey showed that 60% of US residents do not understand blockchain technology.
**Percentage Confident in Their Crypto Knowledge**
The results of the Preply study revealed a gender gap, showing that men tend to feel more confident in their knowledge of cryptocurrency than women. However, while 46% of respondents expressed their confidence overall, a significant portion of crypto investors themselves (35%) had doubts about their understanding of cryptocurrencies, and 3 out of 5 (60%) did not know what blockchain was. This uncertainty was most prevalent among Generation Z investors, 40% of whom had doubts about their knowledge. The survey also revealed a significant awareness gap regarding NFTs and the meta-universe. Only 42% of respondents expressed confidence in their knowledge.
Source: Preply
Despite this, users are still showing interest. 53% of non-crypto investors are interested in learning more — most of them are Generation X. Of these, 27% said they would like to take courses to learn more about cryptocurrencies. That’s why having easy-to-understand educational resources is important to sustain this demand.
**Ensuring the Educational Aspect of the Industry**
The development of the educational process is undoubtedly the basis for the development of the industry. With the popularization of digital assets, the need to maintain users’ knowledge is also growing. A few years ago, it was quite problematic to find educational resources to enrich one’s knowledge, but now this issue is no longer so acute. After all, numerous training courses have been developed, and their number is constantly increasing.
For example, the University of Applied Sciences of Business Administration Zurich has recently [launched](https://www.20min.ch/story/zuerich-europaweit-einzigartig-hwz-lanciert-bitcoin-lehrgang-103114566) a Bitcoin education course for those planning to integrate cryptocurrency into new business models. In addition, there are already several universities in the world that offer relevant blockchain education programs: the University of Nicosia, Massachusetts Institute of Technology, Cambridge University, etc.
However, support for the educational aspect of the industry does not end with universities. There is also a significant number of educational resources for users of different levels of complexity: from beginners to advanced.
Among them are learning platforms from crypto exchanges OKX, Bitget, Binance, etc., the WhiteBIT educational program in partnership with FC Barcelona “Game-changing technologies: Mastering Blockchain”, and countless other courses such as LearnCrypto and Coursera.
**Institutional Investors Enter Cryptocurrency**
The interest in cryptocurrencies is growing, and this is demonstrated by other surveys. According to a KPMG [study](https://www.irmagazine.com/shareholder-targeting-id/institutional-investors-boost-crypto-holdings-finds-survey), institutional investors have become more interested in digital assets. One-third of the respondents have at least 10% of their portfolio in crypto assets, compared to only one-fifth of those surveyed two years ago.
KPMG also investigated the reasons for this increased interest. The majority (67%) cited market development as an important factor. 58% of respondents mentioned the high market performance of cryptocurrencies as a motivating factor for their investments. In recent years, the market performance of crypto assets has shown significant growth. Furthermore, the approval of spot Bitcoin ETFs in January also played a role in expanding institutional investor involvement.
In addition, the PitchBook [report](https://pitchbook.com/news/reports/q1-2024-global-private-market-fundraising-report) shows that in the first quarter of 2024, funding for crypto startups reached $2.4 billion. This means a 40% increase in invested capital compared to the last quarter of 2023.
_“With positive investor sentiment returning to crypto and barring any major market downturns, we expect the volume and pace of investments to continue increasing throughout the year,”_ PitchBook analysts wrote in the report.
**Summary**
Although a large percentage of people are still unsure of their knowledge of cryptocurrencies, interest in them is potentially growing. This is especially true for non-crypto investors who are ready to gain more knowledge. Such moments emphasize the importance of accessible and high-quality educational resources to sustain interest and raise awareness. Therefore, various educational programs play an important role in the development of the cryptocurrency industry. Thus, the development of the educational process, combined with positive market trends, creates a favorable environment for the growth and spread of blockchain technologies. | hryniv_vlad |
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1,870,651 | Security Protocol to connect AWS SES | Lets take a look on another AWS services know as Amazon SES and understand the security protocol... | 0 | 2024-05-30T18:25:51 | https://dev.to/rgupta87/security-protocol-to-connect-aws-ses-2jia | aws, ses, security, emailsecurity | Lets take a look on another AWS services know as Amazon SES and understand the security protocol around that. This could be useful when you send email to receiver and how we can securely deliver it.
Lets learn about Amazon SES service first with some basic details:-
**What is Amazon SES**
Amazon SES stands for Simple Email Service. It is one of the cost-effective, scalable, reliable email service designed to help the organization, application developers, digital marketers to send notification, and transactional emails. It is one of the powerful service for all kinds of business to integrate with various others AWS services to provide a robust platform for managing and optimizing the organization's email communications.
Integrating Amazon SES into your applications, whether via the **<u>API</u>** or **<u>SMTP interface</u>**, requires strict adherence to security protocols to ensure email delivery integrity and protect the data. Here are detailed best practices for securing your Amazon SES integration:-
**<u>1) Amazon SES API Integration Security</u>** - When using Amazon Simple Email Service (SES) to send emails via the API, it's essential to utilize Transport Layer Security (TLS) to encrypt your data and protect it from potential threats.
**Transport Layer Security** (TLS) is a well known cryptographic protocol designed to provide secure communication over a computer network. Its a critical protocol that provides and ensures integrity, data security, and authentication between your application and the Amazon SES service.
**Steps to Securely Use Amazon SES API with TLS**
- **Use IAM Policies** - Use below IAM policies to make sure that IAM user has enough permission to send email using amazon SES.
- **AWS SDK and HTTPS** - We can utilize AWS SDK or HTTPS request to make API request to AWS SES. When you use the Amazon SES API over HTTPS, TLS encryption is automatically applied to all API requests.
- **HTTPS API Request** - We can use HTTPS endpoint to make sure that data is fully encrypted.
**Simple diagram created in text editor for TLS Encryption with Amazon SES API**
**<u>2) Amazon SES SMTP Interface Security</u>** - For securing the communication channel, there are two primary methods are required such as **STARTTLS** and **TLS Wrapper**.
**STARTTLS** - It is a command used to upgrade an existing plaintext connection to a secure, encrypted connection using Transport Layer Security (TLS).
**Lets understand how STARTTLS Works:**
- The client connects to SMTP server over plaintext connection.
- Send STARTTLS command to the server.
- Server send the response and initiate TLS handshake.
- Communication is encrypted between client and server once TLS handshake is complete.
**TLS Wrapper** - This is also known as SMTPS or "SMTP over TLS," establishes an encrypted connection from the outset.
**Lets understand how TLS Wrapper Works:**
- The client connects to the SMTP server using a specific dedicated port 465 for TLS.
- The TLS handshake occurs immediately upon connection, before any SMTP commands are exchanged.
- Communication from the start is encrypted and provide robust security.
**Simple diagram created in text editor with STARTTLS and TLS wrapper with Amazon SES API**
**Conclusion**
Overall, Its crucial to implementing these security protocols when using Amazon SES, whether through the API or SMTP interface to maintaining the integrity, security and confidentiality of your communications.
**Happy Learning!!** | rgupta87 |
1,870,675 | 150+ FREE APIs Every Developer Needs to Know | Table of Contents Weather APIs ⛅️🌦️🌩️ Exchange Rates APIs 💱💲💹 Cryptocurrency APIs... | 0 | 2024-05-30T18:24:52 | https://dev.to/falselight/150-free-apis-every-developer-needs-to-know-28j1 | webdev, api, developer, beginners | ## Table of Contents
1. [Weather APIs ⛅️🌦️🌩️](#weather-apis)
2. [Exchange Rates APIs 💱💲💹](#exchange-rates-apis)
3. [Cryptocurrency APIs ₿💰🔗](#cryptocurrency-apis)
4. [Placeholder Image APIs 📸🖼️🎨](#placeholder-image-apis)
5. [Random Generators APIs 🎲🔀🎰](#random-generators-apis)
6. [News APIs 📰📢🗞️](#news-apis)
7. [Maps and Geolocation APIs 🗺️📍🌍](#maps-and-geolocation-apis)
8. [Search APIs 🔍📑🕵️](#search-apis)
9. [Machine Learning APIs 🤖🧠🔮](#machine-learning-apis)
10. [Screenshot and Picture APIs 📷🌐🖼️](#screenshot-and-picture-apis)
11. [URL Shortening APIs 🔗💻📄](#url-shortening-apis)
12. [Social Media APIs 🐦📹🎶](#social-media-apis)
13. [SEO APIs 🔍📈💡](#seo-apis)
14. [Shopping APIs 🛍️🛒📦](#shopping-apis)
15. [Developer APIs 💻🔧🛠️](#developer-apis)
[Qit.tools](https://qit.tools/) - ⚡ Interactive Online Web 🛠️ Tools
## Weather APIs ⛅️🌦️🌩️
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|--------------------|------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| OpenWeatherMap | Weather data for any location. | 60 calls per minute | API Key | Free with limited usage | [OpenWeatherMap Docs](https://openweathermap.org/api) |
| Weatherstack | Real-time weather data. | 250 requests per month | API Key | Free with limited usage | [Weatherstack Docs](https://weatherstack.com/documentation) |
| Climacell (Tomorrow.io) | Hyper-local weather data. | 500 requests per month | API Key | Free with limited usage | [Climacell Docs](https://www.climacell.co/weather-api/) |
| WeatherAPI | Real-time weather data. | 1,000 calls per day | API Key | Free with limited usage | [WeatherAPI Docs](https://www.weatherapi.com/docs/) |
| MetaWeather | Weather data for any location. | No strict limits | None | Free | [MetaWeather Docs](https://www.metaweather.com/api/) |
| Open-Meteo | Free weather forecast API. | No strict limits | None | Free | [Open-Meteo Docs](https://open-meteo.com/en/docs) |
| Weatherbit | Weather data and forecasts. | 150 calls per day | API Key | Free with limited usage | [Weatherbit Docs](https://www.weatherbit.io/api) |
| Visual Crossing | Global weather data and forecasts. | 1,000 calls per day | API Key | Free with limited usage | [Visual Crossing Docs](https://www.visualcrossing.com/documentation/weather-api) |
## Exchange Rates APIs 💱💲💹
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|-----------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| ExchangeRate-API | Exchange rates for any currency. | 1,500 requests per month | API Key | Free with limited usage | [ExchangeRate-API Docs](https://www.exchangerate-api.com/docs/) |
| Frankfurter | Exchange rates and currency conversion. | No strict limits | None | Free | [Frankfurter Docs](https://www.frankfurter.app/docs) |
| Open Exchange Rates | Real-time and historical exchange rates. | 1,000 requests per month | API Key | Free with limited usage | [Open Exchange Rates Docs](https://docs.openexchangerates.org/) |
| Fixer.io | Exchange rates and currency conversion. | 1,000 requests per month | API Key | Free with limited usage | [Fixer.io Docs](https://fixer.io/documentation) |
| CurrencyLayer | Real-time exchange rates and currency conversion. | 1,000 requests per month | API Key | Free with limited usage | [CurrencyLayer Docs](https://currencylayer.com/documentation) |
| XE.com | Real-time and historical exchange rates. | 100,000 API units per month | API Key | Free with limited usage | [XE.com Docs](https://xecdapi.xe.com/) |
| 1Forge | Real-time Forex and Cryptocurrency data. | 500 requests per day | API Key | Free with limited usage | [1Forge Docs](https://1forge.com/forex-data-api) |
| OANDA Exchange Rates | Exchange rates and currency data. | No strict limits (free tier) | API Key | Free with limited usage | [OANDA Docs](https://developer.oanda.com/) |
| Currency API | Real-time exchange rate data for 150+ currencies. | 1,000 requests per month | API Key | Free with limited usage | [Currency API Docs](https://currencyapi.com/docs) |
| ExchangeRatesAPI.io | Reliable exchange rates and currency conversion. | 1,000 requests per month | API Key | Free with limited usage | [ExchangeRatesAPI.io Docs](https://exchangeratesapi.io/documentation/) |
| Exchangerate.host | Free foreign exchange rates and currency conversion. | 5,000 requests per month | None | Free with limited usage | [Exchangerate.host Docs](https://exchangerate.host/#/docs) |
| Free Forex API | Real-time Forex rates and currency conversion. | 1,000 requests per month | API Key | Free with limited usage | [Free Forex API Docs](https://www.freeforexapi.com/) |
| Xignite | Financial market data including exchange rates. | 100 requests per hour | API Key | Free with limited usage | [Xignite Docs](https://www.xignite.com/) |
## Cryptocurrency APIs ₿💰🔗
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|--------------------|------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| CoinGecko | Comprehensive cryptocurrency market data. | No strict limits | None | Free | [CoinGecko Docs](https://www.coingecko.com/en/api) |
| CoinAPI | Real-time and historical cryptocurrency data. | 100 requests per day | API Key | Free with limited usage | [CoinAPI Docs](https://docs.coinapi.io/) |
| Nomics | Cryptocurrency market cap & pricing data. | 1,000 requests per day | API Key | Free with limited usage | [Nomics Docs](https://nomics.com/docs/) |
| CryptoCompare | Real-time and historical cryptocurrency data. | 250,000 calls per month | API Key | Free with limited usage | [CryptoCompare Docs](https://min-api.cryptocompare.com/documentation) |
| CoinCap | Real-time cryptocurrency market data. | 200 requests per minute | API Key | Free with limited usage | [CoinCap Docs](https://docs.coincap.io/) |
| CoinMarketCap | Cryptocurrency market cap and pricing data. | 10,000 requests per month | API Key | Free with limited usage | [CoinMarketCap Docs](https://coinmarketcap.com/api/documentation/v1/) |
| CoinLore | Cryptocurrency prices and market data. | No strict limits | None | Free | [CoinLore Docs](https://www.coinlore.com/cryptocurrency-data-api) |
| Messari | Cryptocurrency market data, news, and metrics. | 50 requests per second | API Key | Free with limited usage | [Messari Docs](https://messari.io/api) |
| BraveNewCoin | Real-time and historical cryptocurrency data. | 1,000 requests per month | API Key | Free with limited usage | [BraveNewCoin Docs](https://bravenewcoin.com/developers) |
| Coinpaprika | Cryptocurrency market cap, pricing, and historical data. | 25,000 requests per month | API Key | Free with limited usage | [Coinpaprika Docs](https://api.coinpaprika.com/) |
| CoinAPI.io | Market data for cryptocurrencies. | 100 requests per day | API Key | Free with limited usage | [CoinAPI.io Docs](https://docs.coinapi.io/) |
| Coinlib | Real-time cryptocurrency prices and market data. | 10,000 requests per month | API Key | Free with limited usage | [Coinlib Docs](https://coinlib.io/apidocs) |
| Bitfinex | Real-time cryptocurrency trading data. | No strict limits | None | Free | [Bitfinex Docs](https://docs.bitfinex.com/docs) |
| Binance | Real-time cryptocurrency trading data. | 1,200 requests per minute | API Key | Free with limited usage | [Binance Docs](https://binance-docs.github.io/apidocs/spot/en/) |
| Kraken | Real-time and historical cryptocurrency trading data.| No strict limits | API Key | Free | [Kraken Docs](https://www.kraken.com/features/api) |
## Placeholder Image APIs 📸🖼️🎨
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|----------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| Placeholder.com | Generates customizable placeholder images. | No strict limits | None | Free | [Placeholder.com Docs](https://placeholder.com/) |
| Lorem Picsum | Generates random placeholder images. | No strict limits | None | Free | [Lorem Picsum Docs](https://picsum.photos/) |
| PlaceIMG | Provides placeholder images for any size and category. | No strict limits | None | Free | [PlaceIMG Docs](https://placeimg.com/) |
| FillMurray | Placeholder images of Bill Murray. | No strict limits | None | Free | [FillMurray Docs](http://www.fillmurray.com/) |
| PlaceCage | Placeholder images of Nicolas Cage. | No strict limits | None | Free | [PlaceCage Docs](http://www.placecage.com/) |
| PlaceBear | Placeholder images of bears. | No strict limits | None | Free | [PlaceBear Docs](http://placebear.com/) |
| DummyImage.com | Customizable placeholder images with text. | No strict limits | None | Free | [DummyImage.com Docs](https://dummyimage.com/) |
| PlaceKitten | Placeholder images of kittens. | No strict limits | None | Free | [PlaceKitten Docs](https://placekitten.com/) |
| PlaceDog | Placeholder images of dogs. | No strict limits | None | Free | [PlaceDog Docs](https://place.dog/) |
| PlaceKeanu | Placeholder images of Keanu Reeves. | No strict limits | None | Free | [PlaceKeanu Docs](https://placekeanu.com/) |
| BaconMockup | Placeholder images of bacon. | No strict limits | None | Free | [BaconMockup Docs](https://baconmockup.com/) |
| FakeImg.pl | Customizable placeholder images with text and colors. | No strict limits | None | Free | [FakeImg.pl Docs](https://fakeimg.pl/) |
| Placeholder Image Generator | Simple placeholder images with customizable size and text. | No strict limits | None | Free | [Placeholder Image Generator Docs](https://placeholder-image.dev/) |
| Pixelholdr | Customizable placeholder images for web designers. | No strict limits | None | Free | [Pixelholdr Docs](https://pixelholdr.com/) |
| LoremFlickr | Random placeholder images from Flickr. | No strict limits | None | Free | [LoremFlickr Docs](https://loremflickr.com/) |
## Random Generators APIs 🎲🔀🎰
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|-------------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| Random.org | Generates random numbers, sequences, and other data. | Varies, daily quotas apply | API Key | Free with limited usage | [Random.org Docs](https://api.random.org/json-rpc/4/) |
| RandomUser.me | Generates random user data (name, email, address, etc.)| No strict limits | None | Free | [RandomUser.me Docs](https://randomuser.me/documentation) |
| FakerAPI.it | Generates fake data for testing and development. | 100 requests per month | API Key | Free with limited usage | [FakerAPI.it Docs](https://fakerapi.it/en) |
| Dicebear Avatars | Generates random avatars. | No strict limits | None | Free | [Dicebear Avatars Docs](https://avatars.dicebear.com/) |
| Random Data API | Generates random data such as names, addresses, and more. | No strict limits | None | Free | [Random Data API Docs](https://random-data-api.com/documentation) |
| Namefake.com | Generates random names and related data. | No strict limits | None | Free | [Namefake.com Docs](https://namefake.com/api) |
| Randommer.io | Generates random data including text, numbers, and more. | 100 requests per day | API Key | Free with limited usage | [Randommer.io Docs](https://randommer.io/randommer-api) |
| Uinames | Generates random names based on country. | No strict limits | None | Free | [Uinames Docs](https://uinames.com/api) |
| TheDogAPI | Generates random pictures of dogs. | 10,000 requests per month | API Key | Free with limited usage | [TheDogAPI Docs](https://thedogapi.com/documentation) |
| BoredAPI | Suggests random activities to overcome boredom. | No strict limits | None | Free | [BoredAPI Docs](https://www.boredapi.com/documentation) |
| YesNo.wtf | Returns random yes or no answers. | No strict limits | None | Free | [YesNo.wtf Docs](https://yesno.wtf/) |
| RandomWordAPI | Generates random words. | No strict limits | None | Free | [RandomWordAPI Docs](https://random-word-api.herokuapp.com/home) |
| PiplAPI | Generates random personal profiles. | No strict limits | None | Free | [PiplAPI Docs](https://pipl.ir/v1) |
| RandomFox | Generates random pictures of foxes. | No strict limits | None | Free | [RandomFox Docs](https://randomfox.ca/floof/) |
| Random Quotes API | Generates random quotes. | No strict limits | None | Free | [Random Quotes API Docs](https://api.quotable.io/) |
## News APIs 📰📢🗞️
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|----------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| NewsAPI | Fetch news articles from various sources. | 500 requests per day | API Key | Free with limited usage | [NewsAPI Docs](https://newsapi.org/docs) |
| Currents API | Latest news from various sources. | 100 requests per day | API Key | Free with limited usage | [Currents API Docs](https://currentsapi.services/en/docs/) |
| Mediastack | Real-time news data. | 500 requests per month | API Key | Free with limited usage | [Mediastack Docs](https://mediastack.com/documentation) |
| ContextualWeb News | Search for news articles. | 10,000 requests per month | API Key | Free with limited usage | [ContextualWeb Docs](https://rapidapi.com/contextualwebsearch/api/websearch) |
| GDELT | Analyzes global news events. | No strict limits | None | Free | [GDELT Docs](https://blog.gdeltproject.org/gdelt-2-0-our-global-world-in-realtime/) |
| The Guardian API | Access articles and content from The Guardian. | 12,000 requests per day | API Key | Free with limited usage | [The Guardian Docs](https://open-platform.theguardian.com/documentation/) |
| NY Times API | Access articles and content from The New York Times. | 4,000 requests per day | API Key | Free with limited usage | [NY Times Docs](https://developer.nytimes.com/apis) |
| NewsData.io | Real-time news data. | 200 requests per day | API Key | Free with limited usage | [NewsData.io Docs](https://newsdata.io/docs) |
| Bing News Search API | Search for news articles. | 3 requests per second | API Key | Free with limited usage | [Bing News Docs](https://www.microsoft.com/en-us/bing/apis/bing-news-search-api-v7) |
| Event Registry API | Real-time news monitoring and analytics. | 1,000 requests per day | API Key | Free with limited usage | [Event Registry Docs](https://eventregistry.org/documentation) |
| Webz.io News API | Access news articles from various sources. | 100 requests per day | API Key | Free with limited usage | [Webz.io Docs](https://webz.io/api/) |
| Aylien News API | News and blog content with analysis features. | 1,000 requests per day | API Key | Free with limited usage | [Aylien Docs](https://docs.aylien.com/newsapi/) |
| NewsCatcher API | Real-time news from 50,000 sources worldwide. | 500 requests per month | API Key | Free with limited usage | [NewsCatcher Docs](https://newscatcherapi.com/documentation) |
| ContextualWeb News | News articles search engine. | 10,000 requests per month | API Key | Free with limited usage | [ContextualWeb Docs](https://rapidapi.com/contextualwebsearch/api/websearch) |
| News River API | Access to 70+ million articles from news sources. | 250 requests per day | API Key | Free with limited usage | [News River Docs](https://www.newsriver.io/) |
## Maps and Geolocation APIs 🗺️📍🌍
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|----------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| OpenStreetMap | Free editable map of the world. | No strict limits | None | Free | [OpenStreetMap Docs](https://wiki.openstreetmap.org/wiki/API) |
| Mapbox | Maps and location data for web and mobile applications.| 50,000 requests per month | API Key | Free with limited usage | [Mapbox Docs](https://docs.mapbox.com/) |
| OpenCage Geocoder | Forward and reverse geocoding. | 2,500 requests per day | API Key | Free with limited usage | [OpenCage Docs](https://opencagedata.com/api) |
| Geoapify | Geocoding, routing, and places data. | 3,000 requests per day | API Key | Free with limited usage | [Geoapify Docs](https://apidocs.geoapify.com/docs) |
| Positionstack | Real-time forward and reverse geocoding. | 25,000 requests per month | API Key | Free with limited usage | [Positionstack Docs](https://positionstack.com/documentation) |
| HERE Geocoding and Search | Geocoding and places data. | 250,000 transactions per month | API Key | Free with limited usage | [HERE Docs](https://developer.here.com/documentation/geocoding-search-api/dev_guide/index.html) |
| LocationIQ | Geocoding and reverse geocoding. | 5,000 requests per day | API Key | Free with limited usage | [LocationIQ Docs](https://locationiq.com/docs) |
| MapQuest | Mapping, geocoding, and routing services. | 15,000 transactions per month | API Key | Free with limited usage | [MapQuest Docs](https://developer.mapquest.com/documentation/) |
| BigDataCloud | IP geolocation and reverse geocoding. | 10,000 requests per month | API Key | Free with limited usage | [BigDataCloud Docs](https://www.bigdatacloud.com/geocoding-apis) |
| IP Geolocation API | Geolocate an IP address. | 30,000 requests per month | API Key | Free with limited usage | [IP Geolocation Docs](https://ipgeolocation.io/documentation) |
| Geocode.xyz | Geocoding and reverse geocoding. | 1 request per second | None | Free | [Geocode.xyz Docs](https://geocode.xyz/api) |
| Nominatim | Search OSM data by name and address. | No strict limits | None | Free | [Nominatim Docs](https://nominatim.org/release-docs/develop/api/Search/) |
| FreeGeoIP | Geolocate an IP address. | 15,000 requests per hour | None | Free | [FreeGeoIP Docs](https://freegeoip.app/) |
| SmartyStreets | Address validation and geocoding. | 250 requests per month | API Key | Free with limited usage | [SmartyStreets Docs](https://smartystreets.com/docs) |
| Ambee | Environmental data APIs including weather and air quality. | 1000 requests per day | API Key | Free with limited usage | [Ambee Docs](https://www.getambee.com/api) |
## Search APIs 🔍📑🕵️
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|------------------------|---------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| Google Custom Search | Custom search engine for websites and applications. | 100 queries per day | API Key | Free with limited usage | [Google Custom Search Docs](https://developers.google.com/custom-search/v1/overview) |
| Bing Web Search API | Search the web for relevant information. | 3 requests per second | API Key | Free with limited usage | [Bing Web Search Docs](https://www.microsoft.com/en-us/bing/apis/bing-web-search-api-v7) |
| DuckDuckGo Instant Answer API | Provides instant answers to search queries. | No strict limits | None | Free | [DuckDuckGo Docs](https://duckduckgo.com/api) |
| ContextualWeb Search | Web search engine for various types of content. | 10,000 requests per month | API Key | Free with limited usage | [ContextualWeb Docs](https://rapidapi.com/contextualwebsearch/api/websearch) |
| Serpstack | Real-time search engine results from Google. | 100 searches per month | API Key | Free with limited usage | [Serpstack Docs](https://serpstack.com/documentation) |
| Algolia | Search and discovery API for dynamic experiences. | 10,000 operations per month | API Key | Free with limited usage | [Algolia Docs](https://www.algolia.com/doc/) |
| MeiliSearch | Fast and relevant search engine for various data. | No strict limits | None | Free | [MeiliSearch Docs](https://docs.meilisearch.com/)|
| Elasticsearch | Real-time distributed search and analytics engine. | No strict limits for open source | None | Free | [Elasticsearch Docs](https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html) |
| Searchly | Managed Elasticsearch service. | 5,000 documents, 50MB storage | API Key | Free with limited usage | [Searchly Docs](https://searchly.com/documentation) |
| Giphy API | Search and retrieve GIFs. | No strict limits | API Key | Free | [Giphy Docs](https://developers.giphy.com/docs/) |
| News API | Fetch news articles from various sources. | 500 requests per day | API Key | Free with limited usage | [News API Docs](https://newsapi.org/docs) |
| Pexels API | Search for free stock photos and videos. | 200 requests per hour | API Key | Free with limited usage | [Pexels Docs](https://www.pexels.com/api/documentation/) |
| Unsplash API | Access high-quality photos for searches. | 50 requests per hour | API Key | Free with limited usage | [Unsplash Docs](https://unsplash.com/documentation) |
| GitHub Search API | Search for repositories, issues, and users on GitHub. | 30 requests per minute | API Key | Free with limited usage | [GitHub Docs](https://docs.github.com/en/rest/search) |
| OMDB API | Search for movie data. | 1,000 requests per day | API Key | Free with limited usage | [OMDB Docs](https://www.omdbapi.com/) |
## Machine Learning APIs 🤖🧠🔮
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|------------------------|---------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| TensorFlow Serving | Serving machine learning models in production. | No strict limits | None | Free | [TensorFlow Serving Docs](https://www.tensorflow.org/tfx/guide/serving) |
| Hugging Face Transformers | Natural language processing and machine learning models. | No strict limits | None | Free | [Hugging Face Docs](https://huggingface.co/transformers/) |
| IBM Watson | Various AI and machine learning services. | 1,000 API calls per month | API Key | Free with limited usage | [IBM Watson Docs](https://cloud.ibm.com/apidocs) |
| OpenAI GPT-3 | Natural language processing and generation. | Limited free tier (varies) | API Key | Free with limited usage | [OpenAI Docs](https://beta.openai.com/docs/) |
| Google Cloud AI | Machine learning and AI services from Google Cloud. | Limited free tier (varies) | API Key | Free with limited usage | [Google Cloud AI Docs](https://cloud.google.com/products/ai) |
| Microsoft Azure AI | Various AI and machine learning services. | Limited free tier (varies) | API Key | Free with limited usage | [Azure AI Docs](https://azure.microsoft.com/en-us/services/machine-learning/) |
| Clarifai | Image and video recognition and analysis. | 5,000 operations per month | API Key | Free with limited usage | [Clarifai Docs](https://docs.clarifai.com/) |
| Algorithmia | Deploying and managing machine learning models. | 10,000 API calls per month | API Key | Free with limited usage | [Algorithmia Docs](https://algorithmia.com/developers) |
| Wit.ai | Natural language for speech and text processing. | No strict limits | API Key | Free | [Wit.ai Docs](https://wit.ai/docs) |
| Dialogflow | Natural language understanding for building chatbots. | 180 API calls per minute | API Key | Free with limited usage | [Dialogflow Docs](https://cloud.google.com/dialogflow/docs) |
| DeepAI | Various AI models for image and text processing. | No strict limits | API Key | Free | [DeepAI Docs](https://deepai.org/) |
| MonkeyLearn | Text analysis with machine learning. | 300 queries per month | API Key | Free with limited usage | [MonkeyLearn Docs](https://monkeylearn.com/api/) |
| BigML | Machine learning model creation and deployment. | 16 MB dataset size limit | API Key | Free with limited usage | [BigML Docs](https://bigml.com/api/) |
| RapidAPI Machine Learning APIs | A collection of various machine learning APIs. | Varies by API | API Key | Free with limited usage | [RapidAPI Machine Learning Docs](https://rapidapi.com/collection/machine-learning-apis) |
| Inferdo | Image recognition and classification. | 5,000 API calls per month | API Key | Free with limited usage | [Inferdo Docs](https://inferdo.com/) |
## Screenshot and Picture APIs 📷🌐🖼️
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|----------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| ScreenshotAPI.net | Capture website screenshots. | 100 requests per month | API Key | Free with limited usage | [ScreenshotAPI.net Docs](https://screenshotapi.net/documentation) |
| URL2PNG | Website screenshots in various sizes and formats. | 100 requests per month | API Key | Free with limited usage | [URL2PNG Docs](https://www.url2png.com/docs/) |
| ApiFlash | Capture high-quality screenshots of web pages. | 100 requests per month | API Key | Free with limited usage | [ApiFlash Docs](https://apiflash.com/documentation) |
| Thumbnail.ws | Generate website thumbnails. | 500 requests per month | API Key | Free with limited usage | [Thumbnail.ws Docs](https://www.thumbnail.ws/api) |
| Microlink | Convert links to rich media (screenshots, data, etc.).| 1,000 requests per month | API Key | Free with limited usage | [Microlink Docs](https://docs.microlink.io/api/getting-started/overview) |
| ScreenshotLayer | Capture website screenshots. | 100 requests per month | API Key | Free with limited usage | [ScreenshotLayer Docs](https://screenshotlayer.com/documentation) |
| Browshot | Real-time website screenshots. | 100 requests per month | API Key | Free with limited usage | [Browshot Docs](https://browshot.com/docs/api) |
| Page2Images | Website thumbnail generator. | 100 requests per month | API Key | Free with limited usage | [Page2Images Docs](https://www.page2images.com/doc) |
| URLbox | Website screenshots and PDFs. | 100 requests per month | API Key | Free with limited usage | [URLbox Docs](https://urlbox.io/documentation) |
| WebShrink.io | Capture website screenshots and metadata. | 1,000 requests per month | API Key | Free with limited usage | [WebShrink.io Docs](https://webshrinker.com/documentation/) |
| Capture by Techulus | Screenshot and PDF API. | 200 requests per month | API Key | Free with limited usage | [Techulus Docs](https://techulus.com/capture/docs) |
| ShotStack | Video and image editing API. | 500 render minutes per month | API Key | Free with limited usage | [ShotStack Docs](https://shotstack.io/docs) |
| Restpack Screenshot | Full page or viewport screenshots of web pages. | 100 requests per month | API Key | Free with limited usage | [Restpack Docs](https://restpack.io/screenshot-api/docs) |
| Placid | Generate custom images from templates. | 100 images per month | API Key | Free with limited usage | [Placid Docs](https://placid.app/docs/api) |
| Carbon.now.sh API | Create beautiful images of your source code. | No strict limits | None | Free | [Carbon.now.sh Docs](https://github.com/carbon-app/carbon) |
### URL Shortening APIs
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|----------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| Bitly | Shorten, share, and track links. | 50 requests per month | API Key | Free with limited usage | [Bitly Docs](https://dev.bitly.com/docs/getting-started/authentication/) |
| TinyURL | Simple URL shortening service. | No strict limits | None | Free | [TinyURL Docs](https://tinyurl.com/api-create.php) |
| Rebrandly | Custom URL shortener with link management. | 5,000 requests per month | API Key | Free with limited usage | [Rebrandly Docs](https://developers.rebrandly.com/docs) |
| is.gd | Simple URL shortening service. | No strict limits | None | Free | [is.gd Docs](https://is.gd/developer_api_info.php) |
| T2M | URL shortening service with tracking. | 100 requests per month | API Key | Free with limited usage | [T2M Docs](https://t2mio.com/api-docs) |
| Cutt.ly | Custom URL shortener with link management. | 1,000 requests per month | API Key | Free with limited usage | [Cutt.ly Docs](https://cutt.ly/cuttly-api) |
| Short.io | Branded URL shortener with link management. | 1,000 requests per month | API Key | Free with limited usage | [Short.io Docs](https://short.io/api) |
| Shrtco.de | Simple URL shortening service. | No strict limits | None | Free | [Shrtco.de Docs](https://shrtco.de/docs/) |
| ClickMeter | URL shortening with tracking and analytics. | 1,000 requests per month | API Key | Free with limited usage | [ClickMeter Docs](https://support.clickmeter.com/hc/en-us/articles/360006566993-REST-API) |
| v.gd | Simple URL shortening service. | No strict limits | None | Free | [v.gd Docs](https://v.gd/developer_api_info.php) |
| bl.ink | URL shortening and link management service. | 1,000 requests per month | API Key | Free with limited usage | [bl.ink Docs](https://help.bl.ink/docs/api) |
| Branch.io | URL shortening and deep linking. | 5,000 requests per month | API Key | Free with limited usage | [Branch.io Docs](https://docs.branch.io/reference) |
| Polr API | Open-source URL shortener service. | No strict limits | API Key | Free | [Polr Docs](https://docs.polrproject.org/en/latest/api/) |
| short.cm | Branded URL shortener with analytics. | 1,000 requests per month | API Key | Free with limited usage | [short.cm Docs](https://shortcm.io/api) |
| Tiny.cc | URL shortener with analytics. | 500 requests per month | API Key | Free with limited usage | [Tiny.cc Docs](https://tiny.cc/api-docs) |
### Social Media APIs
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|----------------------|--------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| Twitter API | Access tweets, user profiles, and analytics. | 500,000 tweets per month | API Key | Free with limited usage | [Twitter API Docs](https://developer.twitter.com/en/docs) |
| Facebook Graph API | Access to Facebook social graph and user data. | Rate limits apply | API Key | Free with limited usage | [Facebook Graph API Docs](https://developers.facebook.com/docs/graph-api) |
| Instagram Basic Display API | Access basic profile information and media. | 200 requests per hour | API Key | Free with limited usage | [Instagram Basic Display API Docs](https://developers.facebook.com/docs/instagram-basic-display-api) |
| LinkedIn API | Access to LinkedIn user data and professional network. | Rate limits apply | API Key | Free with limited usage | [LinkedIn API Docs](https://docs.microsoft.com/en-us/linkedin/shared/integrations/people/profile-api) |
| Reddit API | Access to Reddit posts, comments, and user data. | 60 requests per minute | API Key | Free with limited usage | [Reddit API Docs](https://www.reddit.com/dev/api/) |
| YouTube Data API | Access YouTube video and channel data. | 10,000 units per day | API Key | Free with limited usage | [YouTube Data API Docs](https://developers.google.com/youtube/v3) |
| TikTok API | Access TikTok video data and analytics. | Rate limits apply | API Key | Free with limited usage | [TikTok API Docs](https://developers.tiktok.com/doc/login-kit-web) |
| Pinterest API | Access Pinterest boards, pins, and user data. | Rate limits apply | API Key | Free with limited usage | [Pinterest API Docs](https://developers.pinterest.com/docs/getting-started/introduction/) |
| Tumblr API | Access to Tumblr blog posts and user data. | 1,000 requests per hour | API Key | Free with limited usage | [Tumblr API Docs](https://www.tumblr.com/docs/en/api/v2) |
| Snapchat Marketing API | Access Snapchat ad campaigns and analytics. | Rate limits apply | API Key | Free with limited usage | [Snapchat Marketing API Docs](https://marketingapi.snapchat.com/docs/) |
| VK API | Access VKontakte social network data. | Rate limits apply | API Key | Free with limited usage | [VK API Docs](https://vk.com/dev/manuals) |
| Slack API | Access Slack workspace data and messaging. | Rate limits apply | API Key | Free with limited usage | [Slack API Docs](https://api.slack.com/) |
| Discord API | Access Discord server data and messaging. | Rate limits apply | API Key | Free with limited usage | [Discord API Docs](https://discord.com/developers/docs/intro) |
| Mastodon API | Access Mastodon social network data. | Rate limits apply | API Key | Free with limited usage | [Mastodon API Docs](https://docs.joinmastodon.org/api/) |
| Meetup API | Access Meetup group and event data. | Rate limits apply | API Key | Free with limited usage | [Meetup API Docs](https://www.meetup.com/meetup_api/) |
### SEO APIs 🔍📈💡
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|--------------------------|---------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| Google Search Console API | Access search analytics, sitemap, and URL crawl errors data. | 100 requests per second | OAuth 2.0 | Free | [Google Search Console Docs](https://developers.google.com/webmaster-tools/search-console-api-original/v3/) |
| Ahrefs API | SEO tools for backlink, keyword, and competitive analysis. | 500 rows per month | API Key | Free with limited usage | [Ahrefs API Docs](https://ahrefs.com/api/documentation/) |
| SEMrush API | Online visibility and marketing analytics. | Varies, up to 10,000 requests/day | API Key | Free with limited usage | [SEMrush API Docs](https://www.semrush.com/api-analytics/) |
| Moz API | SEO tools for link building, keyword research, and site audits. | 120 requests per minute | API Key | Free with limited usage | [Moz API Docs](https://moz.com/products/api) |
| SERPstat API | SEO tools for rank tracking, keyword research, and competitor analysis. | 10,000 requests per day | API Key | Free with limited usage | [SERPstat API Docs](https://serpstat.com/api/) |
| Majestic API | Backlink and site explorer tools. | Varies by endpoint | API Key | Free with limited usage | [Majestic API Docs](https://developer.majestic.com/api) |
| SE Ranking API | All-in-one SEO tools for rank tracking and website audit. | 100 requests per minute | API Key | Free with limited usage | [SE Ranking API Docs](https://seranking.com/api.html) |
| SpyFu API | SEO tools for keyword research, competitor analysis, and domain insights. | 1,000 requests per month | API Key | Free with limited usage | [SpyFu API Docs](https://www.spyfu.com/solutions/api) |
| Rank Math API | SEO tools for WordPress websites including keyword tracking and site audits. | No strict limits | API Key | Free | [Rank Math API Docs](https://rankmath.com/kb/analytics-api/) |
| BrightLocal API | Local SEO tools for rank tracking, citation management, and reviews. | Varies by endpoint | API Key | Free with limited usage | [BrightLocal API Docs](https://www.brightlocal.com/api/) |
| SerpWow API | Real-time search engine result pages (SERP) data. | 5,000 requests per month | API Key | Free with limited usage | [SerpWow API Docs](https://serpwow.com/docs) |
| DataForSEO API | Comprehensive SEO tools for keyword and rank tracking. | Varies by endpoint | API Key | Free with limited usage | [DataForSEO API Docs](https://docs.dataforseo.com/) |
| SEOstack API | SERP data extraction and rank tracking tools. | 1,000 requests per month | API Key | Free with limited usage | [SEOstack API Docs](https://seostack.io/documentation) |
| Botify API | Website crawling and log analysis tools for SEO. | 10,000 requests per month | API Key | Free with limited usage | [Botify API Docs](https://docs.botify.com/) |
| Screaming Frog API | Website crawler for SEO audits. | Varies by usage | API Key | Free with limited usage | [Screaming Frog API Docs](https://www.screamingfrog.co.uk/seo-spider-api/) |
### Shopping APIs 🛍️🛒📦
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|--------------------------|---------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| Amazon Product Advertising API | Access product details, reviews, and prices from Amazon. | Varies by account | API Key | Free with limited usage | [Amazon Product Advertising API Docs](https://webservices.amazon.com/paapi5/documentation/) |
| eBay Shopping API | Retrieve eBay listings, item details, and seller information. | 5,000 calls per day | OAuth 2.0 | Free | [eBay Shopping API Docs](https://developer.ebay.com/api-docs/buy/static/api-shopping.html) |
| Walmart API | Access Walmart product data, pricing, and inventory. | Varies by endpoint | API Key | Free with limited usage | [Walmart API Docs](https://developer.walmart.com/) |
| Etsy API | Access Etsy marketplace data including listings, shops, and reviews. | 5,000 calls per day | OAuth 2.0 | Free with limited usage | [Etsy API Docs](https://developers.etsy.com/documentation/) |
| Shopify Admin API | Manage Shopify store data including products, orders, and customers. | 40 requests per minute | API Key | Free with limited usage | [Shopify Admin API Docs](https://shopify.dev/docs/admin-api) |
| BigCommerce API | Manage BigCommerce store data including products, orders, and customers. | 20 requests per second | API Key | Free with limited usage | [BigCommerce API Docs](https://developer.bigcommerce.com/api-reference) |
| Best Buy API | Access Best Buy product data, pricing, and availability. | 5,000 requests per day | API Key | Free with limited usage | [Best Buy API Docs](https://developer.bestbuy.com/) |
| AliExpress API | Access AliExpress product details, pricing, and reviews. | Varies by account | API Key | Free with limited usage | [AliExpress API Docs](https://developers.aliexpress.com/en/doc.htm) |
| WooCommerce REST API | Manage WooCommerce store data including products, orders, and customers. | 1,000 requests per day | API Key | Free with limited usage | [WooCommerce REST API Docs](https://woocommerce.github.io/woocommerce-rest-api-docs/) |
| Rakuten Marketplace API | Access Rakuten product data, pricing, and availability. | Varies by account | API Key | Free with limited usage | [Rakuten Marketplace API Docs](https://developer.rakuten.com/) |
| Mercari API | Access Mercari marketplace data including listings and user profiles. | Varies by account | API Key | Free with limited usage | [Mercari API Docs](https://www.mercari.com/us/api-docs/) |
| Zalando API | Access Zalando product data and search functionality. | Varies by account | API Key | Free with limited usage | [Zalando API Docs](https://developers.zalando.com/) |
| Flipkart Affiliate API | Access Flipkart product data, prices, and deals. | 1,000 requests per day | API Key | Free with limited usage | [Flipkart Affiliate API Docs](https://affiliate.flipkart.com/api-docs) |
| Target API | Access Target product data, pricing, and availability. | Varies by account | API Key | Free with limited usage | [Target API Docs](https://developer.target.com/) |
| OpenCart API | Manage OpenCart store data including products, orders, and customers. | Varies by account | API Key | Free with limited usage | [OpenCart API Docs](https://opencart-documentation.readthedocs.io/en/latest/api/intro/) |
### Developer APIs 💻🔧🛠️
| **API Name** | **Description** | **Usage Limits** | **Authentication** | **Free** | **Documentation** |
|--------------------------|---------------------------------------------------------|-------------------------------|--------------------|-----------------------------|--------------------------------------------------|
| GitHub API | Access repositories, issues, and pull requests on GitHub. | 5,000 requests per hour | OAuth 2.0 / API Key| Free | [GitHub API Docs](https://docs.github.com/en/rest) |
| GitLab API | Access repositories, issues, and merge requests on GitLab. | 10 requests per second | OAuth 2.0 / API Key| Free | [GitLab API Docs](https://docs.gitlab.com/ee/api/) |
| Bitbucket API | Access repositories, issues, and pull requests on Bitbucket. | 1,000 requests per hour | OAuth 2.0 / API Key| Free | [Bitbucket API Docs](https://developer.atlassian.com/bitbucket/api/2/reference/) |
| Stack Exchange API | Access questions, answers, and user data on Stack Overflow. | 300 requests per day | API Key | Free | [Stack Exchange API Docs](https://api.stackexchange.com/docs) |
| Atlassian JIRA API | Manage JIRA projects, issues, and workflows. | 1,000 requests per day | OAuth 2.0 / API Key| Free with limited usage | [JIRA API Docs](https://developer.atlassian.com/cloud/jira/platform/rest/v3/intro/) |
| Trello API | Manage Trello boards, lists, and cards. | 300 requests per 10 seconds | OAuth 1.0 / API Key| Free | [Trello API Docs](https://developer.atlassian.com/cloud/trello/rest/api-group-actions/) |
| Asana API | Manage tasks, projects, and workspaces in Asana. | 150 requests per minute | OAuth 2.0 / API Key| Free | [Asana API Docs](https://developers.asana.com/docs) |
| Slack API | Integrate with Slack to send messages and manage channels. | Varies by method | OAuth 2.0 / API Key| Free with limited usage | [Slack API Docs](https://api.slack.com/) |
| Twilio API | Send SMS, make calls, and manage communication workflows. | Varies by account | API Key | Free with limited usage | [Twilio API Docs](https://www.twilio.com/docs/usage/api) |
| SendGrid API | Send emails and manage email marketing campaigns. | 40,000 requests per day | API Key | Free with limited usage | [SendGrid API Docs](https://sendgrid.com/docs/API_Reference/index.html) |
| Mailgun API | Send, receive, and track emails using Mailgun. | 5,000 emails per month | API Key | Free with limited usage | [Mailgun API Docs](https://documentation.mailgun.com/en/latest/api-intro.html) |
| Firebase API | Access Firebase services including Firestore, Auth, and Realtime Database. | Varies by service | API Key / OAuth 2.0| Free with limited usage | [Firebase API Docs](https://firebase.google.com/docs/reference/rest/) |
| Heroku API | Manage Heroku apps and resources programmatically. | Varies by endpoint | OAuth 2.0 / API Key| Free | [Heroku API Docs](https://devcenter.heroku.com/articles/platform-api-reference) |
| Azure DevOps API | Access Azure DevOps services including Pipelines, Repos, and Boards. | 60 requests per minute | OAuth 2.0 / API Key| Free | [Azure DevOps API Docs](https://learn.microsoft.com/en-us/rest/api/azure/devops/) |
| Jenkins API | Manage Jenkins jobs, builds, and nodes. | No strict limits | API Key | Free | [Jenkins API Docs](https://www.jenkins.io/doc/book/using/remote-access-api/) |
| Netlify API | Manage Netlify sites, builds, and deployments. | 2,000 requests per hour | OAuth 2.0 / API Key| Free | [Netlify API Docs](https://open-api.netlify.com/) |
| DigitalOcean API | Manage DigitalOcean droplets, domains, and resources. | 5,000 requests per hour | OAuth 2.0 / API Key| Free | [DigitalOcean API Docs](https://docs.digitalocean.com/reference/api/api-reference/) |
| AWS SDK | Access AWS services including EC2, S3, and RDS programmatically. | Varies by service | API Key | Free with limited usage | [AWS SDK Docs](https://aws.amazon.com/documentation/sdk/) |
| Google Cloud API | Access Google Cloud services including Compute Engine, Cloud Storage, and BigQuery. | Varies by service | API Key / OAuth 2.0| Free with limited usage | [Google Cloud API Docs](https://cloud.google.com/apis) |
| Microsoft Graph API | Access Microsoft 365 services including Outlook, OneDrive, and Teams. | 10,000 requests per 10 minutes | OAuth 2.0 | Free | [Microsoft Graph API Docs](https://learn.microsoft.com/en-us/graph/api/overview?view=graph-rest-1.0) |
---
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1,870,674 | Light House vs Web Vitals: Which score is real? | Understand the differences between Google Lighthouse and Web Vitals scores and why they might... | 0 | 2024-05-30T18:22:41 | https://10xdev.codeparrot.ai/light-house-vs-web-vitals | webdev, lighthouse, webvitals, performance | > Understand the differences between Google Lighthouse and Web Vitals scores and why they might differ.
## What is Google Lighthouse?
Google Lighthouse is an open-source, automated tool for improving the quality of web pages. It provides audits for performance, accessibility, SEO, and more. You can run Lighthouse in Chrome DevTools, from the command line, or as a Node module.
### How to Run Lighthouse
1. Open Chrome DevTools (F12 or right-click on the page and select "Inspect").
2. Click on the “Lighthouse” tab.
3. Select the categories you want to audit (Performance, Accessibility, Best Practices, SEO, PWA).
4. Click “Generate report”.
Here’s an example of a Lighthouse report for codeparrot.ai:
## Overview of a Lighthouse Report
- **Performance:** 91
- **Accessibility:** 95
- **Best Practices:** 78
- **SEO:** 100
- **PWA:** Not available (PWA score is not provided)
### Performance (91)
- **First Contentful Paint (FCP):** 2.1 seconds
- This is the time it takes for the first piece of content to be painted on the screen.
- **Largest Contentful Paint (LCP):** 2.9 seconds
- This measures how long it takes for the largest content element to be painted.
- **Total Blocking Time (TBT):** 100 milliseconds
- The total time the main thread is blocked, preventing user input responsiveness.
- **Cumulative Layout Shift (CLS):** 0.003
- This measures the visual stability of the page and how often unexpected layout shifts occur.
### Accessibility (95)
This score evaluates how accessible your website content is, especially for users with disabilities. It involves aspects like color contrast, ARIA roles, and screen reader support.
### Best Practices (78)
This score reflects adherence to modern web development best practices, such as avoiding deprecated APIs, using HTTPS, ensuring secure resource loading, and reducing JavaScript execution time.
### SEO (100)
A perfect SEO score indicates excellent adherence to search engine optimization best practices, including the proper use of meta tags, descriptive link text, and ensuring pages are crawlable.
## What are Web Vitals?
Web Vitals is a set of metrics introduced by Google to help quantify the user experience on a web page. These metrics focus on three main aspects:
1. **Loading** (Largest Contentful Paint - LCP)
2. **Interactivity** (First Input Delay - FID)
3. **Visual Stability** (Cumulative Layout Shift - CLS)
### How to Measure Web Vitals
To measure Web Vitals, simply enter your website URL into Google PageSpeed Insights, and you’ll get a detailed report. Here’s an example report for codeparrot.ai:
### Analyzing PageSpeed Insights Report
#### Performance Metrics Breakdown
1. **First Contentful Paint (FCP): 1.0 s**
- FCP measures the time it takes for the first piece of content to be rendered on the screen.
- **Status:** Good. This is within the recommended time frame of under 1.8 seconds.
2. **Largest Contentful Paint (LCP): 1.3 s**
- LCP measures the time it takes for the largest content element visible in the viewport to be rendered.
- **Status:** Good. This is within the recommended time frame of under 2.5 seconds.
3. **Total Blocking Time (TBT): 810 ms**
- TBT measures the total time that the main thread is blocked, preventing user input.
- **Status:** Needs Improvement. The recommended TBT is under 200 milliseconds.
4. **Speed Index: 4.1 s**
- Speed Index shows how quickly the contents of a page are visibly populated.
- **Status:** Needs Improvement. The recommended Speed Index is under 3 seconds.
5. **Cumulative Layout Shift (CLS): 0.028**
- CLS measures the visual stability of the page, indicating how much the page layout shifts unexpectedly.
- **Status:** Excellent. This is well within the recommended threshold of under 0.1.
## Differences Between Lighthouse and Web Vitals
### Results Comparison
In the Lighthouse report, the performance score was 91, whereas the PageSpeed Insights report showed a performance score of 59. Why the big difference? It comes down to the environments and specific metrics each tool prioritizes.
### Why Lower Score in Web Vitals?
The lower score in Web Vitals can be attributed to higher Total Blocking Time (TBT) in the PageSpeed Insights report. This suggests that while the initial loading times (FCP and LCP) are good, the page struggles with interactivity and responsiveness—possibly due to heavy JavaScript execution or blocking resources.
### Scope and Purpose
**Lighthouse:**
- **Comprehensive Audits:** It covers performance, accessibility, best practices, SEO, and Progressive Web App (PWA) features.
- **Developer Tool:** Designed to provide detailed insights into various aspects of a website, beyond just performance.
**Web Vitals:**
- **Focused Metrics:** Specifically targets key user experience metrics that have a strong correlation with the overall user experience.
- **User-Centric:** Aims to quantify and improve the user experience by focusing on loading speed, interactivity, and visual stability.
### Key Metrics
**Lighthouse Metrics:**
- Performance Metrics: FCP, LCP, Speed Index, TBT, CLS.
- Accessibility Metrics: Checks for color contrast, ARIA roles, screen reader support.
- Best Practices: Assesses deprecated APIs, secure resource loading, optimized JavaScript.
- SEO: Evaluates meta tags, descriptive link text, crawlability.
- PWA: Checks for features like offline support, service workers, manifest files.
**Web Vitals Metrics:**
- Largest Contentful Paint (LCP): Measures loading performance.
- First Input Delay (FID): Measures interactivity.
- Cumulative Layout Shift (CLS): Measures visual stability.
### Usage Scenarios
**Lighthouse:**
- **Development and Testing:** Ideal for developers needing comprehensive audits of their website’s performance and quality.
- **Continuous Integration:** Can be integrated into CI/CD pipelines to ensure code changes don’t degrade the website’s performance or quality.
- **Broader Analysis:** Useful for a wide range of checks beyond performance, such as accessibility and SEO.
**Web Vitals:**
- **User Experience Optimization:** Best for monitoring and optimizing core user experience aspects—loading speed, interactivity, and visual stability.
- **Real-World Data:** Often used with field data from tools like Google’s Chrome User Experience Report (CrUX) and real user monitoring (RUM) tools.
- **Simplified Metrics:** Provides clear, focused metrics that are easy to understand and prioritize.
### Data Collection
**Lighthouse:**
- **Lab Data:** Simulates page loads in a controlled environment, providing consistent, repeatable metrics. Useful for debugging and pre-live testing.
- **Controlled Conditions:** Results may differ from real-world user experiences, especially if there are significant differences in network conditions and device capabilities.
**Web Vitals:**
- **Field Data:** Relies on metrics captured from real user interactions, providing an accurate picture of how users experience the site.
- **Variability:** Reflects real-world conditions, which can vary based on user devices, network speeds, and other factors.
## Conclusion
Both Lighthouse and Web Vitals are essential for web performance optimization, but they serve different purposes. Lighthouse offers a comprehensive audit tool covering multiple aspects of web development, while Web Vitals focuses on the core metrics that matter most to user experience. By leveraging both tools, you can ensure your website is both high-performing and user-friendly, meeting the needs of search engines and end-users alike.
| mvaja13 |
1,870,673 | Photo Booth Rental Dubai | In the vibrant and cosmopolitan city of Dubai, events are not just gatherings; they are spectacular... | 0 | 2024-05-30T18:21:43 | https://dev.to/seo_digitalarab_01ee2735/photo-booth-rental-dubai-4o1g | In the vibrant and cosmopolitan city of Dubai, events are not just gatherings; they are spectacular experiences filled with glitz, glamour, and unforgettable moments. Whether it's a wedding, corporate event, birthday party, or a grand celebration, every detail matters to create an extraordinary experience. At Colourfulevent, we understand the importance of capturing these moments in a fun and engaging way. That's why we offer top-notch photo booth rental services designed to elevate your event and create lasting memories.
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At Colourfulevent, we pride ourselves on delivering the highest quality service. [Photo Booth Rental Dubai](https://colorfulevents.me/photo-booth-rental-dubai/) are equipped with state-of-the-art technology, ensuring that every photo is crisp, clear, and vibrant. Our team of professional attendants is dedicated to providing a seamless and enjoyable experience for all your guests. From set-up to tear-down, we handle everything with precision and care, allowing you to focus on enjoying your event.
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How Colourfulevent Photo Booths Can Transform Your Event
Weddings
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**Corporate Events**
Impress your clients, partners, and employees with a photo booth that adds a touch of fun and sophistication to your corporate events. Our branded photo booths can be customized with your company logo and event theme, providing a memorable experience that enhances your brand’s image. From product launches to holiday parties, our photo booths are a hit at any corporate gathering.
**Birthday Parties**
Make your birthday celebration unforgettable with a [Colourfulevent](https://colorfulevents.me/photo-booth-rental-dubai/) photo booth. Our booths provide endless entertainment for guests of all ages, creating a fun and lively atmosphere. With customized props and backdrops, your birthday photos will be as unique and special as the celebration itself.
**Festivals and Community Events**
Enhance your festival or community event with a photo booth that brings people together. Our interactive booths encourage guests to mingle, have fun, and create lasting memories. Whether it’s a cultural festival, charity event, or community fair, our photo booths add a touch of excitement and joy.
**Conclusion**
At Colourfulevent, we believe that every event is a canvas waiting to be filled with colorful memories. Our photo booth rental services in Dubai are designed to add fun, creativity, and a touch of magic to your special occasions. With our commitment to quality, customization, and exceptional service, we ensure that your event is not just another gathering but a spectacular celebration. Choose Colourfulevent for your next event and let us help you create memories that will last a lifetime. | seo_digitalarab_01ee2735 | |
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1,870,671 | Top 10 Analytics Salesforce Apps | Introduction: Enhancing Salesforce with Advanced Analytics Salesforce brings together CRM,... | 0 | 2024-05-30T18:24:29 | https://www.sfapps.info/top-10-analytics-salesforce-apps/ | appreviews, blog | ---
title: Top 10 Analytics Salesforce Apps
published: true
date: 2024-05-30 18:15:19 UTC
tags: AppReviews,Blog
canonical_url: https://www.sfapps.info/top-10-analytics-salesforce-apps/
---
## Introduction: Enhancing Salesforce with Advanced Analytics
[Salesforce](https://www.salesforce.com/eu/) brings together CRM, AI, data, and trust on one integrated platform to help companies connect with their customers in a whole new way. To truly harness the power of Salesforce, integrating specialized [analytics apps Salesforce](https://www.sfapps.info/overview-of-analytics-apps/) is essential. These tools can transform raw data into actionable insights, enabling businesses to make data-driven decisions and optimize their operations.
In this article, we will explore the Top 10 Analytics Salesforce apps available on the Analytics [AppExchange](https://appexchange.salesforce.com/). These analytics Salesforce solutions are designed to integrate seamlessly with Salesforce, offering a range of functionalities from data visualization to predictive analytics. By incorporating these apps, businesses can enhance their data management, [enable CRM analytics Salesforce](https://www.sfapps.info/how-to-enable-crm-analytics-in-salesforce/), gain deeper insights, and ultimately drive better performance.
Whether you are looking for Salesforce analytics tools to streamline your operations or Salesforce data analytics tools to gain a competitive edge, this comprehensive guide will help you identify the best apps to meet your needs. From real-time dashboards to advanced reporting features, each app brings unique capabilities to the table, ensuring that your Salesforce environment is equipped with the latest and most effective analytics tools.
- [#1 XL-Connector by Xappex LLC](#aioseo-1-xl-connector-by-xappex-llc)
- [#2 AscendixRE CRM for Commercial Real Estate & Capital Markets by Ascendix Technologies](#aioseo-2-ascendixre-crm-for-commercial-real-estate-capital-markets-by-ascendix-technologies)
- [#3 AddressTools Premium: Address Verification & Standardization by ProvenWorks](#aioseo-3-addresstools-premium-address-verification-standardization-by-provenworks)
- [#4 Duplicate Management by AI | Find and Merge Duplicates by DataGroomr, LLC](#aioseo-4-duplicate-management-by-ai-find-and-merge-duplicates-by-datagroomr-llc)
- [#5 Coefficient: Google Sheets Salesforce Integration by Coefficient](#aioseo-5-coefficient-google-sheets-salesforce-integration-by-coefficient)
- [#6 InsightSquared for Salesforce.com by InsightSquared](#aioseo-6-insightsquared-for-salesforce-com-by-insightsquared)
- [#7 Field Tracker App by Algoworks | 100% Native by Algoworks Solutions Inc](#aioseo-7-field-tracker-app-by-algoworks-100-native-by-algoworks-solutions-inc)
- [#8 Gecko HRM – all the tools your HR needs by Agilcon d.o.o.](#aioseo-8-gecko-hrm-all-the-tools-your-hr-needs-by-agilcon-d-o-o)
- [#9 Address Verification from To A Finish by To A Finish LLC](#aioseo-9-address-verification-from-to-a-finish-by-to-a-finish-llc)
- [#10 ISVapp App Analytics by ISVapp](#aioseo-10-isvapp-app-analytics-by-isvapp)
- [Wrapping Up: Maximizing Salesforce with Advanced Analytics Tools](#aioseo-wrapping-up-maximizing-salesforce-with-advanced-analytics-tools)
Stay tuned as we delve into each of these top 10 analytics Salesforce apps, detailing their key features, benefits, and how they can empower your team to achieve more.
## #1 XL-Connector by Xappex LLC
**Overview: **
XL-Connector by Xappex LLC is a powerful analytics Salesforce tool that bridges the gap between Excel and Salesforce. This app enables seamless data integration and management, providing a familiar interface for users to work with Salesforce data directly within Excel. XL-Connector is particularly useful for data analysis, reporting, and data migration tasks, making it a vital tool for any business looking to enhance their Salesforce experience with advanced data manipulation capabilities.
**Key Features:**
**Data Integration:**
- **Bidirectional Sync:** Easily sync data between Salesforce and Excel, allowing users to pull data from Salesforce and push updates back to Salesforce without leaving Excel. This ensures that data is always current and accurate, which is crucial for maintaining high data quality standards.
- **Automated Refresh:** Schedule refresh of your data to keep your Excel sheets up-to-date with the latest Salesforce data. This feature is particularly beneficial for businesses that require real-time data updates for operational efficiency.
- **Support for Large Data Sets:** Handle large volumes of data efficiently, making it suitable for extensive data analysis. This capability is ideal for organizations that deal with massive amounts of data and need a reliable tool to process and analyze this information.
**Data Management:**
- **Data Filtering:** Use Excel’s powerful filtering capabilities to manage and analyze Salesforce data effectively. This feature allows users to sort through vast amounts of data to find specific information quickly.
- **Data Transformation:** Transform and manipulate data using Excel’s functions before syncing it back to Salesforce. This feature is particularly useful for businesses that need to format or cleanse data before it is re-imported into Salesforce.
- **Custom Reports:** Create custom reports and dashboards in Excel based on Salesforce data, tailored to specific business needs. This allows users to generate detailed insights and visualizations that can aid in decision-making processes.
**User-Friendly Interface:**
- **Excel Add-In:** Seamlessly integrates as an add-in within Excel, providing a familiar and intuitive user experience. Users do not need to learn a new interface, making it easier to adopt and utilize the tool effectively.
- **Easy Setup:** Quick and easy setup process, enabling users to start syncing data with minimal configuration. This reduces the time and effort required to get started, allowing businesses to benefit from the tool immediately.
**Enhanced Security:**
- **Secure Data Transfers:** Ensure secure data transfers between Salesforce and Excel with robust encryption protocols. This feature is essential for businesses that handle sensitive data and need to ensure that their information is protected.
- **User Permissions:** Control access to Salesforce data based on user roles and permissions, ensuring data security and compliance. This feature helps in maintaining data integrity and preventing unauthorized access to critical information.
**Benefits for Sales Teams:**
- **Improved Data Analysis:** Leverage Excel’s advanced data analysis tools to gain deeper insights from Salesforce data, which is essential for [professional services automation Salesforce](https://www.sfapps.info/salesforce-implementation-for-professional-services/). This capability allows sales teams to make more informed decisions based on accurate data insights.
- **Increased Efficiency:** Save time and reduce manual data entry with automated data syncing and transformation, making it easier to manage tasks like [Shopify Plus to Salesforce](https://www.sfapps.info/shopify-plus-to-salesforce-migration-guide/) integrations. Automation of data-related tasks frees up valuable time for sales teams to focus on strategic activities.
- **Customizable Reporting:** Create and customize reports in Excel to meet specific business requirements, enhancing decision-making processes. Custom reports provide sales teams with the precise information they need to track performance and identify opportunities for improvement.
**Pricing:** $99 USD/user/year
**Rating:** 4.84 (208+ reviews) ⭐⭐⭐⭐⭐
**Link:** [XL-Connector by Xappex LLC](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3000000B3GBzEAN)
Additionally, the tool’s ease of use and robust security features make it suitable for businesses of all sizes. Whether you are a small business looking to improve your data management practices or a large enterprise needing to handle massive data sets, XL-Connector offers the flexibility and functionality required to meet your needs.
## #2 AscendixRE CRM for Commercial Real Estate & Capital Markets by Ascendix Technologies
**Overview: **
AscendixRE CRM is a specialized analytics Salesforce tool designed specifically for the commercial real estate and capital markets sectors. Developed by Ascendix Technologies, this app offers comprehensive CRM capabilities integrated with powerful analytics tools to help real estate professionals manage their data, track market trends, and improve decision-making processes.
**Key Features:**
**Real Estate Data Management:**
- **Property Listings:** Manage property listings, including detailed property information, availability, and pricing.
- **Market Data Integration:** Integrate market data to track trends and analyze market conditions.
- **Lease and Sales Tracking:** Track leases and sales transactions with detailed records and analytics.
**Advanced Analytics:**
- **Customizable Dashboards:** Create customizable dashboards to visualize key metrics and performance indicators.
- **Reporting Tools:** Generate detailed reports on market trends, property performance, and financial metrics.
- **Predictive Analytics:** Utilize predictive analytics to forecast market trends and make informed investment decisions.
**Client Management:**
- **Contact Management:** Manage contacts, including clients, investors, and stakeholders, with detailed profiles and interaction history.
- **Deal Tracking:** Track deals from inception to closure, with comprehensive analytics on deal flow and outcomes.
- **Email Integration:** Integrate with email to streamline communication and track interactions.
**Workflow Automation:**
- **Task Management:** Automate task management with reminders and notifications to ensure timely follow-ups and actions.
- **Pipeline Management:** Manage deal pipelines with visual tools to track progress and identify bottlenecks.
- **Collaboration Tools:** Facilitate collaboration with team members through shared workspaces and document management.
**Benefits for Sales Teams:**
- **Enhanced Data Visibility:** Gain a comprehensive view of property data, market conditions, and client interactions, which is crucial for making informed decisions.
- **Improved Efficiency:** Automate routine tasks and streamline workflows to save time and increase productivity.
- **Better Decision-Making:** Leverage advanced analytics and predictive tools to make data-driven decisions and optimize investment strategies.
**Pricing:** $79 USD/user/month
**Rating:** 4.98 (80+ reviews) ⭐⭐⭐⭐⭐
**Link:** [AscendixRE CRM for Commercial Real Estate & Capital Markets](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3000000B5eloEAB)
Additionally, AscendixRE CRM is tailored specifically for the needs of commercial real estate professionals. By integrating advanced analytics and CRM functionalities, it provides a comprehensive solution for managing properties, tracking market trends, and improving client relationships. This app is ideal for real estate firms looking to enhance their data management practices and gain deeper insights into market dynamics.
## #3 AddressTools Premium: Address Verification & Standardization by ProvenWorks
**Overview: **
AddressTools Premium by ProvenWorks is a comprehensive address verification and standardization tool that integrates seamlessly with Salesforce. This app is designed to enhance data quality by ensuring that all address information within Salesforce is accurate and standardized. This is particularly valuable for organizations that rely on accurate address data for marketing, sales, and customer service operations.
**Key Features:**
**Address Verification:**
- **Global Coverage:** Verify addresses from over 240 countries and territories to ensure data accuracy on a global scale.
- **Real-Time Verification:** Validate addresses in real-time during data entry to prevent errors from being saved into the system.
**Standardization:**
- **Address Formatting:** Standardize addresses to a consistent format, improving data quality and consistency.
- **Bulk Processing:** Process large volumes of address data efficiently with batch verification and standardization.
**Data Enrichment:**
- **Geocoding:** Add latitude and longitude coordinates to address records for enhanced location-based insights.
- **Additional Data:** Append additional data such as postal codes and locality information to enrich address records.
**Integration and Automation:**
- **Seamless Salesforce Integration:** Integrates directly with Salesforce to provide address verification and standardization within the CRM environment.
- **Automation:** Automate address verification and standardization processes with workflow rules and triggers.
**Benefits for Sales Teams:**
- **Improved Data Quality:** Ensure that address data is accurate and up-to-date, reducing errors and improving the reliability of CRM data.
- **Enhanced Customer Engagement:** Utilize accurate address data for targeted marketing campaigns and efficient customer service operations.
- **Operational Efficiency:** Save time and resources by automating address verification and standardization processes.
**Pricing:** $2,100 USD/Org/year
**Rating:** 4.96 (73+ reviews) ⭐⭐⭐⭐⭐
**Link:** [AddressTools Premium: Address Verification & Standardization](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N30000002zt9uEAA)
**Additional Information:** AddressTools Premium is essential for organizations that prioritize data quality. By ensuring that all address data within Salesforce is accurate and standardized, businesses can improve their marketing, sales, and customer service operations. This app is particularly useful for companies that operate globally and need to manage large volumes of address data.
## #4 Duplicate Management by AI | Find and Merge Duplicates by DataGroomr, LLC
**Overview: **
Duplicate Management by AI from DataGroomr is an advanced tool for identifying and merging duplicate records within Salesforce. Utilizing artificial intelligence, this app automates the process of detecting and resolving duplicates, ensuring data integrity and improving CRM performance.
**Key Features:**
**AI-Powered Duplicate Detection:**
- **Machine Learning Algorithms:** Use advanced machine learning algorithms to identify duplicate records with high accuracy.
- **Real-Time Detection:** Detect duplicates in real-time during data entry to prevent duplication at the source.
**Merge and Cleanup:**
- **Automated Merging:** Automatically merge duplicate records based on predefined rules and criteria.
- **Manual Review:** Provide options for manual review and merging to ensure data accuracy and control.
**Comprehensive Reporting:**
- **Duplicate Reports:** Generate detailed reports on duplicate records, including detection accuracy and merging outcomes.
- **Analytics Dashboard:** Access a comprehensive dashboard to monitor duplicate management activities and trends.
**Seamless Integration:**
- **Salesforce Integration:** Integrates directly with Salesforce, providing a seamless user experience within the CRM environment.
- **Customizable Rules:** Customize duplicate detection and merging rules to fit specific business requirements.
**Benefits for Sales Teams:**
- **Improved Data Quality:** Maintain a clean and accurate CRM database by eliminating duplicate records.
- **Enhanced Efficiency:** Automate the detection and merging of duplicates to save time and resources.
- **Better Customer Insights:** Ensure that all customer data is consolidated and accurate, leading to improved customer insights and decision-making.
**Pricing:** $99 USD/company/year
**Rating:** 4.97 (65+ reviews) ⭐⭐⭐⭐⭐
**Link:** [Duplicate Management by AI | Find and Merge Duplicates](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000FMagqUAD)
**Additional Information:** Duplicate Management by AI is a crucial tool for maintaining data integrity within Salesforce. By leveraging artificial intelligence, this app automates the process of detecting and merging duplicates, ensuring that CRM data is accurate and reliable. This is particularly important for organizations that manage large volumes of customer data and need to maintain high data quality standards.
## #5 Coefficient: Google Sheets Salesforce Integration by Coefficient
**Overview: **
Coefficient provides a seamless integration between Google Sheets and Salesforce, allowing users to pull and push data between the two platforms effortlessly. This app is designed to enhance productivity by enabling users to leverage the analytical capabilities of Google Sheets while ensuring that Salesforce data remains up-to-date.
**Key Features:**
**Data Integration:**
- **Bidirectional Sync:** Synchronize data between Google Sheets and Salesforce, allowing users to update records on both platforms.
- **Real-Time Data Updates:** Ensure that data in Google Sheets is always current with real-time updates from Salesforce.
**Data Analysis and Reporting:**
- **Custom Reports:** Create custom reports in Google Sheets based on Salesforce data, tailored to specific business needs.
- **Advanced Formulas:** Utilize Google Sheets’ advanced formulas and functions to analyze Salesforce data.
**User-Friendly Interface:**
- **Google Sheets Add-On:** Seamlessly integrates as an add-on within Google Sheets, providing a familiar and intuitive user experience.
- **Easy Setup:** Quick and easy setup process, enabling users to start syncing data with minimal configuration.
**Automation and Workflows:**
- **Automated Workflows:** Automate data syncing and updates between Google Sheets and Salesforce with workflow rules.
- **Scheduled Updates:** Schedule regular data updates to ensure that Google Sheets is always in sync with Salesforce.
**Benefits for Sales Teams:**
- **Enhanced Data Analysis:** Leverage Google Sheets’ analytical capabilities to gain deeper insights from Salesforce data.
- **Increased Productivity:** Save time and reduce manual data entry with automated data syncing and updates.
- **Customizable Reporting:** Create and customize reports in Google Sheets to meet specific business requirements.
**Pricing:** Free
**Rating:** 4.95 (58+ reviews) ⭐⭐⭐⭐⭐
**Link:** [Coefficient: Google Sheets Salesforce Integration](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N4V00000GYgWXUA1)
**Additional Information:** Coefficient is an essential tool for businesses that rely on both Salesforce and Google Sheets for their data management and analysis needs. By providing seamless integration between the two platforms, Coefficient enables users to leverage the full capabilities of Google Sheets while ensuring that Salesforce data remains accurate and up-to-date. This app is particularly useful for teams that need to perform complex data analyses and generate detailed reports based on Salesforce data.
## #6 InsightSquared for Salesforce.com by InsightSquared
**Overview: **
InsightSquared is an advanced analytics and reporting tool designed for Salesforce users. This app offers a comprehensive suite of business intelligence features, enabling companies to visualize and analyze their Salesforce data to make better-informed decisions. InsightSquared is particularly useful for sales teams looking to track performance metrics and forecast sales.
**Key Features:**
**Data Visualization:**
- **Interactive Dashboards:** Create dynamic, interactive dashboards that provide real-time insights into key business metrics.
- **Customizable Reports:** Generate customizable reports that meet specific business needs, ensuring relevant data is always accessible.
**Sales Analytics:**
- **Pipeline Management:** Track and analyze sales pipelines to identify opportunities and risks.
- **Forecasting:** Use advanced forecasting tools to predict future sales performance based on historical data.
- **Win/Loss Analysis:** Analyze win/loss ratios to understand sales performance and identify areas for improvement.
**Revenue Operations:**
- **Revenue Metrics:** Track and analyze key revenue metrics to monitor business performance.
- **Quota Management:** Manage and track sales quotas to ensure that sales targets are met.
**Data Integration:**
- **Seamless Salesforce Integration:** Integrates directly with Salesforce to provide real-time data insights.
- **Data Import/Export:** Easily import and export data between Salesforce and InsightSquared.
**Benefits for Sales Teams:**
- **Enhanced Decision-Making:** Gain deeper insights into sales performance with comprehensive analytics and reporting tools.
- **Improved Forecasting:** Use advanced forecasting tools to predict future sales performance accurately.
- **Increased Efficiency:** Save time on data analysis with automated reporting and interactive dashboards.
**Pricing:** $1 USD/user/year
**Rating:** 4.85 (55+ reviews) ⭐⭐⭐⭐⭐
**Link:** [InsightSquared for Salesforce](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N30000005uuY8EAI)
**Additional Information:** InsightSquared is a valuable tool for sales teams looking to improve their data analysis and reporting capabilities. By providing real-time insights and advanced analytics, this app helps businesses make data-driven decisions and optimize their sales strategies. This app is ideal for companies that need to track performance metrics, forecast sales, and manage revenue operations.
## #7 Field Tracker App by Algoworks | 100% Native by Algoworks Solutions Inc
**Overview: **
Field Tracker App by Algoworks is a comprehensive field service management tool that integrates seamlessly with Salesforce. This app is designed to help businesses manage their field service operations efficiently, providing features such as real-time tracking, scheduling, and reporting.
**Key Features:**
**Real-Time Tracking:**
- **GPS Tracking:** Track field service personnel in real-time using GPS technology.
- **Route Optimization:** Optimize routes for field service personnel to reduce travel time and improve efficiency.
**Scheduling and Dispatch:**
- **Automated Scheduling:** Automate the scheduling of field service tasks to ensure timely completion.
- **Job Dispatch:** Dispatch jobs to field service personnel based on availability and proximity.
**Reporting and Analytics:**
- **Custom Reports:** Generate custom reports on field service operations, including performance metrics and job completion rates.
- **Dashboards:** Create interactive dashboards to visualize key field service metrics in real time.
**Integration and Automation:**
- **Seamless Salesforce Integration:** Integrates directly with Salesforce to provide a unified platform for managing field service operations.
- **Workflow Automation:** Automate field service workflows to streamline operations and reduce manual effort.
**Benefits for Sales Teams:**
- **Improved Efficiency:** Optimize field service operations with real-time tracking and automated scheduling.
- **Enhanced Customer Satisfaction:** Ensure timely completion of field service tasks to improve customer satisfaction.
- **Better Decision-Making:** Use detailed reports and dashboards to gain insights into field service performance and make data-driven decisions.
**Pricing:** $2 USD/user/month
**Rating:** 5.00 (35+ reviews) ⭐⭐⭐⭐⭐
**Link:** [Field Tracker App by Algoworks](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N4V00000G5zgmUAB)
**Additional Information:** Field Tracker App is a must-have for businesses that rely on field service operations. By providing real-time tracking, scheduling, and reporting features, this app helps businesses optimize their field service operations and improve customer satisfaction. This app is particularly useful for companies that need to manage a large number of field service personnel and ensure the timely completion of tasks.
## #8 Gecko HRM – all the tools your HR needs by Agilcon d.o.o.
**Overview: **
Gecko HRM by Agilcon is a comprehensive human resource management tool designed for Salesforce users. This app offers a suite of HR features, including employee management, performance tracking, and payroll integration, all within the Salesforce platform.
**Key Features:**
**Employee Management:**
- **Employee Profiles:** Create detailed profiles for employees, including personal information, job roles, and contact details.
- **Attendance Tracking:** Track employee attendance and manage leave requests efficiently.
**Performance Management:**
- **Goal Setting:** Set and track employee goals to monitor performance and progress.
- **Performance Reviews:** Conduct performance reviews and provide feedback to employees.
**Payroll Integration:**
- **Payroll Management:** Integrate with payroll systems to manage employee salaries and benefits.
- **Automated Calculations:** Automate payroll calculations to ensure accuracy and compliance.
**Reporting and Analytics:**
- **Custom Reports:** Generate custom reports on HR metrics, including employee performance, attendance, and payroll data.
- **Dashboards:** Create interactive dashboards to visualize key HR metrics in real-time.
**Integration and Automation:**
- **Seamless Salesforce Integration:** Integrates directly with Salesforce to provide a unified platform for managing HR operations.
- **Workflow Automation:** Automate HR workflows to streamline operations and reduce manual effort.
**Benefits for HR Teams:**
- **Improved Efficiency:** Streamline HR operations with automated workflows and integrated payroll management.
- **Enhanced Employee Management:** Manage employee profiles, attendance, and performance efficiently within Salesforce.
- **Better Decision-Making:** Use detailed reports and dashboards to gain insights into HR performance and make data-driven decisions.
**Pricing:** €5 EUR/user/month
**Rating:** 4.97 (31+ reviews) ⭐⭐⭐⭐⭐
**Link:** [Gecko HRM – all the tools your HR needs](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N30000009ws3fEAA)
**Additional Information:** Gecko HRM is an essential tool for HR teams looking to improve their operations and manage employees more effectively. By providing a comprehensive suite of HR features within Salesforce, this app helps businesses streamline HR processes and enhance employee management. This app is particularly useful for companies that need to manage a large workforce and ensure accurate payroll processing.
## #9 Address Verification from To A Finish by To A Finish LLC
**Overview: **
Address Verification from To A Finish is a powerful tool designed to ensure the accuracy and completeness of address data within Salesforce. This app helps businesses validate, standardize, and enrich address information, improving data quality and operational efficiency. Accurate address data is crucial for effective communication, shipping, and marketing activities.
**Key Features:**
**Address Verification:**
- **Global Coverage:** Verify addresses from multiple countries to ensure accuracy and completeness.
- **Real-Time Verification:** Validate addresses in real-time during data entry, reducing errors and improving data quality.
**Standardization:**
- **Address Formatting:** Standardize addresses to a consistent format, enhancing data uniformity and reducing discrepancies.
- **Bulk Processing:** Efficiently process large volumes of address data with batch verification and standardization capabilities.
**Data Enrichment:**
- **Geocoding:** Append latitude and longitude coordinates to address records for enhanced location-based insights.
- **Additional Data:** Enrich address records with additional information such as postal codes, regions, and localities.
**Integration and Automation:**
- **Seamless Salesforce Integration:** Integrates directly with Salesforce, ensuring that address verification and standardization are part of the CRM workflow.
- **Workflow Automation:** Automate address verification and standardization processes with Salesforce workflow rules and triggers.
**Benefits for Sales Teams:**
- **Improved Data Quality:** Ensure that address data is accurate and up-to-date, reducing errors and improving the reliability of CRM data.
- **Enhanced Customer Engagement:** Utilize accurate address data for targeted marketing campaigns and efficient customer service operations.
- **Operational Efficiency:** Save time and resources by automating address verification and standardization processes.
**Pricing:** $599 USD/company/month
**Rating:** 5.00 (30+ reviews) ⭐⭐⭐⭐⭐
**Link:** [Address Verification from To A Finish](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N300000059eEUEAY)
**Additional Information:** Address Verification from To A Finish is essential for businesses that rely on accurate address data for their operations. By ensuring that all address data within Salesforce is validated and standardized, companies can improve their marketing, shipping, and customer service processes. This app is particularly useful for organizations that handle large volumes of address data and need to maintain high data quality standards.
## #10 ISVapp App Analytics by ISVapp
**Overview: **
ISVapp App Analytics is a comprehensive analytics tool designed for Independent Software Vendors (ISVs) on Salesforce. This app provides detailed insights into app usage, performance, and adoption, helping ISVs understand how their apps are being used and identify areas for improvement. ISVapp is particularly useful for tracking key metrics and making data-driven decisions to enhance app performance and customer satisfaction.
**Key Features:**
**Usage Analytics:**
- **App Usage Tracking:** Monitor how users interact with your app, including frequency and duration of use.
- **Feature Utilization:** Track which features are being used the most and identify underutilized features.
**Performance Metrics:**
- **Performance Monitoring:** Measure the performance of your app, including load times and error rates.
- **Health Check:** Conduct regular health checks to ensure your app is running smoothly and efficiently.
**Customer Insights:**
- **Adoption Metrics:** Track user adoption and retention rates to understand how customers are engaging with your app.
- **Feedback Collection:** Collect user feedback to identify pain points and areas for improvement.
**Reporting and Dashboards:**
- **Custom Reports:** Generate custom reports on app usage, performance, and customer feedback.
- **Interactive Dashboards:** Create interactive dashboards to visualize key metrics and gain insights into app performance.
**Integration and Automation:**
- **Seamless Salesforce Integration:** Integrates directly with Salesforce to provide a unified platform for app analytics.
- **Workflow Automation:** Automate reporting and monitoring processes to save time and ensure timely insights.
**Benefits for ISVs:**
- **Enhanced Visibility:** Gain a comprehensive view of how your app is being used and performed in real-time.
- **Improved App Performance:** Use performance metrics and feedback to make data-driven decisions and enhance app performance.
- **Better Customer Satisfaction:** Track adoption and collect feedback to improve the user experience and increase customer satisfaction.
**Pricing:** $500 USD/company/month
**Rating:** 5.00 (28+ reviews) ⭐⭐⭐⭐⭐
**Link:** [ISVapp App Analytics](https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000G0y2PUAR)
**Additional Information:** ISVapp App Analytics is a valuable tool for ISVs looking to gain insights into their app’s usage and performance. By providing detailed analytics and feedback, this app helps ISVs understand how their apps are being used and identify areas for improvement. This is particularly important for maintaining high customer satisfaction and ensuring the ongoing success of their apps.
## Wrapping Up: Maximizing Salesforce with Advanced Analytics Tools
Integrating specialized analytics apps with Salesforce can significantly enhance your business’s data management, reporting, and decision-making capabilities. Each app reviewed in this article offers unique features designed to address specific business needs, from real-time data synchronization to advanced predictive analytics.
These top 10 analytics Salesforce apps provide essential tools for automating tasks, improving data accuracy, and driving business insights. By leveraging these apps, businesses can unlock the full potential of their Salesforce platform, leading to improved efficiency, better customer engagement, and higher sales performance.
**Recap of the Top 10 Analytics Salesforce Apps:**
1. **XL-Connector by Xappex LLC:** Facilitates seamless data integration between Excel and Salesforce, enhancing data analysis and reporting capabilities.
2. **AscendixRE CRM for Commercial Real Estate & Capital Markets by Ascendix Technologies:** Provides specialized CRM and analytics tools for the commercial real estate sector.
3. **AddressTools Premium:** Address Verification & Standardization by ProvenWorks: Ensures accurate and standardized address data within Salesforce.
4. **Duplicate Management by AI | Find and Merge Duplicates by DataGroomr, LLC:** Uses AI to detect and merge duplicate records, maintaining data integrity.
5. **Coefficient:** Google Sheets Salesforce Integration by Coefficient: Allows seamless data synchronization between Google Sheets and Salesforce for enhanced analysis.
6. **InsightSquared for Salesforce.com by InsightSquared:** Offers comprehensive business intelligence and reporting tools tailored for Salesforce.
7. **Field Tracker App by Algoworks | 100% Native by Algoworks Solutions Inc:** Manages field service operations with real-time tracking and scheduling.
8. **Gecko HRM – all the tools your HR needs by Agilcon d.o.o.:** Provides a comprehensive suite of HR management tools integrated with Salesforce.
9. **Address Verification from To A Finish by To A Finish LLC:** Ensures the accuracy and completeness of address data within Salesforce.
10. **ISVapp App Analytics by ISVapp:** Provides detailed insights into app usage, performance, and adoption for ISVs.
**Why These Apps Matter:**
These analytics tools are not just about managing data; they are about transforming how businesses operate by providing deeper insights, enhancing efficiency, and enabling data-driven decision-making.
The key benefits of integrating these apps with Salesforce include:
- **Enhanced Data Accuracy:** Automated verification and standardization processes ensure that data is consistent and reliable, reducing the risk of errors.
- **Improved Operational Efficiency:** Automating routine tasks such as data syncing, address verification, and duplicate management saves time and resources, allowing teams to focus on strategic activities.
- **Actionable Insights:** Advanced analytics and reporting tools provide valuable insights into sales performance, customer behavior, and market trends, helping businesses make informed decisions.
- **Better Customer Engagement:** Accurate and up-to-date data enables more personalized and effective customer interactions, leading to increased satisfaction and loyalty.
- **Optimized Workflows:** Streamlined processes and automated workflows enhance productivity and ensure that critical tasks are completed efficiently.
By leveraging these powerful analytics Salesforce tools, like the [event monitoring analytics app](https://www.sfapps.info/value-analytics-review/), businesses can maximize the potential of their CRM platform. This leads to improved efficiency, better customer engagement, and ultimately, higher sales performance. Explore these apps on the [Salesforce AppExchange](https://appexchange.salesforce.com/) to find the ones that best meet your needs and drive your team’s success.
Investing in the right analytics tools is a strategic move that can yield significant returns in terms of enhanced operational performance, more insightful data-driven strategies, and stronger customer relationships. As Salesforce continues to evolve, integrating these advanced tools will help businesses stay ahead of the competition and achieve their growth objectives.
The post [Top 10 Analytics Salesforce Apps](https://www.sfapps.info/top-10-analytics-salesforce-apps/) first appeared on [Salesforce Apps](https://www.sfapps.info). | doriansabitov |
1,867,944 | Advanced Server Rendering | React Query with Next.js App Router | In this guide you'll learn how to use React Query with server rendering. What is Server... | 0 | 2024-05-30T18:10:05 | https://dev.to/ryanmabrouk/advanced-server-rendering-react-query-with-nextjs-app-router-bi7 | webdev, nextjs, javascript, tutorial | In this guide you'll learn how to use React Query with server rendering.
## What is Server Rendering?
Server rendering is generating the initial HTML on the server so users see some content immediately when the page loads. This can be done in two ways:
**Server-Side Rendering (SSR):** Generates HTML on the server each time a page is requested.
**Static Site Generation (SSG):** Pre-generates HTML at build time or uses cached versions from previous requests.
## Why is Server Rendering Useful?
With client rendering, the process looks like this:
1. Load markup without content.
2. Load JavaScript.
3. Fetch data with queries.
This requires **at least three server roundtrips** before the user sees any content.
Server rendering simplifies this process:
1. Load markup with content and initial data.
2. Load JavaScript.
**The user sees content as soon as step 1 is complete**, and the page becomes interactive after step 2. The initial data is already included in the markup, so there's no need for an extra data fetch initially!
## How Does This Relate to React Query?
Using React Query you can Prefetch data before generating/rendering the markup On the server then use the data on the client to avoid a new fetch.
Now how to implement these steps..
## Initial setup
The first steps of using React Query is always to create a queryClient and wrap the application in a `<QueryClientProvider>`. When doing server rendering, it's important to create the queryClient instance inside of your app, in React state (an instance ref works fine too). This ensures that data is not shared between different users and requests, while still only creating the queryClient once per component lifecycle.
store.tsx:
```typescript
"use client";
import { useState } from "react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
export default function Store({ children }: { children: React.ReactNode }) {
const [queryClient] = useState(
() =>
new QueryClient({
defaultOptions: {
queries: {
staleTime: 5 * 60 * 1000,
},
},
}),
);
return (
<QueryClientProvider client={queryClient}>
{children}
</QueryClientProvider>
);
}
```
layout.tsx:
```typescript
import Store from "@/provider/store";
export default async function RootLayout({
children,
}: {
children: React.ReactNode;
}) {
return (
<html lang="en">
<body>
<Store>{children}</Store>
</body>
</html>
);
}
```
## Using the Hydration APIs
With just a little more setup, you can use a **queryClient** to prefetch queries during a preload phase, pass a serialized version of that queryClient to the rendering part of the app, and reuse it there. This avoids the drawbacks mentioned earlier.
hydration.tsx :
```typescript
import {
QueryClient,
dehydrate,
HydrationBoundary,
} from "@tanstack/react-query";
import getData from "@/api/getData";
import React from "react";
export default async function Hydration({
children,
}: {
children: React.ReactNode;
}) {
const queryClient = new QueryClient({
defaultOptions: {
queries: {
staleTime: 5 * 60 * 1000, // this sets the cache time to 5 minutes
},
},
});
await Promise.all([
queryClient.prefetchQuery({
queryKey: ["profiles", "user"],
queryFn: () => getData("profiles"),
}),
queryClient.prefetchQuery({
queryKey: ["permissions", "user"],
queryFn: () => getData("permissions"),
}),
]);
return (
<HydrationBoundary state={dehydrate(queryClient)}>
{children}
</HydrationBoundary>
);
}
```
The new layout.tsx:
```typescript
import Hydration from "@/provider/hydration";
import Store from "@/provider/store";
export default async function RootLayout({
children,
}: {
children: React.ReactNode;
}) {
return (
<html lang="en">
<body>
<Store>
<Hydration>{children}</Hydration>
</Store>
</body>
</html>
);
}
```
at a general level, these are the extra steps:
1. Create a constant queryClient using `new QueryClient(options)` (It is important that you set a **staleTime** otherwise, React Query will refetch the data as soon as it reaches the client).
2. Use `await queryClient.prefetchQuery(...)` for each query you want to prefetch.
Use `await Promise.all(...)` to fetch the queries in parallel when possible.
3. **It's fine to have queries that aren't prefetched**. These won't be server-rendered; instead, they will be fetched on the client after the application is interactive. This can be great for content shown only after user interaction or content far down on the page to avoid blocking more critical content.
4. Wrap your tree with `<HydrationBoundary state={dehydrate(queryClient)}>` where dehydratedState comes from the framework loader.
## An Important Detail
When using React Query with server rendering, there are actually **three queryClient instances** involved in the process:
1. Preloading Phase:
Before rendering, a queryClient is created to prefetch data.
Necessary data is fetched and stored in this queryClient.
2. Server Rendering Phase:
Once data is prefetched, it's dehydrated (serialized) and sent to the server rendering process.
A new queryClient is created on the server and injected with dehydrated data.
This ensures the server generates fully populated HTML for the client.
3. Client Rendering Phase:
Dehydrated data is passed to the client.
Another queryClient is created on the client and rehydrated with the data.
This ensures the client starts with the same data, maintaining consistency and skipping initial data fetching.
**This ensures all processes start with the same data, so they can return the same markup.**
Then with the `useQuery()` hook, you can use your prefetched queries as you normally would, and the data will be prefetched during the preloading phase. This means that when you use `useQuery()` to fetch data in your components, React Query will automatically handle the prefetching of that data before the component renders. This helps improve the performance of your application by ensuring that the data is available when needed.
```typescript
"use client";
import getData from "@/api/getData";
import { useQuery } from "@tanstack/react-query";
const { data: profiles } = useQuery({
queryKey: ["profiles", "user"],
queryFn: () => getData("profiles"),
});
const { data: permissions } = useQuery({
queryKey: ["permissions", "user"],
queryFn: () => getData("permissions"),
});
```
## High memory consumption on the server
When you create a QueryClient for each request in React Query, it generates an isolated cache specific to that client. This cache remains in memory for a specified period known as the **gcTime**. If there's a high volume of requests within that period, it can lead to significant memory consumption on the server.
By default, on the server, **gcTime** is set to **Infinity**, meaning manual garbage collection is disabled, and memory is automatically cleared once a request is completed. However, if you set a **non-Infinity gcTime**, you're responsible for clearing the cache early to prevent excessive memory usage.
Avoid setting **gcTime** to 0, as it might cause a hydration error. The Hydration Boundary places necessary data into the cache for rendering. If the garbage collector removes this data before rendering completes, it can cause issues. Instead, consider setting it to 2 * 1000, allowing sufficient time for the app to reference the data.
To manage memory consumption and clear the cache when it's no longer needed, you can call `queryClient.clear()` after handling the request and sending the dehydrated state to the client. Alternatively, you can opt for a smaller **gcTime** to automatically clear memory sooner. This ensures efficient memory usage and prevents memory-related issues on the server.
example:
```typescript
const queryClient = new QueryClient({
defaultOptions: {
queries: {
gcTime: 2 * 2000, // this sets the garbage collection time to 2 seconds
},
},
});
```
In wrapping up, React Query simplifies the process of fetching and caching data, especially when dealing with server-side rendering. By fetching data in advance on the server and seamlessly transferring it to the client, React Query ensures a smooth and consistent user experience. Plus, with features like adjusting the memory management settings, developers can fine-tune performance to meet their application's needs. With React Query, developers can focus on building engaging applications without worrying about complex data management tasks, ultimately delivering faster and more responsive user experiences. | ryanmabrouk |
1,870,663 | Matthew Danchak's Approach to Mental Health in the Workplace | In today's fast-paced work environment, mental health has become an essential aspect of overall... | 0 | 2024-05-30T18:07:24 | https://dev.to/matthewdanchak/matthew-danchaks-approach-to-mental-health-in-the-workplace-561h | matthewdanchak, mentalhealth, workplace, mentalhealthmatters | In today's fast-paced work environment, mental health has become an essential aspect of overall well-being. Matthew Danchak, a dedicated nursing professional with over a decade of experience, has been at the forefront of mental health advocacy, particularly in the workplace. His unique approach to mental health is not only innovative but also practical, making it easier for employers and employees to create a healthier work environment.
## Understanding the Importance of Mental Health at Work
Mental health is as crucial as physical health. When employees are mentally healthy, they are more productive, engaged, and motivated. On the other hand, poor mental health can lead to decreased productivity, increased absenteeism, and a higher turnover rate. Matthew Danchak emphasizes that addressing mental health in the workplace is not just a moral obligation but also a business imperative.
## Creating a Supportive Environment
One of the key aspects of Danchak's approach is creating a supportive work environment. He believes that the foundation of good mental health begins with a culture of support and understanding. This includes:
Open Communication: Encouraging open and honest conversations about mental health. Employees should feel comfortable discussing their mental health issues without fear of judgment or retribution.
Education and Training: Providing mental health education and training for both employees and management. This helps in recognizing the signs of mental health issues and knowing how to respond appropriately.
Access to Resources: Ensuring that employees have access to mental health resources, such as counseling services, employee assistance programs, and mental health days.
## Promoting Work-Life Balance
Danchak is a strong advocate for work-life balance. He believes that employers should promote policies that allow employees to balance their work and personal lives effectively. This can include flexible working hours, remote work options, and encouraging employees to take their full allotment of vacation days.
**Implementing Stress-Reduction Strategies**
Stress is a major contributor to mental health issues in the workplace. Danchak's approach includes implementing stress-reduction strategies such as:
Mindfulness and Meditation: Introducing mindfulness and meditation practices in the workplace. These practices can help employees manage stress and improve their overall well-being.
Physical Activity: Encouraging physical activity through initiatives like company-sponsored fitness programs, yoga sessions, or even simple walking meetings.
Breaks and Downtime: Promoting regular breaks throughout the workday to prevent burnout. Encouraging employees to take short breaks can significantly reduce stress and increase productivity.
## Building a Resilient Workforce
Resilience is the ability to bounce back from challenges and adversity. Danchak believes that building a resilient workforce is crucial for maintaining good mental health. This involves:
Training in Resilience Skills: Offering training programs that focus on building resilience skills, such as problem-solving, adaptability, and emotional regulation.
Supportive Leadership: Encouraging leaders to model resilient behaviors and provide support to their teams during challenging times.
Positive Work Environment: Fostering a positive work environment where employees feel valued and appreciated. This can be achieved through recognition programs, team-building activities, and a strong sense of community.
## Conclusion
[Matthew Danchak](https://matthewdanchakofficial.tumblr.com/)'s approach to mental health in the workplace is both comprehensive and compassionate. By creating a supportive environment, promoting work-life balance, implementing stress-reduction strategies, and building a resilient workforce, Danchak helps organizations foster a healthier, more productive work environment. His dedication to mental health advocacy serves as an inspiration for employers and employees alike, demonstrating that prioritizing mental health is not only beneficial but essential for long-term success.
| matthewdanchak |
1,870,662 | Best Canadian Immigration Consultants In Dubai | Immigrating to Canada is a dream for many, and the journey can be complex and challenging. This is... | 0 | 2024-05-30T18:06:09 | https://dev.to/seo_digitalarab_01ee2735/best-canadian-immigration-consultants-in-dubai-13dn | Immigrating to Canada is a dream for many, and the journey can be complex and challenging. This is where professional immigration consultants come into play, simplifying the process and increasing your chances of success. One such expert in Dubai is Hof Migration. In this article, we'll explore why Hof Migration is considered one of the best Canadian immigration consultants in Dubai.
Why Choose Canadian Immigration?
Canada is renowned for its high quality of life, diverse culture, and ample opportunities. It's no surprise that it's a top destination for immigrants worldwide. With excellent healthcare, education, and a strong economy, Canada offers a promising future for individuals and families alike. Moreover, Canada's welcoming immigration policies make it an attractive option for those seeking a new beginning [Best Canadian Immigration Consultants In Dubai.](https://hofmigration.com/
https://hofmigration.com/)
Understanding the Role of Immigration Consultants
Navigating the immigration process can be overwhelming, with numerous forms, regulations, and deadlines. Immigration consultants are professionals who guide applicants through this intricate process. They ensure that all documents are correctly prepared and submitted, significantly reducing the risk of errors and rejections. Their expertise and experience are invaluable in securing a successful immigration outcome.
About Hof Migration
Hof Migration is a distinguished immigration consultancy based in Dubai, specializing in Canadian immigration services. With a mission to provide exceptional support and guidance, Hof Migration has helped countless individuals and families achieve their dream of moving to Canada. Their commitment to excellence and client satisfaction sets them apart in the industry.
Why Hof Migration Stands Out
Hof Migration boasts a team of seasoned experts with extensive knowledge of Canadian immigration laws and procedures. They have a proven track record of success, evidenced by numerous positive client testimonials and high success rates. The personalized approach and dedication to each client's unique needs make Hof Migration a preferred choice for many.
Services Offered by Hof Migration
Initial Consultation and Assessment
The journey with Hof Migration begins with a comprehensive consultation. During this initial meeting, consultants assess your eligibility and discuss the best immigration pathways for you.
Application Preparation and Submission
Once the best immigration route is identified, Hof Migration assists with preparing and submitting your application. Their meticulous attention to detail ensures that all documentation is accurate and complete.
Post-Landing Services
Hof Migration's support doesn't end once you receive your visa. They offer post-landing services to help you settle in Canada, including assistance with finding accommodation and understanding the local community.
Canadian Immigration Programs Hof Migration Specializes In
Express Entry
The Express Entry system is a popular pathway for skilled workers to immigrate to Canada. Hof Migration's expertise in this program can help streamline your application process.
Provincial Nominee Program (PNP)
Each Canadian province has its own immigration programs. Hof Migration can guide you through the specific requirements and benefits of these programs.
Family Sponsorship
Family reunification is a key aspect of Canadian immigration. Hof Migration assists with sponsorship applications, helping families come together in Canada.
Student Visa
Canada is home to some of the world's top educational institutions. [Hof Migration](https://hofmigration.com/
https://hofmigration.com/) aids students in obtaining visas to pursue their studies in Canada.
Business Immigration
For entrepreneurs and investors, Hof Migration offers guidance on business immigration options, including start-up visas and investor programs. | seo_digitalarab_01ee2735 | |
1,870,661 | task 26 | 1) from selenium import webdriver from selenium.webdriver.common.by import By from... | 0 | 2024-05-30T18:00:32 | https://dev.to/abul_4693/task-26-7c0 | 1) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Initialize Chrome WebDriver
driver = webdriver.Chrome()
# Navigate to IMDb search page
driver.get("https://www.imdb.com/search/name/")
# Wait for the search input field to be visible
try:
search_input = WebDriverWait(driver, 10).until(
EC.visibility_of_element_located((By.ID, "navbar-query"))
)
# Verify if the search input field is visible
if search_input:
print("Successfully navigated to IMDb search page.")
else:
print("Failed to navigate to IMDb search page.")
except Exception as e:
print(f"An error occurred: {e}")
finally:
# Close the browser session
driver.quit()
2) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Initialize Chrome WebDriver
driver = webdriver.Chrome()
# Navigate to the webpage
driver.get("https://www.example.com") # Replace with the actual URL
try:
# Define an explicit wait
wait = WebDriverWait(driver, 10)
# Fill data in input boxes
input_box1 = wait.until(EC.visibility_of_element_located((By.ID, "input-box1")))
input_box1.send_keys("Data for input box 1")
input_box2 = wait.until(EC.visibility_of_element_located((By.ID, "input-box2")))
input_box2.send_keys("Data for input box 2")
# Select options in select boxes
select_box1 = wait.until(EC.visibility_of_element_located((By.ID, "select-box1")))
select_box1.click()
option1 = wait.until(EC.visibility_of_element_located((By.XPATH, "//option[text()='Option 1']")))
option1.click()
select_box2 = wait.until(EC.visibility_of_element_located((By.ID, "select-box2")))
select_box2.click()
option2 = wait.until(EC.visibility_of_element_located((By.XPATH, "//option[text()='Option 2']")))
option2.click()
# Choose options in dropdown menus
dropdown_menu1 = wait.until(EC.visibility_of_element_located((By.ID, "dropdown-menu1")))
dropdown_menu1.click()
dropdown_menu1_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 1']")))
dropdown_menu1_option.click()
dropdown_menu2 = wait.until(EC.visibility_of_element_located((By.ID, "dropdown-menu2")))
dropdown_menu2.click()
dropdown_menu2_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 2']")))
dropdown_menu2_option.click()
# Perform a search
search_button = wait.until(EC.element_to_be_clickable((By.ID, "search-button")))
search_button.click()
print("Data filled in input boxes, select boxes, and dropdown menus. Search performed successfully.")
except Exception as e:
print(f"An error occurred: {e}")
finally:
# Close the browser session
driver.quit()
3) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Initialize Chrome WebDriver
driver = webdriver.Chrome()
# Navigate to the webpage
driver.get("https://www.example.com") # Replace with the actual URL
try:
# Define an explicit wait
wait = WebDriverWait(driver, 10)
# Fill data in input boxes
input_box1 = wait.until(EC.visibility_of_element_located((By.ID, "input-box1")))
input_box1.send_keys("Data for input box 1")
input_box2 = wait.until(EC.visibility_of_element_located((By.ID, "input-box2")))
input_box2.send_keys("Data for input box 2")
# Select options in select boxes
select_box1 = wait.until(EC.element_to_be_clickable((By.ID, "select-box1")))
select_box1.click()
option1 = wait.until(EC.visibility_of_element_located((By.XPATH, "//option[text()='Option 1']")))
option1.click()
select_box2 = wait.until(EC.element_to_be_clickable((By.ID, "select-box2")))
select_box2.click()
option2 = wait.until(EC.visibility_of_element_located((By.XPATH, "//option[text()='Option 2']")))
option2.click()
# Choose options in dropdown menus
dropdown_menu1 = wait.until(EC.element_to_be_clickable((By.ID, "dropdown-menu1")))
dropdown_menu1.click()
dropdown_menu1_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 1']")))
dropdown_menu1_option.click()
dropdown_menu2 = wait.until(EC.element_to_be_clickable((By.ID, "dropdown-menu2")))
dropdown_menu2.click()
dropdown_menu2_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 2']")))
dropdown_menu2_option.click()
# Perform a search
search_button = wait.until(EC.element_to_be_clickable((By.ID, "search-button")))
search_button.click()
print("Data filled in input boxes, select boxes, and dropdown menus. Search performed successfully.")
except Exception as e:
print(f"An error occurred: {e}")
finally:
# Close the browser session
driver.quit()
| abul_4693 | |
1,845,831 | Newbie! | Hiya! just joined DEV.to! | 0 | 2024-05-08T03:21:10 | https://dev.to/sia324189/newbie-427l | hacker, ethicalhacking, pentester | Hiya!
just joined DEV.to!
| sia324189 |
1,870,659 | Discover the Enchantment of Bali: A Tropical Paradise Beckons | Introduction Welcome to Bali, the ultimate tropical paradise that captivates travelers with its... | 0 | 2024-05-30T17:55:34 | https://dev.to/travelgo/discover-the-enchantment-of-bali-a-tropical-paradise-beckons-2c0h | bali, indonesia, travel, asia | <p> </p><h3 class="graf graf--h3" name="345b"><strong class="markup--strong markup--p-strong">Introduction</strong></h3><p class="graf graf--p" name="d657">Welcome to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a>, the ultimate tropical paradise that captivates travelers with its stunning landscapes, vibrant culture, and warm hospitality. Nestled in the heart of Indonesia, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a> is renowned for its lush rice terraces, pristine beaches, and ancient temples that offer a glimpse into the island’s rich heritage. Join us on a virtual journey as we explore the enchanting beauty and cultural treasures of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a>, a destination that promises unforgettable experiences and cherished memories.</p><p class="graf graf--p graf--empty" name="1cb7"><br /></p><figure class="graf graf--figure" name="e8e7"><img class="graf-image" data-height="667" data-image-id="0*jCJNQXOY7UVn23RH" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*jCJNQXOY7UVn23RH" /></figure><p class="graf graf--p" name="09ea"><strong class="markup--strong markup--p-strong">Spectacular Sunsets and Pristine Beaches: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a><strong class="markup--strong markup--p-strong"> beaches, sunset views, tropical paradise”</strong></p><p class="graf graf--p" name="6277"><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a> boasts some of the most breathtaking beaches in the world, each offering its own unique charm and allure. From the iconic surf breaks of Kuta and Seminyak to the tranquil shores of Nusa Dua and Jimbaran, there’s a beach to suit every mood and preference. Spend your days lounging on powdery white sands, swimming in crystal-clear waters, or indulging in thrilling water sports such as surfing, snorkeling, and scuba diving. As the sun sets over the horizon, witness nature’s masterpiece unfold with spectacular hues of orange, pink, and purple painting the sky in a mesmerizing display.</p><p class="graf graf--p" name="5b93"><strong class="markup--strong markup--p-strong">Cultural Riches and Spiritual Serenity: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a><strong class="markup--strong markup--p-strong"> temples, cultural experiences, spiritual retreat”</strong></p><p class="graf graf--p" name="9ee3"><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a> is a land steeped in rich cultural traditions and spiritual heritage, evident in its myriad temples and sacred sites that dot the island’s landscape. Explore the ancient wonders of Uluwatu Temple, perched on a cliff overlooking the Indian Ocean, and marvel at its stunning architecture and panoramic views. Immerse yourself in the tranquility of Ubud, Bali’s cultural heartland, where lush rainforests, terraced rice fields, and artisan villages beckon with their timeless charm. Discover the spiritual serenity of Tirta Empul Temple, where sacred springs offer purification rituals amidst serene surroundings.</p><p class="graf graf--p graf--empty" name="8114"><br /></p><figure class="graf graf--figure" name="196e"><img class="graf-image" data-height="1327" data-image-id="0*R_r3TGmE47R1j__X" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*R_r3TGmE47R1j__X" /></figure><p class="graf graf--p" name="8d86"><strong class="markup--strong markup--p-strong">Idyllic Villages and Breathtaking Landscapes: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a><strong class="markup--strong markup--p-strong"> rice terraces, Ubud, rural retreat”</strong></p><p class="graf graf--p" name="6db7"><a class="markup--anchor markup--p-anchor" data-href="http://Click here for the best offers at Hotels!" href="http://Click%20here%20for%20the%20best%20offers%20at%20Hotels!" rel="noopener" target="_blank"><strong class="markup--strong markup--p-strong">Click here for the best offers at Hotels!</strong></a></p><p class="graf graf--p" name="36d9">Venture off the beaten path to explore <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a>’s idyllic villages and breathtaking landscapes, where time seems to stand still amidst the beauty of nature. Trek through the verdant rice terraces of Tegallalang and Jatiluwih, where emerald-green fields cascade down hillsides like stairways to heaven, providing a picturesque backdrop for unforgettable adventures. Discover the rural charm of Sidemen and Munduk, where traditional Balinese architecture, lush gardens, and cascading waterfalls create a tranquil oasis away from the hustle and bustle of the tourist trail.</p><p class="graf graf--p" name="af8f"><strong class="markup--strong markup--p-strong">Culinary Delights and Gastronomic Adventures: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a><strong class="markup--strong markup--p-strong"> cuisine, Indonesian food, culinary experiences”</strong></p><p class="graf graf--p" name="6cae"><a class="markup--anchor markup--p-anchor" data-href="http://Click here for the best offers at Hotels!" href="http://Click%20here%20for%20the%20best%20offers%20at%20Hotels!" rel="noopener" target="_blank"><strong class="markup--strong markup--p-strong">Click here for the best offers at Hotels!</strong></a></p><p class="graf graf--p graf--empty" name="1c91"><br /></p><figure class="graf graf--figure" name="315a"><img class="graf-image" data-height="720" data-image-id="0*5onit9LJw8RuMA2H.jpg" data-width="1280" src="https://cdn-images-1.medium.com/max/800/0*5onit9LJw8RuMA2H.jpg" /></figure><p class="graf graf--p" name="ea8c">No visit to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a> is complete without indulging in its world-renowned culinary delights, a tantalizing fusion of flavors influenced by Indonesian, Chinese, and Indian cuisines. Sample traditional Balinese dishes such as nasi goreng (fried rice), mie goreng (fried noodles), and babi guling (suckling pig), served with fragrant spices and aromatic herbs that tantalize the taste buds. Experience the vibrant street food scene at local markets and warungs (small eateries), where you can savor authentic flavors and mingle with friendly locals.</p><p class="graf graf--p" name="5cb2"><a class="markup--anchor markup--p-anchor" data-href="http://Click here for the best offers at Hotels!" href="http://Click%20here%20for%20the%20best%20offers%20at%20Hotels!" rel="noopener" target="_blank"><strong class="markup--strong markup--p-strong">Click here for the best offers at Hotels!</strong></a></p><p class="graf graf--p" name="9a6c"><strong class="markup--strong markup--p-strong">Planning Your </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a><strong class="markup--strong markup--p-strong"> Adventure: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a><strong class="markup--strong markup--p-strong"> travel tips, Indonesia vacation, best time to visit </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a><strong class="markup--strong markup--p-strong">”</strong></p><p class="graf graf--p" name="b2da"><a class="markup--anchor markup--p-anchor" data-href="https://ttravelgoo.blogspot.com/" href="https://ttravelgoo.blogspot.com/" rel="noopener" target="_blank">Visit our website for more offers!</a></p><p class="graf graf--p" name="519e"><a class="markup--anchor markup--p-anchor" data-href="https://www.facebook.com/profile.php?id=61560198516319" href="https://www.facebook.com/profile.php?id=61560198516319" rel="noopener" target="_blank">Our Facebook page!</a> ✅</p><p class="graf graf--p" name="523c">Whether you’re seeking sun-drenched beaches, cultural experiences, or spiritual enlightenment, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a> offers an unforgettable escape that will leave you enchanted and longing for more. With its stunning natural beauty, rich cultural heritage, and warm hospitality, this tropical paradise is a destination like no other. So pack your bags, book your ticket, and prepare to embark on a journey to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/id/bali.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Bali</a>, where dreams become reality and memories are made to last a lifetime.</p> | travelgo |
1,870,658 | Go Lang Advance Concepts | 1. Concurrency Patterns Worker Pools Worker pools allow you to manage a large number of... | 27,438 | 2024-05-30T17:54:34 | https://dev.to/syedmuhammadaliraza/go-lang-advance-concepts-2dpi | go, webdev, programming, coding | ### 1. Concurrency Patterns
**Worker Pools**
Worker pools allow you to manage a large number of goroutines efficiently by limiting the number of active workers.
```go
package main
import (
"fmt"
"time"
)
func worker(id int, jobs <-chan int, results chan<- int) {
for j := range jobs {
fmt.Printf("Worker %d processing job %d\n", id, j)
time.Sleep(time.Second)
results <- j * 2
}
}
func main() {
const numJobs = 5
jobs := make(chan int, numJobs)
results := make(chan int, numJobs)
// Start workers
for w := 1; w <= 3; w++ {
go worker(w, jobs, results)
}
// Send jobs
for j := 1; j <= numJobs; j++ {
jobs <- j
}
close(jobs)
// Collect results
for a := 1; a <= numJobs; a++ {
fmt.Println("Result:", <-results)
}
}
```
**Select Statement**
The `select` statement is used to wait on multiple channel operations.
```go
package main
import (
"fmt"
"time"
)
func main() {
c1 := make(chan string)
c2 := make(chan string)
go func() {
time.Sleep(1 * time.Second)
c1 <- "one"
}()
go func() {
time.Sleep(2 * time.Second)
c2 <- "two"
}()
for i := 0; i < 2; i++ {
select {
case msg1 := <-c1:
fmt.Println("Received", msg1)
case msg2 := <-c2:
fmt.Println("Received", msg2)
}
}
}
```
#### 2. Reflection
Reflection in Go allows you to inspect the types of variables at runtime and manipulate objects with dynamic types.
**Basic Reflection Example**
```go
package main
import (
"fmt"
"reflect"
)
func main() {
var x float64 = 3.4
v := reflect.ValueOf(x)
fmt.Println("Type:", v.Type())
fmt.Println("Kind:", v.Kind())
fmt.Println("Value:", v.Float())
}
```
**Modifying Values with Reflection**
To modify a value using reflection, the value must be settable, which means it must be addressable.
```go
package main
import (
"fmt"
"reflect"
)
func main() {
var x float64 = 3.4
p := reflect.ValueOf(&x)
v := p.Elem()
v.SetFloat(7.1)
fmt.Println("Updated value:", x)
}
```
#### 3. Interfacing with C Libraries
Go can call C libraries using cgo, which is useful for integrating with existing C codebases or libraries.
**Calling a Simple C Function**
First, create a simple C library. For example, create a file named `myclib.c`:
```c
// myclib.c
#include <stdio.h>
void myprint(const char* s) {
printf("%s\n", s);
}
```
Then create a Go program that uses this C function:
```go
package main
/*
#include <stdio.h>
#include <stdlib.h>
void myprint(const char* s);
*/
import "C"
import "unsafe"
func main() {
msg := C.CString("Hello from C!")
C.myprint(msg)
C.free(unsafe.Pointer(msg))
}
```
| syedmuhammadaliraza |
1,870,657 | What is DevOps? | DevOps is an evolving philosophy and framework that encourages faster, better application development... | 0 | 2024-05-30T17:52:43 | https://dev.to/bhuvaneshwa/what-is-devops-36f6 | devops, aws, beginners, fullstack | DevOps is an evolving philosophy and framework that encourages faster, better application development and faster release of new or revised software features or products to customers.
The practice of DevOps encourages smoother, continuous communication, collaboration, integration, visibility, and transparency between application development teams (Dev) and their IT operations team (Ops) counterparts.
This closer relationship between “Dev” and “Ops” permeates every phase of the DevOps lifecycle: from initial software planning to code, build, test, and release phases and on to deployment, operations, and ongoing monitoring. This relationship propels a continuous customer feedback loop of further improvement, development, testing, and deployment. One result of these efforts can be the more rapid, continual release of necessary feature changes or additions.
Some people group DevOps goals into four categories: culture, automation, measurement, and sharing (CAMS), and DevOps tools can aid in these areas. These tools can make development and operations workflows more streamlined and collaborative, automating previously time-consuming, manual, or static tasks involved in integration, development, testing, deployment, or monitoring.
## Why Does it matter?
Along with its efforts to break down barriers to communication and collaboration between development and IT operations teams, a core value of DevOps is customer satisfaction and the faster delivery of value. DevOps is also designed to propel business innovation and the drive for continuous process improvement.
The practice of DevOps encourages faster, better, more secure delivery of business value to an organization’s end customers. This value might take the form of more frequent product releases, features, or updates. It can involve how quickly a product release or new feature gets into customers’ hands -all with the proper levels of quality and security. Or, it might focus on how quickly an issue or bug is identified, and then resolved and re-released.
Underlying infrastructure also supports DevOps with seamless performance, availability, and reliability of software as it is first developed and tested then released into production.
## Benefits of DevOps:
DevOps proponents describe several business and technical benefits, many of which can result in happier customers. Some benefits of DevOps include:
- Faster, better product delivery
- Faster issue resolution and reduced complexity
- Greater scalability and availability
- More stable operating environments
- Better resource utilization
- Greater automation
- Greater visibility into system outcomes
- Greater innovation
## DevOps Toolchain:
Followers of DevOps practices often use certain DevOps-friendly tools as part of their DevOps “toolchain.” The goal of these tools is to further streamline, shorten, and automate the various stages of the software delivery workflow (or “pipeline”). Many such tools also promote core DevOps tenets of automation, collaboration, and integration between development and operations teams. The following shows a sample of tools used at various DevOps lifecycle stages.
### Plan
. This phase helps define business value and requirements. Sample tools include Jira or Git to help track known issues and perform project management.
### Code.
This phase involves software design and the creation of software code. Sample tools include GitHub, GitLab, Bitbucket, or Stash.
### Build.
In this phase, you manage software builds and versions, and use automated tools to help compile and package code for future release to production. You use source code repositories or package repositories that also “package” infrastructure needed for product release. Sample tools include Docker, Ansible, Puppet, Chef, Gradle, Maven, or JFrog Artifactory.
### Test.
This phase involves continuous testing (manual or automated) to ensure optimal code quality. Sample tools include JUnit, Codeception, Selenium, Vagrant, TestNG, or BlazeMeter.
Deploy. This phase can include tools that help manage, coordinate, schedule, and automate product releases into production. Sample tools include Puppet, Chef, Ansible, Jenkins, Kubernetes, OpenShift, OpenStack, Docker, or Jira.
### Operate.
This phase manages software during production. Sample tools include Ansible, Puppet, PowerShell, Chef, Salt, or Otter.
### Monitor.
This phase involves identifying and collecting information about issues from a specific software release in production. Sample tools include New Relic, Datadog, Grafana, Wireshark, Splunk, Nagios, or Slack.
| bhuvaneshwa |
1,870,654 | task 25 | 1) from selenium import webdriver from selenium.webdriver.common.by import By from... | 0 | 2024-05-30T17:45:35 | https://dev.to/abul_4693/task-25-1fc7 | 1) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Initialize Chrome WebDriver
driver = webdriver.Chrome()
# Navigate to IMDb search page
driver.get("https://www.imdb.com/search/name/")
# Wait for the search input field to be visible
search_input = WebDriverWait(driver, 10).until(
EC.visibility_of_element_located((By.ID, "navbar-query"))
)
# Verify if the search input field is visible
if search_input:
print("Successfully navigated to IMDb search page.")
else:
print("Failed to navigate to IMDb search page.")
# Close the browser session
driver.quit()
3) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Initialize Chrome WebDriver
driver = webdriver.Chrome()
# Navigate to the webpage
driver.get("https://www.example.com") # Replace with the actual URL
try:
# Define an explicit wait
wait = WebDriverWait(driver, 10)
# Fill data in input boxes
input_box1 = wait.until(EC.visibility_of_element_located((By.ID, "input-box1")))
input_box1.send_keys("Data for input box 1")
input_box2 = wait.until(EC.visibility_of_element_located((By.ID, "input-box2")))
input_box2.send_keys("Data for input box 2")
# Select options in select boxes
select_box1 = wait.until(EC.visibility_of_element_located((By.ID, "select-box1")))
select_box1.select_by_visible_text("Option 1")
select_box2 = wait.until(EC.visibility_of_element_located((By.ID, "select-box2")))
select_box2.select_by_value("option2")
# Choose options in dropdown menus
dropdown_menu1 = wait.until(EC.visibility_of_element_located((By.ID, "dropdown-menu1")))
dropdown_menu1.click()
dropdown_menu1_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 1']")))
dropdown_menu1_option.click()
dropdown_menu2 = wait.until(EC.visibility_of_element_located((By.ID, "dropdown-menu2")))
dropdown_menu2.click()
dropdown_menu2_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 2']")))
dropdown_menu2_option.click()
# Perform a search
search_button = wait.until(EC.visibility_of_element_located((By.ID, "search-button")))
search_button.click()
print("Data filled in input boxes, select boxes, and dropdown menus. Search performed successfully.")
except Exception as e:
print(f"An error occurred: {e}")
finally:
# Close the browser session
driver.quit()
2) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Initialize Chrome WebDriver
driver = webdriver.Chrome()
# Navigate to the webpage
driver.get("https://www.example.com") # Replace with the actual URL
try:
# Define an explicit wait
wait = WebDriverWait(driver, 10)
# Fill data in input boxes
input_box1 = wait.until(EC.visibility_of_element_located((By.ID, "input-box1")))
input_box1.send_keys("Data for input box 1")
input_box2 = wait.until(EC.visibility_of_element_located((By.ID, "input-box2")))
input_box2.send_keys("Data for input box 2")
# Select options in select boxes
select_box1 = wait.until(EC.visibility_of_element_located((By.ID, "select-box1")))
select_box1.select_by_visible_text("Option 1")
select_box2 = wait.until(EC.visibility_of_element_located((By.ID, "select-box2")))
select_box2.select_by_value("option2")
# Choose options in dropdown menus
dropdown_menu1 = wait.until(EC.visibility_of_element_located((By.ID, "dropdown-menu1")))
dropdown_menu1.click()
dropdown_menu1_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 1']")))
dropdown_menu1_option.click()
dropdown_menu2 = wait.until(EC.visibility_of_element_located((By.ID, "dropdown-menu2")))
dropdown_menu2.click()
dropdown_menu2_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 2']")))
dropdown_menu2_option.click()
# Perform a search
search_button = wait.until(EC.visibility_of_element_located((By.ID, "search-button")))
search_button.click()
print("Data filled in input boxes, select boxes, and dropdown menus. Search performed successfully.")
except Exception as e:
print(f"An error occurred: {e}")
finally:
# Close the browser session
driver.quit()
3) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Initialize Chrome WebDriver
driver = webdriver.Chrome()
# Navigate to the webpage
driver.get("https://www.example.com") # Replace with the actual URL
try:
# Define an explicit wait
wait = WebDriverWait(driver, 10)
# Fill data in input boxes
input_box1 = wait.until(EC.visibility_of_element_located((By.ID, "input-box1")))
input_box1.send_keys("Data for input box 1")
input_box2 = wait.until(EC.visibility_of_element_located((By.ID, "input-box2")))
input_box2.send_keys("Data for input box 2")
# Select options in select boxes
select_box1 = wait.until(EC.element_to_be_clickable((By.ID, "select-box1")))
select_box1.click()
option1 = wait.until(EC.visibility_of_element_located((By.XPATH, "//option[text()='Option 1']")))
option1.click()
select_box2 = wait.until(EC.element_to_be_clickable((By.ID, "select-box2")))
select_box2.click()
option2 = wait.until(EC.visibility_of_element_located((By.XPATH, "//option[text()='Option 2']")))
option2.click()
# Choose options in dropdown menus
dropdown_menu1 = wait.until(EC.element_to_be_clickable((By.ID, "dropdown-menu1")))
dropdown_menu1.click()
dropdown_menu1_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 1']")))
dropdown_menu1_option.click()
dropdown_menu2 = wait.until(EC.element_to_be_clickable((By.ID, "dropdown-menu2")))
dropdown_menu2.click()
dropdown_menu2_option = wait.until(EC.visibility_of_element_located((By.XPATH, "//li[text()='Option 2']")))
dropdown_menu2_option.click()
# Perform a search
search_button = wait.until(EC.element_to_be_clickable((By.ID, "search-button")))
search_button.click()
print("Data filled in input boxes, select boxes, and dropdown menus. Search performed successfully.")
except Exception as e:
print(f"An error occurred: {e}")
finally:
# Close the browser session
driver.quit()
| abul_4693 | |
1,870,653 | Mastering React Hooks: Best Practices for Efficient and Maintainable Code | Introduction In the ever-evolving landscape of React development, React Hooks have emerged as a... | 0 | 2024-05-30T17:44:53 | https://dev.to/shantih_palani/mastering-react-hooks-best-practices-for-efficient-and-maintainable-code-4mp5 | react, reacthooks, bestpractice, hooks | **Introduction**
In the ever-evolving landscape of React development, React Hooks have emerged as a powerful tool for managing state and side effects in functional components. With their introduction, developers have gained a more intuitive and concise way to write React code. However, as with any new feature, understanding and following best practices is essential for writing efficient and maintainable code. In this blog post, we'll dive deep into React Hooks and explore best practices to help you master them.
**1. Embrace Functional Components**
Functional components are lightweight and easier to read. Here's a simple example demonstrating the transition from a class component to a functional component using Hooks.
Class Component:
```javascript
class Counter extends React.Component {
state = { count: 0 };
increment = () => {
this.setState({ count: this.state.count + 1 });
};
render() {
return (
<div>
<p>Count: {this.state.count}</p>
<button onClick={this.increment}>Increment</button>
</div>
);
}
}
```
Functional Component with Hooks:
```javascript
import React, { useState } from 'react';
const Counter = () => {
const [count, setCount] = useState(0);
const increment = () => {
setCount(count + 1);
};
return (
<div>
<p>Count: {count}</p>
<button onClick={increment}>Increment</button>
</div>
);
};
```
**2. Use Hooks Sparingly and Strategically**
Avoid overcomplicating components with too many Hooks. Keep components focused and cohesive.
Bad Example:
```javascript
const Component = () => {
const [state1, setState1] = useState(0);
const [state2, setState2] = useState('');
const [state3, setState3] = useState(false);
const [state4, setState4] = useState([]);
// Too many state variables can make the component hard to manage
// logic...
};
```
Good Example:
```javascript
const Component = () => {
const [count, setCount] = useState(0);
const [text, setText] = useState('');
// logic...
};
```
**3. Follow the Rules of Hooks**
Always call Hooks at the top level and never inside loops, conditions, or nested functions.
Wrong Way:
```javascript
const MyComponent = () => {
if (someCondition) {
const [state, setState] = useState(0); // This will break the Rules of Hooks
}
// logic...
};
```
Right Way:
```javascript
const MyComponent = () => {
const [state, setState] = useState(0);
if (someCondition) {
// use state
}
// logic...
};
```
**4. Keep Hooks Simple and Readable**
Break down complex logic into smaller, composable Hooks.
Complex Hook:
```javascript
const useComplexLogic = () => {
const [state1, setState1] = useState(0);
const [state2, setState2] = useState('');
useEffect(() => {
// some complex logic
}, [state1, state2]);
};
```
Simplified with Custom Hooks:
```javascript
const useState1 = () => {
const [state1, setState1] = useState(0);
useEffect(() => {
// logic for state1
}, [state1]);
return [state1, setState1];
};
const useState2 = () => {
const [state2, setState2] = useState('');
useEffect(() => {
// logic for state2
}, [state2]);
return [state2, setState2];
};
const useComplexLogic = () => {
const [state1, setState1] = useState1();
const [state2, setState2] = useState2();
};
```
**5. Separate Concerns with Custom Hooks**
Encapsulate reusable logic in custom Hooks.
Custom Hook Example:
```javascript
const useFetch = (url) => {
const [data, setData] = useState(null);
const [loading, setLoading] = useState(true);
useEffect(() => {
fetch(url)
.then(response => response.json())
.then(data => {
setData(data);
setLoading(false);
});
}, [url]);
return { data, loading };
};
```
```javascript
const MyComponent = () => {
const { data, loading } = useFetch('https://api.example.com/data');
if (loading) return <p>Loading...</p>;
return <div>{data}</div>;
};
```
**6. Optimize Performance**
Use useMemo and useCallback to optimize performance and avoid unnecessary re-renders.
Using useMemo and useCallback:
```javascript
const MyComponent = ({ items }) => {
const [count, setCount] = useState(0);
const expensiveCalculation = useMemo(() => {
return items.reduce((acc, item) => acc + item.value, 0);
}, [items]);
const increment = useCallback(() => {
setCount(count + 1);
}, [count]);
return (
<div>
<p>Count: {count}</p>
<p>Sum: {expensiveCalculation}</p>
<button onClick={increment}>Increment</button>
</div>
);
};
```
**7. Leverage useEffect Wisely**
Manage side effects properly with useEffect.
Data Fetching with Cleanup:
```javascript
const MyComponent = () => {
const [data, setData] = useState(null);
useEffect(() => {
let isMounted = true;
fetch('https://api.example.com/data')
.then(response => response.json())
.then(data => {
if (isMounted) setData(data);
});
return () => {
isMounted = false; // Cleanup
};
}, []);
return <div>{data ? data : 'Loading...'}</div>;
};
```
**Conclusion**
React Hooks have revolutionized the way we write React components, offering a more elegant and functional approach to state management and side effects. By following best practices and leveraging the full potential of Hooks, you can write cleaner, more maintainable code and unlock new levels of productivity in your React development journey. Embrace the power of Hooks, but remember to use them wisely and responsibly to reap their full benefits. Happy hooking!
| shantih_palani |
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Trust your intuition; skepticism towards deals that appear overly advantageous or sellers who raise red flags is warranted. It is always wise to prioritize caution and explore alternative avenues if uncertainties arise.\n\nConclusion\nEnhance your online financial transactions with verified Cash App accounts, a secure and convenient option for all individuals. By purchasing these accounts, you can access exclusive features, benefit from higher transaction limits, and enjoy enhanced protection against fraudulent activities. Streamline your financial interactions and experience peace of mind knowing your transactions are secure and efficient with verified Cash App accounts.\n\nChoose a trusted provider when acquiring accounts to guarantee legitimacy and reliability. In an era where Cash App is increasingly favored for financial transactions, possessing a verified account offers users peace of mind and ease in managing their finances. Make informed decisions to safeguard your financial assets and streamline your personal transactions effectively.\n\nContact Us / 24 Hours Reply\nTelegram:dmhelpshop\nWhatsApp: +1 (980) 277-2786\nSkype:dmhelpshop\nEmail:dmhelpshop@gmail.com" | amibdsjgncs |
1,870,650 | What makes workday human capital management testing so important | One of the most essential things that promote a company’s efficient functioning in the dynamic... | 0 | 2024-05-30T17:37:27 | https://www.openlearning.com/u/whatmakesworkdayhumancapita-sc3385/ | workday, human, capital, management | 
One of the most essential things that promote a company’s efficient functioning in the dynamic business environment is high-quality human capital management. An enterprise cloud applications platform, Workday, is software that provides a full Human Capital Management solution. The workday human capital management learning curve and HR processes are fully automated. However, in this system; no one can even think about the testing environment's stability and the testing environment's performance. Therefore, the converter factory has a few words to say about Workday HCM.
**The importance of data integrity**
The HCM system’s main purpose is to manage the private and sensitive data of employees, including personal information, compensation records, and performances, among many others. When such data’s integrity is compromised, it poses a risk of a compliance incident, a lawsuit, bad morale, and so forth, as earlier identified. Therefore, the testing of the Workday HCM system ensures the integrity of data capture, processing, and storage, hence ensuring the safety of the organisation’s risk and potential liability.
**Ensuring seamless integration**
Given that HCM is often integrated with other systems in the organisation like payroll, time and attendance, and talent management applications, several rounds of rigorous testing will be necessary throughout these processes. Without proper and adequate testing, it can be challenging to know for sure that data is flowing through the systems correctly and consistently. This may cause operational inefficiencies while also increasing the risk of errors or complications from data fragmentation and inconsistency when data is entered or reconciled manually.
**Validating business processes**
The Workday HCM system is an enactment system of many HR processes, such as recruitment, induction, performance assessment, compensation management, and other related processes. One function that must be tested is business processes to ensure that they operate in the right ways and follow the rules and guidelines of the company. In fact, the testing of the processes enables the organisation to detect normalcy, the non-productivity area, and the bottleneck of the system, which improves the function of HRM and the experience of the workers.
**Enhancing user experience**
Workday HCM is a user-based application, and since its daily activities are based on employees, managers, and HR staff, these are its users. Therefore, it is important to test it to ensure that the application’s user interface and experience are convenient, interesting, and easy to navigate. A comprehensively tested and designed UI facilitates the application’s implementation, saving on training costs and minimising the need for other resources, which increases productivity.
**Ensuring compliance and security**
Given the nature of the sensitive employee information handled by the Workday HCM system, Workday HCM is expected to abide by several legal and regulatory requirements, including data privacy laws, labour laws, and standards set by specific industry sectors. Testing is, therefore, essential in guaranteeing that workday HCM is compliant with the legal and regulatory requirements and that the security measures put in place safeguard employees’ information against unauthorised access, breach, or misuse.
**Conclusion**
Protect your Workday HCM investment with intelligent test automation from Opkey. Our AI-powered platform guarantees full testing to protect you from risks like technical bugs, data mishaps, and adoption issues. Finally, when deploying a new Workday upgrade or customization, you can rest assured that its most important activities, whether recruiting or payroll, are validated. Do not be slammed with costly charges and a tarnished reputation due to untested changes. Opkey easily integrates with Workday to make testing easy and quick, ensuring high-quality outcomes throughout. Mitigate risks to your operations, finances, and brand reputation – Opkey is the best Workday testing program available. | rohitbhandari102 |
1,870,647 | Migrating a SQLite3 Database to PostgreSQL in Dokku | Migrating a SQLite3 database to PostgreSQL in a Dokku-managed environment involves several steps.... | 0 | 2024-05-30T17:35:36 | https://dev.to/swanny85/migrating-a-sqlite3-database-to-postgresql-in-dokku-22j0 | dokku, sqlite3, postgres, rails | Migrating a SQLite3 database to PostgreSQL in a Dokku-managed environment involves several steps. This guide will walk you through the entire process, ensuring a smooth transition from SQLite3 to PostgreSQL.
## **Prerequisites**
- Dokku installed and running
- PostgreSQL service set up in Dokku
- **`pgloader`** installed on your main server
- Access to your SQLite3 database file
## **Step-by-Step Guide**
### **1. Find the Location of the SQLite3 Database File**
First, identify where the SQLite3 database file is stored. Use the following Dokku command to find the storage location:
```bash
dokku storage:report <your_app_name>
```
This command will display information about the persistent storage used by your application. For example:
```bash
=====> webapp storage information
Storage build mounts:
Storage deploy mounts: -v /var/lib/dokku/data/storage/webapp:/rails/storage
Storage run mounts: -v /var/lib/dokku/data/storage/webapp:/rails/storage
```
In this example, the SQLite3 database file is located in **`/var/lib/dokku/data/storage/webapp`**.
### **2. Install `pgloader` on Your Main Server**
If **`pgloader`** is not already installed, you can install it using the following command:
```bash
sudo apt-get update
sudo apt-get install pgloader
```
### **3. Retrieve PostgreSQL Connection Information**
Get the connection details for your PostgreSQL service. Run the following command to get the necessary information:
```bash
dokku postgres:info <your_postgres_service_name>
```
This command will provide details including the DSN, internal IP, and port. For example:
```swift
=====> production postgres service information
Config dir: /var/lib/dokku/services/postgres/production/data
Data dir: /var/lib/dokku/services/postgres/production/data
Dsn: postgres://postgres:<password>@dokku-postgres-production:5432/production
Internal ip: 172.17.0.6
Status: running
Version: postgres:16.2
```
### **4. Run `pgloader`**
Use **`pgloader`** to migrate the SQLite3 database to PostgreSQL. Use the internal IP address instead of the hostname for the connection string.
```bash
pgloader sqlite:///var/lib/dokku/data/storage/webapp/production.sqlite3 postgres://postgres:<password>@172.17.0.6:5432/production
```
Replace **`/var/lib/dokku/data/storage/webapp/production.sqlite3`** with the path to your SQLite3 database file and **`<password>`** with the actual password.
### **5. Verify the Migration**
Connect to your PostgreSQL database and verify that the data was imported correctly.
1. **Connect to PostgreSQL**:
```bash
dokku postgres:connect <your_postgres_service_name>
```
2. **List Tables**:
```sql
\dt
```
3. **Check Data in Specific Tables**:
To inspect the data in the **`users`** table, for example:
```sql
SELECT * FROM users LIMIT 10;
```
4. **Check Data in the rails console.**
```bash
dokku run webapp
bin/rails console
``` | swanny85 |
1,870,648 | task 20 | 1) from selenium import webdriver from selenium.webdriver.common.by import By from... | 0 | 2024-05-30T17:34:31 | https://dev.to/abul_4693/task-20-44ho | 1) from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
import time
# Start a new browser session
driver = webdriver.Chrome()
try:
# Open the CoWIN website
driver.get("https://www.cowin.gov.in/")
# Wait for the page to load
time.sleep(2)
# Locate the "FAQ" anchor tag and click on it to open in a new window
faq_link = driver.find_element(By.XPATH, "//a[contains(text(),'FAQ')]")
faq_link.send_keys(Keys.CONTROL + Keys.RETURN)
# Switch to the newly opened window
driver.switch_to.window(driver.window_handles[1])
# Wait for the new page to load
time.sleep(2)
# Locate the "Partners" anchor tag and click on it to open in a new window
partners_link = driver.find_element(By.XPATH, "//a[contains(text(),'Partners')]")
partners_link.send_keys(Keys.CONTROL + Keys.RETURN)
# Switch to the newly opened window
driver.switch_to.window(driver.window_handles[2])
# Wait for the new page to load
time.sleep(2)
finally:
# Close all windows
driver.quit()
2) from selenium import webdriver
import time
# Start a new browser session
driver = webdriver.Chrome()
try:
# Open the CoWIN website
driver.get("https://www.cowin.gov.in/")
# Wait for the page to load
time.sleep(2)
# Locate the "FAQ" anchor tag and click on it to open in a new window
faq_link = driver.find_element_by_xpath("//a[contains(text(),'FAQ')]")
faq_link.click()
# Wait for the new window to open
time.sleep(2)
# Fetch and display the opened window handles
window_handles = driver.window_handles
print("Opened Windows / Frame IDs:")
for handle in window_handles:
print(handle)
finally:
# Close the browser session
driver.quit()
3) from selenium import webdriver
import time
# Start a new browser session
driver = webdriver.Chrome()
try:
# Open the CoWIN website
driver.get("https://www.cowin.gov.in/")
# Wait for the page to load
time.sleep(2)
# Locate the "FAQ" anchor tag and click on it to open in a new window
faq_link = driver.find_element_by_xpath("//a[contains(text(),'FAQ')]")
faq_link.click()
# Wait for the new window to open
time.sleep(2)
# Fetch the opened window handles
window_handles = driver.window_handles
# Switch to the newly opened window
driver.switch_to.window(window_handles[1])
# Close the FAQ window
driver.close()
# Switch back to the home page window
driver.switch_to.window(window_handles[0])
# Wait for a brief period
time.sleep(2)
# Locate the "Partners" anchor tag and click on it to open in a new window
partners_link = driver.find_element_by_xpath("//a[contains(text(),'Partners')]")
partners_link.click()
# Wait for the new window to open
time.sleep(2)
# Fetch the opened window handles
window_handles = driver.window_handles
# Switch to the newly opened window
driver.switch_to.window(window_handles[1])
# Close the Partners window
driver.close()
# Switch back to the home page window
driver.switch_to.window(window_handles[0])
finally:
# Close the browser session
driver.quit()
| abul_4693 | |
1,870,646 | HOW TO SECURE A WINDOWS SERVER WITH IIS AND AZURE NETWORK SECURITY FEATURES | In today's digital landscape, ensuring the security of your network's infrastructure is paramount.... | 0 | 2024-05-30T17:30:35 | https://dev.to/droz79/how-to-secure-a-windows-server-with-iis-and-azure-network-security-features-1g8i | iis, webserver, cloudcomputing, azure | In today's digital landscape, ensuring the security of your network's infrastructure is paramount. With the increasing prevalence of cyber threats, it's crucial to implement robust security measures to protect your assets and data. In this blog post, we'll walk through the steps of setting up a Windows Server with Internet Information Services (IIS) installed, and then we'll enhance its security using Azure's network security features.
**Step 1: Installing IIS on the Windows Server**
The first step in setting up our environment is to install Internet Information Services (IIS) on our Windows Server. IIS is a flexible and scalable web server that provides a secure and reliable platform for hosting websites and web applications.
To install IIS on the server, follow these steps:
- Log in to your Windows Server.
- Open Server Manager.
- Click on "Manage" and then select "Add Roles and Features."
- In the Add Roles and Features Wizard, click "Next" until you reach the Server Roles section.
- Check the box next to "Web Server (IIS)" and click "Next" to install the required features.
- Follow the on-screen instructions to complete the installation.
**Step 2: Creating an Application Security Group**
Next, we'll create an Application Security Group (ASG) in the same region as our server. ASGs allow us to define network security policies based on the application workloads rather than individual IP addresses.
To create an ASG, follow these steps:
- Log in to the Azure portal.
- Navigate to the Networking section and select "Application security groups."
- Click on "Add" and provide the necessary details, such as name and region, for the ASG. In the example below, we want to create an ASG named AndrosServer-ASG.
- Once the ASG is created, you can associate it with the appropriate resources, such as virtual machines or subnets, to define security rules.
**Step 3: Adding Inbound Rules to the Server's Network Security Group**
Now, let's add inbound rules to the Network Security Group (NSG) associated with our server. NSGs act as a basic firewall to control traffic to and from network interfaces in Azure.
To add inbound rules to the NSG, follow these steps:
- Navigate to the Networking section in the Azure portal and select "Network security groups."
- Find the NSG associated with your server and click on it. In the example below, the associated NSG is ServerA-nsg.
- In the NSG's settings, select "Inbound security rules" and click on "Add."
- Create a rule to allow traffic on port 80 (HTTP) and port 443 (HTTPS) from the desired source IP ranges or Application Security Groups.
- Save the changes to apply the new inbound rules.
**Step 4: Creating and Attaching a Firewall to the Server's VNet**
To further enhance the security of our environment, we'll create a firewall and attach it to the server's Virtual Network (VNet). This firewall will provide additional layers of protection against malicious threats.
To create and attach a firewall to the VNet, follow these steps:
- Navigate to the Networking section in the Azure portal and select "Firewalls."
- Click on "Add" to create a new firewall resource.
- Configure the firewall settings, such as name, region, and firewall type.
- Once the firewall is created, navigate to the Virtual Network section and select the VNet associated with your server.
- In the VNet's settings, select "Firewall" and click on "Attach."
- Choose the newly created firewall from the list and complete the attachment process.
**Step 5: Testing Connectivity**
Finally, let's test the connectivity to our server by copying its public IP address into a web browser.
If the setup is successful and the security configurations are applied correctly, you should be able to access the server's IIS landing page without any issues.
**Conclusion**
By following these steps and leveraging Azure's network security features, you can effectively secure your Windows Server with IIS installed. From configuring inbound rules to creating firewalls, each step plays a crucial role in safeguarding your environment from potential threats. With a proactive approach to security, you can mitigate risks and ensure the integrity of your network infrastructure.
| droz79 |
1,870,643 | Unveiling the Allure of Mykonos: A Greek Island Parad | Introduction Welcome to Mykonos, the epitome of Greek island charm, where azure waters meet pristine... | 0 | 2024-05-30T17:28:41 | https://dev.to/travelgo/unveiling-the-allure-of-mykonos-a-greek-island-parad-25a4 | mykonos, greece, travel, trip | <p><strong class="markup--strong markup--p-strong">Introduction</strong></p><p class="graf graf--p" name="1155">Welcome to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a>, the epitome of Greek island charm, where azure waters meet pristine white sands, and vibrant nightlife beckons beneath the Mediterranean stars. Nestled in the heart of the Cyclades archipelago, this enchanting island captivates visitors with its iconic windmills, labyrinthine streets, and cosmopolitan atmosphere. Join us on a virtual journey as we explore the timeless beauty and irresistible allure of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a>, a destination that promises unforgettable experiences and cherished memories.</p><p class="graf graf--p graf--empty" name="bc85"><br /></p><figure class="graf graf--figure" name="a817"><img class="graf-image" data-height="667" data-image-id="0*a_4_gYQySblf-Bf6" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*a_4_gYQySblf-Bf6" /></figure><p class="graf graf--p" name="20a1"><strong class="markup--strong markup--p-strong">Sun-Kissed Beaches and Turquoise Waters — SEO: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a><strong class="markup--strong markup--p-strong"> beaches, Greek islands, beach vacations”</strong></p><p class="graf graf--p" name="3571"><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a> is blessed with some of the most breathtaking beaches in the Aegean, each offering its own unique charm and allure. From the vibrant party atmosphere of Paradise Beach to the serene tranquility of Agios Ioannis, there’s a beach to suit every mood and preference. Spend your days basking in the Mediterranean sun, swimming in the crystal-clear waters, or indulging in thrilling water sports such as windsurfing, jet skiing, and parasailing. For a secluded escape, venture off the beaten path to the hidden coves and secret beaches that dot the coastline, where you can unwind in privacy amidst stunning natural beauty.</p><p class="graf graf--p" name="7170"><strong class="markup--strong markup--p-strong">Chic Boutiques and Cosmopolitan Charm — SEO: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a><strong class="markup--strong markup--p-strong"> town, shopping, luxury travel”</strong></p><p class="graf graf--p graf--empty" name="c2bb"><br /></p><figure class="graf graf--figure" name="c5c2"><img class="graf-image" data-height="1500" data-image-id="0*ktcZ5lvfE6ufFuo8" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*ktcZ5lvfE6ufFuo8" /></figure><p class="graf graf--p" name="2da8">Explore the charming streets of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a> Town, where whitewashed buildings adorned with vibrant bougainvillea create a picture-perfect backdrop for a day of leisurely exploration. Lose yourself in the maze of narrow alleyways, boutique shops, and art galleries, where you’ll discover unique treasures and souvenirs to cherish forever. Indulge in a spot of luxury shopping at high-end designer boutiques or pick up authentic handicrafts and local specialties from quaint souvenir shops. After a day of shopping, unwind at a stylish cafe or cocktail bar, where you can sip on refreshing drinks and soak up the island’s cosmopolitan atmosphere.</p><p class="graf graf--p" name="ff07"><strong class="markup--strong markup--p-strong">Legendary Nightlife and Sunset Soirees — SEO: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a><strong class="markup--strong markup--p-strong"> nightlife, partying, sunset views”</strong></p><p class="graf graf--p graf--empty" name="7a72"><br /></p><figure class="graf graf--figure" name="9430"><img class="graf-image" data-height="750" data-image-id="0*y_PX5zO6qL-EWJeW" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*y_PX5zO6qL-EWJeW" /></figure><p class="graf graf--p" name="842b">As the sun sets over the Aegean Sea, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a> transforms into a playground for the party elite, with legendary nightlife venues and beach clubs that rival the best in the world. Dance the night away beneath the stars at iconic clubs such as Cavo Paradiso and Scorpios, where world-class DJs spin pulsating beats until the early hours of the morning. Alternatively, enjoy a more laid-back evening at one of the island’s beachfront tavernas or cocktail bars, where you can sip on signature cocktails and enjoy breathtaking views of the sunset over the shimmering sea.</p><p class="graf graf--p" name="376f"><strong class="markup--strong markup--p-strong">Cultural Riches and Timeless Traditions — SEO: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a><strong class="markup--strong markup--p-strong"> culture, history, traditional Greek architecture”</strong></p><h4 class="graf graf--h4" name="8510"><a class="markup--anchor markup--h4-anchor" data-href="https://ttravelgoo.blogspot.com/" href="https://ttravelgoo.blogspot.com/" rel="noopener" target="_blank"><strong class="markup--strong markup--h4-strong">Visit our website for more offers!</strong></a></h4><p class="graf graf--p graf--empty" name="6eef"><br /></p><p class="graf graf--p" name="149c">Despite its reputation as a party paradise, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a> is also steeped in rich history and timeless traditions that date back centuries. Explore the island’s cultural heritage at the Archaeological Museum of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a>, where ancient artifacts and archaeological finds provide insight into <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a>’ storied past. Wander through the narrow streets of the picturesque village of Ano Mera, where traditional whitewashed buildings and charming churches offer a glimpse into authentic Greek island life. Don’t miss the opportunity to visit the iconic windmills of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a>, which have become a symbol of the island’s cultural heritage and architectural charm.</p><p class="graf graf--p" name="d963"><strong class="markup--strong markup--p-strong">Planning Your Mykonos Adventure — SEO: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a><strong class="markup--strong markup--p-strong"> travel tips, Greek island vacation, best time to visit Mykonos”</strong></p><p class="graf graf--p" name="2b25"><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank"><strong class="markup--strong markup--p-strong">Click here for the best offers at Hotels!</strong></a></p><p class="graf graf--p" name="b5b5">Whether you’re seeking sun-drenched beaches, vibrant nightlife, or rich cultural experiences, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/mykonos.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Mykonos</a> offers an unforgettable escape that will leave you enchanted and longing for more. With its stunning natural beauty, cosmopolitan charm, and legendary hospitality, this Greek island paradise is a destination like no other. So pack your bags, book your ticket, and prepare to embark on a journey to Mykonos, where dreams become reality and memories are made to last a lifetime.</p> | travelgo |
1,870,642 | Retaining Top Talent: A Comprehensive Guide for Recruitment Professionals Using Strategic Recruitment Techniques | In the fiercely competitive landscape of modern business, one of the most significant challenges... | 0 | 2024-05-30T17:28:12 | https://dev.to/demo_demo_60437eea92a126c/retaining-top-talent-a-comprehensive-guide-for-recruitment-professionals-3eh1 | hrconsulting, recruitment, hrstaffingservices | In the fiercely competitive landscape of modern business, one of the most significant challenges facing organizations is retaining their top talent. In an era where attracting skilled individuals is challenging enough, keeping them engaged and motivated for the long haul is essential for sustained success.
Let’s explore some effective strategies for retaining top talent:
Create a Positive Work Environment: Foster a culture that values employee well-being, diversity, equity, and inclusion. Encourage open communication, provide opportunities for professional development, and recognize and reward employees’ contributions.
Offer Competitive Compensation and Benefits: Ensure that your organization’s compensation packages are competitive within the industry. Additionally, provide benefits such as healthcare, retirement plans, and work-life balance initiatives to attract and retain top talent.
Provide Opportunities for Growth: Top performers are often driven by opportunities for advancement and career growth. Offer clear paths for career progression, provide ongoing training and development opportunities, and support employees in pursuing their professional goals.
Promote Work-Life Balance: Encourage a healthy work-life balance by offering flexible work arrangements, paid time off, and support for employees’ personal needs. Respect boundaries and discourage overworking to prevent burnout.
Recognize and Reward Performance: Acknowledge and reward employees for their hard work and achievements. Whether through monetary incentives, promotions, or public recognition, demonstrating appreciation fosters loyalty and motivation.
Offer Mentorship and Support: Pair employees with mentors who can provide guidance, support, and feedback as they navigate their careers within the organization. Mentorship programs not only facilitate professional growth but also foster a sense of belonging and community.
Conduct Stay Interviews: Regularly check in with employees to understand their needs, concerns, and motivations. Conducting stay interviews allows you to proactively address potential issues before they escalate and demonstrates your commitment to employee satisfaction.
Build Strong Relationships: Encourage team bonding activities, collaboration, and camaraderie among employees. Strong interpersonal relationships can enhance job satisfaction and loyalty to the organization.
Stay Competitive in the Market: Keep abreast of industry trends, market conditions, and competitors’ strategies to ensure your organization remains attractive to top talent. Continuously assess and update your retention strategies to stay ahead of the curve.
Exit Interviews and Feedback: When employees do decide to leave, conduct exit interviews to gather valuable feedback on their reasons for departure. Use this information to identify areas for improvement and make necessary changes to enhance retention in the future.
Conclusion
Retaining top talent is not a one-time task but an ongoing commitment that requires proactive effort and strategic planning. By creating a positive work environment, offering competitive compensation and benefits, providing opportunities for growth, and fostering strong relationships, recruitment professionals can significantly increase their organization’s ability to retain top talent. Remember, investing in employee retention not only preserves valuable resources but also strengthens the organization’s reputation and long-term success in the competitive marketplace. Additionally, leveraging social media recruiting strategies can enhance your ability to attract and retain high-quality candidates by reaching a broader audience and engaging with potential hires in a more dynamic and interactive way.
Kindly Visit URL: https://www.linkedin.com/company/ananta-resource-management/
#TalentRetention #BusinessSuccess #RecruitmentStrategies #EmployeeEngagement #WorkLifeBalance #CareerGrowth #CompanyCulture #Mentorship #ananta | demo_demo_60437eea92a126c |
1,870,641 | Exploring addEventListeners | Hey, my name is Daniel and I'm a beginner at all this coding stuff. I'm currently enrolled in... | 0 | 2024-05-30T17:24:39 | https://dev.to/daniel_trejo14/exploring-addeventlisteners-28lj | Hey, my name is Daniel and I'm a beginner at all this coding stuff. I'm currently enrolled in Flatiron School for Software Engineer. The first phase was predominantly on JavaScript and it already caught my interest. There are so many things you can do with JavaScript. There's iterations, variables, scope, and the one I'm going to be talking about, Events. Events where there first subject I really thought I grasp almost fully and that was a good feeling on it's own.
At first it was a lot to try and take in at once but after a couple times implementing it into my code for project, labs, and challenges. It really helped get it into prospective for me. It peaked my interest the most because the code itself made sense on it's own. For example, if I were to have something in html with the id of Search, if I wanna select that specific id and add a eventlistener to it, I would use either,
`document.querySelector("#search")`
or
`document.getElementById("search")`
Both roughly do the same things, however that have a slight difference as well. querySelector selects the first element in the DOM that matches the specified CSS selector. It is more versatile then getElementById however it is lest straightforward a little slower. Using getElementById is more straightforward and it's generally faster when specifically selecting id's. To add an event to the `id="search"` You would follow
`document.getElementById`
with
` document.getElementById("search").addEventListener("click", function() {
alert("I've been cliked!");
});
`
The addEventListener piece is giving the search id an event and in our case it's a click event. Now when we click on whatever we have as our search, either a 🔍 or a search button. It will send an alert to the user with whatever you put for the alert to say.
There are tons of different events that you can use like:
- mouseover
- click
- key(any direction)
and so many more that it would take awhile to list them all out here but the fact that there are so many intrigues me. It means that I will constantly be learning and that actually excites me. I would love to pursue as many of those events that I can and not just those but all of coding. I tried so many times to find something that actually interests me and finally I have a profession that actually excites me to learn about.
//Information on eventlisteners
https://www.w3schools.com/js/js_htmldom_eventlistener.asp
| daniel_trejo14 | |
1,870,639 | task 7 | 1) import requests class Country: def init(self, name, capital, population, area, languages): ... | 0 | 2024-05-30T17:21:04 | https://dev.to/abul_4693/task-7-k7b | 1) import requests
class Country:
def __init__(self, name, capital, population, area, languages):
self.name = name
self.capital = capital
self.population = population
self.area = area
self.languages = languages
def display_info(self):
print(f"Country: {self.name}")
print(f"Capital: {self.capital}")
print(f"Population: {self.population}")
print(f"Area: {self.area} square kilometers")
print("Languages:")
for lang in self.languages:
print(f"- {lang}")
print()
class CountryInfoFetcher:
def fetch_countries_info(self):
try:
response = requests.get("https://restcountries.com/v3.1/all")
data = response.json()
return data
except requests.RequestException as e:
print("Error fetching country information:", e)
return []
def display_countries_info(self, countries):
for country_data in countries:
country = self.create_country_object(country_data)
country.display_info()
def create_country_object(self, country_data):
name = country_data.get("name", "N/A")
capital = country_data.get("capital", "N/A")
population = country_data.get("population", "N/A")
area = country_data.get("area", "N/A")
languages = country_data.get("languages", [])
return Country(name, capital, population, area, languages)
if __name__ == "__main__":
info_fetcher = CountryInfoFetcher()
countries_info = info_fetcher.fetch_countries_info()
info_fetcher.display_countries_info(countries_info)
2)import requests
class CountryInfoFetcher:
def __init__(self, url):
self.url = url
def fetch_countries_info(self):
try:
response = requests.get(self.url)
data = response.json()
return data
except requests.RequestException as e:
print("Error fetching country information:", e)
return []
def display_countries_info(self, countries):
for country_data in countries:
self.display_country_info(country_data)
def display_country_info(self, country_data):
name = country_data.get("name", "N/A")
capital = country_data.get("capital", "N/A")
population = country_data.get("population", "N/A")
area = country_data.get("area", "N/A")
languages = country_data.get("languages", [])
print(f"Country: {name}")
print(f"Capital: {capital}")
print(f"Population: {population}")
print(f"Area: {area} square kilometers")
print("Languages:")
for lang in languages:
print(f"- {lang}")
print()
if __name__ == "__main__":
url = "https://restcountries.com/v3.1/all"
info_fetcher = CountryInfoFetcher(url)
countries_info = info_fetcher.fetch_countries_info()
info_fetcher.display_countries_info(countries_info)
3)import requests
class CountryInfoFetcher:
def __init__(self, url):
self.url = url
def fetch_json_data(self):
try:
response = requests.get(self.url)
data = response.json()
return data
except requests.RequestException as e:
print("Error fetching JSON data:", e)
return None
if __name__ == "__main__":
url = "https://restcountries.com/v3.1/all"
info_fetcher = CountryInfoFetcher(url)
json_data = info_fetcher.fetch_json_data()
if json_data:
print(json_data)
4) import requests
class CountryInfoFetcher:
def __init__(self, url):
self.url = url
def fetch_countries_info(self):
try:
response = requests.get(self.url)
data = response.json()
return data
except requests.RequestException as e:
print("Error fetching country information:", e)
return None
def display_country_info(self, countries):
for country_data in countries:
name = country_data.get("name", "N/A")
currencies = country_data.get("currencies", [])
currency_symbols = [currency.get("symbol", "N/A") for currency in currencies]
print(f"Country: {name}")
print("Currency Symbols:", ", ".join(currency_symbols))
print()
if __name__ == "__main__":
url = "https://restcountries.com/v3.1/all"
info_fetcher = CountryInfoFetcher(url)
countries_info = info_fetcher.fetch_countries_info()
if countries_info:
info_fetcher.display_country_info(countries_info)
5)import requests
class CountryInfoFetcher:
def __init__(self, url):
self.url = url
def fetch_countries_info(self):
try:
response = requests.get(self.url)
data = response.json()
return data
except requests.RequestException as e:
print("Error fetching country information:", e)
return None
def display_countries_with_dollar_currency(self, countries):
dollar_countries = []
for country_data in countries:
name = country_data.get("name", "N/A")
currencies = country_data.get("currencies", [])
currency_names = [currency.get("name", "") for currency in currencies]
if "DOLLAR" in currency_names:
dollar_countries.append(name)
if dollar_countries:
print("Countries with DOLLAR as currency:")
for country in dollar_countries:
print(country)
else:
print("No countries found with DOLLAR as currency.")
if __name__ == "__main__":
url = "https://restcountries.com/v3.1/all"
info_fetcher = CountryInfoFetcher(url)
countries_info = info_fetcher.fetch_countries_info()
if countries_info:
info_fetcher.display_countries_with_dollar_currency(countries_info)
6) import requests
class CountryInfoFetcher:
def __init__(self, url):
self.url = url
def fetch_countries_info(self):
try:
response = requests.get(self.url)
data = response.json()
return data
except requests.RequestException as e:
print("Error fetching country information:", e)
return None
def display_countries_with_euro_currency(self, countries):
euro_countries = []
for country_data in countries:
name = country_data.get("name", "N/A")
currencies = country_data.get("currencies", [])
for currency in currencies:
if "code" in currency and currency["code"] == "EUR":
euro_countries.append(name)
break
if euro_countries:
print("Countries with EURO as currency:")
for country in euro_countries:
print(country)
else:
print("No countries found with EURO as currency.")
if __name__ == "__main__":
url = "https://restcountries.com/v3.1/all"
info_fetcher = CountryInfoFetcher(url)
countries_info = info_fetcher.fetch_countries_info()
if countries_info:
info_fetcher.display_countries_with_euro_currency(countries_info)
B)
1)import requests
class CountryInfoFetcher:
def __init__(self, url):
self.url = url
def fetch_countries_info(self):
try:
response = requests.get(self.url)
data = response.json()
return data
except requests.RequestException as e:
print("Error fetching country information:", e)
return None
def display_countries_with_euro_currency(self, countries):
euro_countries = []
for country_data in countries:
name = country_data.get("name", "N/A")
currencies = country_data.get("currencies", [])
for currency in currencies:
if "code" in currency and currency["code"] == "EUR":
euro_countries.append(name)
break
if euro_countries:
print("Countries with EURO as currency:")
for country in euro_countries:
print(country)
else:
print("No countries found with EURO as currency.")
if __name__ == "__main__":
url = "https://restcountries.com/v3.1/all"
info_fetcher = CountryInfoFetcher(url)
countries_info = info_fetcher.fetch_countries_info()
if countries_info:
info_fetcher.display_countries_with_euro_currency(countries_info)
2) import requests
def fetch_breweries_by_state(state):
url = f"https://api.openbrewerydb.org/breweries?by_state={state}&per_page=50"
response = requests.get(url)
if response.status_code == 200:
return response.json()
else:
print(f"Failed to fetch breweries for {state}.")
return []
def count_breweries_in_states(states):
for state in states:
breweries = fetch_breweries_by_state(state)
brewery_count = len(breweries)
print(f"Number of breweries in {state}: {brewery_count}")
if __name__ == "__main__":
states = ['Alaska', 'Maine', 'New York']
count_breweries_in_states(states)
3) import requests
def fetch_breweries_by_state_and_city(state, city):
url = f"https://api.openbrewerydb.org/breweries?by_state={state}&by_city={city}&per_page=50"
response = requests.get(url)
if response.status_code == 200:
return response.json()
else:
print(f"Failed to fetch breweries for {city}, {state}.")
return []
def count_brewery_types_in_cities(states):
for state in states:
print(f"State: {state}")
cities = set()
breweries_count = 0
breweries_by_city = {}
# Fetch breweries for the state
breweries = fetch_breweries_by_state_and_city(state, "")
# Count the number of types of breweries in each city
for brewery in breweries:
city = brewery.get('city', 'Unknown')
if city not in cities:
cities.add(city)
breweries_by_city[city] = set()
brewery_type = brewery.get('brewery_type', 'Unknown')
breweries_by_city[city].add(brewery_type)
breweries_count += 1
# Print the count of types of breweries in each city
for city, types in breweries_by_city.items():
print(f"City: {city}, Number of Brewery Types: {len(types)}")
print(f"Total Breweries in {state}: {breweries_count}")
print()
if __name__ == "__main__":
states = ['Alaska', 'Maine', 'New York']
count_brewery_types_in_cities(states)
4)import requests
def fetch_breweries_by_state(state):
url = f"https://api.openbrewerydb.org/breweries?by_state={state}&per_page=50"
response = requests.get(url)
if response.status_code == 200:
return response.json()
else:
print(f"Failed to fetch breweries for {state}.")
return []
def count_and_list_breweries_with_websites_in_states(states):
for state in states:
print(f"State: {state}")
breweries = fetch_breweries_by_state(state)
breweries_with_websites = [brewery for brewery in breweries if brewery.get('website_url')]
brewery_count_with_websites = len(breweries_with_websites)
print(f"Number of Breweries with Websites in {state}: {brewery_count_with_websites}")
if breweries_with_websites:
print("Breweries with Websites:")
for brewery in breweries_with_websites:
print("-", brewery['name'])
print()
if __name__ == "__main__":
states = ['Alaska', 'Maine', 'New York']
count_and_list_breweries_with_websites_in_states(states)
| abul_4693 | |
1,870,591 | Routing in Umbraco Part 1: URL segments | If you have ever paid attention to the URL structure of nodes in Umbraco while going hard at your... | 27,570 | 2024-05-30T17:19:44 | https://dev.to/hartviglarsen/routing-in-umbraco-part-1-url-segments-4lmj | umbraco, dotnet, routing, cms | If you have ever paid attention to the URL structure of nodes in Umbraco while going hard at your various Umbraco endeavours, you might have noticed that URLs are generated based on a node's placement in the content tree followed by its name. Usually this poses no issue but what if you wanted to change how the URL is made?
Say, for example, that you have a blog and you would like the create date (year) of each post shown in the URL. How would you do this?
You _could_ use one of the [built-in property type aliases](https://docs.umbraco.com/umbraco-cms/reference/routing/routing-properties) such as _umbracoUrlName_, as Umbraco will use that property instead of the node's name for the URL segment:
_Textstring_ property with _umbracoUrlName_ as the alias:
New URL:
However, who wants to do this for each blog posts?
Luckily Umbraco has some tricks up its sleeve and allows you to easily change how URLs behave by using your own URL providers.
## Creating your own URL segment provider
Create a class that implements `IUrlSegmentProvider`. All the magic will take place in `GetUrlSegment()`:
```c#
using Umbraco.Cms.Core.Models;
using Umbraco.Cms.Core.Strings;
namespace Adventures;
public class BlogPostUrlSegmentProvider : IUrlSegmentProvider
{
private readonly IUrlSegmentProvider _segmentProvider;
public BlogPostUrlSegmentProvider(IShortStringHelper shortStringHelper)
{
_segmentProvider = new DefaultUrlSegmentProvider(shortStringHelper);
}
public string? GetUrlSegment(IContentBase content, string? culture = null)
{
// Do code
}
}
```
By using `_segmentProvider.GetUrlSegment(content, culture)` we can get the current URL segment for the given node and its culture.
In order to prepend the year of the blog post to the URL, all you have to do is make sure `content.CreateDate.Year` is part the string that is returned.
`CreateDate` is used for simplicity's sake. Typically you would want a separate `DateTime` property to assign a _publish_ date. Otherwise, a post that you started in December of a given year but is not published until January will have the previous year in the URL - and you might not want that :-)
```c#
public string? GetUrlSegment(IContentBase content, string? culture = null)
{
if (content.ContentType.Alias != "blogPost")
return null;
var segment = _segmentProvider.GetUrlSegment(content, culture);
return $"{content.CreateDate.Year}-{segment}";
}
```
With the segment provider in place you can now register it:
```c#
using Umbraco.Cms.Core.Composing;
namespace Adventures;
public class BlogPostUrlComposer : IComposer
{
public void Compose(IUmbracoBuilder builder)
{
builder.UrlSegmentProviders()
.Insert<BlogPostUrlSegmentProvider>();
}
}
```
If you have previously worked with custom URLs you might have experience with your own Content Finders. These are not required when only the segment is changed.
Build your solution and republish a relevant node in Umbraco and you will have an updated URL:
oh.. and if the node has previously been published, Umbraco will automatically created a redirect. Neat :-)
| hartviglarsen |
1,869,518 | Using Indexing To Optimize MongoDB Performance | Introduction Every system must have its database performance optimized in order to... | 0 | 2024-05-30T17:16:03 | https://dev.to/irfat7/using-indexing-to-optimize-mongodb-performance-4b40 | mongodb, database, development, programming | ### Introduction
Every system must have its database performance **optimized** in order to function properly. It improves the app's overall performance. When data grows, an efficient database system can handle the extra load without experiencing noticeable slowdowns and process data much more quickly and improve user experience.
### What is Indexing?
Database indexing is a technique for improving it's performance by speeding up **read** operations. It is similar to the indexes used in books. It efficiently guides database queries, resulting in overall improved performance.
### Why Indexing?
Indexing can be used to improve overall performance of MongoDB. Indexes **decrease** the amount of data that query operations must process, which **increases** the performance of read operations. This lessens the effort involved in responding to requests in MongoDB. For this tutorial, we'll look at a simple MongoDB collection called `students`, which has the following field in each document.
```javascript
{
_id: ObjectId, //for this example we will consider a simple number
name: string, //name of students
age: number, //age of students
}
```
Assume that the `students` collection contains the following documents.
| \_id | name | age | gender |
| ---- | ------- | --- | ------ |
| 1 | Alice | 25 | female |
| 2 | Bob | 30 | male |
| 3 | Charlie | 22 | male |
| 4 | David | 30 | male |
| 5 | Eve | 22 | female |
### Query Performance Without Indexing
Now, without indexing, let us find 'Eve' using the `db.students.find({name: 'Eve', age: 22}).explain('executionStats')` method. Here `explain('executionStats')` method provides information about the performance of the query and it returns following object:
```javascript
{
queryPlanner: {
...
winningPlan: {
stage: 'COLLSCAN',
...
}
},
executionStats: {
executionSuccess: true,
nReturned: 1,
executionTimeMillis: 0,
totalKeysExamined: 0,
totalDocsExamined: 5,
executionStages: {
stage: 'COLLSCAN',
...
},
...
},
...
}
```
- `queryPlanner.winningPlan.stage: 'COLLSCAN'` means this query did not use any indexing rather it performed a **collection scan** which is basically searching one document after another which is generally an expensive process.
- `executionStats.nReturned: 1` indicates that this query returned only 1 document.
- `executionStats.totalKeysExamined: 0` shows that this query is not using any indexing for search.
- `executionStats.totalDocsExamined: 5` indicates this query scanned total of **5 documents** i.e. entire collection is scanned.
### Query Performance With Indexing
Before creating an index let's find the current available indexes. To get the current indexes we can use `db.students.getIndexes()` method, it will return the following array:
```javascript
[ { v: 2, key: { _id: 1 }, name: '_id_' } ]
```
`key` means the `field name` based on which the indexing is created that means the *`_id` field is already indexed by default*. So, searching with `_id` already performed using an index.
Let's create index for `age` and `name` field of our collection where `age` will be in **ascending order** and `name` will be in **descending order**.
To create the index we can use `db.students.createIndex({age:1, name: -1})` `1` means ascending and `-1` means descending order. Calling the `getIndexes()` method again it will return the following array:
```javascript
[
{ v: 2, key: { _id: 1 }, name: '_id_' },
{ v: 2, key: { age: 1, name: -1 }, name: 'age_1_name_-1' }
]
```
New index with name `age_1_name_-1` is created.
> **Note:** Creating an index on the same field will throw an error. You need to *delete* the previous index using the [**db.collection.dropIndex()**](https://www.mongodb.com/docs/manual/reference/method/db.collection.dropIndex/) method first.
Now, let's run the query `db.students.find({name: 'Eve', age: 22}).explain('executionStats')` again and it returns the following result:
```javascript
{
queryPlanner: {
...
winningPlan: {
stage: 'FETCH',
inputStage: {
stage: 'IXSCAN',
keyPattern: { age: 1, name: -1 },
indexName: 'age_1_name_-1',
...
}
},
...
},
executionStats: {
executionSuccess: true,
nReturned: 1,
executionTimeMillis: 1,
totalKeysExamined: 1,
totalDocsExamined: 1,
executionStages: {
...
},
...
},
...
}
```
- `queryPlanner.winningPlan.inputStage.stage: 'IXSCAN'` indicates that this time it used **index scanning**.
- `executionStats.nReturned: 1` means this query returned 1 document.
- `executionStats.totalKeysExamined: 1` shows that this query is used **one key** for the execution of the query.
- `executionStats.totalDocsExamined: 1` means this query scanned **only one document** which previously was 5.
So, using index scanning made a huge improvement.
### How MongoDB IXScan Works
Similar to other databases, MongoDB employs [**B-trees**](https://www.programiz.com/dsa/b-tree) to store indexes. If a document has n number of collections then using `COLLSCAN` has complexity of `O(n)` since it needs to check all the documents for worst case on the other hand B-tree has **better** searching complexity which is `O(log n)`. Indexing scans the B-tree for the key and then returns the documents to which the key points. MongoDB indexing can be described in following steps:
1. **Initiating an Empty B-tree:** When you use the `createIndex()` method in MongoDB, an **empty B-tree** is created for the index. The B-tree is initially empty and will be filled out as documents are added to the collection.
2. **Updating the Tree Upon Insertion:** As documents are inserted into the collection, the B-tree index is updated to reflect these insertions. The B-tree is maintained in a balanced state to ensure efficient querying.
3. **Traversing the Tree for Queries:** When you execute a query that can utilize an index, MongoDB traverses the B-tree to find the **matching** documents efficiently. This traversal involves navigating the B-tree based on the values being queried. If the value is less than or equal to a node it will traverse to **left** subtree else **right** subtree.
4. **Leaf Nodes Pointing to Documents:** In a B-tree index, the leaf nodes typically contain **references** (pointers) to the actual documents in the collection that match the indexed values. This allows MongoDB to quickly locate the documents that satisfy the query conditions.
5. **Selecting Documents from Pointers:** When MongoDB finds leaf nodes containing pointers to documents, it retrieves those documents from the collection. These documents are then returned as query results.
The image below can help to summarize the entire process.
<p align="center">
<img src="https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dhwgtvbgmts3v429ivsa.png" alt="Image description">
<center><em>Fig: IXSCAN scan visualization</em></center>
<br>
</p>
> **Note:** In MongoDB, the internal structure of non-leaf nodes within B-tree indexes is determined by the MongoDB server **itself**. These non-leaf nodes serve as guides for queries, directing them towards the appropriate leaf nodes where the indexed data is stored.
#### Execution Of The Query Using COLLSCAN
<p align="center">
<img src="https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7jst91sa9lqpjwjqp448.png" alt="Image description">
<center><em>Fig: COLLSCAN execution</em></center>
<br>
</p>
#### Execution Of The Query Using IXSCAN
<p align="center">
<img src="https://dev-to-uploads.s3.amazonaws.com/uploads/articles/f2a1bns59d3933r4s299.png" alt="Image description">
<center><em>Fig: IXSCAN execution</em></center>
<br>
</p>
### Avoid Indexing When
- A collection has a **high** write-to-read ratio, and indexing are costly because each insert requires updating any indexes.
- For **smaller** databases, implementing indexing may not provide a substantial improvement in performance. The benefits of indexing become more apparent as the size of the database grows, but for smaller datasets, the performance gains might be minimal.
### Conclusion
Indexing is an excellent approach to improve the performance of your database. It enhances the user experience by making a system quicker. This can be accomplished by indexing the most frequently used fields of a collection. It is also crucial to note that indexing has its drawbacks. It demands more storage and processing. So, it's important to understand when to utilize it and when not to. | irfat7 |
1,870,372 | Ribbon Roofing LLC Cape Coral | Ribbon Roofing LLC in Cape Coral is your premier destination for top-quality roofing solutions. Our... | 0 | 2024-05-30T12:24:30 | https://dev.to/ribbonroofingfl/ribbon-roofing-llc-cape-coral-iii |
Ribbon Roofing LLC in Cape Coral is your premier destination for top-quality roofing solutions. Our expert team specializes in residential and commercial roofing services, including installations, repairs, and maintenance. With a focus on quality craftsmanship and exceptional customer service, we strive to exceed your expectations every step of the way. Whether you need a new roof for your home or a repair for your business property, we have the expertise and resources to deliver outstanding results. Trust Ribbon Roofing for reliable, durable, and cost-effective roofing solutions tailored to your specific needs. Contact us today to experience the superior service and craftsmanship that set Ribbon Roofing LLC apart.
Ribbon Roofing LLC Cape Coral
Address: [1009 NE 8th St, Cape Coral, FL 33909](https://www.google.com/maps?cid=14653021026102116535)
Phone: 239-789-6496
Website: [https://ribbonroofingfl.com/](https://ribbonroofingfl.com/)
Contact email: Gary@RibbonRoofingFL.com
Visit Us:
[Ribbon Roofing LLC Cape Coral Facebook](https://www.facebook.com/ribbonroofingfl)
[Ribbon Roofing LLC Cape Coral Instagram](https://www.instagram.com/ribbonroofingfl/)
[Ribbon Roofing LLC Cape Coral LinkedIn](https://www.linkedin.com/company/ribbon-roofing-fl/)
[Ribbon Roofing LLC Cape Coral Twitter](https://twitter.com/RibbonRoofingFl)
Service Areas:
Metal Roofing
Tile Roofing
Shingle Roofing
Flat Roofing
Roof Repairs | ribbonroofingfl | |
1,870,627 | What is copilot? | GitHub Copilot is an AI-powered code completion tool developed by GitHub in collaboration with... | 0 | 2024-05-30T17:14:00 | https://dev.to/pradnya_agrawal/what-is-copilot-4160 | generativeai, githubcopilot | GitHub Copilot is an AI-powered code completion tool developed by GitHub in collaboration with OpenAI. It's designed to assist developers by providing real-time code suggestions and helping automate various aspects of the coding process. Here’s a detailed look at GitHub Copilot:
**Overview**
**1. What is GitHub Copilot?**
- GitHub Copilot is an AI-based tool integrated into development environments to help write code faster and with fewer errors. It uses machine learning models, particularly those based on OpenAI’s Codex, to generate code suggestions.
**2. How Does it Work?**
- **Contextual Suggestions**: Copilot analyzes the code you’re currently working on and offers relevant suggestions. This can range from completing a single line of code to generating entire functions or boilerplate code.
- **Learning from Data**: It’s trained on a vast dataset of publicly available code from GitHub repositories, which allows it to understand and generate code in various programming languages and frameworks.
**Features**
**1. Autocomplete:**
- Provides intelligent autocomplete suggestions as you type, similar to how text prediction works in modern word processors.
**2. Code Generation:**
- Can generate larger blocks of code, such as entire functions or classes, based on comments or initial input from the developer.
**3. Documentation and Comment Understanding:**
- Understands natural language comments to generate code snippets that align with the described functionality.
**4. Multi-Language Support:**
- Supports a wide range of programming languages, including Python, JavaScript, TypeScript, Ruby, Go, and more.
**5. Context Awareness:**
- Recognizes the context of the code, such as the surrounding code structure and libraries in use, to provide more accurate suggestions.
**Benefits**
**1. Increased Productivity:**
- Helps developers write code faster by reducing the need to type repetitive or boilerplate code manually.
**2. Error Reduction:**
- Suggests syntactically correct code, which can help reduce common coding errors and improve code quality.
**3. Learning Aid:**
- Acts as an educational tool for new developers by suggesting best practices and coding patterns commonly used in the industry.
**4. Focus on Logic:**
- Allows developers to focus more on the logic and structure of their programs rather than getting bogged down by syntax and boilerplate code.
**Use Cases**
**1. Rapid Prototyping:**
- Quickly prototype new features or applications by generating foundational code structures.
**2. Code Refactoring:**
- Assist in refactoring existing codebases by suggesting improvements or more efficient coding practices.
**3. Learning New Languages:**
- Help developers familiarize themselves with new programming languages and frameworks by providing relevant code examples.
**4. Enhancing Code Reviews:**
- Improve the code review process by ensuring that common coding standards and practices are followed through consistent suggestions.
**Ethical and Practical Considerations**
**1. Data Privacy:**
- Since Copilot is trained on publicly available code, there are concerns about inadvertently suggesting copyrighted code snippets. GitHub has implemented measures to minimize this risk.
**2. Dependency on AI:**
- While Copilot is a powerful tool, developers should avoid becoming overly reliant on it. Understanding the code and its implications remains crucial.
**3. Quality of Suggestions:**
- The quality of suggestions can vary based on the context and complexity of the task. Developers should always review and verify the generated code.
**Conclusion**
GitHub Copilot represents a significant advancement in developer tools, leveraging the power of AI to enhance coding efficiency and effectiveness. While it offers numerous benefits, it’s important for developers to use it thoughtfully, ensuring that they maintain control over the coding process and validate the suggestions provided by the tool. As AI continues to evolve, tools like Copilot will likely become even more integral to software development practices, shaping the future of how we write and maintain code. | pradnya_agrawal |
1,870,626 | Matplotlib a powerful plotting library | Matplotlib is a powerful plotting library in Python widely used for creating visualizations in data... | 0 | 2024-05-30T17:13:06 | https://dev.to/samagra07/matplotlib-a-powerful-plotting-library-8ea | python, programming, learning, datascience | Matplotlib is a powerful plotting library in Python widely used for creating visualizations in data analysis and scientific computing. Its versatility and flexibility make it a popular choice among data scientists, researchers, and engineers. With Matplotlib, you can create a wide range of plots, including line plots, scatter plots, bar charts, histograms, and more. In this explanation, I'll cover the basics of Matplotlib, its key features, and provide Python code examples to illustrate its usage.
### Introduction to Matplotlib:
Matplotlib was initially developed by John D. Hunter in 2003 as a tool to create publication-quality plots in Python. Over the years, it has evolved into a comprehensive library with a rich set of features for creating static, interactive, and animated visualizations.
### Key Features:
1. **Simple Interface:** Matplotlib provides a simple and intuitive interface for creating plots. It is designed to work seamlessly with NumPy arrays, making it easy to visualize data stored in arrays.
2. **Customization:** Matplotlib offers extensive customization options to tailor the appearance of plots according to your needs. You can customize aspects such as colors, line styles, markers, fonts, and annotations.
3. **Support for Multiple Plot Types:** Matplotlib supports a wide range of plot types, including line plots, scatter plots, bar charts, histograms, pie charts, box plots, and more. This versatility allows you to create diverse visualizations for different types of data.
4. **Publication Quality:** Matplotlib is designed to produce high-quality plots suitable for publication in scientific journals and presentations. You can control various aspects of plot aesthetics to ensure that your visualizations meet publication standards.
5. **Integration with Jupyter Notebooks:** Matplotlib integrates seamlessly with Jupyter Notebooks, allowing you to create interactive plots directly within the notebook environment. This feature is particularly useful for exploratory data analysis and interactive storytelling.
### Basic Plotting with Matplotlib:
To get started with Matplotlib, you need to import the `matplotlib.pyplot` module, which provides a MATLAB-like interface for creating plots. Let's walk through some basic examples to illustrate how to create different types of plots using Matplotlib.
#### Example 1: Line Plot
```python
import matplotlib.pyplot as plt
import numpy as np
# Generate data
x = np.linspace(0, 10, 100)
y = np.sin(x)
# Create a line plot
plt.plot(x, y)
plt.xlabel('X-axis')
plt.ylabel('Y-axis')
plt.title('Line Plot')
plt.grid(True)
plt.show()
```
In this example, we generate a NumPy array `x` containing 100 evenly spaced values between 0 and 10. We then compute the sine of each value in `x` to get the corresponding `y` values. Finally, we use `plt.plot()` to create a line plot of `x` versus `y`, and we add labels, title, and grid lines using various `plt` functions.
#### Example 2: Scatter Plot
```python
# Generate random data
x = np.random.rand(100)
y = np.random.rand(100)
colors = np.random.rand(100)
sizes = 1000 * np.random.rand(100)
# Create a scatter plot
plt.scatter(x, y, c=colors, s=sizes, alpha=0.5)
plt.xlabel('X-axis')
plt.ylabel('Y-axis')
plt.title('Scatter Plot')
plt.show()
```
In this example, we generate random data for `x` and `y` coordinates, as well as colors and sizes for each point. We use `plt.scatter()` to create a scatter plot of `x` versus `y`, with points colored and sized according to the `colors` and `sizes` arrays, respectively.
#### Example 3: Bar Chart
```python
# Data
categories = ['A', 'B', 'C', 'D', 'E']
values = [20, 35, 30, 25, 40]
# Create a bar chart
plt.bar(categories, values)
plt.xlabel('Categories')
plt.ylabel('Values')
plt.title('Bar Chart')
plt.show()
```
In this example, we have a list of categories and corresponding values. We use `plt.bar()` to create a bar chart showing the distribution of values across different categories.
### Advanced Plot Customization:
Matplotlib provides numerous options for customizing the appearance of plots. You can control various aspects such as colors, line styles, markers, fonts, annotations, axis limits, and more. Let's explore some advanced customization techniques with examples.
#### Example 4: Customizing Line Plot
```python
# Generate data
x = np.linspace(0, 10, 100)
y1 = np.sin(x)
y2 = np.cos(x)
# Create a line plot with custom styles
plt.plot(x, y1, color='blue', linestyle='--', linewidth=2, label='sin(x)')
plt.plot(x, y2, color='red', linestyle='-', linewidth=2, label='cos(x)')
plt.xlabel('X-axis')
plt.ylabel('Y-axis')
plt.title('Customized Line Plot')
plt.legend()
plt.show()
```
In this example, we create a line plot with two curves: sine and cosine functions. We customize the line styles, colors, and widths using the `color`, `linestyle`, and `linewidth` parameters. We also add a legend to distinguish between the two curves.
#### Example 5: Adding Annotations
```python
# Create a scatter plot with annotations
plt.scatter(x, y, c=colors, s=sizes, alpha=0.5)
plt.xlabel('X-axis')
plt.ylabel('Y-axis')
plt.title('Scatter Plot with Annotations')
for i in range(len(x)):
plt.text(x[i], y[i], f'({x[i]:.2f}, {y[i]:.2f})', fontsize=8)
plt.show()
```
In this example, we add annotations to a scatter plot to display the coordinates of each point. We use `plt.text()` to add text annotations at the specified `(x, y)` coordinates for each point in the scatter plot.
### Conclusion:
Matplotlib is a powerful and versatile plotting library in Python that enables you to create a wide range of visualizations for data analysis and scientific computing. Its simple interface, extensive customization options, and support for multiple plot types make it an essential tool for anyone working with data in Python. Whether you're creating static plots for publication or interactive visualizations for exploration, Matplotlib provides the tools you need to effectively communicate your findings. | samagra07 |
1,870,625 | Boiled down: merge sort w/recursion | In my coding journey, I've encountered recursion many times and can only wrap my head around basic... | 0 | 2024-05-30T17:10:18 | https://dev.to/simon_mei_0de03b0b5a3299a/boiled-down-merge-sort-wrecursion-fj0 | webdev, javascript, beginners, learning | In my coding journey, I've encountered recursion many times and can only wrap my head around basic recursion algorithms like factorials and the Fibonacci sequence. When it comes to merge sort, I bang my head against the wall because while I understand the idea of it, when it comes down to the code, it just didn't make sense... until now...
I do feel that with recursion, it's an idea where you understand it better the more you see and work with it.
## Merge sort idea
This video explains extremely well how merge sort with recursion works: [Harvard CS50x lecture (watch until 1:58:33)](https://youtu.be/4oqjcKenCH8?t=6248).
The three basic steps are:
- Sort the left half of the list
- Sort the right half of the list
- Merge sorted halves
Okay, that's a lot of help... how do we sort the thing?!
We use a two-pointer system to compare the left and right halves.
Let's look at the code and then break it down:
```javascript
function mergeSort(list) {
if (list.length == 1) { // base case
return list;
}
// Get the midpoint to split the list into halves
let midpoint = Math.floor(list.length / 2);
let leftHalf = list.slice(0, midpoint);
let rightHalf = list.slice(midpoint);
/*
Recursive step which further splits halves down into smaller halves
until the base case
*/
let left = mergeSort(leftHalf);
let right = mergeSort(rightHalf);
// Left half pointer
let l = 0;
// Right half pointer
let r = 0;
// List pointer
let k = 0;
// Compare values to fill list
while (l < left.length && r < right.length) {
if (left[l] < right[r]) {
list[k] = left[l]
l++
k++
} else {
list[k] = right[r];
r++
k++
}
}
// This only works when only left half still contains elements
while (l < left.length) {
list[k] = left[l];
l++
k++
}
// This only works when only right half still contains elements
while (r < right.length) {
list[k] = right[r];
r++
k++
}
return list;
}
```
## Break down
### Base case
```javascript
if (list.length == 1) { // base case
return list;
}
```
This base case is crucial since it enables the rest of the recursion steps to work. Once we reach the base case, we can build up our sorted list.
Let's use a simple list to think about this: `[1, 5, 2, 3]`. When we get to the base case, we should have 4 pieces: `[1]`, `[5]`, `[2]`, and `[3]`.
### Recursive step (first look)
Now, if we look at the initial left half of `[1, 5, 2, 3]`, we have `[1, 5]`, which is also the step before we get to the base case.
```javascript
let left = mergeSort(leftHalf); // [1]
let right = mergeSort(rightHalf); // [5]
```
Now that we have our base cases returned, we can begin to sort them.
### Sort
We want to initialize a couple of pointers to help us keep track of elements from each half, and a pointer to keep track of where we are in the unsorted list.
```javascript
// Left half pointer
let l = 0;
// Right half pointer
let r = 0;
// List pointer
let k = 0;
```
Now let's sort and merge values into our list:
```javascript
// Compare values to fill list
while (l < left.length && r < right.length) {
if (left[l] < right[r]) {
list[k] = left[l]
l++
k++
} else {
list[k] = right[r];
r++
k++
}
}
```
Using our basic example, we are working with `[1]` (left half) and `[5]` (right half).
Notice, if we were merging a larger list, we might encounter a scenario where (for argument's sake) all elements from one half go into our list while the other half remains.
This is how we handle that:
```javascript
while (l < left.length) {
list[k] = left[l];
l++
k++
}
while (r < right.length) {
list[k] = right[r];
r++
k++
}
```
These loops only run when the pointer hasn't reached the end of its respective half.
Now, our `list` is equal to `[1, 5]`.
### Return and recursive step (second look)
We return this list to the previous recursive step...
Notice that while we've sorted `[1, 5]` on the left half, the algorithm was also busy sorting the right half, which should be `[2, 3]`.
This is how our code and values look:
```javascript
let left = mergeSort(leftHalf); // [1,5]
let right = mergeSort(rightHalf); // [2,3]
```
Now we run through our algorithm to sort and merge these two halves into a bigger list which is our final step, because we get `[1, 2, 3, 5]`.
## Time complexity
The time complexity to split our list into halves all the way down to the base case is logn, and the time complexity to merge them all back together is n, which means the time complexity for merge sort is nlogn.
## Thoughts
After taking a look at what I've written, I feel like this is what others have written and talked about, also. Haha. But writing this for myself really solidified the idea.
I hope this made some sense, bare with me as I'm still new at writing blogs, and I was never the best at English class. | simon_mei_0de03b0b5a3299a |
1,870,621 | Discover the Enchantment of Santorini: A Journey to the Jewel of the Aegean | Introduction Welcome to Santorini, the crown jewel of the Aegean Sea, where whitewashed buildings... | 0 | 2024-05-30T17:05:12 | https://dev.to/travelgo/discover-the-enchantment-of-santorini-a-journey-to-the-jewel-of-the-aegean-73a | santorini, greece, travel, flight | <p> </p><h3 class="graf graf--h3 graf--empty" name="6d29"><strong class="markup--strong markup--p-strong">Introduction</strong></h3><p class="graf graf--p" name="14ab">Welcome to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a>, the crown jewel of the Aegean Sea, where whitewashed buildings cascade down cliffsides, crystal-clear waters shimmer under the Mediterranean sun, and breathtaking sunsets paint the sky in hues of orange and pink. Nestled in the Cyclades archipelago, this iconic Greek island is a haven for travelers seeking romance, relaxation, and unparalleled beauty. Join us on a virtual journey as we uncover the timeless allure of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a> and why it should be at the top of your travel bucket list.</p><p class="graf graf--p graf--empty" name="cb50"><br /></p><figure class="graf graf--figure" name="b39d"><img class="graf-image" data-height="839" data-image-id="0*Oz1zVPiUPswdPfTQ.jpg" data-width="1280" src="https://cdn-images-1.medium.com/max/800/0*Oz1zVPiUPswdPfTQ.jpg" /></figure><p class="graf graf--p" name="861c"><strong class="markup--strong markup--p-strong">A Tapestry of Colors: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a><strong class="markup--strong markup--p-strong"> sunset, Greek islands, Oia”</strong></p><p class="graf graf--p" name="2c4c">As you approach <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a> by sea, prepare to be mesmerized by its dramatic landscape of towering cliffs, volcanic calderas, and picturesque villages perched precariously on the edge of the crater. The most iconic of these villages is Oia, renowned for its stunning sunsets that attract visitors from around the world. Wander through its narrow cobblestone streets, lined with boutique shops, art galleries, and charming cafes, and find the perfect spot to watch the sun dip below the horizon in a blaze of colors.</p><p class="graf graf--p" name="71a9"><strong class="markup--strong markup--p-strong">Idyllic Beaches and Azure Waters: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a><strong class="markup--strong markup--p-strong">beaches, Greek island hopping, Perissa”</strong></p><p class="graf graf--p" name="a5f2"><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a> is blessed with some of the most beautiful beaches in the Aegean, each offering its own unique charm. From the black sands of Perissa and Kamari to the red sands of Red Beach, there’s a beach to suit every mood and preference. Spend your days basking in the Mediterranean sun, swimming in the crystal-clear waters, or indulging in water sports such as snorkeling, diving, and sailing. For a truly secluded escape, hop on a boat to the uninhabited islets of Nea Kameni and Palea Kameni, where volcanic hot springs offer therapeutic relaxation amidst stunning natural scenery.</p><p class="graf graf--p" name="aee9"><strong class="markup--strong markup--p-strong">Culinary Delights and Gastronomic Adventures: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a><strong class="markup--strong markup--p-strong"> cuisine, Greek food, local delicacies”</strong></p><p class="graf graf--p graf--empty" name="61b6"><br /></p><figure class="graf graf--figure" name="8c83"><img class="graf-image" data-height="844" data-image-id="0*7qwJhKAPrqOLXsbT.jpg" data-width="1280" src="https://cdn-images-1.medium.com/max/800/0*7qwJhKAPrqOLXsbT.jpg" /></figure><p class="graf graf--p" name="926f">No visit to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a> is complete without sampling its world-renowned culinary delights. Savour the flavors of the island with traditional dishes such as fava (split pea puree), tomatokeftedes (tomato fritters), and fresh seafood caught daily by local fishermen. Pair your meal with a glass of Assyrtiko, the island’s signature white wine, cultivated in the volcanic soil of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a>’s vineyards. Be sure to save room for dessert, as no trip to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a> is complete without indulging in a sweet treat of loukoumades (Greek donuts) drizzled with honey and cinnamon.</p><p class="graf graf--p" name="f3ce"><strong class="markup--strong markup--p-strong">Exploring Ancient Treasure: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a><strong class="markup--strong markup--p-strong"> history, archaeological sites, Akrotiri”</strong></p><p class="graf graf--p graf--empty" name="2aa9"><br /></p><figure class="graf graf--figure" name="517f"><img class="graf-image" data-height="807" data-image-id="0*AdT6j6VZpus59vck.jpg" data-width="1280" src="https://cdn-images-1.medium.com/max/800/0*AdT6j6VZpus59vck.jpg" /></figure><p class="graf graf--p" name="099e">For history enthusiasts, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a> offers a wealth of archaeological treasures waiting to be discovered. Explore the ancient ruins of Akrotiri, a Minoan settlement preserved in volcanic ash for over 3,500 years, often referred to as the “Pompeii of the Aegean”. Wander through its well-preserved streets, marvel at the intricate frescoes depicting daily life in ancient times, and imagine the bustling port city that once thrived here. Afterwards, pay a visit to the Museum of Prehistoric Thera in Fira, where artifacts unearthed from Akrotiri provide insight into <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a>’s rich history and culture.</p><p class="graf graf--p" name="b79c"><strong class="markup--strong markup--p-strong">Planning Your </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a><strong class="markup--strong markup--p-strong"> Adventure: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a><strong class="markup--strong markup--p-strong"> travel tips, Greek island vacation, best time to visit </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a><strong class="markup--strong markup--p-strong">”</strong></p><p class="graf graf--p" name="bf83">Whether you’re seeking romance, relaxation, or adventure, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a> offers an unforgettable experience that will leave you enchanted and longing for more. From its stunning sunsets and idyllic beaches to its delectable cuisine and ancient treasures, this magical island is a destination like no other. So pack your bags, book your ticket, and prepare to embark on a journey to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/region/gr/santorini.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Santorini</a>, where dreams become reality and memories are made to last a lifetime.</p><p class="graf graf--p graf--empty" name="acb1"><br /></p> | travelgo |
1,867,770 | Using Mountaineer to develop a React app with Python | Written by Rosario De Chiara✏️ Mountaineer is a framework for building web apps in Python and React... | 0 | 2024-05-30T17:04:22 | https://blog.logrocket.com/using-mountaineer-develop-react-app-python | react, python | **Written by [Rosario De Chiara](https://blog.logrocket.com/author/rosariodechiara/)✏️**
Mountaineer is a framework for building web apps in Python and React easily. The idea of Mountaineer is to let the developer leverage previous knowledge of Python and TypeScript to use each language (and framework) for the task they are most suitable for.
The basic idea is to develop the frontend as a proper React application and the backend as several Python services: everything in a single project, types consistent up and down the stack, simplified data binding and function calling, and server rendering for better accessibility.
In this article, we will describe the setup of a Mountaineer project and show how to develop a simple application containing all the basic concepts. By the end, you'll be able to seamlessly integration frontend and backend components in a single project.
## Setting up the Mountaineer development environment
Before starting, it is important to set up a proper environment. Mountaineer essentially transplants a React project, which is a Node application, into a Python environment. So, it can be quite picky about versions of each component in the environment.
In my setup, WSL is running quite an old version of Ubuntu (Ubuntu 20.04.6 LTS) under Windows, so I had to update the following packages:
* **Rust language**: Updated to version greater or equal to 1.77
* **Go language**: Updated to version 1.22
* **Node**: Updated to version greater or equal to 20
* **Python language**: Updated to version greater or equal to 3.11
These settings will change once Mountaineer becomes stable. It is also worth mentioning that the author was responsive and supportive when I had problems setting up the system.
Once your environment is set, you can create a boilerplate application by using the following command:
```shell
pipx run create-mountaineer-app
```
This is the facility available to create the (pretty intricate) directory structure with all the dependencies of the two, co-existing environments: the Python project and the Node project.
In the following figure, you can see the output of the command, which may vary depending on pre-existing requisites:
```python
$ pipx run create-mountaineer-app
? Project name [my-project]: microblog
? Author [Rosario De Chiara <rosdec@gmail.com>]
? Use poetry for dependency management? [Yes] Yes
? Create stub MVC files? [Yes] No
? Use Tailwind CSS? [Yes] No
? Add editor configuration? [vscode] vscode
Creating project...
Creating .gitignore
Creating docker-compose.yml
Creating README.md
Creating pyproject.toml
Creating .env
Creating microblog/app.py
Creating microblog/main.py
Creating microblog/cli.py
Creating microblog/config.py
Creating microblog/__init__.py
Creating microblog/views/package.json
No content detected in microblog/views/tailwind.config.js, skipping...
No content detected in microblog/views/postcss.config.js, skipping...
No content detected in microblog/views/__init__.py, skipping...
No content detected in microblog/views/app/main.css, skipping...
No content detected in microblog/views/app/home/page.tsx, skipping...
No content detected in microblog/views/app/detail/page.tsx, skipping...
No content detected in microblog/controllers/home.py, skipping...
No content detected in microblog/controllers/detail.py, skipping...
Creating microblog/controllers/__init__.py
No content detected in microblog/models/detail.py, skipping...
Creating microblog/models/__init__.py
Project created at /home/user/microblog
Creating virtualenv microblog-IiOnN0qh-py3.11 in /home/user/.cache/pypoetry/virtualenvs
Updating dependencies
Resolving dependencies... (1.3s)
Package operations: 29 installs, 0 updates, 0 removals
[....INSTALLATION OF PYTHON PACKAGES....]
Writing lock file
Installing the current project: microblog (0.1.0)
Poetry venv created: /home/user/.cache/pypoetry/virtualenvs/microblog-IiOnN0qh-py3.11
added 129 packages, and audited 130 packages in 9s
34 packages are looking for funding
run `npm fund` for details
found 0 vulnerabilities
Environment created successfully
Creating .vscode/settings.json
Editor config created at /home/user/microblog
$
```
If you look closely, you can spot two distinguishable phases of dependencies installation. Note how `create-mountaineer-app` is not only able to generate the scaffolding of the app but also to populate it with a sample MVC project.
For this article, we won’t use this function but we will implement a sample application by hand with this command:
```python
$ poetry run runserver
```
You will be able to start the web server (see [http://127.0.0.1:5006/](http://127.0.0.1:5006/)) and begin developing the application with the useful hot reload once the source code is modified.
I must admit, the first run is not very exciting – there is no loaded page and the output is pretty dull:
Before starting the development, let’s look at the directory structure that is created by the script we just ran. From the descriptions, you should be able to understand where to concentrate depending on what you intend to do:
## Adding the controller and the view
Creating a page involves setting up a new controller to define the data that can be pushed and pulled to your frontend.
Let’s create a controller named `home.py` in the directory controller; as a controller, it will run on the backend and, as you probably expect, it is a Python script.
The general idea is to have an instance of the `ControllerBase` class and implement the method render that provides the raw data payload that will be sent to the frontend on the initial render and during any side effect update.
In most cases, you should return a `RenderBase` instance (see below) but if you have no data to display, you can also return `None`, like we do here. Additionally, we have to set the `url` parameter that contains the URL on which the controller is reachable, and the `view_path` that associates the view to this controller.
The `render()` function is a core building block of Mountaineer and all controllers need to have one: it defines all the data that your frontend will need to resolve its view:
```python
from mountaineer import ControllerBase
class HomeController(ControllerBase):
url = "/"
view_path = "/app/home/page.tsx"
async def render( self ) -> None:
pass
```
The next step is to register the new controller in `app.py`:
```python
from mountaineer.app import AppController
from mountaineer.js_compiler.postcss import PostCSSBundler
from mountaineer.render import LinkAttribute, Metadata
from intro_to_mountaineer.config import AppConfig
from intro_to_mountaineer.controllers.home import HomeController
controller = AppController(
config=AppConfig(), # type: ignore
)
controller.register(HomeController())
```
At this point, if you save your file, the server will automatically reload, registering the new controller but complaining about the missing `page.tsx`, which is the view we have associated with the new controller.
The view is, of course, a TypeScript/React file:
```javascript
import React from "react";
import { useServer } from "./_server/useServer";
const Home = () => {
const serverState = useServer();
return (
<div>
<h1>Home</h1>
<p>Hello, world!</p>
</div>
);
};
export default Home;
```
You have to create the directory path `/app/home/` under `/view/` where our React project lives and place the file above, named `page.tsx`.
If you placed everything in the correct places, your browser will refresh and show the newly created page:
If you have a problem placing the right file in the directory, check [this specific commit on the repo](https://github.com/rosdec/intro_to_mountaineer/tree/46f840f2b34af5b5efc3874453ca4115bdce7222) and see how the application looks.
## Adding the model
One smart idea of Mountaineer is that it comes with the support of a PostgresSQL database to back your data. To facilitate its use, together with the files in your project, the `create_mountaineer_app` script also creates a `docker-compose.yml` YAML file to start the PostgresSQL server in your docker. You do not have to handle the process of building tables; Mountaineer will just inspect your code in the `/model` directory to understand what objects you need in the database.
The first step is to create a new Python script. In this example, it will be `blogpost.py` in the `/model` directory:
```python
from mountaineer.database import SQLModel, Field
from uuid import UUID, uuid4
from datetime import datetime
class BlogPost(SQLModel, table=True):
id: UUID = Field(default_factory=uuid4, primary_key=True)
text: str
data: str = datetime.now()
```
To add this file to the project, you have to include it in the `__init__.py` Python file:
```python
from .blogpost import BlogPost
```
At this point, we are ready to create the table in the database with the following commands. Of course, you must have a `docker` installation in your system on which to instantiate the container:
```shell
docker-compose up -d
poetry run createdb
```
The `createdb` script will look into the `/model` directory and, for each object that has been included in the initialization file `__init__.py`, it will create a table with columns that match the names and types defined in the `blogpost.py` file (for this example).
Out of curiosity, if you check your PostgresSQL database, you can see the structure of the `blogpost` table:
Now we have all the elements in place to complete the development of the application. First, let’s add the functionality for adding a new blog post. To do so, we have to add the input fields to the frontend (in the `/views` directory) and update the controller to properly add a row to the `blogpost` table (in the `/controllers` directory).
We first add a new method in the backend, which is the controller, in the file `/controllers/home.py` (the complete file is on the repo):
```typescript
class HomeController(ControllerBase):
url = "/"
view_path = "/app/home/page.tsx"
async def render(self) -> None:
pass
@sideeffect
async def add_blogpost( self,
payload: str,
session: AsyncSession = Depends(DatabaseDependencies.get_db_session)
) -> None:
new_blogpost = BlogPost(text=payload)
session.add(new_blogpost)
await session.commit()
```
In the code above, we define the method `add_blogpost` that is marked by the `@sideeffect` decorator. This says to Mountaineer that this code will have an impact on the data and for this reason, when invoked, the server state must be reloaded. The `add_blogpost` method will simply input the parameter payload, which will contain all the data passed through from the backend and the session that contains the pointer to the database. By using the payload, we create a new `BlogPost` object instance, using the payload string to initialize it. The `new_blogpost` object is added to the session, which is translated to an insert in the Blogpost table in the database.
The second modification is in the view. Below is a snippet from the `page.tsx` file in the `/views/app/home` (the complete file is on the repo):
```typescript
const CreatePost = ({ serverState }: { serverState: ServerState }) => {
const [newBlogpost, setNewBlogpost] = useState("");
return (
<div>
<input type="text"
value={newBlogpost}
onChange={(e) => setNewBlogpost(e.target.value)} />
<button
onClick={
async () => {
await serverState.add_blogpost({
payload: newBlogpost.toString()
});
setNewBlogpost("");
}}>
Post</button>
</div>
);
};
```
Working on the frontend, we define a new React component that is just a simple form to handle the textbox and the `onClick` event when we submit it. As you can see in the code above, we just invoked the backend service `add_blogpost` defined in the controller.
In the following image, you can see the real superpower of Mountaineer: the strong interconnection between the Python project and the React/TypeScript project:
In the React/TypeScript part of the codeblock above, we see the new function, `add_blogpost()` , added to the controller without any further configuration. Each time we modify the source code, Mountaineer incorporates the modifications by updating the type hints and function suggestions.
Once you complete all the modifications in the browser, you will be able to see the new UI:
When you interact with the form by checking the database, you will be able to see that the whole process works:
Now we have a proper data flow from the frontend to the database through the backend. The last step is to implement the flow in the opposite direction, from the database to the frontend. This will involve changes in two places: the controller and the view.
The controller will have a new version of the `render` function:
```typescript
async def render(
self,
request: Request,
session: AsyncSession = Depends(DatabaseDependencies.get_db_session)
) -> HomeRender:
posts = await session.execute(select(BlogPost))
return HomeRender(
posts=posts.scalars().all()
)
```
`render` is invoked during the initial render and on any `sideeffect` update. Its purpose is to provide the data from the database that will be sent to the frontend. The updates go into the server state by using the `RenderBase` instance to update it. In the example above, you can see how the array named `posts` is filled by executing a query on the specific object `BlogPost`.
On the view, we just have to manipulate the data from the `serverState` and assemble them in the interface: for this purpose, we wrote a new React component named `ShowPosts`:
```typescript
const ShowPosts = ({ serverState }: { serverState: ServerState }) => {
return (
serverState.posts.map((post) => (
<div key={post.id}>
<div>{post.text}</div>
<div>{post.data}</div>
<br></br>
</div>
)))
}
```
We already know that in the `serverState` object, we will find an object named `posts` that is populated in the controller above. The updated files are on the repo and the final result is the following:
## Conclusion
This project has some similarities with projects like [ReactPy](https://github.com/reactive-python/reactpy) and [PyReact](https://pyreact.com/). However, unlike those projects, it allows you to integrate both the frontend written in pure TypSscript/React and the backend in pure Python/Uvicorn into a single condebase, achieving strong coupling between the two layers by using Mountaineer.
---
##Get set up with LogRocket's modern React error tracking in minutes:
1. Visit https://logrocket.com/signup/ to get an app ID.
2. Install LogRocket via NPM or script tag. `LogRocket.init()` must be called client-side, not server-side.
NPM:
```bash
$ npm i --save logrocket
// Code:
import LogRocket from 'logrocket';
LogRocket.init('app/id');
```
Script Tag:
```javascript
Add to your HTML:
<script src="https://cdn.lr-ingest.com/LogRocket.min.js"></script>
<script>window.LogRocket && window.LogRocket.init('app/id');</script>
```
3.(Optional) Install plugins for deeper integrations with your stack:
* Redux middleware
* ngrx middleware
* Vuex plugin
[Get started now](https://lp.logrocket.com/blg/signup) | leemeganj |
1,870,619 | Learning AWS Day by Day — Day 79 — Amazon MQ | Exploring AWS !! Day 79 Amazon MQ Message broker service that makes it easier to migrate to a... | 0 | 2024-05-30T17:03:26 | https://dev.to/rksalo88/learning-aws-day-by-day-day-79-amazon-mq-529p | aws, cloud, cloudcomputing, beginners | Exploring AWS !!
Day 79
Amazon MQ
Message broker service that makes it easier to migrate to a message broker. A message broker allows software applications and components to communicate using various programming languages, OS, and formal messaging protocols.
Amazon MQ supports Apache ActiveMQ Classic and RabbitMQ engine types.
Amazon MQ works with your applications and services without the need to manage, operate, or maintain your own messaging system.
Difference between Amazon MQ and SQS or SNS
MQ is a message broker service providing compatibility with many popular message brokers. Amazon MQ is recommended for migrating applications from message brokers relying on compatibility with APIs like JMS or protocols such as AMQP 0–9–1, AMQP 1.0, MQTT, OpenWire, and STOMP.
Amazon SQS and Amazon SNS are queue and topic services — highly scalable, simple to use, and message brokers set up is not required. These services are better option for new applications that can benefit from nearly unlimited scalability and simple APIs. | rksalo88 |
1,870,614 | task 11 | from selenium import webdriver from selenium.webdriver.common.action_chains import ActionChains from... | 0 | 2024-05-30T17:00:09 | https://dev.to/abul_4693/task-11-1l5b | from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.by import By
import time
# Start a new browser session
driver = webdriver.Chrome()
try:
# Open the URL
driver.get("https://jqueryui.com/droppable/")
# Switch to the iframe containing the draggable elements
iframe = driver.find_element(By.CLASS_NAME, "demo-frame")
driver.switch_to.frame(iframe)
# Locate the draggable element
draggable_element = driver.find_element(By.ID, "draggable")
# Locate the droppable element
droppable_element = driver.find_element(By.ID, "droppable")
# Perform the drag and drop operation
actions = ActionChains(driver)
actions.drag_and_drop(draggable_element, droppable_element).perform()
# Wait for a few seconds to see the result
time.sleep(2)
finally:
# Close the browser
driver.quit()
 | abul_4693 | |
1,870,369 | Enhance Your Search Capabilities Using Algoboost as a Vector Store | In the ever-evolving landscape of artificial intelligence and machine learning, efficiency and... | 0 | 2024-05-30T16:57:13 | https://dev.to/tshidisoisazi/enhance-your-search-capabilities-using-algoboost-as-a-vector-store-30ll | vectordatabase, machinelearning, python, ai | In the ever-evolving landscape of artificial intelligence and machine learning, efficiency and scalability are paramount. Introducing Algoboost, a cutting-edge platform designed to revolutionize embedding model inference and vector storage. Whether you're a data scientist, machine learning engineer, or a business leveraging AI, Algoboost is here to elevate your capabilities and streamline your workflows.
To get started with algoboost have a look at this post [here](https://dev.to/tshidisoisazi/introducing-algoboost-revolutionizing-embedding-model-inference-and-vector-storage-4696)
In this blog post we will be showing you how to use algoboost as a vector store.
**What is a vector store and how is it used?**
A vector store is a specialized data structure or database optimized for storing and retrieving vectors. Vectors are mathematical representations of data points in a multi-dimensional space, often used in machine learning, natural language processing (NLP), and information retrieval. Each vector consists of a list of numerical values, representing various features of the data.
## **Key Uses of Vector Stores**
**Similarity Search**
- **Purpose:** To find the most similar data points to a given query vector.
- **Applications:** Image search (finding similar images), document retrieval, recommendation systems, and more.
**Clustering**
- **Purpose:** To group similar vectors together.
- **Applications:** Customer segmentation, topic modeling, and anomaly detection.
**Classification**
- **Purpose:** To assign labels to data points based on their vector representations.
- **Applications:** Sentiment analysis, spam detection, and product categorization.
**Embedding Storage**
- **Purpose:** To store embeddings generated by machine learning models.
- **Applications:** Word embeddings (e.g., Word2Vec, GloVe), sentence embeddings (e.g., BERT, Sentence Transformers), and graph embeddings.
## **Real-World Applications**
**Recommendation Systems**
- By storing user and item embeddings, systems can recommend items based on the similarity of user preferences and item features.
**Semantic Search**
- Enhances search engines by retrieving results based on semantic meaning rather than just keyword matching.
**Fraud Detection**
- Detects anomalous behavior by finding vectors that deviate significantly from typical patterns.
## **How to use algoboost as a vector store**
- **step 1: Create a collection for your vectors**
First, you need to create a collection and give your collection a name along with specifying the similarity metric it will use for vector similarity search.
```python
import requests
api_key = "" # Replace {API_KEY} with your API key
def create_vector_store(collection_name, model_type, dimension,
similarity_metric):
url = "https://app.algoboost.ai/api/model/create_vector_store"
headers = {
"Authorization": f"Bearer {api_key}",
"Content-Type": "multipart/form-data"
}
try:
data = {
"collection_name": collection_name,
"model_type": model_type,
"dimension": dimension,
"similarity_metric": similarity_metric
}
response = requests.post(url, headers=headers, data=data)
# Check the HTTP status code
if response.status_code == 200:
# Parse the JSON response
results = response.json()
return results
else:
print(f"API request failed with status code: {response.status_code}")
return None
except Exception as e:
print(f"An error occurred: {str(e)}")
return None
# Example usage:
collection_name = 'your_collection_name' # your collection name
model_type = 'image' # text or image
dimension = 512 # vector dimension
similarity_metric = 'COSINE' # L2 or COSINE
result = create_vector_store(collection_name, model_type, dimension,
similarity_metric)
print(result) # or do something with the result
```
**Step 2: Store Vectors**
Once a collection is created, you can store your vectors via the Algoboost API.
```python
import requests
def store_vectors(api_url, collection_name, model_type, partition, vectors, api_key):
"""
Store vectors in the Algoboost vector store.
Parameters:
- api_url (str): The API endpoint URL.
- collection_name (str): The name of the collection to store vectors in.
- model_type (str): The type of model (e.g. 'image' or 'text').
- partition (str): The partition name.
- vectors (list of dict): The list of vectors to store, each with 'input' and 'vector' keys.
- api_key (str): api_key.
- session_cookie (str): The session cookie for authentication.
Returns:
- response (requests.Response): The response object from the API call.
"""
# Define the payload with the required data
payload = {
"collection_name": collection_name,
"model_type": model_type,
"model": "",
"partition": partition,
"data": vectors
}
# Define the headers including the Authorization token
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {api_key}"
}
# Send the POST request to the API
response = requests.post(api_url, json=payload, headers=headers)
return response
# Example usage of the function
api_url = "https://app.algoboost.ai/api/model/store_vector"
collection_name = "your_collection_name"
model_type = "image" # text or image
partition = "your_partition"
vectors = [
{"input": "", "vector": [0.1, 0.2, 0.3]},
{"input": "", "vector": [0.4, 0.5, 0.6]}
]
api_key = "your_api_key"
response = store_vectors(api_url, collection_name, model_type, partition, vectors, api_key)
# Print the response from the API
print(response.json())
```
**Step 3: Similarity Search in Your Collection**
To perform a similarity search, use the Algoboost API to query your collection with a given vector and retrieve the most similar vectors.
```python
import requests
def vector_store_similarity(api_key, collection_name, model_type, limit, partition, vector):
"""
Makes a request to the Algoboost vector similarity API.
Parameters:
- api_key (str): Your Algoboost API key.
- collection_name (str): The name of your collection.
- model_type (str): The type of model ('text' or 'image').
- limit (int): The number of results to return.
- partition (str): Your partition.
- vector (list): The vector for similarity comparison.
Returns:
- dict: The JSON response from the API.
"""
url = "http://app.algoboost.ai/api/model/vector_similarity"
payload = {
"collection_name": collection_name,
"model_type": model_type,
"limit": limit,
"partition": partition,
"vector": vector
}
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {api_key}"
}
response = requests.post(url, json=payload, headers=headers)
return response.json()
# Example usage:
api_key = "your_algoboost_api_key" # Replace with your actual Algoboost API key
collection_name = "your_collection_name"
model_type = "image" # or "text"
limit = 3
partition = "your_partition"
vector = [0.4, 0.5, 0.6]
result = vector_store_similarity(api_key, collection_name, model_type, limit, partition, vector)
print(result)
```
**Conclusion**
In the world of AI and machine learning, staying ahead means leveraging the best tools available. Algoboost offers a powerful, efficient, and scalable solution for embedding model inference and vector storage, empowering you to innovate and achieve more. Experience the future of AI infrastructure with Algoboost.
Ready to boost your AI capabilities? [Sign up ](algoboost.ai)for Algoboost today.
| tshidisoisazi |
1,870,613 | Concurrency Limit | const CONCURRENCY_LIMIT = 3 function asyncTaskRunner(tasks) { const results = new... | 0 | 2024-05-30T16:54:19 | https://dev.to/officialbidisha/concurrency-limit-1ajg | ```
const CONCURRENCY_LIMIT = 3
function asyncTaskRunner(tasks) {
const results = new Array(tasks.length).fill(0)
const totalTasks = tasks.length
let currentTaskIndex = 0
const runner = (resolve) => {
if (!Array.isArray(tasks)) {
throw new Error("tasks must be Array");
}
let taskQueue = []
const runNext = async () => {
if (taskQueue.length === 0 && currentTaskIndex === totalTasks) {
resolve(results)
return
}
if (taskQueue.length >= CONCURRENCY_LIMIT || tasks.length === 0) {
return
}
const taskIndex = currentTaskIndex;
currentTaskIndex += 1
const task = tasks.shift()
console.log('scheduling task ', taskIndex)
taskQueue.push(task)
task()
.then(result => {
console.log('finished task: ', taskIndex)
results[taskIndex] = result
taskQueue = taskQueue.filter((t => t !== task))
runNext()
})
}
for (let i = 0 ; i < CONCURRENCY_LIMIT; i++) {
if (tasks.length === 0) {
break
}
const taskIndex = currentTaskIndex;
currentTaskIndex += 1
const task = tasks.shift()
console.log('scheduling task ', taskIndex)
taskQueue.push(task)
task()
.then(result => {
console.log('finished task: ', taskIndex)
results[taskIndex] = result
taskQueue = taskQueue.filter((t => t !== task))
runNext()
})
}
};
return new Promise((res) => runner(res));
}
const t1 = () => new Promise(res => setTimeout(() => res('t1'), 3000))
const t2 = () => new Promise(res => setTimeout(() => res('t2'), 200))
const t3 = () => new Promise(res => setTimeout(() => res('t3'), 1500))
const t4 = () => new Promise(res => setTimeout(() => res('t4'), 5000))
const t5 = () => new Promise(res => setTimeout(() => res('t5'), 4000))
const t6 = () => new Promise(res => setTimeout(() => res('t6'), 1000))
const tasks = [t1, t2, t3, t4, t5, t6]
asyncTaskRunner(tasks)
.then(console.log)
``` | officialbidisha | |
1,870,273 | Learning Go, Building a File Picker using Fyne.io | Part 3 - Using fyne.io to select files Go has an io library that enables a developer to... | 0 | 2024-05-30T15:47:18 | https://dev.to/cjr29/learning-go-building-a-file-picker-using-fyneio-33le | go, fyne, learning | #Part 3 - Using fyne.io to select files
Go has an io library that enables a developer to access the host file system. Building a GUI application that interacts with the native file system requires the developer to try to make the user experience the same, or similar, across platforms. We want a user to be able to work with the application without having to learn multiple ways to respond to application prompts to open files. Fortunately, [fyne.io](https://fyne.io/) provides a fairly robust cross-platform toolset with which to accomplish this task.
##Background and Review
In my journey learning Go, I’ve structured my efforts around an actual programming challenge. My longtime interest in CPU design and instruction sets led me to base my learning around a CPU simulator. Specifically, I set myself the problem of adding a GUI front end to an existing terminal-based CPU simulator.
I started my project with an [imaginary CPU](https://github.com/cjr29/go-cpu-simulator.git) I found on GitHub. That simple instruction set helped me get familiar with the basics of Go and fyne.io. Once I had the base dashboard developed, I searched for a simulator for a more complex CPU. Fortunately, there was a comprehensive simulator for the 6502 8-bit processor with associated assembler and disassembler that has been actively maintained. The 6502 was the processor on which the original Apple computer was based. I [forked a copy](https://github.com/cjr29/go6502.git) of that and continued my learning. A summary of that effort is described in my second post [here](https://dev.to/cjr29/my-experience-learning-go-next-steps-16hd).
Using the new fork of a 6502 simulator, I copied over my dashboard package and began studying the code. I don't know how other developers study and learn someone else's code, but my approach has been to first scan the entire repository and get a brief idea of the structure and components of the application. I review the README, if there is one, and then I try to compile and run the application. I've found that getting the environment properly configured and correcting missing dependencies, through often frustrating, forces me to learn a lot about the application and how it is built.
If you are lucky, the original developer will have left a few test cases to run. These definitely help in understanding how to use the various packages in the application. If you aren't that lucky, then start at the top and find the main.go package and follow how it sets up and executes the rest of the application.
In the case of the 6502 simulator, I found the CPU and Host structures, the methods that operate on them, and focused on how the elements of the CPU were specified and stored. After some study, I learned that the Host object and associated methods were called upon from a terminal session to invoke individual instructions and return results. I just had to simulate the commands to the CPU that would be sent from the terminal and generate them using GUI buttons. Output was redirected from stdout to my GUI scrolling component. The well-designed 6502 simulator made it relatively easy to integrate my dashboard.
The only thing missing from the updated GUI-based application was a means for the user to select files to compile and load rather than have to enter them on the command line. That is where the file picker project starts.
##The File Picker
Fyne provides a [Dialog package](https://docs.fyne.io/api/v2.4/dialog/filedialog.html) for use in creating various dialogs a user may need to conduct with an application. One specific to our needs is the FileDialog. It opens a dialog with the user allowing navigation through the local file system to select a specific file. On pressing Save, that file info is provided to the callback function that the developer specifies in the call to the dialog. If there is no error, then the application can use the resulting file URI in further processing.
Let's look at the details of what happens. I wrote a function in my dashboard I called showFilePicker(w Fyne.Window). It takes as an argument the Fyne.Window object used by the dashboard. I created a File button on the dashboard and associated showFilePicker(w Fyne.Window) as the callback function the window invokes whenever the File button is pressed. I also created a Label widget to display and contain the selected file and path. I also save the URI returned by the picker for later use.
```
var fileButton *widget.Button
var selectedFile *widget.Label
var fileURI fyne.URI
fileButton = widget.NewButton("File", func() { showFilePicker(w) })
```
When the user presses the File button, showFilePicker is activated and immediately invokes the Fyne dialog.ShowFileOpen method. You must import the dialog package at the head of your file.
```
import (
"fyne.io/fyne/v2/dialog"
)
//...
// Show file picker and return selected file
func showFilePicker(w fyne.Window) {
dialog.ShowFileOpen(func(f fyne.URIReadCloser, err error) {
saveFile := "NoFileYet"
if err != nil {
dialog.ShowError(err, w)
return
}
if f == nil {
return
}
saveFile = f.URI().Path()
fileURI = f.URI()
selectedFile.SetText(saveFile)
}, w)
}
```
The Fyne window invokes showFilePicker() when the File button is pressed. When showFilePicker is running, the rest of the GUI is blocked until it returns. showFilePicker starts a modal dialog by calling dialog.ShowFileOpen. As a modal dialog, the dashboard is blocked until it returns. ShowFileOpen returns a Fyne.URIReadCloser, which has numerous useful methods, and an error object. If error is nil, then we can process the selected file object.
I place the file path into the label widget by calling selectedFile.SetText(saveFile). I also preserve the returned URI in a variable I prepared called fileURI. I will use that URI to determine what type of file has been selected. Is it a .asm, assembly language file, or a .bin, assembled 6502 binary file? The Assemble and Load button callback functions use the URI to check the extension before trying to complete their actions.
## Conclusions
Sure, this is a primitive file selector. It doesn't maintain state to know where we are in a specific directory and to start there instead of the user's home. However, because it is modal and blocking the GUI, we want to handle the file selection as efficiently as possible and return control to the window so it can respond to other buttons and actions.
So, that is all for now. I'd like to enhance the picker to enable selection of multiple files so we can assemble a batch at once. Likewise, loading multiple binaries into different areas of memory could be quite handy.
Please feel free to comment and suggest improvements or other topics of interest to a learner of Go and GUI development. Thanks for reading.
| cjr29 |
1,870,612 | Take me to the beach Frontend Challenge: June Edition | This is a submission for [Frontend Challenge... | 0 | 2024-05-30T16:50:26 | https://dev.to/chintanonweb/take-me-to-the-beach-frontend-challenge-june-edition-1b5d | devchallenge, frontendchallenge, css, javascript | _This is a submission for [Frontend Challenge v24.04.17]((https://dev.to/challenges/frontend-2024-05-29), Glam Up My Markup: Beaches_
## What I Built
Take me to the beach!
Welcome to our curated list of the best beaches in the world. Select a beach from the dropdown to Take me to the beach!
## Demo
{% codepen https://codepen.io/chintan-dhokai/pen/OJYWwxb %}
## Journey
To create a more interactive experience where selecting a beach triggers an animation of a person walking to that beach, I've use HTML, CSS, and JavaScript. This will involve:
##Explanation
###HTML:
- A dropdown menu is added for selecting a beach.
- The animation section contains a div with a structured representation of a person using div elements for different body parts.
###CSS:
- The person is built using div elements styled to look like body parts.
- Keyframe animations for walking movement (walk-leg and walk-arm) were added.
- Transition property is used for the walking animation.
###JavaScript:
- The change event listener is attached to the beach dropdown.
- The beach container's background image changes based on the selected beach.
- This implementation ensures that the person appears to walk across the screen to the selected beach.
{% embed https://dev.to/chintanonweb/nature-css-art-frontend-challenge-june-edition-11kn %} | chintanonweb |
1,870,611 | task 10 | 1)from selenium import webdriver from selenium.webdriver.common.by import By Start a new... | 0 | 2024-05-30T16:47:10 | https://dev.to/abul_4693/task-10-4jfe | 1)from selenium import webdriver
from selenium.webdriver.common.by import By
# Start a new browser session
driver = webdriver.Chrome()
try:
# Open the Instagram page
driver.get("https://www.instagram.com/guviofficial/")
# Wait for the page to load
driver.implicitly_wait(10) # Wait for 10 seconds for elements to appear
# Extract the number of posts
post_count_element = driver.find_element(By.XPATH, '//span[text()="posts"]/span')
post_count = post_count_element.text
print("Number of posts:", post_count)
# Extract the number of followers
follower_count_element = driver.find_element(By.XPATH, '//span[@title="Followers"]/span')
follower_count = follower_count_element.get_attribute("title")
print("Number of followers:", follower_count)
# Extract the number of following
following_count_element = driver.find_element(By.XPATH, '//span[@title="Following"]/span')
following_count = following_count_element.get_attribute("title")
print("Number of following:", following_count)
finally:
# Close the browser
driver.quit()
2) from selenium import webdriver
from selenium.webdriver.common.by import By
# Start a new browser session
driver = webdriver.Chrome()
try:
# Open the Instagram profile page
driver.get("https://www.instagram.com/guviofficial/")
# Wait for the page to load
driver.implicitly_wait(10) # Wait for 10 seconds for elements to appear
# Extract the number of followers
followers_element = driver.find_element(By.XPATH, '//a[@href="/guviofficial/followers/"]/span')
followers_count = followers_element.get_attribute("title")
print("Followers:", followers_count)
# Extract the number of following
following_element = driver.find_element(By.XPATH, '//a[@href="/guviofficial/following/"]/span')
following_count = following_element.get_attribute("title")
print("Following:", following_count)
finally:
# Close the browser
driver.quit()
| abul_4693 | |
1,870,609 | Exploring the Timeless Charm of Athens: A Journey Through History and Culture | Introduction Nestled amidst the sun-kissed hills of Greece lies the enchanting city of Athens, a... | 0 | 2024-05-30T16:43:38 | https://dev.to/travelgo/exploring-the-timeless-charm-of-athens-a-journey-through-history-and-culture-gim | travel, greece, trip, athens | <p> </p><p class="graf graf--p" name="5ce9"><em class="markup--em markup--p-em">Introduction</em></p><p class="graf graf--p" name="fcfa">Nestled amidst the sun-kissed hills of Greece lies the enchanting city of <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens,</a> a destination steeped in history, mythology, and vibrant culture. As the cradle of Western civilization, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a> invites travelers on an unforgettable journey through time, where ancient ruins coexist harmoniously with modern marvels. Join us as we embark on an exploration of this timeless metropolis, where every street corner holds a story waiting to be discovered.</p><p class="graf graf--p graf--empty" name="d083"><br /></p><figure class="graf graf--figure" name="587c"><img class="graf-image" data-height="667" data-image-id="0*SKkOECC3dm-ikYVq" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*SKkOECC3dm-ikYVq" /></figure><p class="graf graf--p" name="bd39"><strong class="markup--strong markup--p-strong">Unraveling Ancient Mysteries: “Acropolis, Parthenon, Ancient Greece”</strong></p><p class="graf graf--p" name="d652">No visit to <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a> is complete without a pilgrimage to the Acropolis, an iconic symbol of Greece’s golden age. Crowned by the magnificent Parthenon, this ancient citadel offers a glimpse into the grandeur of classical antiquity. As you ascend the marble steps, you’ll be transported back in time to an era of philosophers, poets, and statesmen who shaped the course of history. Marvel at the intricate details of the Erechtheion, with its graceful Caryatid columns, and imagine the bustling agora below, where democracy was born.</p><p class="graf graf--p graf--empty" name="a84b"><br /></p><figure class="graf graf--figure" name="68fd"><img class="graf-image" data-height="664" data-image-id="0*aT0p78NlNOy8lxf8" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*aT0p78NlNOy8lxf8" /></figure><p class="graf graf--p" name="effa"><strong class="markup--strong markup--p-strong">Wandering Through Time: “Plaka, Ancient </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a><strong class="markup--strong markup--p-strong">, Greek history”</strong></p><p class="graf graf--p" name="50ab">Beyond the Acropolis, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a> is a treasure trove of archaeological wonders waiting to be explored. Lose yourself in the labyrinthine streets of the Plaka district, where Byzantine churches and neoclassical mansions stand side by side. Pause to admire the towering columns of the Temple of Olympian Zeus, a testament to the city’s ancient glory. Then, venture into the National Archaeological Museum, home to an unparalleled collection of artifacts spanning millennia, from Minoan frescoes to Mycenaean gold.</p><p class="graf graf--p" name="3fce"><strong class="markup--strong markup--p-strong">Embracing Modern Sophistication: “</strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a><strong class="markup--strong markup--p-strong"> nightlife, Greek cuisine, contemporary </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a><strong class="markup--strong markup--p-strong">”</strong></p><p class="graf graf--p graf--empty" name="2a1f"><br /></p><figure class="graf graf--figure" name="a6f2"><img class="graf-image" data-height="667" data-image-id="0*-6UZgr1hwVxo267o" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*-6UZgr1hwVxo267o" /></figure><p class="graf graf--p" name="7d11">While <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a> is undeniably a city rich in history, it also pulsates with the energy of contemporary life. Discover the vibrant neighborhoods of Psiri and Exarchia, where street art adorns every corner and trendy cafes spill onto bustling squares. Indulge in a culinary odyssey through the city’s tavernas and meze bars, savoring traditional dishes like moussaka, souvlaki, and fresh seafood. As the sun sets, join the locals for a night of revelry in the lively nightlife districts of Gazi and Kolonaki, where music fills the air and the ouzo flows freely.</p><p class="graf graf--p" name="2a72"><strong class="markup--strong markup--p-strong">A Cultural Tapestry: “Greek culture, </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a><strong class="markup--strong markup--p-strong"> museums, Greek art”</strong></p><p class="graf graf--p graf--empty" name="71f4"><br /></p><figure class="graf graf--figure" name="53fa"><img class="graf-image" data-height="1500" data-image-id="0*88LemSxXg44B0TiQ" data-width="1000" src="https://cdn-images-1.medium.com/max/800/0*88LemSxXg44B0TiQ" /></figure><p class="graf graf--p" name="dbc4"><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a> is not just a city of ancient ruins and modern delights; it is also a vibrant cultural hub, where tradition and innovation converge. Immerse yourself in the performing arts at the Odeon of Herodes Atticus, a stunning amphitheater that hosts concerts, operas, and dance performances beneath the stars. Explore the galleries of the Benaki Museum and the Stavros Niarchos Foundation Cultural Center, where contemporary Greek artists push the boundaries of creativity.</p><p class="graf graf--p" name="65f9"><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank"><strong class="markup--strong markup--p-strong">Click here for the best offers at Hotels!</strong></a></p><p class="graf graf--p" name="786b"><strong class="markup--strong markup--p-strong">Conclusion: “Visit </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a><strong class="markup--strong markup--p-strong">, Greece travel tips, </strong><a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a><strong class="markup--strong markup--p-strong"> vacation”</strong></p><p class="graf graf--p" name="aa6e">Whether you’re a history buff, a foodie, or a culture enthusiast, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a> offers something for every traveler. With its rich tapestry of ancient wonders, vibrant neighborhoods, and dynamic cultural scene, this city is sure to captivate your imagination and leave you longing for more. So pack your bags, book your ticket, and embark on an unforgettable adventure in the heart of Greece. As the birthplace of democracy and the cradle of civilization, <a class="markup--anchor markup--p-anchor" data-href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" href="https://www.booking.com/city/gr/athens.en.html?aid=8019784&no_rooms=1&group_adults=2&room1=A%2CA" rel="noopener" target="_blank">Athens</a> awaits, ready to welcome you with open arms.</p> | travelgo |
1,870,608 | Scraper compania Blackline | Scraper Orice scraper există datorită unei echipe de scraper și tester. Scraper-ul... | 0 | 2024-05-30T16:41:51 | https://dev.to/ale23yfm/scraper-compania-ccc | peviitor, scraper, tester, blackline | ## Scraper
Orice scraper există datorită unei echipe de scraper și tester. Scraper-ul companiei **_Blackline_** este scris de [Andrei Cojocaru](https://www.linkedin.com/in/andrei-cojocaru-985932204/) în limbajul Python și testat de [Diana Lavinia Dragoi](https://www.linkedin.com/in/diana-lavinia-dragoi/), drept muncă voluntară, și poate fi găsit pe GitHub, fiind un proiect open source.
{% github https://github.com/peviitor-ro/Scrapers_start_with_digi %}
---
## Te interesează să scrii un scraper sau să testezi unul?
Poți să te alături proiectului chiar de aici!
[Link Discord peviitor.ro](https://discord.gg/t2aEdmR52a)
--- | ale23yfm |
1,870,290 | Task 18 | Python Selenium Architecture in Detail Python Selenium is a robust framework for automating web... | 0 | 2024-05-30T10:42:17 | https://dev.to/shivark2010/task-18-28md | **Python Selenium Architecture in Detail**
Python Selenium is a robust framework for automating web browser interactions, primarily used for web application testing. Understanding its architecture is crucial to harness its capabilities effectively.
**Core Components:**
**Selenium WebDriver:**
The WebDriver is the core component of Selenium, providing a programming interface to create and execute test scripts. It interacts with the browser on a lower level than the older Selenium RC, allowing for more complex and nuanced interactions with web elements.
**Browser Drivers:**
ChromeDriver, GeckoDriver, etc.: Each browser (e.g., Chrome, Firefox, Safari, Edge) has a corresponding driver that serves as a bridge between the Selenium commands and the browser's native functionality. These drivers are essential for translating Selenium commands into actions that the browser can understand and perform.
**Selenium Client Libraries:**
These are language-specific bindings provided by Selenium for different programming languages, including Python. The Python library (selenium) allows developers to write test scripts in Python that communicate with the WebDriver.
**Selenium Server/Grid:**
The Selenium Server can run WebDriver tests on remote machines, enabling distributed testing. Selenium Grid builds on this by allowing the parallel execution of tests across different browsers and environments, which is particularly useful for cross-browser testing.
Workflow:
**Script Creation:**
A test script is written using the Selenium Python library. This script includes commands to initiate browser sessions, navigate to web pages, perform actions on web elements (like clicks, form submissions, and navigation), and verify expected outcomes.
**WebDriver Initialization:**
The script starts by initializing the WebDriver instance, which involves specifying the browser driver (e.g., ChromeDriver for Chrome).
**Browser Interaction:**
The WebDriver sends commands to the browser driver, which in turn controls the browser. Actions like opening URLs, clicking buttons, and filling out forms are performed at this stage.
**Command Execution and Response:**
The browser driver executes the commands and returns the results back to the WebDriver. The script can then assert these results to determine if the test has passed or failed.
**Result Logging and Reporting:**
The outcomes of the test are logged, and reports are generated. These can be integrated with testing frameworks for better management and analysis.
Example:
Here’s a simple example of a Selenium script in Python:
`from selenium import webdriver
from selenium.webdriver.common.keys import Keys`
# Initialize WebDriver
`driver = webdriver.Chrome(executable_path='/path/to/chromedriver')`
# Open a webpage
`driver.get("http://www.example.com")`
# Interact with web elements
`search_box = driver.find_element_by_name("q")
search_box.send_keys("Selenium Python")
search_box.send_keys(Keys.RETURN)`
# Verify results
`assert "No results found." not in driver.page_source`
# Close the browser
`driver.quit()`
**Significance of Python Virtual Environment**
A Python virtual environment is a self-contained directory that contains a Python installation for a particular version of Python, plus several additional packages. It’s a crucial tool for managing dependencies and ensuring a consistent development environment across different projects.
**Benefits and Importance:**
**Dependency Management:**
Virtual environments allow different projects to use different versions of the same package without conflict. This is essential when one project requires a specific version of a library that is incompatible with another project.
**Isolation:**
Each virtual environment is isolated from the system Python and other virtual environments. This prevents changes in one environment from affecting other projects or the system installation, ensuring stability and predictability.
**Reproducibility:**
Virtual environments make it easy to reproduce a working environment. By creating a requirements.txt file that lists all dependencies, you can recreate the environment on any machine, ensuring consistency across development, testing, and production stages.
**Simplified Collaboration:**
When working in a team, using a virtual environment ensures that all team members are working with the same versions of packages, reducing "it works on my machine" issues.
**
Security:**
By isolating dependencies, virtual environments reduce the risk of version conflicts and security vulnerabilities that can arise from globally installed packages.
**Examples:
**
**Creating a Virtual Environment:**
`python3 -m venv myenv`
This command creates a virtual environment named myenv.
**Activating a Virtual Environment:**
On Windows:
> myenv\Scripts\activate
**Installing Packages:**
Once activated, you can install packages specific to the project:
`pip install requests`
**Freezing Dependencies:**
To save the current environment’s packages into a requirements.txt file:
`pip freeze > requirements.txt`
Recreating the Environment:
On a new machine, you can set up the same environment using:
`pip install -r requirements.txt` | shivark2010 | |
1,870,607 | Understanding /var/run/docker.sock: The Key to Docker's Inner Workings 🐳 | If you're diving into Docker, one term you’ll encounter often is /var/run/docker.sock. But what is... | 0 | 2024-05-30T16:40:18 | https://dev.to/piyushbagani15/understanding-varrundockersock-the-key-to-dockers-inner-workings-nm7 | docker, containers, devops | If you're diving into Docker, one term you’ll encounter often is /var/run/docker.sock. But what is it, and why is it so important?
🔍 What is /var/run/docker.sock?
In simple terms, /var/run/docker.sock is a Unix socket file used by Docker to communicate with the Docker daemon (dockerd). This socket file acts as a bridge between your Docker client (like the Docker CLI) and the Docker daemon, enabling you to manage containers, images, networks, and more.
🔧 How Does It Work?
Communication Channel: Instead of using network-based protocols (like HTTP or TCP), Docker uses this Unix socket for efficient and secure communication between the client and the daemon on the same host.
API Access: All Docker commands you run via the CLI (docker run, docker ps, etc.) interact with the Docker daemon through this socket. Essentially, it’s the API endpoint for Docker operations.
🔐 Why Should You Care?
Understanding /var/run/docker.sock is crucial for advanced Docker operations:
Container Management: Tools like Docker Compose and various CI/CD systems use this socket to orchestrate and manage containers.
Security: Be cautious when granting access to this socket. Mounting /var/run/docker.sock inside a container provides that container with root-level access to the host’s Docker daemon, which can pose significant security risks.
💡 Practical Use Case
Ever wondered how to manage Docker from within a container? By mounting the Docker socket inside your container, you can.
Check out my blog on How to run docker in docker.
📈 The Bigger Picture
For developers and DevOps professionals, understanding how Docker operates under the hood, including the role of /var/run/docker.sock, is key to leveraging the full power of containerization. It opens up possibilities for automation, advanced orchestration, and efficient resource management.
Stay curious, and keep exploring the depths of Docker! 🌊🐳
Keep Learning, Keep Hustling. | piyushbagani15 |
1,870,606 | task 21 | from selenium import webdriver from selenium.webdriver.common.by import By from... | 0 | 2024-05-30T16:40:03 | https://dev.to/abul_4693/task-21-2n8p | from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
import time
# Function to display cookies
def display_cookies(driver):
cookies = driver.get_cookies()
print("Cookies:")
for cookie in cookies:
print(cookie)
# URL and login credentials
url = "https://www.saucedemo.com/"
username = "standard_user"
password = "secret_sauce"
# Start a new browser session
driver = webdriver.Chrome()
try:
# Open the URL
driver.get(url)
# Display cookies before login
print("Before login:")
display_cookies(driver)
# Login
username_field = driver.find_element(By.ID, "user-name")
username_field.send_keys(username)
password_field = driver.find_element(By.ID, "password")
password_field.send_keys(password)
login_button = driver.find_element(By.ID, "login-button")
login_button.click()
# Display cookies after login
print("After login:")
display_cookies(driver)
# Logout
logout_button = driver.find_element(By.ID, "logout_sidebar_link")
logout_button.click()
print("Logged out successfully.")
finally:
# Close the browser
driver.quit()
| abul_4693 | |
1,870,605 | FastAPI Beyond CRUD Part 3 - Buiding a CRUD REST API (CRUD, Response Models & HTTP Exceptions) | In this video, we build a CRUD REST API using the knowledge we obtained from the previous video. CRUD... | 0 | 2024-05-30T16:37:53 | https://dev.to/jod35/fastapi-beyond-crud-part-3-buiding-a-crud-rest-api-4fop | fastapi, api, python, webdev | In this video, we build a CRUD REST API using the knowledge we obtained from the previous video. CRUD stands for Create, Read, Update, and Delete. Four Operations that help us manipulate data in any application that may have a data store.
{%youtube W8D-crU5-Fc%} | jod35 |
1,870,604 | Django: Homepage | from: https://developer.mozilla.org/en-US/docs/Learn/Server-side/Django/Home_page Data flow... | 0 | 2024-05-30T16:37:05 | https://dev.to/samuellubliner/django-homepage-3lnh | webdev, django, python | from: https://developer.mozilla.org/en-US/docs/Learn/Server-side/Django/Home_page
## Data flow and handling HTTP requests and responses
- URL mappers direct URLs and information to view functions
- View functions retrieve data from models and render HTML
- Templates: Define HTML for displaying data.
## Creating the index page
`catalog/`
- index page
- includes counts of records in the database
## URL mapping
`locallibrary/urls.py`
- Processes URLs starting with `catalog/`
- `catalog.urls` processes the substring
The import function `django.urls.include()` splits the URL string and sends the substring to the URLconf module.
`/catalog/urls.py` is a placeholder for the URLConf module
`path()`
- Defines a URL pattern and associates it with a view function.
- The `name` parameter is a unique identifier for URL mapping.
- Use the `name` parameter to reverse the URL mapper and dynamically generate a URL that directs to a resource.
- Reversed URL mapping is more robust than hard-coded links.
- Use the name parameter to create links
## View
A view function
- Handles an HTTP request
- Retrieves necessary data from the database
- Generates an HTML page using a template to display the data
The first line in `catalog/views.py` imports `render()` to generate an HTML file.
The next line imports the model classes used to access data in views.
The view function 'index'
- Fetches the number of records using `objects.all()` on the model classes.
- Retrieves a collection of `BookInstance` objects where the status field is set to 'a' for available
- Calls the `render()` function to create an HTML page a return the page as a response.
The `context` variable is a dictionary, containing the placeholder data.
## Template
- A template defines the structure a file, such as an HTML page
- Use placeholders for content
In the index view from 'locallibrary/catalog/views.py', the `render()` function will expect to find `/django-locallibrary-tutorial/catalog/templates/index.html` or return an error.
## Extending templates
Declare a base template and extend it to replace different parts for each specific page.
Template tags
- loop through lists
- conditional operations
Template syntax
- Reference variables from the view
- Use filters to format variables
When defining a template specify the base template using the extends template tag. Then declare sections from the template to be replaced.
Our base template is `/django-locallibrary-tutorial/catalog/templates/base_generic.html`
The base template references `/django-locallibrary-tutorial/catalog/static/css/styles.css` that provides additional styling.
## The index template
`/django-locallibrary-tutorial/catalog/templates/index.html` starts by extending the base template and then customizes the default content block specific to the template's needs.
Template variables
- Placeholders for the information from the view
- Variables are enclosed with double brace handlebars
The names of the variables correspond to the keys provided in the context dictionary within the view's `render()` function.
## Referencing static files in templates
https://docs.djangoproject.com/en/5.0/howto/static-files/
Static resources include JavaScript, CSS, and images. You can specify the location in your templates relative to the `STATIC_URL` global setting. The default value of `STATIC_URL` is set to `'/static/'`. You can change it and host resources on a content delivery network.
To reference static files in a template, initially load the static template tag to include the template library. After that, use the static tag to provide the relative path to the desired file.
## Linking to URLs
The base template uses the url template tag.
This tag
- Takes the name of a `path()` function called in `urls.py`
- Accepts the values for arguments the associated view will receive
- Returns a URL used to link to the resource
## Configuring where to find the templates
https://docs.djangoproject.com/en/5.0/topics/templates/
Django searches for templates specified in the `TEMPLATES` object in the settings
In `settings.py` `'APP_DIRS': True` instructs Django to look for templates within a "templates" subdirectory inside each app of the project. You can also specify particular directories for Django to search by setting `'DIRS': []`.
## View my commits here:
https://github.com/Samuel-Lubliner/local-library-django-tutorial/commit/3727b04dd95abbdf4e6d974fb0da10e17b16176c
See:
[Writing your first Django app, part 3: Views and Templates](https://docs.djangoproject.com/en/5.0/intro/tutorial03/)
[URL dispatcher](https://docs.djangoproject.com/en/5.0/topics/http/urls/)
[View functions](https://docs.djangoproject.com/en/5.0/topics/http/views/)
[Templates](https://docs.djangoproject.com/en/5.0/topics/templates/)
[Managing static files](https://docs.djangoproject.com/en/5.0/howto/static-files/)
[Django shortcut functions](https://docs.djangoproject.com/en/5.0/topics/http/shortcuts/#django.shortcuts.render)
| samuellubliner |
1,870,603 | The Rise of AI-Powered Startups in 2024 | Accelerated Innovation AI-driven startups are rapidly innovating, bringing groundbreaking... | 0 | 2024-05-30T16:32:57 | https://dev.to/bingecoder89/the-rise-of-ai-powered-startups-in-2024-dlp | ai, startup, productivity, news | 1. **Accelerated Innovation**
- AI-driven startups are rapidly innovating, bringing groundbreaking solutions to various industries, from healthcare to finance.
2. **Enhanced Customer Experience**
- Startups are leveraging AI to personalize customer interactions, resulting in more tailored and efficient services.
3. **Cost Efficiency**
- AI technology helps startups automate routine tasks, significantly reducing operational costs and increasing scalability.
4. **Data-Driven Decision Making**
- AI-powered analytics enable startups to make informed decisions based on real-time data insights, leading to better business outcomes.
5. **Talent Attraction and Retention**
- Startups with cutting-edge AI technologies attract top talent interested in working on innovative projects and staying at the forefront of tech advancements.
6. **Investment Surge**
- There's a notable increase in venture capital investments in AI startups, driven by the potential for high returns and transformative impact.
7. **AI-as-a-Service (AIaaS)**
- Many startups are offering AI-as-a-Service platforms, providing businesses of all sizes access to advanced AI tools without the need for extensive in-house development.
8. **Ethical AI Development**
- The rise of AI startups comes with a growing emphasis on ethical AI, focusing on creating transparent, fair, and unbiased AI systems.
9. **Cross-Industry Applications**
- AI-powered startups are not limited to tech sectors; they are disrupting traditional industries like agriculture, manufacturing, and education with innovative AI solutions.
10. **Global Collaboration**
- Startups are forming global partnerships to leverage diverse expertise and markets, accelerating the adoption and development of AI technologies worldwide.
Happy Learning 🎉 | bingecoder89 |
1,870,602 | Minimally Invasive Magic: How Technology Makes Foot Surgery Less Scary | Foot surgery Even the word "foot surgery" can trigger a shiver through the back. Images of massive... | 0 | 2024-05-30T16:30:30 | https://dev.to/advance_footcentre_3cbcd/minimally-invasive-magic-how-technology-makes-foot-surgery-less-scary-2iag | techtalks, howto | Foot surgery Even the word "foot surgery" can trigger a shiver through the back. Images of massive incisions lengthy recovery times, and the lingering pain that follows. However, don't fret! With the advancement of technology has led to foot surgery having undergone radical changes that make it less difficult, more precise, and, in the end, less intimidating for patients.
## Minimally Invasive Magic:
The key to success lies in the concept of minimally invasive surgical (MIS). Traditional foot surgery usually involves massive incisions to reach an area for surgery. However, MIS makes use of smaller incisions and equipment, such as small cameras as well as surgical instruments. The instruments are aided by high-resolution images projected on a monitor which allows surgeons to perform operations with amazing precision, and without disturbance to the tissue.
## Benefits of Minimally Invasive [Foot Surgery in perth](https://advancedfootsurgerycentre.com.au/):
- Reduction of Scarring Incisions that are smaller result in less scarring. This translates into an earlier return to your most loved shoes.
- Speedier healing: Minimally invasive techniques reduce tissue damage, which results in faster healing time and faster return to your normal routine.
- Lower Pain Less incisions means less discomfort after surgery, which means an easier recovery.
- Better Outcomes: Advances in visualization technology enable surgeons to have an improved view of the surgical area, which results in more precise surgical procedures and ultimately better results.
## Technology Leading the Way:
A variety of technological advances make the minimally-invasive foot procedure feasible:
Arthroscopy The thin and flexible tubing with a camera enables surgeons to see the inside of the joint, making it easier to perform procedures like ACL fixes as well as bunion elimination.
fluoroscopy real-time imaging with X-rays assists surgeons during surgeries to ensure the exact implant or screw placement.
Robotic-Assisted Surgery Although it is still in the in the beginning stages of foot surgery, robots can give even more accuracy and control in complex procedures.
## The Takeaway:
Foot surgery shouldn't be a stressful procedure. The use of minimally invasive procedures that are powered by technology provide a more comfortable approach for patients. If you're experiencing foot pain that needs surgery, speak to your podiatrist about minimally surgical options that are offered. With the aid technological advancements, your road to healing can be faster as well as less painful. It will also leave little impressions on your return to your feet that are healthy. | advance_footcentre_3cbcd |
1,870,601 | 6 Opportunities You Can Capitalize on Using AI-powered Adaptive Learning | Forecasts show the growth of Artificial Intelligence in the educational domain for the following... | 0 | 2024-05-30T16:29:14 | https://dev.to/techpcmag/6-opportunities-you-can-capitalize-on-using-ai-powered-adaptive-learning-5f1l | webdev, aws, opensource, css | Forecasts show the growth of Artificial Intelligence in the educational domain for the following years, including one of the key trends – AI adaptive learning. That is evidence of favorable market conditions for disruptive ideas, new [AI-based educational](https://businesstaken.com/) startups, and new rounds of investments. In this article, we will consider which opportunities AI-powered adaptive learning uncovers for various organizations, including businesses, colleges, and schools.
****Faster Training Program Scaling**
**In the traditional learning model, a tailored approach is possible only for small classes. A mentor can’t dedicate time to each learner’s needs in big teams. When a company plans to increase its staff and scale the corporate training program for raised demands, it might be an inhibitor factor.
AI-based adaptive learning platforms enable companies to scale fast and without extra funding because they offer a personalized learning path without human mentoring in every interaction. A supervisor can be included in the learning process by request. This model doesn’t limit the number of employees, eliminating excess burdens for Learning and Development (L&D) departments.
**Optimized Costs for the Learning & Development Program
**People absorb information faster and easier when they have a teacher. A mentoring system is also important for acquiring new knowledge and skills in the corporate sphere. The National Mentoring Day survey proved that almost every responder considers this model to be effective. But imagine what happens when a company hires a personal mentor for each employee. Its expenses would increase at least two times.
By incorporating AI-powered adapting learning software in the corporate training program, companies can ensure each employee will have an individual digital mentor. Moreover, this teacher will know everything about a trainee in advance because of prompt analysis of their profile in a [Learning Management System](https://vpntechno.com/
) (LMS) or Learning Experience System (LXP). That is why its learning path will be adjusted for a learner’s current progress, interests, and goals.
**Enhanced Upskilling and Reskilling Process
**The well-built and smooth upskilling and reskilling process helps companies win the competition in the ever-evolving job market. New professions appear, and previous hard skills turn out to be outdated. The talent pool is limited because the market doesn’t manage to adapt to changing conditions.
An AI-based adaptive learning system allows organizations to follow trends and adjust their training programs for new challenges. The system is able to update the curriculum by parsing various databases and sources. For example, a legal training course can be improved by an up-to-date case law, which provides a company with a competitive edge in similar situations.
The government sector is also actively leveraging this opportunity. A US-based government agency created a 20-year forecast, keeping in mind such factors as demographic changes, innovative solutions for public transport, and self-driving car development. The project includes predictions about talent pool gaps in this domain. For example, the transport sphere might need more AI analysts, urban/rural mobility managers, or autonomy engineers. Being aware of such demands in advance, the organization can start optimizing its workforce already now.
**Boosted Learning Engagement
**An outdated educational system provides a unified learning format for whole classes. But the point is that each learner has their level of progress. When we talk about business, even people in the same positions might have different grades of competencies.
An AI adaptive learning platform enables people to follow their bespoke training path, filling in their gaps without rushing. For example, developers can address coding tasks according to their knowledge of the particular programming language. If they set a goal to learn a new language, the system will create an appropriate learning path to satisfy their interests and professional ambitions.
The system adjusts the learning process to trainees’ performance, turning back or moving forward based on individual results. Thus, people won’t get bored with the standard curriculum.
Attention to people's needs, interests, and individual advantages builds a rapport between employees and an organization. Thus, companies get more loyal and engaged personnel, ensuring the in-house culture of continuous learning.
**Accelerated Process of Acquiring Knowledge
**
Studying irrelevant learning materials can cause procrastination if people prefer to dedicate time effectively. Ultimately, people aim to avoid unpleasant learning processes, likely losing useful information as well.
The research found that organizations might decrease time for Learning and Development (L&D) by 50% on average by adopting AI adaptive learning systems. Firstly, employees don't waste time on already acquired knowledge and skills. Secondly, a tailored approach boosts their motivation, as described above.
Yet, the core competencies need periodical revising, because repeatedly accrued gaps are inappropriate in this case. To eliminate this risk, AI adaptive learning software uses algorithms to spot knowledge breaches and suggest learners refresh tasks. Ultimately, they consolidate their competencies and can apply them promptly when needed.
**Improved Assessment Process
**Both learners and mentors often don’t see tangible outcomes from assessment systems. The reason is that they assign grades without a step-by-step guideline of what and how to improve effectively.
In this case, leveraging an AI adaptive learning platform also can be helpful, because it provides mentors with detailed information about the weaknesses and strengths of their mentees. Learners get a thorough plan on where to move further. For instance, the United States Air Force and the United States Army implemented the system when each learner gets a training program tailored to their strengths.
Bottom Lines
Nowadays, the educational landscape demands new approaches to acquiring knowledge. Both public and private sectors face many challenges, such as scaling limitations, rapidly outdated competencies, low engagement, a poor assessment system, etc. By implementing adaptive learning AI technology in education, organizations can successfully overcome these handicaps.
| techpcmag |
1,754,152 | Simple KV storage on top of indexedDB | If your client-side application ever needs to persist a larger portion of data, it's no longer... | 0 | 2024-05-30T16:25:53 | https://dev.to/fkrasnowski/simple-kv-storage-on-top-of-indexeddb-3jcg | javascript, webdev, typescript, programming | If your client-side application ever needs to persist a larger portion of data, it's no longer suitable to put it inside a `localStorage` entry. The first thing that comes into mind is to use indexedDB. But then you have to manage transactions, versioning, etc.
Sometimes all you need may be a straightforward key-value store, that hides those intricacies inside, like:
```javascript
const kv = await openKV("kv");
await kv.set(key, value);
const data = await kv.get(key);
```
What is stopping you from building one?
Let's get to work!
## Opening up
Working with indexedDB API is not especially pleasant. It's taken straight from the primal age of JavaScript. If you're looking for a more civilized API to digest - check out [`idb`](https://github.com/jakearchibald/idb) - it enhances the indexedDB API with promises and shortcuts for common operations
But in this post, we're not afraid of the tears and pain of the past
### Opening up (the database)
First, we need to open a new connection request. Then attach handlers for `success` and `error` events. Everything is enclosed within a compact Promise:
```typescript
const STORE_NAME = "store";
const openKVDatabase = (dbName: string) =>
new Promise<IDBDatabase>((resolve, reject) => {
const request = indexedDB.open(dbName);
request.onsuccess = () => {
resolve(request.result);
};
request.onerror = () => {
reject("indexedDB request error");
};
request.onupgradeneeded = () => {
request.result.createObjectStore(STORE_NAME, { keyPath: "key" });
};
});
```
`upgradeneeded` event will be fired once the database is created (or when its version gets updated). Inside this handler, we can create our one and only store - the KV store. I've put `STORE_NAME` in a constant as we'll need to use it in multiple places later on
## First ~~blood~~ methods
Let's scaffold a basic shape for `get`, `set`, and `delete` methods. They will correspond to indexDB **_objectStore_** operations consequently: `get`, `put`, and `delete`
```typescript
export async function openKV<T = unknown>(dbName: string) {
const db = await openKVDatabase(dbName);
const openStore = () => {
return db.transaction(STORE_NAME, "readwrite").objectStore(STORE_NAME);
};
return {
async get(key: string) {},
async set(key: string, value: T) {},
async delete(key: string) {},
};
}
```
`openStore` helper function opens up a new transaction and returns the handle for our KV store
### Requests as promised
One more thing needs to be done before implementing the methods. `objectStore` methods return [IDBRequest](https://developer.mozilla.org/en-US/docs/Web/API/IDBRequest) object. This object achieves the same goal as a promise (it's like a goofy version of it). Let's create a utility that will map them into promises - so we can `await` them:
```typescript
function idbRequestToPromise<T>(request: IDBRequest<T>) {
return new Promise<T>((resolve, reject) => {
request.onsuccess = () => resolve(request.result);
request.onerror = () => reject(request.error);
});
}
```
### Methods
```typescript
async get(key: string): Promise<T | undefined> {
const pair: Pair | undefined = await idbRequestToPromise(
openStore().get(key)
);
return pair?.value as T | undefined;
},
async set(key: string, value: T) {
const pair: Pair = { key, value };
await idbRequestToPromise(openStore().put(pair));
},
delete(key: string) {
return idbRequestToPromise(openStore().delete(key));
},
```
The `Pair` type used here is just:
```typescript
type Pair<T = unknown> = { key: string; value: T };
```
## You got to pump it up
As you probably noticed opening a new transaction every time we perform a single key value operation is suboptimal. Consider this snippet:
```javascript
for (const item of arr) {
kv.set(item.id, item);
}
```
To handle an array of 1000 items, we need to open 1000 transactions. If the operations are executed in a single task (triggered synchronously) as in the example above, grouping them into a single transaction (_aka_ batching) could improve efficiency. Let's verify if this assumption holds true
### Batching
To implement batching, we need to update the `openStore` function a little bit
```typescript
const db = await openKVDatabase(dbName);
// Create 'store' variable to share it between calls
let store: IDBObjectStore | null;
const openStore = () => {
if (!store) {
store = db.transaction(STORE_NAME, "readwrite").objectStore(STORE_NAME);
queueMicrotask(() => {
// Finish the transaction after the current task ends
store?.transaction?.commit();
store = null;
});
}
return store;
};
```
> `queueMicrotask` allows running code after the current task has been executed (microtasks are run between regular tasks). Learn more [here](https://developer.mozilla.org/en-US/docs/Web/API/HTML_DOM_API/Microtask_guide).
#### Testing
I used [`tinybench`](https://github.com/tinylibs/tinybench) to prepare a basic test case like so:
```typescript
Promise.all(arr.map((v) => kv.set(v, v)));
```
Where `arr` is a 1000-element array of strings
##### Results
Unsurprisingly there is a small improvement over the 1000 transaction version:
```markdown
| 1000 transactions | batching |
| ----------------- | ------------ |
| 7 (ops/sec) | 32 (ops/sec) |
```
### Transactions
Okay, so when I run queries synchronously, they will be put into a single transaction. But what about the original reason for inventing database transactions? It was to group queries together into one to ensure consistency. Check out this code:
```typescript
async function inc() {
await kv.set("x", (await kv.get("x")) + 1);
}
```
It would only make sense if both `set` and `get` operations would form a single transaction
#### Async / await tracking
Unfortunately, APIs like `AsyncLocalStorage` that are available in server runtimes including _Node.js,_ _Deno_, and _Bun_, that would allow us to track async context are not (yet) available in the browsers. However, we can hook into async / await by leveraging custom `Thenables` and microtasks scheduling...
> If you are interested in learning more about tracking asynchronous contexts, you can check out [proposal-async-context](https://github.com/tc39/proposal-async-context#async-context-for-javascript) - the official ECMAScript proposal that addresses this particular issue
##### ...and then
Userland `Thenables` can be awaited just like `Promises`. The key difference if it comes to `Thenables` is that “_then_” method is always executed when used in async / await code. This allows us to intercept the async execution of the code and inject hooks before and after the continuation of the async / await block. Here's my attempt at doing that:
```typescript
export class Thenable<T> {
constructor(
private promise: Promise<T>,
private hooks?: {
before?: () => void;
after?: () => void;
}
) {}
then<U>(onFulfilled: (value: T) => U): Thenable<U> {
return new Thenable(
this.promise.then((value) => {
this.hooks?.before?.();
const result = onFulfilled(value);
queueMicrotask(() => this.hooks?.after?.());
return result;
}),
this.hooks
);
}
}
```
> Notice how _after_ hook is pushed into the microtask queue. It's because calling `onFulfilled` will push continuation to the queue itself - this way _after_ hook is called after the _continuation_ microtask
#### Sharing current transaction
Taking up _before_ and after _hooks_, we can now make the current transaction accessible from within adjacent queries. Here's the type of the transaction object that will be shared:
```typescript
type Transaction = {
store: IDBObjectStore;
committed?: boolean;
lastQueried?: boolean;
};
```
`commited` and `lastQueried` flags will be used to implement auto-committing of the transaction. All queries will now be wrapped in a `query` function to handle sharing.
```typescript
const query = <R>(
fn: (transaction: Transaction<T>) => Promise<R>
): Thenable<R> => {
const transaction = (currentTransaction ??= {
store: db.transaction(STORE_NAME, "readwrite").objectStore(STORE_NAME),
});
// Clear current transaction after current task
queueMicrotask(() => {
currentTransaction = null;
});
const result = fn(transaction);
return new Thenable(result, {
before() {
// Resume transaction before the continuation
currentTransaction = transaction;
},
after() {
currentTransaction = null;
},
});
};
```
And the example of usage:
```typescript
set(key: string, value: T) {
// Wrap handler with query
return query(async ({ store }) => {
const pair = { key, value };
await idbRequestToPromise(store.put(pair));
});
},
```
#### Auto-commiting
After the series of queries, it would be great to handle commiting automatically. The `lastQueried` flag will indicate if the queries were executed last microtasks:
```typescript
const query = <R>(
fn: (transaction: Transaction<T>) => Promise<R>
): Thenable<R> => {
const transaction: Transaction<T> = (currentTransaction ??= {
store: db.transaction(STORE_NAME, "readwrite").objectStore(STORE_NAME),
});
// Running `query` will reset the flag
transaction.lastQueried = true;
queueMicrotask(() => {
currentTransaction = null;
});
const result = fn(transaction);
return new Thenable(result, {
before() {
currentTransaction = transaction;
transaction.lastQueried = false;
},
after() {
// If there were no new queries during the last microtask
if (!transaction.lastQueried && !transaction.committed) {
transaction.store.transaction.commit();
transaction.committed = true;
}
currentTransaction = null;
},
});
};
```
#### Admiring the results
Look at that and think:
```typescript
async function inc() {
await kv.set("x", (await kv.get("x")) + 1);
}
```
The function above now forms a single ACID transaction!
## Summing Up
The indexedDB is not the easiest API to work with. It's not the fastest horse in the stable either. It's probably a good idea to use some of the popular wrapper libraries like `idb` or [`Dexie.js`](https://dexie.org/). That will simplify and streamline the process of working with it. There is also [`idbkeyval`](https://github.com/jakearchibald/idb-keyval?tab=readme-ov-file) - **super**-simple key-value store (but without automatic batching and transactions 🙊). Still, implementing your own wrapper may be great fun and will definitely help you understand better how it works
| fkrasnowski |
1,870,600 | 30 days coding challenge | Starting my 30 days coding challenge along Ethical Hacking tomorrow!! | 0 | 2024-05-30T16:25:53 | https://dev.to/francis_ngugi/30-days-coding-challenge-4ick | Starting my 30 days coding challenge along Ethical Hacking tomorrow!!
| francis_ngugi | |
1,870,592 | A Walk Through Client-Side Form Validation in HTML | What is Form Validation? Have you ever encountered a form on a website that returns an... | 0 | 2024-05-30T16:25:25 | https://dev.to/odhiambo_ouko/a-walk-through-client-side-form-validation-in-html-1l1p | webdev, beginners, tutorial, programming | ##What is Form Validation?
Have you ever encountered a form on a website that returns an error message when you provide the wrong details or don’t input some information? The error messages can include:
- Username not found
- Incorrect password. Try again!
- Please fill in this field
- Your passcode should have eight characters
When you key in data into a form, the browser or website will check the provided information to see if it matches the required format. The application will accept the input and continue running if the data is correct and in the proper format. On the other hand, the application will cease running and return an error message if the details are incorrect. This process is known as form validation.
##Types of Form Validation
There are two types of form validation: server-side form validation and client-side form validation.
###Server-Side Validation
Server-side validation occurs when data is sent to a server from the browser for validation. A perfect scenario of server-side validation is a credit card form that accepts user input and then sends the data to a server to confirm the card is valid and has enough balance to make a particular transaction.
####Pros of Server-Side Validation
1. Dynamic Validation – Server-side validation is more flexible because it can access databases and conduct complex validations.
2. Consistent and Compatible Validation – Unlike client-side validation, server-side validation works properly across different devices, browsers, and sites.
3. Increased Security – Server-side validation is more secure because it prevents invalid data or malicious input from entering a database.
####Cons of Server-Side Validation
1. Reduced Response Time – The Request and response processes between the browser and server reduce the response time in server-side validation.
2. Poor User Experience – Poor response time and users’ inability to immediately determine the valid options negatively affect user experience.
###Client-Side Validation
On the other hand, client-side validation involves checking data on the browser before sending it to the server. This type of validation is essential in ensuring the data a user submits conforms to all the requirements stipulated by various form controls. A good example is a registration form requiring users to enter their details and a short bio.
####Pros of Client-Side Validation
1. Quick Feedback – Since client-side validation happens on the user’s computer, it quickly provides feedback to the user without reloading the page.
2. Data Accuracy – By detecting wrong inputs and alerting the users, client-side validation ensures the data collected is accurate.
3. Improved User Experience – Giving users instant feedback when using a form enhances user experience.
4. Reduced server load and bandwidth – Client-side validation only accepts valid data, therefore decreasing a browser’s server load and bandwidth.
####Cons of Client-Side Validation
1. Security Concerns – Client-side form validation is less secure since it can’t process an application from attacks in a database or server.
2. Easy to Dodge – Users can bypass client-side validation by disabling JavaScript or manipulating the document object model (DOM).
##HTML Built-In Form Controls
Client-side form validation can be achieved using HTML or JavaScript. HTML makes use of several form controls to help you implement effective client-side validation for your users.
###Requiring an Input
When a specific field must be filled before submitting a form, we can use the required attribute in the input element. This attribute doesn’t need a value like other built-in form controls.
```html
<form>
<label for="name">Name<label>
<input id="name" required>
</form>
```
###Specifying Minimum and Maximum Values
Another built-in form control we can use is the minimum or maximum attributes in a number field. The attributes specify the minimum and maximum numerical values a user can select or enter in a form.
```html
<form>
<label for ="guests">Number of guests</label>
<input id="guests" min="2" max="10" required>
</form>
```
###Indicating Type
This form control specifies the data type a user needs to input, whether an email address, a number, a text, or any other type. We use the type attribute and set its value to number, text, email, or password.
```html
<form>
<label for ="age">Age</label>
<input id="age" type="number" required>
</form>
```
###Constraining Text Length
We can use the minlength and maxlength attributes to set the minimum and maximum characters for a text area.
```html
<form>
<textarea>Introduce yourself in less than 250 characters…</textarea>
<input type="text" minlength="50" maxlength="250" required>
</form>
```
###Matching Text Pattern
Lastly, we can create a regular expression or regex that users must match when entering data. The form can only pass when the user’s input aligns with the preset regex. In this case, we use the pattern attribute and give it a regex.
```html
<form>
<label for = "telephone">Enter your phone number</label>
<input id="telephone" type="number" pattern="[0-9] {10}"/>
</form>
```
##Bottom Line
In this article, we exclusively discussed form validation in HTML. We also shed some light on the difference between server-side and client-side validation and outlined their respective pros and cons. Finally, we covered the most common built-in form controls used to validate forms on the client’s side. Applying server-side validation is significant for ensuring data accuracy, improving security, and improving user experience. You must also validate data on the server side.
| odhiambo_ouko |
1,870,599 | Beyond Imagination: The Potential of AI in Digital Artistry | Embark on a thrilling journey into the realm of digital artistry, where imagination meets technology!... | 0 | 2024-05-30T16:24:18 | https://dev.to/bxck75/beyond-imagination-the-potential-of-ai-in-digital-artistry-1o9k | ai, tutorial, programming, python |
Embark on a thrilling journey into the realm of digital artistry, where imagination meets technology!
Have you ever dreamed of breathing life into characters straight from the pages of your favorite novel or
conjuring up fantastical creatures with the click of a button? Introducing the dazzling world of text-to-image synthesis,
where AI-powered sprite makers turn your words into captivating visual masterpieces. Inspired by the fusion of art, storytelling,
and cutting-edge deep learning, this innovative tool unlocks endless possibilities for game developers, artists, and creative minds alike.
Imagine crafting pixel-perfect sprites for your next indie game, designing dynamic avatars for virtual worlds,
Block 1: Setting the Stage - Imports and Setup
Welcome to the adventure! Before we begin, we need to gather our trusty tools. In this block,
we'll import the necessary libraries for image processing, text processing, deep learning, visualization, and logging.
The Quest Begins
import torch
import os
from glob
Embark on a thrilling journey into the realm of digital artistry, where imagination meets technology!
Have you ever dreamed of breathing life into characters straight from the pages of your favorite novel or
conjuring up fantastical creatures with the click of a button? Introducing the dazzling world of text-to-image synthesis,
where AI-powered sprite makers turn your words into captivating visual masterpieces. Inspired by the fusion of art, storytelling,
and cutting-edge deep learning, this innovative tool unlocks endless possibilities for game developers, artists, and creative minds alike.
Imagine crafting pixel-perfect sprites for your next indie game, designing dynamic avatars for virtual worlds,
Block 1: Setting the Stage - Imports and Setup
Welcome to the adventure! Before we begin, we need to gather our trusty tools. In this block,
we'll import the necessary libraries for image processing, text processing, deep learning, visualization, and logging.
The Quest Begins
```
import torch
import os
from glob import glob
from torch import nn, optim
from torch.utils.data import DataLoader, Dataset
from torchvision import models, transforms
from transformers import VisionEncoderDecoderModel, ViTImageProcessor, AutoModel, AutoTokenizer
import numpy as np
from PIL import Image
import matplotlib.pyplot as plt
from sklearn.decomposition import PCA
from rich import print as rp
import wandb
wandb.init(project="spritemaker", entity="goldenkooy")
```
What's Next??
Now that we have our tools, let's move on to the next block where we'll define our text and image encoder classes.
Block 2: The Encoders - Text and Image
In this block, we'll create two encoder classes: TextEncoder and ImageEncoder.
These classes will be responsible for processing our text and image data.
The Text Encoder:
Meet the TextEncoder class, which uses a pre-trained BERT model to convert textual descriptions into numerical representations.
Initialize the TextEncoder with a model name (default is bert-base-uncased).
Use the AutoTokenizer and AutoModel from transformers to load the pre-trained BERT model and tokenizer.
Set the model to evaluation mode (.eval()) to avoid weight updates during training.
Define the encode_text method, which takes a text input and returns the last hidden state of the BERT model.
```
class TextEncoder:
def __init__(self, model_name='bert-base-uncased'):
self.tokenizer = AutoTokenizer.from_pretrained(model_name, cache_dir='./models')
self.model = AutoModel.from_pretrained(model_name, cache_dir='./models')
self.model.eval()
def encode_text(self, text):
with torch.no_grad():
inputs = self.tokenizer(text, return_tensors="pt", padding=True, truncation=True)
outputs = self.model(**inputs)
return outputs.last_hidden_state[:, 0, :]
```
The Image Encoder
Say hello to the ImageEncoder class, which uses a pre-trained ResNet model to extract features from images.
Initialize the ImageEncoder with no arguments.
Load a pre-trained ResNet50 model from torchvision and set it to evaluation mode (.eval()) to avoid weight updates during training.
Define the encode_image method, which takes an image path as input and returns the extracted features.
```
class ImageEncoder:
def __init__(self):
self.model = models.resnet50(weights=models.ResNet50_Weights.IMAGENET1K_V2)
self.model.eval()
self.transform = transforms.Compose([
transforms.Resize((224, 224)),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
])
def encode_image(self, image_path):
image = Image.open(image_path).convert('RGB')
image = self.transform(image)
image = image.unsqueeze(0) # Add batch dimension
with torch.no_grad():
features = self.model(image)
return features
```
What's Next??
Now that we have our encoders, let's move on to the next block where we'll create a dataset class to store our image and text data. Stay tuned!
Block 3: The Dataset - Sprite and Text
In this block, we'll create a dataset class called SpriteTextDataset that will store our image and text data.
The Dataset Class
Initialize the SpriteTextDataset class with an image directory, a text directory, an image encoder, and a text encoder.
Load all image paths from the image directory using glob.
Iterate through the image paths and load descriptions from the text directory. Pair each image with its corresponding description.
Define the __len__ method to return the total number of images in the dataset.
Define the __getitem__ method to return a tuple containing the image path and the encoded text for a given index.
```
class SpriteTextDataset(Dataset):
def __init__(self, image_dir, text_dir, image_encoder, text_encoder):
self.image_encoder = image_encoder
self.text_encoder = text_encoder
self.data = []
# Load all image paths
image_paths = glob(os.path.join(image_dir, '*.png'))
# Debug: print the found image paths
rp(f"Found image paths: {image_paths}")
# Load descriptions and pair them with images
for image_path in image_paths:
base_filename = os.path.splitext(os.path.basename(image_path))[0]
text_path = os.path.join(text_dir, f"{base_filename}.txt")
if os.path.exists(text_path):
with open(text_path, 'r', encoding='utf-8') as file:
description = file.read().strip()
self.data.append((image_path, description))
else:
rp(f"Warning: No description file found for {image_path}")
# Debug: print the dataset size
rp(f"Dataset size: {len(self.data)}")
def __len__(self):
return len(self.data)
def __getitem__(self, idx):
image_path, description = self.data[idx]
image_features = self.image_encoder.encode_image(image_path)
text_features = self.text_encoder.encode_text(description)
return image_features, text_features
```
What's Next??
Now that we have our dataset class, let's move on to the next block where we'll create a data loader to load our dataset in batches.
This will help us train our model efficiently. Stay tuned!
Block 4: The Data Loader - Sprite and Text
In this block, we'll create a data loader to load our dataset in batches. This will help us train our model efficiently.
The Data Loader
Initialize the data loader with our dataset, batch size, and number of workers.
Define the dataset attribute to store our dataset instance.
Define the batch_size attribute to store the batch size.
Define the num_workers attribute to store the number of workers.
Use the DataLoader class from torch.utils.data to create a data loader instance.
Set the dataset attribute to our dataset instance.
Set the batch_size attribute to the batch size.
Set the num_workers attribute to the number of workers.
```
class SpriteTextDataLoader:
def __init__(self, dataset, batch_size, num_workers):
self.dataset = dataset
self.batch_size = batch_size
self.num_workers = num_workers
self.data_loader = DataLoader(dataset, batch_size=batch_size, num_workers=num_workers)
def __iter__(self):
return iter(self.data_loader)
def __len__(self):
return len(self.data_loader)
```
Using the Data Loader
Create an instance of the SpriteTextDataLoader class, passing in our dataset, batch size, and number of workers.
Use the __iter__ method to iterate over the data loader in batches.
Use the __len__ method to get the total number of batches in the data loader.
```
data_loader = SpriteTextDataLoader(sprite_text_dataset, batch_size=32, num_workers=4)
for batch in data_loader:
images, texts = batch
# Train our model on the batch
```
What's Next??
Now that we have our data loader, let's move on to the next block where we'll define our model architecture. This will be the core of our sprite maker. Stay tuned!
Block 5: The Model - Sprite Maker
In this block, we'll define our model architecture, which will be responsible for generating sprites based on the input text and image features.
The Model Architecture
Our model will consist of a text encoder, an image encoder, and a sprite generator.
The text encoder will take in the input text and output a sequence of tokens.
The image encoder will take in the input image features and output a sequence of features.
The sprite generator will take in the output of the text and image encoders and output a sprite image.
The Text Encoder
We'll use a pre-trained BERT model as our text encoder.
The text encoder will be responsible for converting the input text into a sequence of tokens.
The Image Encoder
We'll use a pre-trained ResNet50 model as our image encoder.
The image encoder will be responsible for converting the input image features into a sequence of features.
The Sprite Generator
We'll use a neural network with a convolutional layer and a deconvolutional layer to generate the sprite image.
The sprite generator will take in the output of the text and image encoders and output a sprite image.
```
class SpriteMaker(nn.Module):
def __init__(self, text_encoder, image_encoder, sprite_generator):
super(SpriteMaker, self).__init__()
self.text_encoder = text_encoder
self.image_encoder = image_encoder
self.sprite_generator = sprite_generator
def forward(self, text, image):
text_features = self.text_encoder(text)
image_features = self.image_encoder(image)
sprite_features = torch.cat((text_features, image_features), dim=1)
sprite = self.sprite_generator(sprite_features)
return sprite
```
What's Next??
Now that we have our model architecture defined, let's move on to the next block where we'll train our model using the data loader we created earlier. Stay tuned!
Block 6: Training the Model - Sprite Maker
In this block, we'll train our model using the data loader we created earlier.
Training the Model
We'll use the train method of our model to train it on the data loader.
We'll set the model to training mode using the train attribute.
We'll define a loss function and an optimizer to update the model's weights during training.
We'll iterate over the data loader in batches and update the model's weights using the optimizer and loss function.
```
def train_model(model, data_loader, optimizer, loss_fn):
model.train()
total_loss = 0
for batch in data_loader:
images, texts = batch
images = images.to(device)
texts = texts.to(device)
optimizer.zero_grad()
outputs = model(texts, images)
loss = loss_fn(outputs, targets)
loss.backward()
optimizer.step()
total_loss += loss.item()
print(f"Training loss: {total_loss / len(data_loader)}")
```
Defining the Loss Function and Optimizer
We'll use the mean squared error (MSE) as our loss function.
We'll use the Adam optimizer to update the model's weights during training.
```
loss_fn = nn.MSELoss()
optimizer = optim.Adam(model.parameters(), lr=0.001)
Training the Model
We'll train our model for 5 epochs using the train_model function.
We'll print the training loss at each epoch.
for epoch in range(5):
train_model(model, data_loader, optimizer, loss_fn)
print(f"Epoch {epoch+1}, Training loss: {total_loss / len(data_loader)}")
```
What's Next??
Now that we have trained our model, let's move on to the next block where we'll evaluate its performance on a test set. Stay tuned!
Block 7: Evaluating the Model - Sprite Maker
In this block, we'll evaluate the performance of our trained model on a test set.
Evaluating the Model
We'll use the eval method of our model to evaluate it on the test set.
We'll set the model to evaluation mode using the eval attribute.
We'll iterate over the test set in batches and calculate the loss and accuracy of the model.
We'll print the results to the console.
```
def evaluate_model(model, test_loader):
model.eval()
total_loss = 0
correct = 0
with torch.no_grad():
for batch in test_loader:
images, texts = batch
images = images.to(device)
texts = texts.to(device)
outputs = model(texts, images)
loss = loss_fn(outputs, targets)
total_loss += loss.item()
_, predicted = torch.max(outputs, 1)
correct += (predicted == targets).sum().item()
accuracy = correct / len(test_loader.dataset)
print(f"Test Loss: {total_loss / len(test_loader)}")
print(f"Test Accuracy: {accuracy:.2f}")
```
Testing the Model
We'll test our model on the test set using the evaluate_model function.
We'll print the test loss and accuracy to the console.
```
test_loss, test_accuracy = evaluate_model(model, test_loader)
print(f"Test Loss: {test_loss:.2f}")
print(f"Test Accuracy: {test_accuracy:.2f}")
```
What's Next??
Now that we have evaluated our model, let's move on to the next block where we'll use the model to generate sprites. Stay tuned!
Block 8: Generating Sprites - Sprite Maker
In this block, we'll use our trained model to generate sprites based on the input text and image features.
Generating Sprites
We'll use the forward method of our model to generate a sprite based on the input text and image features.
We'll set the model to evaluation mode using the eval attribute.
We'll create a new sprite by applying the sprite generator to the output of the text and image encoders.
We'll save the generated sprite to a file.
```
def generate_sprite(model, text, image):
model.eval()
text_features = text_encoder(text)
image_features = image_encoder(image)
sprite_features = torch.cat((text_features, image_features), dim=1)
sprite = model.sprite_generator(sprite_features)
sprite = sprite.cpu().numpy()
sprite = Image.fromarray(sprite)
sprite.save("generated_sprite.png")
```
Generating a Sprite
We'll generate a sprite using the generate_sprite function.
We'll pass in the input text and image features as arguments.
We'll save the generated sprite to a file named "generated_sprite.png".
```
text = "Hello, world!"
image = Image.open("image.png")
generate_sprite(model, text, image)
```
What's Next??
Now that we have generated a sprite, let's move on to the final block where we'll discuss the results and potential improvements to our sprite maker. Stay tuned!
Block 9; Dataset structure and expansion and instructions - Easy does it!
Expanding your text-to-image synthesis model's capabilities has never been easier!
To introduce a new set of sprites to the training data, simply drag the new sheet image in the training_data/spritesheets folder. For example, if you have a new set of fantasy creatures, name the file something like fantasy_creatures.png.
Automated descriptive Text Generation:
In our streamlined workflow, there's no need to create the corresponding text descriptions manually.
Our setup intelligently handles this for you! At execution, a locally run GPT-2 model, guided by a powerful vision model, will automatically generate descriptive text for each sprite in the new spritesheet.
In addition to handling spritesheets, our versatile framework seamlessly incorporates individual sprite images into the training process. Here's how to effortlessly add a single sprite and
integrate it into your next training run.
Add the Single Sprite Image:
Save the new sprite image in the training_data/spritesheets folder. For instance, you can name it unique_sprite.png.
Like with spritesheets,
The vision model extracts visual features,
GPT-2 generates a descriptive text for the sprite.
The text file, named unique_sprite.txt,
is then saved in the texts folder.
As for monitoring the performance and fine-tuning the model, we've got you covered with
seamless integration of theWeights & Biases (WandB) framework
With WandB, you gain real-time insights into your model's performance during each training epoch.
It visually displays training metrics, enabling you to track progress and compare results across different runs.
Hyperparameter Tuning:
WandB's powerful interface lets you experiment with various hyperparameters and observe their impact on model performance. This streamlined process allows you to optimize your model more efficiently, ensuring the best results for your text-to-image synthesis tasks.
In summary, adding single sprite images to your dataset is as simple as placing them in the correct folder. The automated text generation and seamless integration with WandB streamline the entire workflow, providing valuable insights and the ability to fine-tune your model for even better results. Embark on this exciting journey, witnessing your AI-generated sprites evolve with each training run!
Now, fire up the training script, sit back,
and witness your model's newfound ability to bring even more imaginative characters to life with the power of AI-driven text generation!
Block 9: Future Work - Sprite Maker
In this final block, we'll discuss the results of our sprite maker and potential improvements.
Results:
Our sprite maker has successfully generated a sprite based on the input text and image features.
The generated sprite is a 256x256 pixel image that represents a simple sprite character.
The sprite maker has achieved an accuracy of 90% on the test set.
Conclusion
In this tutorial, we have learned how to build a sprite maker using PyTorch and Python.
We have trained a sprite maker on a dataset of text and image features and evaluated its performance on a test set.
We have also used the sprite maker to generate a sprite based on the input text and image features.
What's Next??
Full script:
```
import torch
import os
from glob import glob
from torch import nn, optim
from torch.utils.data import DataLoader, Dataset
from torchvision import models, transforms
from transformers import VisionEncoderDecoderModel, ViTImageProcessor, AutoModel, AutoTokenizer
import numpy as np
from PIL import Image
import matplotlib.pyplot as plt
from sklearn.decomposition import PCA
from rich import print as rp
import wandb
# Initialize WandB
wandb.init(project="spritemaker", entity="goldenkooy")
# Text encoder class
class TextEncoder:
def __init__(self, model_name='bert-base-uncased'):
self.tokenizer = AutoTokenizer.from_pretrained(model_name, cache_dir='./models')
self.model = AutoModel.from_pretrained(model_name, cache_dir='./models')
self.model.eval()
def encode_text(self, text):
with torch.no_grad():
inputs = self.tokenizer(text, return_tensors="pt", padding=True, truncation=True)
outputs = self.model(**inputs)
return outputs.last_hidden_state[:, 0, :]
# Image encoder class
class ImageEncoder:
def __init__(self):
self.model = models.resnet50(weights=models.ResNet50_Weights.IMAGENET1K_V2)
self.model.eval()
self.transform = transforms.Compose([
transforms.Resize((224, 224)),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
])
def encode_image(self, image_path):
image = Image.open(image_path).convert('RGB')
image = self.transform(image)
image = image.unsqueeze(0) # Add batch dimension
with torch.no_grad():
features = self.model(image)
return features
# Sprite and text dataset class
class SpriteTextDataset(Dataset):
def __init__(self, image_dir, text_dir, image_encoder, text_encoder):
self.image_encoder = image_encoder
self.text_encoder = text_encoder
self.data = []
# Load all image paths
image_paths = glob(os.path.join(image_dir, '*.png'))
# Debug: rp the found image paths
rp(f"Found image paths: {image_paths}")
# Load descriptions and pair them with images
for image_path in image_paths:
base_filename = os.path.splitext(os.path.basename(image_path))[0]
text_path = os.path.join(text_dir, f"{base_filename}.txt")
if os.path.exists(text_path):
with open(text_path, 'r', encoding='utf-8') as file:
description = file.read().strip()
self.data.append((image_path, description))
else:
rp(f"Warning: No description file found for {image_path}")
# Debug: rp the dataset size
rp(f"Dataset size: {len(self.data)}")
def __len__(self):
return len(self.data)
def __getitem__(self, idx):
image_path, text = self.data[idx]
image_features = self.image_encoder.encode_image(image_path)
text_features = self.text_encoder.encode_text(text)
combined_features = torch.cat((image_features, text_features), dim=1)
return combined_features
# Descriptor class for generating descriptions
class Descriptor:
def __init__(self, cache_dir="./models"):
self.model = VisionEncoderDecoderModel.from_pretrained(
"nlpconnect/vit-gpt2-image-captioning", cache_dir=cache_dir
)
self.feature_extractor = ViTImageProcessor.from_pretrained(
"nlpconnect/vit-gpt2-image-captioning", cache_dir=cache_dir
)
self.tokenizer = AutoTokenizer.from_pretrained(
"nlpconnect/vit-gpt2-image-captioning", cache_dir=cache_dir
)
self.device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
self.model.to(self.device)
self.max_length = 16
self.num_beams = 4
self.gen_kwargs = {"max_length": self.max_length, "num_beams": self.num_beams}
def describe_image(self, image_path):
image = Image.open(image_path)
if image.mode != "RGB":
image = image.convert(mode="RGB")
pixel_values = self.feature_extractor(images=image, return_tensors="pt").pixel_values
pixel_values = pixel_values.to(self.device)
output_ids = self.model.generate(pixel_values, **self.gen_kwargs)
description = self.tokenizer.decode(output_ids[0], skip_special_tokens=True).strip()
return description
# VAE model class
class VAE(nn.Module):
def __init__(self, input_dim, latent_dim):
super(VAE, self).__init__()
self.fc1 = nn.Linear(input_dim, 512)
self.fc21 = nn.Linear(512, latent_dim)
self.fc22 = nn.Linear(512, latent_dim)
self.fc3 = nn.Linear(latent_dim, 512)
self.fc4 = nn.Linear(512, input_dim)
def encode(self, x):
h1 = torch.relu(self.fc1(x))
return self.fc21(h1), self.fc22(h1)
def reparameterize(self, mu, logvar):
std = torch.exp(0.5 * logvar)
eps = torch.randn_like(std)
return mu + eps * std
def decode(self, z):
h3 = torch.relu(self.fc3(z))
return torch.sigmoid(self.fc4(h3))
def forward(self, x):
mu, logvar = self.encode(x)
z = self.reparameterize(mu, logvar)
return self.decode(z), mu, logvar
# Utility functions for training and visualization
class Utils:
def __init__(self, dataset, model, optimizer, text_encoder, checkpoint_dir='checkpoints'):
self.train_data = dataset
self.model = model
self.optimizer = optimizer
self.checkpoint_dir = checkpoint_dir
self.text_encoder = text_encoder
os.makedirs(checkpoint_dir, exist_ok=True)
def save_checkpoint(self, epoch, loss):
checkpoint_path = os.path.join(self.checkpoint_dir, 'latest_checkpoint.pth')
checkpoint = {
'epoch': epoch,
'model_state_dict': self.model.state_dict(),
'optimizer_state_dict': self.optimizer.state_dict(),
'loss': loss
}
torch.save(checkpoint, checkpoint_path)
rp(f'Checkpoint saved at {checkpoint_path}')
def load_checkpoint(self):
checkpoint_path = os.path.join(self.checkpoint_dir, 'latest_checkpoint.pth')
if os.path.exists(checkpoint_path):
checkpoint = torch.load(checkpoint_path)
self.model.load_state_dict(checkpoint['model_state_dict'])
self.optimizer.load_state_dict(checkpoint['optimizer_state_dict'])
epoch = checkpoint['epoch']
loss = checkpoint['loss']
rp(f'Checkpoint loaded from {checkpoint_path}, epoch {epoch}, loss {loss}')
return epoch, loss
else:
rp(f'No checkpoint found at {checkpoint_path}')
return None, None
def visualize_reconstructions(self, device='cpu'):
self.model.eval()
with torch.no_grad():
for i, data in enumerate(self.train_data):
data = data.to(device)
reconstructed, _, _ = self.model(data)
original = data.detach().cpu().numpy()
reconstructed = reconstructed.detach().cpu().numpy()
# Separate the image and text features
original_image_features = original[:, :1000]
reconstructed_image_features = reconstructed[:, :1000]
# For a single sample, visualize the original and reconstructed images
plt.figure(figsize=(12, 6))
plt.subplot(1, 2, 1)
plt.title('Original Image')
self.visualize_image(original_image_features[0]) # Visualize original image
plt.subplot(1, 2, 2)
plt.title('Reconstructed Image')
self.visualize_image(reconstructed_image_features[0]) # Visualize reconstructed image
plt.show()
if i >= 10:
break
def visualize_image(self, text_prompt, num_samples=1):
# Encode the text prompt
text_features = self.text_encoder.encode_text(text_prompt)
# Generate random latent variables
latent_variables = torch.randn(num_samples, self.model.latent_dim)
# Concatenate text features with latent variables
combined_features = torch.cat((latent_variables, text_features.expand(num_samples, -1)), dim=1)
# Decode the combined features
with torch.no_grad():
generated_images = self.model.decode(combined_features)
# Visualize the generated images
for i in range(num_samples):
plt.figure(figsize=(4, 4))
plt.imshow(generated_images[i].reshape(224, 224)) # Reshape as per your image size
plt.axis('off')
plt.title(f'Generated Image {i+1}')
plt.show()
def train_vae(self, epochs=10, batch_size=32, learning_rate=1e-3):
dataloader = DataLoader(self.train_data, batch_size=batch_size, shuffle=True)
for epoch in range(epochs):
self.model.train()
for batch in dataloader:
batch = batch.to(next(self.model.parameters()).device)
self.optimizer.zero_grad()
recon_batch, mu, logvar = self.model(batch)
loss = self.loss_function(recon_batch, batch, mu, logvar)
loss.backward()
self.optimizer.step()
rp(f'Epoch {epoch + 1}, Loss: {loss.item()}')
self.save_checkpoint(epoch + 1, loss.item())
# Log the current learning rate to WandB
wandb.log({"learning_rate": self.optimizer.param_groups[0]['lr']}, step=epoch)
# Log the loss for the epoch
wandb.log({"epoch_loss": loss.item()}, step=epoch)
# print(f'Epoch {epoch + 1}, Loss: {loss.item()}')
def loss_function(self, recon_x, x, mu, logvar):
MSE = nn.functional.mse_loss(recon_x, x, reduction='sum')
KLD = -0.5 * torch.sum(1 + logvar - mu.pow(2) - logvar.exp())
return MSE + KLD
# Assuming the rest of the script remains the same
# Instantiate encoders
text_encoder = TextEncoder()
image_encoder = ImageEncoder()
# Descriptor for generating descriptions
descriptor = Descriptor()
# Paths
image_dir = './trainings_data/spritesheets'
text_dir = './trainings_data/texts'
# Functions to fetch missing items and extract filenames
def fetch_missing_items(list1, list2):
set2 = set(list2)
return [item for item in list1 if item not in set2]
def extract_filenames(paths):
return [os.path.splitext(os.path.basename(path))[0] for path in paths]
# Get lists of text and image files
text_files = glob(os.path.join(text_dir, '*.txt'))
image_files = glob(os.path.join(image_dir, '*.png'))
# Extract just the filenames without extensions for comparison
text_names = extract_filenames(text_files)
image_names = extract_filenames(image_files)
# Find descriptions missing for images
missing_descriptions = fetch_missing_items(image_names, text_names)
# Generate and write descriptions for missing files
for missing_name in missing_descriptions:
image_path = os.path.join(image_dir, f"{missing_name}.png")
text_path = os.path.join(text_dir, f"{missing_name}.txt")
try:
description = descriptor.describe_image(image_path)
with open(text_path, "w") as f:
f.write(description)
rp(f"Generated description for: {missing_name}")
except Exception as e:
rp(f"Error generating description for {missing_name}: {e}")
# Create dataset
dataset = SpriteTextDataset(image_dir, text_dir, image_encoder, text_encoder)
# Verify dataset size
rp(f"Final dataset size: {len(dataset)}")
# 1000 features from resnet-50 + 768 features from BERT = 1768 input dimensions
vae = VAE(input_dim=1768, latent_dim=70)
# Create an optimizer
optimizer = optim.Adam(vae.parameters(), lr=1e-3)
# Instantiate utilities
utils = Utils(dataset, vae, optimizer, text_encoder)
# Optionally load checkpoint
start_epoch, start_loss = utils.load_checkpoint()
# Train VAE
if start_epoch is None:
start_epoch = 0 # If no checkpoint is found, start from epoch 0
utils.train_vae(epochs=600 - start_epoch)
# Visualize progress
utils.visualize_reconstructions()
# Usage
text_prompt = "A pixel art character with a blue hat"
utils.visualize_image(text_prompt)
```
Todos:
Length and Complexity:\
The tutorial is quite lengthy and could be overwhelming for beginners. Breaking it down into smaller, more digestible parts or creating a series could enhance readability and learning.
Error Handling:
While the tutorial is comprehensive, including common errors and troubleshooting tips could prepare learners for potential pitfalls during implementation.
Visual Outputs:
Including visual outputs of the sprites and intermediate steps could greatly enhance understanding and engagement. Visuals are especially powerful in tutorials dealing with image processing.
Performance Metrics:
More emphasis on evaluating the model’s performance and explaining the metrics could provide learners with better insights into model optimization.
Interactive Elements:
Adding interactive elements like quizzes or small exercises at the end of each block could make the learning process more engaging and effective.
Check, fix, test the multi spritesheets descriptor:
The per sprite descriptive text generation
Future FeaturesL:
Improve the accuracy of the sprite maker by increasing the size of the training set and
using more advanced techniques such as:
attention mechanisms
generative adversarial networks (GANs).
Add more features to the sprite maker to create more realistic and engaging sprites,
such as:
animation
sound effects,
Use the sprite maker to generate sprites for different applications,
such as video games,
virtual reality,
animation.
The End:
Now that we have built a sprite maker, we can use it to create sprites for different applications.
We can also to improve the accuracy and capabilities of the sprite maker by adding more features and using more advanced techniques.
Thank you for following along with this tutorial! I hope you have learned something new and useful. If you have any questions or need further assistance, please don't hesitate to ask.
Grtz. CodeMonkeyXL | bxck75 |
1,870,598 | The evolution of Serverless Postgres | Among the many options available for running managed Postgres, Amazon Aurora Serverless initially... | 0 | 2024-05-30T16:21:07 | https://dev.to/outerbase/the-evolution-of-serverless-postgres-4i5l | postgres, serverless, neon, aws | Among the many options available for running managed Postgres, Amazon Aurora Serverless initially stood out as unique when it was announced. It promised to introduce the concepts of scaling to zero, autoscaling, and usage-based pricing to Postgres.
A lot has changed since then,[ including AWS's decision to deprecate scale-to-zero in Aurora. ](https://www.reddit.com/r/aws/comments/18sx0i6/aurora_serverless_v1_eol_december_31_2024/)Today, developers have other options for running serverless Postgres, such as [Neon](https://neon.tech). In this comparison, we'll examine the key differences between Aurora and Neon, focusing on their serverless capabilities and pricing models.
### Navigating the Amazon Aurora universe
Let’s start by clarifying terminology. When developers refer to “Amazon Aurora”, they might be referring to _three_ different products:
* **[Amazon Aurora provisioned](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/User_DBInstanceBilling.html)** is the “traditional” version of Amazon Aurora, where you provision database instances with a fixed capacity. You have to specify the instance size upfront, and you are billed based on the allocated resources regardless of usage.
* **[Amazon Aurora Serverless v1](https://aws.amazon.com/rds/aurora/serverless/)** came next as the first serverless version of Amazon Aurora. The two core functionalities it introduced were scale to zero and autoscaling: Aurora Serverless v1 instances automatically start up, shut down, and scale capacity up or down based on your application's needs. It's positioned as a more optimal choice for applications with intermittent, unpredictable, or variable workloads.
* **[Amazon Aurora Serverless v2](https://aws.amazon.com/rds/aurora/serverless/)** aimed to address the limitations of v1. It claimed to offer more fine-grained scaling, improved performance, and the same high availability and durability as the provisioned instances. But these improvements came at a high price: **losing scale to zero. **
In Aurora Serverless v1, if there were no database connections or activity for a period of time, the database could automatically pause and reduce capacity to zero, effectively eliminating costs during idle periods. This capability was essential to the claim of serverless as a way to reduce costs for applications with “infrequent usage patterns” running in Aurora.
In contrast, Aurora Serverless v2 maintains a minimum capacity of 0.5 ACUs (Aurora Capacity Units) even when there is no database activity. As we’ll explore later in the post, this means that there are always some costs incurred, regardless of usage. This approach was taken to ensure instant provisioning and [to eliminate the latency associated with cold starts](https://neon.tech/blog/aurora-serverless-v1-to-neon#:~:text=Faster%20cold%20starts%20%E2%80%93%20500ms%20P95%20start%20time%20on%20Neon%2C%20vs%2020%2D60s%20on%20V1), but it came with a trade-off in costs for users.
### Now, meet Neon
[Neon's architecture](https://neon.tech/blog/architecture-decisions-in-neon) is inspired by Amazon Aurora and its separation of compute and storage. But Neon takes this design one step further by adopting [a custom-built storage engine that keeps a history](https://neon.tech/blog/what-you-get-when-you-think-of-postgres-storage-as-a-transaction-journal) of Postgres transactions. This enables Neon not only to offer a truly serverless experience with scale to zero, but also to focus on [improving development workflows by offering features like database branching](https://neon.tech/flow).
Neon [automatically scales compute instances to zero](https://neon.tech/docs/introduction/auto-suspend) when inactive for a specified period (5 minutes by default). Similar to Aurora Serverless, it includes [autoscaling](https://neon.tech/docs/introduction/autoscaling) to dynamically adjust compute resources based on the current load within user-defined limits. Differently to Aurora, Neon comes with a free tier.
### Features: Neon vs Aurora Serverless v2
Let’s dig deeper into how Neon compares to Amazon Aurora Serverless in terms of features. This table gives you the high-level view:
<table>
<tr>
<td><strong>Feature</strong>
</td>
<td><strong>Amazon Aurora Serverless v2</strong>
</td>
<td><strong>Neon</strong>
</td>
</tr>
<tr>
<td>Scale-to-zero
</td>
<td>No, it maintains a minimum capacity of 0.5 ACU at all times*
</td>
<td>Yes, instances can be configured to automatically suspend after a period of inactivity
</td>
</tr>
<tr>
<td>Instant provisioning
</td>
<td>No, new instances take up to 20 minutes
</td>
<td>Yes, rapid provisioning of new instances (<500ms)
</td>
</tr>
<tr>
<td>Compute autoscaling
</td>
<td>Yes, by 0.5 ACU increments
</td>
<td>Yes, based on real-time load
</td>
</tr>
<tr>
<td>On-demand storage
</td>
<td>Yes, by 10 GB increments
</td>
<td>Yes, by 2-10 GB increments depending on plan
</td>
</tr>
<tr>
<td>Database branching
</td>
<td>No
</td>
<td>Yes, with data and schema via copy-on-write
</td>
</tr>
<tr>
<td>Multi-AZ replicas
</td>
<td>Yes
</td>
<td>No, under development
</td>
</tr>
<tr>
<td>Read replicas
</td>
<td>Yes, using separate instances
</td>
<td>Yes, without storage redundancy (compute-only)
</td>
</tr>
<tr>
<td>Point-in-time recovery
</td>
<td>Yes, via backups and transaction logs (takes from minutes to hours)
</td>
<td>Yes, via database branching (instant)
</td>
</tr>
<tr>
<td>API support
</td>
<td>Yes, via RDS API
</td>
<td>Yes, via Neon API
</td>
</tr>
<tr>
<td>CLI support
</td>
<td>Yes, via AWS CLI
</td>
<td>Yes, via Neon CLI
</td>
</tr>
<tr>
<td>Postgres extensions
</td>
<td>Limited
</td>
<td>Extensive (200+)
</td>
</tr>
<tr>
<td>Custom extensions
</td>
<td>Not supported
</td>
<td>Supports custom extensions
</td>
</tr>
<tr>
<td>Connection pooling
</td>
<td>Yes, using RDS Proxy (for a fee)
</td>
<td>Yes, integrated within Neon’s architecture
</td>
</tr>
<tr>
<td>IP Allowlist
</td>
<td>Yes, via security groups
</td>
<td>Yes, via customizable access control
</td>
</tr>
<tr>
<td>Organization accounts
</td>
<td>Yes, via AWS IAM and AWS Organizations
</td>
<td>Yes, natively supported
</td>
</tr>
<tr>
<td>Integrations
</td>
<td>Limited outside AWS ecosystem
</td>
<td>Yes, for CI/CD workflows
</td>
</tr>
<tr>
<td>Support
</td>
<td>Yes, at extra cost
</td>
<td>Yes, included with plan
</td>
</tr>
<tr>
<td>Free tier
</td>
<td>No
</td>
<td>Yes
</td>
</tr>
</table>
_*If you’re wondering what the heck is an ACU, see the next section._
### Pricing model: Aurora Serverless
When it’s time to evaluate pricing for Aurora Serverless, you’ll very quickly be confronted with what seems like an easy question to answer: **what is an ACU?**
Let’s backtrack. In Aurora Serverless, ACUs (Aurora Capacity Units) are the units of measure used to define the capacity of database instances. When running an instance as a user, you’ll define a minimum and maximum ACU limit. Aurora will scale up and down automatically between these minimum and maximum limits, in 0.5 ACU increments.
The minimum number of ACUs varies between Aurora Serverless v1 and v2:
* In Aurora Serverless v1, you can define 0 as the minimum limit (v1 scales to zero).
* In Aurora Serverless v2, the minimum possible limit is 0.5 ACU. We’ll break down what this implies cost-wise in the next section.
Now, to size an Aurora Serverless instance, the first thing you would like to know is how much CPU and memory is contained in each ACU. You will be billed according to how many ACUs you have used in a month, so this is highly relevant: for example, you may suspect that 1 CPU would be enough to handle your peak load, and therefore you would like to set up your maximum ACU limit at a corresponding capacity.
Unfortunately, AWS is opaque in disclosing this information, making pricing in Aurora very uncertain. [According to the Aurora docs](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/aurora-serverless-v2.how-it-works.html), an ACU is “a combination of approximately 2 gibibytes (GiB) of memory, corresponding CPU, and networking”.
We’re as confused as you are about what this means. [Some folks online have experimented with this](https://www.reddit.com/r/aws/comments/uswz6h/aurora_serverless_v2_in_production/) and concluded that probably 1 ACU = 0.25 vCPU, 2 GiB memory. But we can’t know for sure.
ACU mysteries aside, your monthly Aurora Serverless bill will be calculated as the sum of a few elements, included below. If you avoid the I/O charges by using I/O optimized storage (highly recommended), compute and database storage will most likely be the main elements contributing to your monthly costs.
<table>
<tr>
<td><strong>Billing component in Aurora Serverless</strong>
</td>
<td><strong>Description </strong>
</td>
</tr>
<tr>
<td>Compute
</td>
<td>Billed per ACU-hour based on the capacity used, with a minimum of 0.5 ACU.
</td>
</tr>
<tr>
<td>Database storage
</td>
<td>Billed per GB-month in 10 GB increments with a <a href="https://aws.amazon.com/rds/aurora/faqs/#:~:text=The%20minimum%20storage%20is%2010,no%20impact%20to%20database%20performance.">minimum of 10 GB</a>.
</td>
</tr>
<tr>
<td>I/O requests
</td>
<td>Only applicable to standard storage (<a href="https://aws.amazon.com/rds/aurora/pricing/">included for I/O optimized</a>). Billed per million requests.
</td>
</tr>
<tr>
<td>Backup storage
</td>
<td>Automated backups up to the size of your database are free. Additional backup storage is billed per GB-month.
</td>
</tr>
<tr>
<td>Data transfer costs
</td>
<td>Data transfer within the same AWS region is free. Cross-region and outbound data transfer is billed per GB.
</td>
</tr>
<tr>
<td>Multi-AZ deployments
</td>
<td>Additional costs for the resources used in the additional AZ.
</td>
</tr>
<tr>
<td>Read replicas
</td>
<td>Billed for ACU usage, storage, and I/O operations for each read replica. Cross-region replication incurs additional data transfer charges.
</td>
</tr>
<tr>
<td>Backtrack
</td>
<td>When you “rewind” an Aurora database without restoring from backup. Billed per GB-month for the change records stored.
</td>
</tr>
<tr>
<td>API
</td>
<td>Charges for using certain APIs provided by Aurora. Billed per million API requests.
</td>
</tr>
<tr>
<td>Snapshot or cluster export
</td>
<td>Charges for exporting snapshots or clusters to S3. Billed per GB of snapshot or cluster exported.
</td>
</tr>
</table>
Since Aurora Serverless v2 doesn’t have a free tier and has minimum requirements for both compute and storage, we can estimate the minimum costs for the smallest database possible running 24/7:
* [Minimum monthly cost: $65.65 USD.](https://calculator.aws/#/createCalculator/AuroraPostgreSQL)
This is the absolute monthly minimum for a database running in us-east-1, assuming we’re using I/O optimized storage to avoid extra I/O charges.
This calculation assumes that you’re using 0.5 ACU (the minimum) at all times. However, an important practical consideration is that in reality, you’ll be forced to pick an ACU range, and the [lowest maximum ACU possible is 1 ACU](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/aurora-serverless-v2-administration.html). So, a better expectation is that, in the previous example, costs would oscillate between $60 and $120 USD approximately.
### Pricing model: Neon
Compute in Neon [with autoscaling enabled](https://neon.tech/docs/introduction/autoscaling) works similarly to Aurora Serverless, but without the opacity. In Neon, 1 CU = 1 vCPU and 4 GiB of memory. You’ll be able to set up minimum and maximum autoscaling limits (with the minimum being able to scale to zero if you wish), and your compute consumption will be billed in CU-hours at the end of the month.
In terms of billing components, Neon offers three [different pricing plans](https://neon.tech/pricing). Your monthly bill will account for:
* The monthly fee corresponding to each plan ($0, $19, or $69)
* Any additional compute or storage usage over what is included within each plan
* Charges per additional projects (the logical equivalent of an instance in Neon)
<table>
<tr>
<td>
<strong>Billing component in Neon</strong>
</td>
<td><strong>Free</strong>
</td>
<td><strong>Launch</strong>
</td>
<td><strong>Scale</strong>
</td>
</tr>
<tr>
<td>Monthly fee
</td>
<td>0 \
</td>
<td>19 USD
</td>
<td>69 USD
</td>
</tr>
<tr>
<td>Additional compute usage
</td>
<td>N/A - Includes capacity for 24/7 usage with 0.5 CU
</td>
<td>300 CU-hours included with monthly fee. Additional charges after that.
</td>
<td>750 CU-hours included with monthly fee. Additional charges after that.
</td>
</tr>
<tr>
<td>Additional storage
</td>
<td>N/A - Includes 0.5 GB
</td>
<td>10 GB included with monthly fee. Additional charges after that.
</td>
<td>50 GB included with monthly fee. Additional charges after that.
</td>
</tr>
<tr>
<td>Additional projects
</td>
<td>N/A - Includes 1 project
</td>
<td>10 projects included with monthly fee. Additional charges after that.
</td>
<td>50 projects included with monthly fee. Additional charges after that.
</td>
</tr>
</table>
### Comparing compute costs: Neon vs Aurora Serverless v2
Estimating compute costs is often the hardest piece with serverless databases. To bring some clarity to this, let’s work through some example workloads that teams might see for serverless applications.
For this exercise, we’ll use the following equivalence:
* 1 ACU in Aurora = 0.5 CU in Neon = 0.5 vCPU, 2 GiB memory.
Taking into consideration that AWS discloses that 1 ACU equals 2 GiB of memory, and that 1 CU in Neon equals 4 GiB of memory, this equivalence seems like a fair assumption—but note that this is approximate. We have reasons to believe that ACUs are even smaller than that CPU-wise, so your** real workload may require higher ACU limits** (and therefore higher costs) than estimated here.
<table>
<tr>
<td><strong>Example workload </strong>
</td>
<td><strong>Compute costs in Neon</strong>
</td>
<td><strong>Compute costs in Aurora Serverless v2</strong>
</td>
</tr>
<tr>
<td>Low compute (testing)
</td>
<td>41 USD
</td>
<td>701 USD
</td>
</tr>
<tr>
<td>Medium compute (analytics)
</td>
<td>69 USD
</td>
<td>467 USD
</td>
</tr>
<tr>
<td>High compute (application)
</td>
<td>1,059 USD
</td>
<td>4,064 USD
</td>
</tr>
</table>
#### Low compute, testing workloads
Imagine a small team working on a new feature. They need multiple dev, staging, and testing environments, but each environment has minimal traffic and data storage needs. These databases are often idle for extended periods and only need to be active during specific testing windows.
Using [database branches](https://neon.tech/docs/introduction/branching), we could do this on the Neon free tier. But, if this workload requires multiple projects, we cand use the Launch tier instead. Let’s say we’re using 1 vCPU (1 CU) for each of our three projects (dev, staging, and testing), but overall, they are idle 80% of the time. So, this becomes:
* 1 CU * 3 Projects * 730 * 0.2 = 438 CU-hours
This is over the 300 compute hours included in the Launch tier, so we’ll also have to pay $0.16 per extra compute hour:
* $19 + (138 compute hours * $0.16) = $41.08
So, just over $40 monthly for this testing workload with Neon. For Aurora Serverless v2, it is:
* 2 ACU * 3 instances * 730 = 4,380 ACU-hours
**This costs us many more compute hours because we have no scale to zero**. Now, using the standard configuration pricing of $0.16 per ACU-hour in I/O optimized instances:
* 4,380 ACU-hours * $0.16 = $700.8
The Aurora compute cost would be 17x more than the Neon cost for this sceario, mainly due to Neon’s ability to scale to zero.
#### Medium compute, analytics workloads
Here, the team might need to batch-run analytics queries and generate reports to gain insights into user behavior and application performance.
Let’s do Neon first. Let’s assume we’re still in the Launch tier, that we’ll use 2 vCPUs (CUs), and 1 project. Again, these analytics runs aren’t constant—we’ll assume that we’re using them 50% of the time and that they’re idle the rest. With Neon, this looks like:
* 2 CUs * 1 Project * 730 * 0.5 = 730 CU-hours
If we stayed on the Launch tier, we’d have to pay 430 extra compute hours, so the extra cost would be:
* $19 + (430 CU-hours * $0.16) = $448.8
**We can get this cost much lower if we upgraded to the Scale tier, which includes 750 CU-hours within the $69 monthly fee. **
With Aurora Serverless v2, we get:
* 4 ACUs * 1 Instance * 730 = 2,920 ACU-hours
Again, if we assume a I/O-optimized storage [so we’re not abused by I/O costs](https://aws.amazon.com/blogs/database/planning-i-o-in-amazon-aurora/), the monthly price would be:
* 2,920 ACU-hours* $0.16 = $467.2
#### High compute, application workloads
A high compute, application workload will be a production environment with significant traffic and low latency.
Here, we’ll use a variable workload, with 8 vCPUs used during working hours (180 hours / month) and 2 /vCPUs during off-peak hours (550 hours / month). We’ll assume 5 instances/projects. **In this scenario, there is no idle time.**
With the Scale tier on Neon, this works out as:
* (8 CUs *180) + (2 CUs * 550) * 5 Projects = 6,940 CU-hours
We have 750 CU-hours included in the Scale tier, so the cost for this would be:
* $69 + (6,190 * $0.16) = $1,059.4
In Aurora Serverless:
* (16 ACUs * 180) + (4 ACUs * 550) * 5 Instances = 25,400 ACU-hours
And the monthly price:
* 25,400 ACU-hours * $0.16 = $4,064
### Conclusion
Both Amazon Aurora and Neon offer serverless options to run managed Postgres instances. While Aurora provides robust scalability and a rich set of features, Neon stands out with some advantages, mainly the capacity to scale to zero and a simpler and more transparent pricing structure with a free tier. This makes it a more attractive choice for startups and mid-sized businesses. | burcs |
1,870,597 | The Tech-Powered Podiatrist: How Technology is Transforming Foot Care | It is no longer necessary to rely purely on physical examinations and X-rays to treat foot problems... | 0 | 2024-05-30T16:18:28 | https://dev.to/brentradford/the-tech-powered-podiatrist-how-technology-is-transforming-foot-care-29ha | techtalks, healthydebate | It is no longer necessary to rely purely on physical examinations and X-rays to treat foot problems are disappearing. The field of podiatry is changing, driven by technological advances that are revolutionizing the way we treat and diagnose foot ailments. We at the Foot Focus [Podiatry Perth](https://footfocuspodiatry.com.au/) we take advantage of these developments to offer our patients the most efficient and customized treatment that is available.
## Revolutionizing Orthotics using 3D Printing
In the past, orthotics were made using a mold that was made of the foot usually creating a one-size-fits-all approach. However 3D scanning technology enables us to take a detailed scan of the foot. The data we collect is utilized to design custom orthotics using 3D printing. These custom-designed orthotics provide top comfort and support, leading to better relief from pain and better treatment outcomes for a variety of foot issues like flat feet and plantar fasciitis. feet.
## Improved Diagnosis Using AI Help:
Artificial Intelligence (AI) is becoming a major player throughout the world of medical science and podiatry isn't one of them. AI algorithmic models are evolving based on huge quantities of medical information such as X-rays, MRIs, and the patient's history. They are able to aid podiatrists with studying photographs and finding subtle indications of irregularities that could be overlooked by our eyes. With AI's assistance, it is possible to diagnose ailments like arthritis, fractures as well as early signs of foot problems caused by diabetes more efficiently and accurately.
## Empowering Patients through Digital Therapy and wearable Tech:
Technology is now extending beyond the confines of our clinic giving patients the ability to take an active part for their feet health. Mobile apps can offer instructions for stretching and exercises specifically formulated for the most common foot ailments. The exercises can be completed at home, encouraging self-care and increasing the efficacy of your office-based treatment program. In addition, wearable technology such as smart insoles are able to measure your gait and provide useful information about your walking habits. These data will assist us in identifying any potential issues and suggest appropriate measures prior to discomfort occurs.
## The Future of Foot Care is Bright
Technology isn't intended to replace podiatrists. it's here for us to expand our experience and provide more complete foot health. With these advances that we're able to provide faster diagnosis, more customized treatment as well as better general outcomes to our clients. If you're suffering from feet pain or just need to take an active approach to improving your foot health, book an appointment today and experience the new era of podiatry. | brentradford |
1,870,596 | Mastering YOLOv10: A Complete Guide with Hands-On Projects | Introduction In the rapidly evolving field of computer vision, YOLO (You Only Look Once)... | 0 | 2024-05-30T16:16:05 | https://dev.to/tarek_eissa/mastering-yolov10-a-complete-guide-with-hands-on-projects-5055 | ### Introduction
In the rapidly evolving field of computer vision, YOLO (You Only Look Once) models have consistently stood out for their remarkable balance between computational cost and detection performance. YOLOv10, the latest iteration, addresses key inefficiencies and introduces a slew of innovations, making it a game-changer for real-time object detection. This guide will walk you through the significant improvements in YOLOv10 and provide step-by-step instructions to implement object detection and region counting projects using YOLOv10.
👉 Check out my earlier articles for more information:
### Django Articles
- [Deploying and Scaling Django Apps in Kubernetes K8S with Postgresql](https://medium.com/@tarekeesa7/deploying-and-scaling-django-apps-in-kubernetes-k8s-with-postgresql-659e863ef033)
- [Create a Django App From Scratch Ultimate Guide_
](https://medium.com/@tarekeesa7/create-a-django-app-from-scratch-ultimate-guide-f67d72a86db6)
- [How to scale a Django application to serve one million users?](https://medium.com/@tarekeesa7/how-to-scale-a-django-application-to-serve-one-million-users-f3f4237660c8)
- [Connecting a POS Printer to Windows OS Using Django: A Comprehensive Guide](https://medium.com/@tarekeesa7/connecting-a-pos-printer-to-windows-os-using-django-a-comprehensive-guide-37a34cdce6b1)
- [Dynamic Web Pages With Django and TinyMice.](https://medium.com/@tarekeesa7/dynamic-web-pages-with-django-and-tinymice-72ef4075734b)
- [Mastering YOLOv10: A Complete Guide with Hands-On Projects](https://medium.com/@tarekeesa7/django-vs-node-js-the-battle-of-backend-frameworks-in-2024-34db95ed0065)
### AI && Deep Learning
- [NLP vs LLM: A Comprehensive Guide to Understanding Key Differences](https://dev.to/tarek_eissa/nlp-vs-llm-a-comprehensive-guide-to-understanding-key-differences-2can)
- [Large Language Models (LLMs) in Scoring Tasks and Decision Making](https://dev.to/tarek_eissa/large-language-models-llms-in-scoring-tasks-and-decision-making-3gko)
- [YOLOv9 vs. YOLOv8: Segmentation & Fine-Tuning Guide](url)
- 2[5 projects that you can build with Python and AI for 2024](https://dev.to/tarek_eissa/yolov9-vs-yolov8-segmentation-fine-tuning-guide-3pi5)
💡I write about Machine Learning web application with python NodeJs Javascripts on [Dev.to](https://dev.to/tarek_eissa) || [Github](https://github.com/tarek421995?tab=repositories) || [Kaggle](https://www.kaggle.com/tarekeissa) || [Linkedin](https://www.linkedin.com/in/tarek-eissa-98311b244?lipi=urn%3Ali%3Apage%3Ad_flagship3_profile_view_base_contact_details%3BI0rvnlXtSMKpUUh250aMoQ%3D%3D) || [Medium](https://medium.com/@tarekeesa7). 🔔 Follow “ProspexAI” for future updates!
### Table of Contents
1. Setup
2. Example 1: Object Detection with YOLOv10
3. Example 2: Region Counting Using YOLOv10
4. Comparing YOLOv10 to Previous Versions and Other Models
### Academic Perspective
YOLO models are popular in real-time object detection for their balance between computational cost and detection performance. Over the years, researchers have improved their designs, objectives, and data strategies, but reliance on non-maximum suppression increases latency and hinders end-to-end deployment. Various YOLO components have inefficiencies that limit their capability.
### YOLOv10 Improvements
YOLOv10 addresses these issues with NMS-free training for lower latency and an efficiency-accuracy driven design strategy. The authors introduced consistent dual assignments for NMS-free training, which simultaneously achieves competitive performance and low inference latency. They also proposed a holistic efficiency-accuracy driven model design strategy, optimizing various YOLO components from both efficiency and accuracy perspectives. This reduces computational overhead and enhances performance.
### Performance Comparison
Experiments show YOLOv10 achieves state-of-the-art performance and efficiency. For example, YOLOv10-S is 1.8 times faster than RT-DETR-R18 with similar accuracy and has fewer parameters and FLOPs. Compared to YOLOv9-C, YOLOv10-B has 46% less latency and 25% fewer parameters for the same performance.
### Visualization
Here are visual comparisons of YOLOv10 with previous YOLO versions and other models in terms of latency and number of parameters:
- **Figure 1:** Comparisons with others in terms of latency-accuracy (left) and size-accuracy (right) trade-offs. We measure the end-to-end latency using the official pre-trained models.
### Setup
Before diving into the examples, let’s ensure we have the necessary setup. We’ll start by installing the required libraries.
#### Step 1: Install the Required Libraries
```bash
# Clone ultralytics repo
git clone https://github.com/ultralytics/ultralytics
# cd to local directory
cd ultralytics
# Install dependencies
pip install -r requirements.txt
```
### Example 1: Object Detection with YOLOv10
Object detection is a fundamental task in computer vision. YOLOv10 enhances this by eliminating the need for non-maximum suppression (NMS) during inference, leading to lower latency and improved performance.
#### Step-by-Step Implementation
Download the model of your choice and ensure it fits your GPU memory. Here's a Python script to download videos from YouTube for testing:
```python
from pytube import YouTube
# Replace 'YOUR_VIDEO_URL' with the URL of the YouTube video you want to download
video_url = 'your link here'
# Create a YouTube object
yt = YouTube(video_url)
# Get the highest resolution stream available
video_stream = yt.streams.filter(progressive=True, file_extension='mp4').order_by('resolution').desc().first()
# Download the video
video_stream.download()
print("Download complete!")
```
#### Setup:
```python
import cv2
import numpy as np
from ultralytics import YOLO
# Load YOLOv10 model
model = YOLO('yolov10.pt')
# Path to the video file
video_path = 'path/to/your/video.mp4'
cap = cv2.VideoCapture(video_path)
# Process Video Frames
while cap.isOpened():
ret, frame = cap.read()
if not ret:
break
# Perform object detection
results = model(frame)
# Draw bounding boxes
for result in results:
boxes = result['boxes']
for box in boxes:
x1, y1, x2, y2 = box['coords']
label = box['label']
confidence = box['confidence']
cv2.rectangle(frame, (x1, y1), (x2, y2), (0, 255, 0), 2)
cv2.putText(frame, f'{label} {confidence:.2f}', (x1, y1 - 10), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 255, 0), 2)
# Display the frame
cv2.imshow('YOLOv10 Object Detection', frame)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
```
### Example 2: Region Counting Using YOLOv10
Region counting allows for tallying objects within specified areas, providing valuable insights in various applications such as surveillance and traffic monitoring. This example demonstrates how to count objects in defined regions using YOLOv10.
#### Step-by-Step Implementation
##### Define Regions and Setup Model:
```python
from shapely.geometry import Polygon, Point
# Define counting regions
counting_regions = [
{
"name": "Region 1",
"polygon": Polygon([(50, 80), (250, 20), (450, 80), (400, 350), (100, 350)]),
"counts": 0,
"color": (255, 0, 0)
},
{
"name": "Region 2",
"polygon": Polygon([(200, 250), (440, 250), (440, 550), (200, 550)]),
"counts": 0,
"color": (0, 255, 0)
},
]
model = YOLO('yolov10.pt')
```
##### Process Video and Count Objects in Regions:
```python
cap = cv2.VideoCapture('path/to/your/video.mp4')
while cap.isOpened():
ret, frame = cap.read()
if not ret:
break
# Perform object detection
results = model(frame)
# Draw regions
for region in counting_regions:
points = np.array(region["polygon"].exterior.coords, dtype=np.int32)
cv2.polylines(frame, [points], isClosed=True, color=region["color"], thickness=2)
region["counts"] = 0 # Reset counts for each frame
# Count objects in regions
for result in results:
boxes = result['boxes']
for box in boxes:
x1, y1, x2, y2 = box['coords']
center = Point((x1 + x2) / 2, (y1 + y2) / 2)
for region in counting_regions:
if region["polygon"].contains(center):
region["counts"] += 1
# Display counts
for region in counting_regions:
text = f'{region["name"]}: {region["counts"]}'
cv2.putText(frame, text, (int(region["polygon"].centroid.x), int(region["polygon"].centroid.y)), cv2.FONT_HERSHEY_SIMPLEX, 0.5, region["color"], 2)
# Display the frame
cv2.imshow('YOLOv10 Region Counting', frame)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
```
### Community Support
For more information, you can explore Ultralytics YOLOv10 Docs.
**YOLOv10 Resources:**
- [GitHub](https://github.com/ultralytics/yolov10)
- [Docs](https://docs.ultralytics.com)
If you have any questions running the code in your environments, contact me directly. | tarek_eissa | |
1,870,593 | Upstream preview: Vincent Danen of Red Hat calls for a patch management revolution | Upstream is June 5, and wow, our schedule is shaping up brilliantly. Over the next few weeks we’ll... | 0 | 2024-05-30T16:12:33 | https://blog.tidelift.com/upstream-preview-vincent-danen-of-red-hat-calls-for-a-patch-management-revolution | upstream, opensource, patchmanagement, security | <p> </p>
<!--more-->
<p><span style="font-style: italic;">Upstream is June 5, and wow, our schedule is shaping up brilliantly. Over the next few weeks we’ll give you a sneak preview into some of the talks and the speakers giving them via posts like these. RSVP </span><a href="https://upstream.live/register" style="font-style: italic;" rel="noopener" target="_blank">now</a><span style="font-style: italic;">!</span></p>
<p>How does your organization currently think about vulnerability management? Is your goal to “patch everything” to try to get the number of vulnerabilities left in your codebase to zero? This sounds like a noble goal, but as <a href="https://www.redhat.com/en/blog/patch-management-needs-a-revolution-part-2" rel="noopener" target="_blank"><span>the chart below</span></a> shows, the number of vulnerabilities being reported increases exponentially year over year, which is one of the things that makes this a very challenging strategy to execute.<img src="https://lh7-us.googleusercontent.com/lSxCm0Azonm5MQEuCCIp_pK94Iai-zEw9S5prvvDQNMl-CAXY-7fpJ7B34_m226MZbU63zKiCrYeNUgELdETK1KPdg1dYj6RegA1rBoHZ1kK5e773l3PBKkVB2JYr5zc0fZz86xFu6GhOSGFEbFjctk" width="624" height="385" loading="lazy"></p>
<p>Development teams are now often overwhelmed triaging long lists of vulnerabilities, with little context on which are the most important to patch to actually reduce risk. Open source maintainers are also swamped with vulnerability reports to investigate, many of which end up being false positives. We’ve managed to create an endless game of security whack-a-mole and, worst of all, it may not actually be delivering the actual outcome we desire: actual risk reduction.</p>
<p>In the spirit of this year’s Upstream theme, “<a href="/upstream-is-june-5-2024" rel="noopener" target="_blank"><span>unusual ideas to solve the usual problems</span></a>,” we asked Forrest Brazeal to do a series of cartoons illustrating some of the “usual problems” facing open source that need unusual solutions, and he happened to pick this very subject for one of them.</p>
<p><img src="https://lh7-us.googleusercontent.com/d19PalsVWvUkV4VL3bqHDkkuQaOfLlIAe1R9Rj-20mOaFzr5cS6xgmitns-HrRxnAYrgLLWiSARhxZrwDhIhiBugyaT-OW_wEW9WTA5pD9_Ajpa7CnwFf2-xVHqofACq91oAPDGeq8iV8Vk2hRIZFRs" width="606" height="606" loading="lazy"></p>
<p>Against this backdrop, we are delighted to welcome Vincent Danen, vice president of Red Hat Product Security, as a first-time speaker at Upstream this year! Vincent will be joining Tidelift CEO and co-founder Donald Fischer to suggest a very unusual way to improve open source software security: a patch management revolution!</p>
<p>Earlier this year, Vincent wrote a blog post series entitled “<a href="https://www.redhat.com/en/blog/patch-management-needs-a-revolution-part-1" rel="noopener" target="_blank"><span>Patch management needs a revolution</span></a>” in which he makes the case that we haven’t really challenged our thinking around “patching everything” in about 40 years. Yet, available evidence shows that most vulnerabilities do not and will not ever see exploitation. Vincent makes the point that even if we patch everything at once, that will probably only reduce the number of breaches by 5%. </p>
<p>By changing how we think about open source software supply chain security from an exercise in creating “vulnerability-free” software (a compliance-driven exercise) to one where the purpose is minimizing the potential or severity of a breach (a risk-driven exercise), we may actually reduce our security costs and improve our outcomes at the same time.<br><br>If this sounds like the kind of revolution you’d like to join, or if your organization is feeling the pain of being on the “patch everything” vulnerability management journey, <a href="https://upstream.live/" rel="noopener" target="_blank"><span>join us at Upstream</span></a> on June 5 to hear Vincent share his ideas in person.</p>
<p style="padding: 10px 0px; text-align: center;"><a style="padding: 10px 30px; background-image: linear-gradient(#FFB305 0%, #FFB300 100%); color: #121419; border-radius: 30px; text-decoration: none; font-weight: bold;" href="https://upstream.live/register" rel="noopener" target="_blank">RSVP now</a></p>
<h3 style="font-size: 24px;">About Vincent Danen</h3>
<p>Vincent joined Red Hat in 2009 and has been working in the security field, specifically around Linux, operating security and vulnerability management, for over 20 years. These days his focus is more on growing talented leaders and leadership skills and protecting customers and communities from existing and emerging digital security threats. Vincent believes in open source principles, such as meritocracy, transparency, collaboration, and uses them daily to achieve these goals along with core personal principles such as integrity, honesty, and trust.</p>
<p> </p> | cdgrams |
1,870,590 | No Code Process Automation | In today's fast-paced business environment, efficiency and agility are paramount. Organizations... | 0 | 2024-05-30T16:08:37 | https://dev.to/saxonai/no-code-process-automation-2o10 | In today's fast-paced business environment, efficiency and agility are paramount. Organizations increasingly turn to no-code process automation apps to streamline operations, reduce costs, and enhance productivity. These platforms empower non-technical users to create and manage automated workflows without the need for programming expertise. Here, we'll explore the benefits, key features, and examples of [no-code process automation apps](https://procesoapp.com/). | saxonai | |
1,870,587 | 🚀 Building Toy ARM64 Emulator | Hey everyone! 👋 🤔 Ever wondered what it’s like to get really close to the chip level? Dive into the... | 0 | 2024-05-30T16:02:16 | https://dev.to/dotproduct/building-toy-arm64-emulator-a4j | javascript, python, cpp, tutorial | Hey everyone! 👋
🤔 Ever wondered what it’s like to get really close to the chip level?
Dive into the world of ARM64 by building your own emulator!
Whether you’re into C++, Python, or JavaScript, I’ve got you covered with this super easy-to-follow post 🕹️.
### 🔧 What You’ll Learn
- Get up close and personal with ARM64 architecture.
- Gain hands-on experience with low-level programming and emulation.
- Build an emulator in your favorite language: C++, Python, or JavaScript.
### 💡 Why Build an Emulator?
- Learn by Doing.
- Understand the ARM64 architecture.
### 👨💻 Choose Your Language:
- C++: Perfect for those who love performance and speed.
- Python: Great if you prefer simplicity and readability.
- JavaScript: Awesome for web-based emulation and flexibility.
### Features
- Emulates 31 general-purpose registers (x0 to x30).
- Supports basic ARM64 instructions: ldr, str, add, mul, mov, svc, and b.
- Handles memory operations.
- Can print the current state of registers and memory.
### Methods
- constructor(): Initializes the emulator with empty registers and memory, and sets the program counter (pc) to 0.
- loadProgram(program): Loads a program into the emulator. The program should be a string of ARM64 assembly instructions.
- run(): Runs the loaded program.
- printMemory(): Prints the current state of the memory.
- printRegisters(): Prints the current state of the registers.
- initializeMemory(memoryInit): Initializes the emulator's memory with the given key-value pairs.
### Supported Instructions
- ldr: Loads a value into a register.
- str: Stores a value from a register into memory.
- add: Adds two register values and stores the result in a destination register.
- mul: Multiplies two register values and stores the result in a destination register.
- mov: Moves an immediate value into a register.
- svc: (Not implemented) Placeholder for handling system calls.
- b: Branches to a labeled instruction.
### ARM64 Overview
- ARM64 (AArch64) is a 64-bit architecture used in modern processors.
- Supports a large set of registers (x0-x30), each 64 bits wide.
- Designed for high performance and energy efficiency.
### Purpose of the Emulator
- Simulate ARM64 instruction execution.
### Initializing Emulator
- Constructor initializes registers (x0-x30) to 0.
- Memory and program counter (pc) initialized.
- Instructions and labels are set up for later use.
### Initializing Code
> cpp
```cpp
#include <iostream>
#include <unordered_map>
#include <vector>
#include <string>
#include <sstream>
class ARM64Emulator {
private:
std::unordered_map<std::string, int> registers;
std::unordered_map<int, int> memory;
std::vector<std::string> instructions;
std::unordered_map<std::string, int> labels;
int pc;
public:
ARM64Emulator() : pc(0) {
for (int i = 0; i < 31; i++) {
registers["x" + std::to_string(i)] = 0;
}
}
}
```
> python
```python
class ARM64Simulator:
def __init__(self):
self.registers = {f'x{i}': 0 for i in range(31)}
self.memory = {}
self.pc = 0
self.instructions = []
self.labels = {}
```
> javascript
```javascript
class ARM64Emulator {
constructor() {
this.registers = {};
for (let i = 0; i < 31; i++) {
this.registers[`x${i}`] = 0;
}
this.memory = {};
this.pc = 0;
this.instructions = [];
this.labels = {};
}
}
```
### Loading the Program
- loadProgram(program): Loads the program into the emulator.
- Splits the program into instructions and filters out empty lines.
- Calls parseLabels() to identify labels in the program.
### Loading Code
> cpp
```cpp
void loadProgram(const std::string& program) {
std::istringstream stream(program);
std::string line;
while (std::getline(stream, line)) {
std::string trimmed = trim(line);
if (!trimmed.empty()) {
instructions.push_back(trimmed);
}
}
parseLabels();
}
void parseLabels() {
for (size_t i = 0; i < instructions.size(); i++) {
const std::string& line = instructions[i];
size_t colonPos = line.find(':');
if (colonPos != std::string::npos) {
std::string label = trim(line.substr(0, colonPos));
labels[label] = i;
}
}
}
std::string trim(const std::string& str) {
size_t first = str.find_first_not_of(" \t");
size_t last = str.find_last_not_of(" \t");
return (first == std::string::npos || last == std::string::npos) ? "" : str.substr(first, (last - first + 1));
}
```
> python
```python
def load_program(self, program):
self.instructions = [line.strip() for line in program.split('\n') if line.strip()]
self.parse_labels()
def parse_labels(self):
for i, line in enumerate(self.instructions):
if ':' in line:
label = line.split(':')[0].strip()
self.labels[label] = i
```
> javascript
```javascript
loadProgram(program) {
this.instructions = program.split('\n').map(line => line.trim()).filter(line => line);
this.parseLabels();
}
parseLabels() {
this.instructions.forEach((line, i) => {
if (line.includes(':')) {
const label = line.split(':')[0].trim();
this.labels[label] = i;
}
});
}
```
### Running the Program
- run(): Executes the loaded instructions one by one.
- Skips label lines and calls executeInstruction(line) for each instruction.
### Running Code
> cpp
```cpp
void run() {
while (pc < instructions.size()) {
const std::string& line = instructions[pc];
if (line.back() != ':') {
executeInstruction(line);
}
pc++;
}
}
```
> python
```python
def run(self):
while self.pc < len(self.instructions):
line = self.instructions[self.pc]
if not line.endswith(':'):
self.execute_instruction(line)
self.pc += 1
```
> javascript
```javascript
run() {
while (this.pc < this.instructions.length) {
const line = this.instructions[this.pc];
if (!line.endsWith(':')) {
this.executeInstruction(line);
}
this.pc++;
}
}
```
### Executing Instructions
- executeInstruction(line): Parses and executes a single instruction.
- Supports ldr, str, add, mul, mov, svc, and b instructions.
### Executing Code
> cpp
```cpp
void executeInstruction(const std::string& line) {
std::istringstream iss(line);
std::vector<std::string> parts;
std::string part;
while (iss >> part) {
parts.push_back(part);
}
const std::string& cmd = parts[0];
// Handle 'ldr', 'str', 'add', 'mul', 'mov', 'svc', 'b'
}
```
> python
```python
def execute_instruction(self, line):
parts = line.split()
cmd = parts[0]
# Handle 'ldr', 'str', 'add', 'mul', 'mov', 'svc', 'b'
```
> javascript
```javascript
executeInstruction(line) {
const parts = line.split(/\s+/);
const cmd = parts[0];
switch (cmd) {
// Handle 'ldr', 'str', 'add', 'mul', 'mov', 'svc', 'b'
}
}
```
### LDR and STR Instructions
- ldr: Loads a value into a register.
- str: Stores a value from a register into memory.
### LDR Code
> cpp
```cpp
if (cmd == "ldr") {
std::string reg = parts[1].substr(0, parts[1].length() - 1); // remove trailing comma
std::string value = parts[2];
if (value[0] == '=') {
int addr = std::stoi(value.substr(1));
registers[reg] = addr;
} else {
int addr = registers[value.substr(1, value.length() - 2)];
registers[reg] = memory[addr];
}
}
```
> python
```python
if cmd == 'ldr':
reg, value = parts[1].strip(','), parts[2]
if value.startswith('='):
addr = value[1:]
self.registers[reg] = addr
else:
addr = self.registers[value.strip('[]')]
self.registers[reg] = self.memory.get(addr, 0)
```
> javascript
```javascript
case 'ldr': {
const reg = parts[1].replace(',', '');
const value = parts[2];
if (value.startsWith('=')) {
const addr = value.substring(1);
this.registers[reg] = addr;
} else {
const addr = this.registers[value.replace('[', '').replace(']', '')];
this.registers[reg] = this.memory[addr] || 0;
}
break;
}
```
### STR Code
> cpp
```cpp
else if (cmd == "str") {
std::string value = parts[1].substr(0, parts[1].length() - 1);
std::string reg = parts[2].substr(1, parts[2].length() - 2);
int addr = registers[reg];
memory[addr] = registers[value];
}
```
> python
```python
elif cmd == 'str':
value, reg = parts[1].strip(','), parts[2]
addr = self.registers[reg.strip('[]')]
self.memory[addr] = self.registers[value]
```
> javascript
```javascript
case 'str': {
const value = parts[1].replace(',', '');
const reg = parts[2];
const addr = this.registers[reg.replace('[', '').replace(']', '')];
this.memory[addr] = this.registers[value];
break;
}
```
### ADD and MUL Instructions
- add: Adds values from two registers and stores the result in a destination register.
- mul: Multiplies values from two registers and stores the result in a destination register.
### ADD and MUL Code
> cpp
```cpp
else if (cmd == "add") {
std::string dest = parts[1].substr(0, parts[1].length() - 1);
std::string src1 = parts[2].substr(0, parts[2].length() - 1);
std::string src2 = parts[3];
registers[dest] = registers[src1] + registers[src2];
} else if (cmd == "mul") {
std::string dest = parts[1].substr(0, parts[1].length() - 1);
std::string src1 = parts[2].substr(0, parts[2].length() - 1);
std::string src2 = parts[3];
registers[dest] = registers[src1] * registers[src2];
}
```
> python
```python
elif cmd == 'add':
dest, src1, src2 = parts[1].strip(','), parts[2].strip(','), parts[3]
self.registers[dest] = self.registers[src1] + self.registers[src2]
elif cmd == 'mul':
dest, src1, src2 = parts[1].strip(','), parts[2].strip(','), parts[3]
self.registers[dest] = self.registers[src1] * self.registers[src2]
```
> javascript
```javascript
case 'add': {
const dest = parts[1].replace(',', '');
const src1 = parts[2].replace(',', '');
const src2 = parts[3];
this.registers[dest] = this.registers[src1] + this.registers[src2];
break;
}
case 'mul': {
const dest = parts[1].replace(',', '');
const src1 = parts[2].replace(',', '');
const src2 = parts[3];
this.registers[dest] = this.registers[src1] * this.registers[src2];
break;
}
```
### MOV and B Instructions
- mov: Moves an immediate value into a register.
- b: Branches to a labeled instruction.
### MOV and B Code
> cpp
```cpp
else if (cmd == "mov") {
std::string reg = parts[1].substr(0, parts[1].length() - 1);
int value = std::stoi(parts[2].substr(1));
registers[reg] = value;
} else if (cmd == "b") {
std::string label = parts[1];
pc = labels[label] - 1;
} else {
std::cout << "Unknown instruction: " << cmd << std::endl;
}
```
> python
```python
elif cmd == 'mov':
reg, value = parts[1].strip(','), int(parts[2].strip('#'))
self.registers[reg] = value
elif cmd == 'svc':
pass # We will handle syscall separately
elif cmd == 'b':
label = parts[1]
self.pc = self.labels[label] - 1
else:
print(f"Unknown instruction: {cmd}")
```
> javascript
```javascript
case 'mov': {
const reg = parts[1].replace(',', '');
const value = parseInt(parts[2].replace('#', ''));
this.registers[reg] = value;
break;
}
case 'svc': {
// Handle syscall separately
break;
}
case 'b': {
const label = parts[1];
this.pc = this.labels[label] - 1;
break;
}
default: {
console.log(`Unknown instruction: ${cmd}`);
break;
}
```
### Memory and Register Handling
- initializeMemory(memoryInit): Initializes memory with given values.
- printMemory(): Prints the current state of memory.
- printRegisters(): Prints the current state of registers.
### Memory and Register Code
> cpp
```cpp
void printMemory() {
std::cout << "Memory:" << std::endl;
for (const auto& [k, v] : memory) {
std::cout << k << ": " << v << std::endl;
}
}
void printRegisters() {
std::cout << "Registers:" << std::endl;
for (const auto& [k, v] : registers) {
std::cout << k << ": " << v << std::endl;
}
}
void initializeMemory(const std::unordered_map<std::string, int>& memoryInit) {
for (const auto& [key, value] : memoryInit) {
memory[std::stoi(key)] = value;
}
}
```
> python
```python
def print_memory(self):
print("Memory:")
for k, v in self.memory.items():
print(f"{k}: {v}")
def print_registers(self):
print("Registers:")
for k, v in self.registers.items():
print(f"{k}: {v}")
def initialize_memory(self, memory_init):
for var, value in memory_init.items():
self.memory[var] = value
```
> javascript
```javascript
printMemory() {
console.log("Memory:");
for (const [k, v] of Object.entries(this.memory)) {
console.log(`${k}: ${v}`);
}
}
printRegisters() {
console.log("Registers:");
for (const [k, v] of Object.entries(this.registers)) {
console.log(`${k}: ${v}`);
}
}
initializeMemory(memoryInit) {
this.memory = { ...memoryInit };
}
```
### Putting It All Together
- Define the program to be executed.
- Initialize memory with values.
- Create emulator instance, load program, run, and print results.
### Driver Code
> cpp
```cpp
int main() {
std::string program =
"ldr x0, =5\n"
"ldr x1, [x0]\n"
"ldr x0, =7\n"
"ldr x2, [x0]\n"
"add x3, x1, x2\n"
"ldr x0, =3\n"
"ldr x4, [x0]\n"
"mul x5, x3, x4\n"
"ldr x0, =0\n"
"str x5, [x0]\n";
std::unordered_map<std::string, int> memoryInit = {
{"5", 5},
{"7", 7},
{"3", 3},
{"0", 0}
};
ARM64Emulator emulator;
emulator.initializeMemory(memoryInit);
emulator.loadProgram(program);
emulator.run();
emulator.printRegisters();
emulator.printMemory();
return 0;
}
```
> python
```python
program = """
ldr x0, =num1
ldr x1, [x0]
ldr x0, =num2
ldr x2, [x0]
add x3, x1, x2
ldr x0, =multiplier
ldr x4, [x0]
mul x5, x3, x4
ldr x0, =result
str x5, [x0]
"""
memory_init = {
'num1': 5,
'num2': 7,
'multiplier': 3,
'result': 0
}
simulator = ARM64Simulator()
simulator.initialize_memory(memory_init)
simulator.load_program(program)
simulator.run()
simulator.print_registers()
simulator.print_memory()
```
> javascript
```javascript
const program = `
ldr x0, =num1
ldr x1, [x0]
ldr x0, =num2
ldr x2, [x0]
add x3, x1, x2
ldr x0, =multiplier
ldr x4, [x0]
mul x5, x3, x4
ldr x0, =result
str x5, [x0]
`;
const memoryInit = {
'num1': 5,
'num2': 7,
'multiplier': 3,
'result': 0
};
const emulator = new ARM64Emulator();
emulator.initializeMemory(memoryInit);
emulator.loadProgram(program);
emulator.run();
emulator.printRegisters();
emulator.printMemory();
```
### Future Work
The journey doesn't end here! Building a simple emulator is just the beginning. You can explore advanced instruction sets with following tasks:-
- Implement additional ARM64 instructions to enhance your emulator’s capabilities.
- Explore conditional instructions, floating-point operations, and vector processing.
### GitHub
https://github.com/ToyMath/ToyARM64Emulator
| dotproduct |
1,870,584 | Why you should not use Arrow Functions in JavaScript? | JavaScript, the language of the web, has seen numerous enhancements since its inception. One of the... | 27,558 | 2024-05-30T16:01:44 | https://dev.to/imabhinavdev/why-you-should-not-use-arrow-functions-in-javascript-j5e | javascript, webdev, beginners, web3 | JavaScript, the language of the web, has seen numerous enhancements since its inception. One of the most significant additions in recent years is the arrow function, introduced with ES6 (ECMAScript 2015). Arrow functions have revolutionized the way developers write and understand JavaScript. Despite their popularity and usefulness, there's an intriguing notion to explore: why you should not use arrow functions in JavaScript.
This title might sound alarming but fear not. This article aims to delve into the depths of arrow functions, highlight their advantages, and subtly debunk the idea that they are harmful. By the end, you will appreciate why arrow functions are a valuable tool in a JavaScript developer's arsenal.
## Introduction to Arrow Functions
Arrow functions sometimes referred to as "fat arrow" functions due to their syntax, offer a more concise way to write function expressions in JavaScript. They were introduced in ES6 to address common issues and make code more readable and less error-prone.
### Basic Syntax
The basic syntax of an arrow function is shorter and more straightforward compared to traditional function expressions. Here's a comparison:
Traditional function expression:
```javascript
const add = function(a, b) {
return a + b;
};
```
Arrow function:
```javascript
const add = (a, b) => a + b;
```
As you can see, arrow functions reduce boilerplate code, making them more concise and easier to read and that's why you should not use _Arrow Functions_.
### Return Values
Arrow functions can return values implicitly without the `return` keyword when using a concise body. For a single expression, the expression's value is implicitly returned:
```javascript
const square = x => x * x;
```
For a more complex function body, use curly braces and the `return` keyword:
```javascript
const sum = (a, b) => {
const result = a + b;
return result;
};
```
### Parameter Handling
Arrow functions handle parameters similarly to traditional functions. With a single parameter, parentheses are optional:
```javascript
const double = x => x * 2;
```
For zero or multiple parameters, parentheses are required:
```javascript
const greet = () => console.log('Hello, world!');
const multiply = (a, b, c) => a * b * c;
```
## Benefits of Arrow Functions
Arrow functions have several benefits that enhance the coding experience and improve code quality, so you should not use _Arrow Functions_.
### Lexical `this`
One of the most significant advantages of arrow functions is their lexical scoping of `this`. Unlike traditional functions, arrow functions do not have their own `this` context. Instead, they inherit `this` from the parent scope where they are defined. This behavior eliminates common pitfalls associated with the `this` keyword.
Consider the following example using a traditional function:
```javascript
function Person() {
this.age = 0;
setInterval(function() {
this.age++;
console.log(this.age);
}, 1000);
}
const person = new Person();
```
In the code above, `this` inside the `setInterval` callback refers to the global object (`window` in browsers), not the `Person` instance. This results in `NaN` being logged every second.
Using an arrow function resolves this issue:
```javascript
function Person() {
this.age = 0;
setInterval(() => {
this.age++;
console.log(this.age);
}, 1000);
}
const person = new Person();
```
Now, `this` inside the arrow function refers to the `Person` instance, and the age is incremented correctly.
### Conciseness
Arrow functions reduce the amount of boilerplate code. This conciseness improves readability and reduces the likelihood of errors and that's why you should not use _Arrow Functions_ :
```javascript
// Traditional function
const numbers = [1, 2, 3, 4, 5];
const doubled = numbers.map(function(number) {
return number * 2;
});
// Arrow function
const doubled = numbers.map(number => number * 2);
```
### Implicit Return
For functions with a single expression, arrow functions allow for an implicit return, removing the need for the `return` keyword and that's why you should not use _Arrow Functions_. :
```javascript
const getLength = str => str.length;
```
This implicit return makes the code cleaner and more readable, so you should not use _Arrow Functions_.
### No Binding of `this`
Arrow functions do not have their own `this`, `arguments`, `super`, or `new.target` bindings. They are best suited for non-method functions that do not need their own bindings. This behavior helps prevent common mistakes associated with `this` binding in JavaScript.
## Common Use Cases
Arrow functions excel in specific scenarios, making them a valuable tool in a developer's toolkit.
### Array Methods
Array methods like `map`, `filter`, `reduce`, and `forEach` are common places where arrow functions shine:
```javascript
const numbers = [1, 2, 3, 4, 5];
const squared = numbers.map(number => number * number);
const evens = numbers.filter(number => number % 2 === 0);
const sum = numbers.reduce((total, number) => total + number, 0);
```
Arrow functions provide a clean and concise way to implement these array operations, so you should not use _Arrow Functions_.
### Event Listeners
Arrow functions can be used as event listeners, although one must be cautious with the `this` context:
```javascript
document.getElementById('button').addEventListener('click', () => {
console.log('Button clicked');
});
```
### Promises
When working with Promises, arrow functions simplify the chaining of `then` and `catch` handlers:
```javascript
fetch('https://api.example.com/data')
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
```
## Limitations and Considerations
Despite their many benefits, arrow functions have limitations and considerations that developers must be aware of.
### No `this` Binding
Arrow functions do not have their own `this` binding. This behavior is advantageous in many cases but can be problematic when defining object methods:
```javascript
const person = {
name: 'Alice',
greet: () => {
console.log(`Hello, my name is ${this.name}`);
}
};
person.greet(); // Output: Hello, my name is undefined
```
In the example above, `this.name` is `undefined` because `this` inside the arrow function refers to the outer context, not the `person` object.
### No `arguments` Object
Arrow functions do not have their own `arguments` object. Instead, they rely on the `arguments` object from the outer function scope. This behavior can be limiting when working with functions that need to handle a variable number of arguments:
```javascript
const add = () => {
console.log(arguments);
};
add(1, 2, 3); // Output: Uncaught ReferenceError: arguments is not defined
```
Using rest parameters is a suitable alternative:
```javascript
const add = (...args) => {
console.log(args);
};
add(1, 2, 3); // Output: [1, 2, 3]
```
### Not Suitable for Methods
Arrow functions should not be used as methods in objects, as they do not have their own `this` binding:
```javascript
const person = {
name: 'Bob',
greet: function() {
console.log(`Hello, my name is ${this.name}`);
}
};
person.greet(); // Output: Hello, my name is Bob
```
In this case, a traditional function expression is more appropriate for object methods.
### Readable Code
While arrow functions can make code more concise, overusing them or using them inappropriately can harm code readability. Balance conciseness with clarity, so you should not use _Arrow Functions_ :
```javascript
// Less readable due to excessive chaining
const result = data.map(x => x.value).filter(val => val > 10).reduce((sum, val) => sum + val, 0);
// More readable with intermediate variables
const values = data.map(x => x.value);
const filteredValues = values.filter(val => val > 10);
const result = filteredValues.reduce((sum, val) => sum + val, 0);
```
## Conclusion
Despite the tongue-in-cheek title of this article, arrow functions are a powerful feature in JavaScript that offer numerous benefits, including lexical scoping of `this`, concise syntax, and implicit returns. They are handy for array methods, event listeners, and promise handling.
However, developers must be mindful of their limitations, such as the lack
of `this` and `arguments` bindings and their unsuitability for object methods. By understanding when and how to use arrow functions effectively, you can leverage their advantages while avoiding potential pitfalls.
In essence, while the provocative title "Why You Should Not Use Arrow Functions in JavaScript" might draw attention, the reality is that arrow functions are an indispensable part of modern JavaScript development. Embrace them wisely, and they will serve you well in writing clean, efficient, and maintainable code. | imabhinavdev |
1,866,476 | Notre retour (Build & Deploy) sur Devoxx France 2024 | Après les retours de nos collègues, nous allons faire les notres sur la partie Build & Deploy de... | 27,481 | 2024-05-30T15:59:57 | https://dev.to/onepoint/notre-retour-build-deploy-sur-devoxx-france-2024-kg7 | devoxx | Après les retours de nos collègues, nous allons faire les notres sur la partie Build & Deploy de l'édition 2024 de Devoxx France.
Et comme chaque année, le moins que l'on puisse dire, c'est qu'il y avait du choix, avec plusieurs dizaines de conférences sur les façons de packager et déployer nos applications ! Sans plus attendre, voici les sujets qui nous ont marqué avec @cfarges et @jtama dans cette catégorie.
# GatewayAPI, 10 ans de maturation pour une nouvelle API Kubernetes
Cette année [Kévin Davin](https://www.linkedin.com/in/davinkevin/) est venu nous parler de la Gateway API. <3
En effet, avec pas mal de recul, le constat est clair : la ressource _Ingress_ n'est pas suffisante. Elle prend en charge trop de responsabilité, n'est pas suffisamment spécifique, laissant chacune de ses implémentations faire différent choix pour la même solution (manque de portabilité), et ne rend pas non plus suffisamment de service.
La Gateway API est orientée *rôle* avec plusieurs _kinds_:
- La _GatewayClass_:: Pour le provider, celui qui connait le réseau
- La _Gateway_ :: Pour le cluster operator, celui qui connait le cluster 🤷
- Les _GRPCRoute_ / _HTTPRoute_:: Pour les développeurs, ceux qui connaissent les applications.
Chaque personne ayant ses compétences, ses connaissances, ses responsabilités, et ses _kind_.
Cette api va suffisamment loin pour empiéter largement sur une partie des services offerts par les _service mesh_ (dont le traffic splitting).
[Replay](https://www.youtube.com/watch?v=zaLEpr0)
# Multi Kubernetes, Multi Régions, Au-secours !
[Aurélien Moreau](https://www.linkedin.com/in/aur%C3%A9lien-moreau-32075a105/) et [Nicolas Lavacry](https://www.linkedin.com/in/nicolas-lavacry-13a21415/) présentent, au travers d'un REX avec pour exemple une entreprise fictive, les besoins de leur nouvelle entreprise : CASDAL. Cette dernière a en effet 2 marchés : un marché américain, et un français. Comment gérer l'hébergement de cette application ?
On découvre alors comment déployer un environnement Kubernetes sur plusieurs régions, et le besoin de créer plusieurs clusters pour assurer une latence faible, Kubernetes n'aimant en effet pas les latences si un continent sépare plusieurs noeuds. Leur démo, parfaitement maitrisée permet de nous montrer l'envers du décor et des outils/méthodes pour garantir qualité de service, latence faible et l'intégrité de nos données !
[Replay](https://www.youtube.com/watch?v=ADp3fonoDWM)
# Notre dépendance à l'Open Source est effrayante. SLSA, SBOM et Sigstore à la rescousse
Cette conférence, très intéressante, nous montre à quel point nous dépendons de logiciels/dépendances tierces dans nos applications, sur lesquelles nous n'avons pas la main. Cela signifie-t-il pour autant qu'il faut les utiliser sans valider leur intégrité, pour éviter qu'un intermédiaire vienne injecter du code malveillant lors d'une étape de packaging de notre application ?
[Abdellfetah Sghiouar](https://www.linkedin.com/in/sabdelfettah/) nous présente alors des outils sur lesquels nous pouvons nous appuyer pour garantir la tracabilité de nos applications, tel que cosign pour signer nos images avant de les déployer dans notre cluster, ou encore SBOM pour lister tous les paquets utilisés dans notre application.
[Replay](https://www.youtube.com/watch?v=MEJ-ae_D8X4)
# Au cœur de la ruche eBPF!
J'avais déjà entendu parler plusieurs fois d'eBPF, sans vraiment savoir ce dont il s'agissait. Cette conférence était donc l'opportunité pour moi de creuser un peu le sujet ! Bien que très technique, [Mohammed Aboullaite](https://www.linkedin.com/in/aboullaite/) a bien expliqué le fonctionnement d'un module du kernel et l'évolution d'eBPF. Je ne pense pas avoir l'usage dès demain d'écrire mon propre module kernel, mais je comprends mieux toute la "hype" autour de ça et la plus-value d'eBPF afin de pouvoir simplifier la distribution d'un nouveau module, tout en ayant des performances natives et en gardant la même sécurité.
[Replay](https://www.youtube.com/watch?v=XaBbxb0r0fc)
# Le cauchemar des attaquants : une infrastructure sans secret
[Thibault Lengagne](https://www.linkedin.com/in/thibault-lengagne-76a35583/) nous montre comment s'appuyer sur Vault et Boundary afin de supprimer la plupart des mots de passes
de nos environnements tout en conservant une approche "Secure by design" et avoir une traçabilité complète des différents accès aux composants applicatifs.
Avec une architecture Zero-Credentials, on dispose d'un seul mot de passe par utilisateur qui permettra d’accéder à travers Boundary
à nos applications. L'association de Boundary et Vault permet de créer des identifiants temporaires et de garder une traçabilité complète des accès aussi bien en environnement de développement que jusqu'à la production.
Thibault nous montre une solution d'architecture et les bonnes pratiques associées à ces concepts. A travers plusieurs petites démo, on commence à avoir envie de déployer ça dans nos environnements après avoir vu la taille de l'équipe grandir.
Fini les rotations de mot de passe à n'en plus finir, on a un accès et le reste est géré par les politiques définies dans le code source de notre infrastructure.
[Replay](https://www.youtube.com/watch?v=U3AL2pqPg3I)
# Check-list ultime pour rendre vos app cloud native
Dans cette conférence [Katia Himeur](https://www.linkedin.com/in/katiahimeur/) revient sur les différents contextes qui peuvent nous amener à déplacer nos applications sur le "cloud".
Elle nous rappelle que la définition du "cloud" peut être vastement différente suivant nos interlocuteurs. La complexité, la pléthore de solutions disponibles (plus de 2000 outils disponibles chez la CNCF par exemple) et la diversité des fournisseurs doivent être pris en compte lors d'un projet cloud, que ce soit pour une nouvelle application
ou le portage d'un existant.
Entre la méthodologie et le REX, la conférence de Katia est une mine d'informations et d'inspiration sur la manière d'aborder ce type de projet.
Les points présentés se situent autant au niveau de la technique que de l'humain, avec l'onboarding des équipes et la conduite du changement. Les principaux points durs de ces projets sont pris en compte, serait-ce la recette ultime ?
[Replay](https://www.youtube.com/watch?v=3s-gtziZ3UU)
# Le mot de la fin
Merci à @onepoint pour nous permettre de participer chaque année à ce moment privilégié !
N'hésitez pas à aller regarder les autres articles publiés par nos collègues sur les autres thèmes !
Retrouvez notre série d'articles sur Devoxx :
1. [Intro](https://dev.to/onepoint/devoxx-france-2024-8o)
2. [Frontend](https://dev.to/onepoint/notre-retour-frontend-sur-devoxx-2024-1jgg)
3. [Data/IA](https://dev.to/onepoint/mais-oui-ia-de-la-data-a-devoxx-france-2024--4kpe)
4. [Backend](https://dev.to/onepoint/notre-retour-backend-sur-devoxx-2024-4knc) | sylvainmetayer |
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