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 |
|---|---|---|---|---|---|---|---|---|
1,888,835 | How To Install Next js and set up Visual Studio Code (VS Code) | Learn how to install Next.js and set up Visual Studio Code (VS Code) for a seamless development... | 0 | 2024-06-14T17:06:36 | https://dev.to/dimerbwimba/how-to-install-next-js-and-set-up-visual-studio-code-vs-code-dgl | tutorial, nextjs, vscode, typescript | {% embed https://youtu.be/Xsac_H9d2OM %}
Learn how to install Next.js and set up Visual Studio Code (VS Code) for a seamless development experience.
In this tutorial, we cover everything from installing Next.js to configuring VS Code with the best extensions and settings for Next.js development. Whether you're a beginner or an experienced developer, this step-by-step guide will help you get started quickly and efficiently. | dimerbwimba |
1,885,648 | How To Build an AI-Powered Voice Assistant With Twilio, Laravel, and OpenAI | Voice assistants, such as Amazon Alexa and Apple's Siri have become integral to people’s lives, as... | 0 | 2024-06-14T17:06:30 | https://www.twilio.com/en-us/blog/build-ai-powered-voice-assistant-twilio-laravel-openai | ai, openai, laravel, php | Voice assistants, such as Amazon Alexa and Apple's Siri have become integral to people’s lives, as they're so helpful with mundane tasks, such as setting reminders and turning on smart home devices. However, most voice assistants struggle with complex questions and queries, leaving users disappointed.
In this tutorial, you will learn how to build an AI-powered voice assistant that can understand and respond to complex questions using Twilio Programmable Voice and OpenAI.
## Prerequisites
To complete this tutorial, you will need the following:
- A Twilio account, free or paid. If you don't have one, [create a Twilio account for free](https://www.twilio.com/try-twilio).
- A phone number you own. [Add it to your Twilio account](https://help.twilio.com/articles/223180048-How-to-Add-and-Remove-a-Verified-Phone-Number-or-Caller-ID-with-Twilio?_ga=2.5842992.288769677.1718382100-1858507213.1708114003&_gl=1*p29jxb*_gcl_au*NzAwOTQ1MDkzLjE3MTU5NjkwMjI.*_ga*MTg1ODUwNzIxMy4xNzA4MTE0MDAz*_ga_RRP8K4M4F3*MTcxODM4MjA5OC44My4xLjE3MTgzODIxNDcuMC4wLjA.#h_01GQT9YZMY444KNH3M5AK065GX).
- PHP 8.2 (or higher) installed
- [Composer](https://getcomposer.org/) installed globally
- An OpenAI account. [Create a free account here](https://openai.com/).
- [ngrok](https://ngrok.com/) and a free ngrok account
- Basic knowledge of the [Laravel](https://laravel.com/docs/10.x/installation) framework would be nice, although it’s not required
### Build the AI-powered voice assistant
#### Create a new Laravel project
To create a new Laravel project using Composer, you need to run the command below in your terminal.
```bash
composer create-project laravel/laravel voice-assistant
```
Next, navigate to the project’s working directory and start the application development server by running the commands below in the terminal.
```bash
cd voice-assistant
php artisan serve
```
Once the application server is up, open http://localhost:8000/ in your browser to access the default Laravel welcome page, as shown in the image below.
The next step is to open the project in your preferred IDE or text editor.
#### Install the Twilio PHP Helper Library
The [Twilio PHP Helper Library](https://www.twilio.com/docs/libraries/reference/twilio-php/) provides functionality for interacting with Twilio's APIs. With this library, you can easily interact with [Twilio Programmable Voice](https://www.twilio.com/docs/voice) in the application. Twilio Programmable Voice uses [Twilio Markup language(TwiML)](https://www.twilio.com/docs/voice/twiml), to specify the desired behaviour when receiving an incoming call or SMS.
In your project’s working directory, run the command below in a new terminal window or tab to install the library.
```bash
composer require twilio/sdk
```
#### Retrieve your Twilio API credentials
You will need your **Account SID** and **Auth Token** to interact with Twilio Programmable Voice using the Twilio PHP Helper Library. You can find them in the **Account Info** panel on your [Twilio Console dashboard](https://console.twilio.com/?_ga=2.75769622.288769677.1718382100-1858507213.1708114003&_gl=1*135cmdu*_gcl_au*NzAwOTQ1MDkzLjE3MTU5NjkwMjI.*_ga*MTg1ODUwNzIxMy4xNzA4MTE0MDAz*_ga_RRP8K4M4F3*MTcxODM4MjA5OC44My4xLjE3MTgzODIxNDcuMC4wLjA.), as shown in the image below. Copy the respective values.
#### Store the Twilio access token in your .env file
After retrieving your Twilio access tokens, you need to ensure that they are stored securely in your project using environment variables.
In your project’s root directory, locate the _.env_ file. This file is used to securely store sensitive data and other configuration data. Update it with the following:
```text
TWILIO_SID=<your_twilio_account_sid>
TWILIO_AUTH_TOKEN=<your_twilio_account_auth_token>
TWILIO_PHONE_NUMBER=<your twilio_account_phone_number>
```
Then, replace the placeholders with your corresponding Twilio access token values which you just copied.
#### Install the OpenAI Laravel Helper Library
OpenAI is a leading AI research lab known for creating advanced language models trained on extensive amounts of data. The OpenAI Laravel package allows you to easily use OpenAI models in your application. Install the package by running the command below.
```bash
composer require openai-php/laravel
```
Finally, set up the package configurations by executing the below command:
```bash
php artisan openai:install
```
This command will create a new file called _openai.php_ in the _config_ folder. The file contains the configurations required to connect to the OpenAI API.
To use the OpenAI API, you'll need an API key for authentication. [Log in to your OpenAI account](https://platform.openai.com/docs/overview) and navigate to the **API Keys** section. Click **Create new secret key** to generate your key.
After retrieving the key, store it and add the below line to your _.env_ file
```text
OPENAI_API_KEY=<your_openAI_api_key>
```
Remember also to replace the placeholder with your corresponding API Key.
#### Update the routes
Run the command below in your terminal.
```php
php artisan install:api
```
This command will create a new file named _api.php_ in the _routes_ folder. Add the below `import` statement at the beginning of the new file.
```php
use App\Http\Controllers\VoiceController;
```
Then, update the file contents to include the following routes.
```php
Route::post('/voice', [VoiceController::class, 'voiceInput']);
Route::post('/chat', [VoiceController::class, 'speechtoText']);
```
Here you are defining the routes for the voice and chat endpoints.
**Note**: In Laravel, API [routes](https://laravel.com/docs/11.x/routing) defined in the api.php file have a prefix of `api/`. This means the route defined as `/voice` will be accessible at `/api/voice`. The same applies to `/chat`.
#### Create the controller
The next step is to create a controller class that will house all the application logic. To create the controller, run the command below in your terminal.
```bash
php artisan make:controller VoiceController
```
This command will create a new file called _VoiceController.php_ in the _app/Http/Controllers_ folder.
Open the _VoiceController.php_ file and replace the content with the following.
```php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Twilio\TwiML\VoiceResponse;
use OpenAI\Laravel\Facades\OpenAI;
class VoiceController extends Controller
{
private $response;
public function __construct()
{
$this->response = new VoiceResponse();
}
public function voiceInput(Request $request)
{
$gather = $this->response->gather(['input' => 'speech', 'action' => '/api/chat']);
$gather->say('Hello, I am your personal assistant. How can I help you today?');
return $this->response;
}
public function speechtoText(Request $request)
{
$result = OpenAI::chat()->create([
'model' => 'gpt-3.5-turbo',
'messages' => [
['role' => 'user', 'content' => $request->SpeechResult],
],
]);
$this->response->say($result->choices[0]->message->content);
$this->response->gather(['input' => 'speech', 'action' => '/api/chat']);
return $this->response;
}
}
```
In the code above, the necessary imports required for the voice assistant are added. In the `voiceInput()` function, the TwiML (Twilio Markup Language) `gather()` method listens for the caller's input, and specifies the action to take on receiving it. Next, the TwiML `say()` method is used to prompt the caller. The `gather()` method converts the audio received into text and adds the transcribed audio to the `$request` object using the parameter `speechResult`.
After gathering the user's input, the `$request` object is sent as a POST request to the `/api/chat` endpoint, corresponding to the `speechToText()` function. The `speechToText()` function retrieves the transcribed audio from the request using the `speechResult` parameter and then forwards this transcribed audio to OpenAI Chat API for processing.
OpenAI's Chat API requires a role parameter containing a message with a system role and content for the intended actions. The model must also be configured, it is set to `gpt-3.5-turbo` in this tutorial. Finally, TwiML is used to return the response from OpenAI to the user in audio format.
### Set up the Ngrok server
To make your voice assistant accessible from the internet, you can use a tool called [Ngrok](https://ngrok.com/). Ngrok allows you to expose your local Laravel server to the internet.
Run the command below in your project's root directory.
```bash
ngrok http 8000
```
This command creates a secure tunnel that allows you to access your local Laravel server running on port 8000 from a public URL provided by Ngrok.
After executing the command, you should see the following in your terminal.
Copy the Forwarding URL displayed here.
### Configure TwiML
#### Create a New TwiML App
Next, you need to create a new TwiML app. This is to ensure reusability across multiple phone numbers. You would be able to easily add the created TwiML app to any number in your Twilio account.
In your [Twilio Console](https://console.twilio.com/?_ga=2.5818416.288769677.1718382100-1858507213.1708114003&_gl=1*k7cuvg*_gcl_au*NzAwOTQ1MDkzLjE3MTU5NjkwMjI.*_ga*MTg1ODUwNzIxMy4xNzA4MTE0MDAz*_ga_RRP8K4M4F3*MTcxODM4MjA5OC44My4xLjE3MTgzODIxNDcuMC4wLjA.), navigate to **Explore Products > Voice > Manage > TwiML apps**, and select **Create new TwiML App**.
Then, fill out the form, as in the screenshot above, and replace `<your_ngrok_address>` with the Ngrok Forwarding URL you copied earlier, append "**/api/voice**" to the end of it, and click **Create**.
#### Add TwiML to your number
You must also add the created TwiML app to your phone number to ensure that Twilio executes your code when a call is made to/from the phone number.
In the Twilio Console, navigate to **Phone Numbers > Manage > Active numbers**, and click on your Twilio number.
Then, in the **Voice Configuration** section for your phone number, set **Configure with** to **TwiML App**, set **TwiML App** to your TwiML app, and then click **Save**.
### Test the application
It’s finally time to see your AI-powered voice assistant in action! You can test it by calling your Twilio phone number from your verified phone number.
When you successfully set up the system, a call will be made to your Twilio phone number. A voice prompt will ask for your request and the system will intelligently respond to it.
### What’s next for building an AI-powered voice assistant with Twilio, Laravel, and OpenAI?
Congratulations on successfully creating your very own AI-powered voice assistant using Twilio Programmable Voice and OpenAI!
This comprehensive tutorial guided you through setting up the necessary tools, integrating Twilio and OpenAI, and building a voice assistant using the Laravel framework. Now, your voice assistant is ready to respond intelligently to any questions you might have.
So, what's next on your journey? Here are a few suggestions:
- **Integration with External APIs**: You can improve your voice assistant by integrating with external APIs. For example, you could integrate with e-commerce platforms to enable voice-based shopping experiences.
- **Interaction History**: You can also implement a feature that allows your voice assistant to remember previous interactions, and extract context from it. This would allow your voice assistant to provide more tailored and relevant responses.
Cheers to building and learning!
| thatcoolguy |
1,888,833 | Buy verified cash app account | https://dmhelpshop.com/product/buy-verified-cash-app-account/ Buy verified cash app account Cash... | 0 | 2024-06-14T17:06:03 | https://dev.to/lekocot138/buy-verified-cash-app-account-20db | webdev, javascript, beginners, programming | ERROR: type should be string, got "https://dmhelpshop.com/product/buy-verified-cash-app-account/\n\n\n\n\nBuy verified cash app account\nCash app has emerged as a dominant force in the realm of mobile banking within the USA, offering unparalleled convenience for digital money transfers, deposits, and trading. As the foremost provider of fully verified cash app accounts, we take pride in our ability to deliver accounts with substantial limits. Bitcoin enablement, and an unmatched level of security.\n\nOur commitment to facilitating seamless transactions and enabling digital currency trades has garnered significant acclaim, as evidenced by the overwhelming response from our satisfied clientele. Those seeking buy verified cash app account with 100% legitimate documentation and unrestricted access need look no further. Get in touch with us promptly to acquire your verified cash app account and take advantage of all the benefits it has to offer.\n\nWhy dmhelpshop is the best place to buy USA cash app accounts?\nIt’s crucial to stay informed about any updates to the platform you’re using. If an update has been released, it’s important to explore alternative options. Contact the platform’s support team to inquire about the status of the cash app service.\n\nClearly communicate your requirements and inquire whether they can meet your needs and provide the buy verified cash app account promptly. If they assure you that they can fulfill your requirements within the specified timeframe, proceed with the verification process using the required documents.\n\nOur account verification process includes the submission of the following documents: [List of specific documents required for verification].\n\nGenuine and activated email verified\nRegistered phone number (USA)\nSelfie verified\nSSN (social security number) verified\nDriving license\nBTC enable or not enable (BTC enable best)\n100% replacement guaranteed\n100% customer satisfaction\nWhen it comes to staying on top of the latest platform updates, it’s crucial to act fast and ensure you’re positioned in the best possible place. If you’re considering a switch, reaching out to the right contacts and inquiring about the status of the buy verified cash app account service update is essential.\n\nClearly communicate your requirements and gauge their commitment to fulfilling them promptly. Once you’ve confirmed their capability, proceed with the verification process using genuine and activated email verification, a registered USA phone number, selfie verification, social security number (SSN) verification, and a valid driving license.\n\nAdditionally, assessing whether BTC enablement is available is advisable, buy verified cash app account, with a preference for this feature. It’s important to note that a 100% replacement guarantee and ensuring 100% customer satisfaction are essential benchmarks in this process.\n\nHow to use the Cash Card to make purchases?\nTo activate your Cash Card, open the Cash App on your compatible device, locate the Cash Card icon at the bottom of the screen, and tap on it. Then select “Activate Cash Card” and proceed to scan the QR code on your card. Alternatively, you can manually enter the CVV and expiration date. How To Buy Verified Cash App Accounts.\n\nAfter submitting your information, including your registered number, expiration date, and CVV code, you can start making payments by conveniently tapping your card on a contactless-enabled payment terminal. Consider obtaining a buy verified Cash App account for seamless transactions, especially for business purposes. Buy verified cash app account.\n\nWhy we suggest to unchanged the Cash App account username?\nTo activate your Cash Card, open the Cash App on your compatible device, locate the Cash Card icon at the bottom of the screen, and tap on it. Then select “Activate Cash Card” and proceed to scan the QR code on your card.\n\nAlternatively, you can manually enter the CVV and expiration date. After submitting your information, including your registered number, expiration date, and CVV code, you can start making payments by conveniently tapping your card on a contactless-enabled payment terminal. Consider obtaining a verified Cash App account for seamless transactions, especially for business purposes. Buy verified cash app account. Purchase Verified Cash App Accounts.\n\nSelecting a username in an app usually comes with the understanding that it cannot be easily changed within the app’s settings or options. This deliberate control is in place to uphold consistency and minimize potential user confusion, especially for those who have added you as a contact using your username. In addition, purchasing a Cash App account with verified genuine documents already linked to the account ensures a reliable and secure transaction experience.\n\n \n\nBuy verified cash app accounts quickly and easily for all your financial needs.\nAs the user base of our platform continues to grow, the significance of verified accounts cannot be overstated for both businesses and individuals seeking to leverage its full range of features. How To Buy Verified Cash App Accounts.\n\nFor entrepreneurs, freelancers, and investors alike, a verified cash app account opens the door to sending, receiving, and withdrawing substantial amounts of money, offering unparalleled convenience and flexibility. Whether you’re conducting business or managing personal finances, the benefits of a verified account are clear, providing a secure and efficient means to transact and manage funds at scale.\n\nWhen it comes to the rising trend of purchasing buy verified cash app account, it’s crucial to tread carefully and opt for reputable providers to steer clear of potential scams and fraudulent activities. How To Buy Verified Cash App Accounts. With numerous providers offering this service at competitive prices, it is paramount to be diligent in selecting a trusted source.\n\nThis article serves as a comprehensive guide, equipping you with the essential knowledge to navigate the process of procuring buy verified cash app account, ensuring that you are well-informed before making any purchasing decisions. Understanding the fundamentals is key, and by following this guide, you’ll be empowered to make informed choices with confidence.\n\n \n\nIs it safe to buy Cash App Verified Accounts?\nCash App, being a prominent peer-to-peer mobile payment application, is widely utilized by numerous individuals for their transactions. However, concerns regarding its safety have arisen, particularly pertaining to the purchase of “verified” accounts through Cash App. This raises questions about the security of Cash App’s verification process.\n\nUnfortunately, the answer is negative, as buying such verified accounts entails risks and is deemed unsafe. Therefore, it is crucial for everyone to exercise caution and be aware of potential vulnerabilities when using Cash App. How To Buy Verified Cash App Accounts.\n\nCash App has emerged as a widely embraced platform for purchasing Instagram Followers using PayPal, catering to a diverse range of users. This convenient application permits individuals possessing a PayPal account to procure authenticated Instagram Followers.\n\nLeveraging the Cash App, users can either opt to procure followers for a predetermined quantity or exercise patience until their account accrues a substantial follower count, subsequently making a bulk purchase. Although the Cash App provides this service, it is crucial to discern between genuine and counterfeit items. If you find yourself in search of counterfeit products such as a Rolex, a Louis Vuitton item, or a Louis Vuitton bag, there are two viable approaches to consider.\n\n \n\nWhy you need to buy verified Cash App accounts personal or business?\nThe Cash App is a versatile digital wallet enabling seamless money transfers among its users. However, it presents a concern as it facilitates transfer to both verified and unverified individuals.\n\nTo address this, the Cash App offers the option to become a verified user, which unlocks a range of advantages. Verified users can enjoy perks such as express payment, immediate issue resolution, and a generous interest-free period of up to two weeks. With its user-friendly interface and enhanced capabilities, the Cash App caters to the needs of a wide audience, ensuring convenient and secure digital transactions for all.\n\nIf you’re a business person seeking additional funds to expand your business, we have a solution for you. Payroll management can often be a challenging task, regardless of whether you’re a small family-run business or a large corporation. How To Buy Verified Cash App Accounts.\n\nImproper payment practices can lead to potential issues with your employees, as they could report you to the government. However, worry not, as we offer a reliable and efficient way to ensure proper payroll management, avoiding any potential complications. Our services provide you with the funds you need without compromising your reputation or legal standing. With our assistance, you can focus on growing your business while maintaining a professional and compliant relationship with your employees. Purchase Verified Cash App Accounts.\n\nA Cash App has emerged as a leading peer-to-peer payment method, catering to a wide range of users. With its seamless functionality, individuals can effortlessly send and receive cash in a matter of seconds, bypassing the need for a traditional bank account or social security number. Buy verified cash app account.\n\nThis accessibility makes it particularly appealing to millennials, addressing a common challenge they face in accessing physical currency. As a result, ACash App has established itself as a preferred choice among diverse audiences, enabling swift and hassle-free transactions for everyone. Purchase Verified Cash App Accounts.\n\n \n\nHow to verify Cash App accounts\nTo ensure the verification of your Cash App account, it is essential to securely store all your required documents in your account. This process includes accurately supplying your date of birth and verifying the US or UK phone number linked to your Cash App account.\n\nAs part of the verification process, you will be asked to submit accurate personal details such as your date of birth, the last four digits of your SSN, and your email address. If additional information is requested by the Cash App community to validate your account, be prepared to provide it promptly. Upon successful verification, you will gain full access to managing your account balance, as well as sending and receiving funds seamlessly. Buy verified cash app account.\n\n \n\nHow cash used for international transaction?\nExperience the seamless convenience of this innovative platform that simplifies money transfers to the level of sending a text message. It effortlessly connects users within the familiar confines of their respective currency regions, primarily in the United States and the United Kingdom.\n\nNo matter if you’re a freelancer seeking to diversify your clientele or a small business eager to enhance market presence, this solution caters to your financial needs efficiently and securely. Embrace a world of unlimited possibilities while staying connected to your currency domain. Buy verified cash app account.\n\nUnderstanding the currency capabilities of your selected payment application is essential in today’s digital landscape, where versatile financial tools are increasingly sought after. In this era of rapid technological advancements, being well-informed about platforms such as Cash App is crucial.\n\nAs we progress into the digital age, the significance of keeping abreast of such services becomes more pronounced, emphasizing the necessity of staying updated with the evolving financial trends and options available. Buy verified cash app account.\n\nOffers and advantage to buy cash app accounts cheap?\nWith Cash App, the possibilities are endless, offering numerous advantages in online marketing, cryptocurrency trading, and mobile banking while ensuring high security. As a top creator of Cash App accounts, our team possesses unparalleled expertise in navigating the platform.\n\nWe deliver accounts with maximum security and unwavering loyalty at competitive prices unmatched by other agencies. Rest assured, you can trust our services without hesitation, as we prioritize your peace of mind and satisfaction above all else.\n\nEnhance your business operations effortlessly by utilizing the Cash App e-wallet for seamless payment processing, money transfers, and various other essential tasks. Amidst a myriad of transaction platforms in existence today, the Cash App e-wallet stands out as a premier choice, offering users a multitude of functions to streamline their financial activities effectively. Buy verified cash app account.\n\nTrustbizs.com stands by the Cash App’s superiority and recommends acquiring your Cash App accounts from this trusted source to optimize your business potential.\n\nHow Customizable are the Payment Options on Cash App for Businesses?\nDiscover the flexible payment options available to businesses on Cash App, enabling a range of customization features to streamline transactions. Business users have the ability to adjust transaction amounts, incorporate tipping options, and leverage robust reporting tools for enhanced financial management.\n\nExplore trustbizs.com to acquire verified Cash App accounts with LD backup at a competitive price, ensuring a secure and efficient payment solution for your business needs. Buy verified cash app account.\n\nDiscover Cash App, an innovative platform ideal for small business owners and entrepreneurs aiming to simplify their financial operations. With its intuitive interface, Cash App empowers businesses to seamlessly receive payments and effectively oversee their finances. Emphasizing customization, this app accommodates a variety of business requirements and preferences, making it a versatile tool for all.\n\nWhere To Buy Verified Cash App Accounts\nWhen considering purchasing a verified Cash App account, it is imperative to carefully scrutinize the seller’s pricing and payment methods. Look for pricing that aligns with the market value, ensuring transparency and legitimacy. Buy verified cash app account.\n\nEqually important is the need to opt for sellers who provide secure payment channels to safeguard your financial data. 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\nThe Importance Of Verified Cash App Accounts\nIn today’s digital age, the significance of verified Cash App accounts cannot be overstated, as they serve as a cornerstone for secure and trustworthy online transactions.\n\nBy acquiring verified Cash App accounts, users not only establish credibility but also instill the confidence required to participate in financial endeavors with peace of mind, thus solidifying its status as an indispensable asset for individuals navigating the digital marketplace.\n\nWhen considering purchasing a verified Cash App account, it is imperative to carefully scrutinize the seller’s pricing and payment methods. Look for pricing that aligns with the market value, ensuring transparency and legitimacy. Buy verified cash app account.\n\nEqually important is the need to opt for sellers who provide secure payment channels to safeguard your financial data. 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" | lekocot138 |
1,888,832 | B.Sc. Nursing in Germany | Godzone Foreign Study offers an exceptional pathway for those pursuing a BSc in Nursing in Germany, a... | 0 | 2024-06-14T17:05:46 | https://dev.to/godzone_foreignstudy_6489/bsc-nursing-in-germany-3p5e | Godzone Foreign Study offers an exceptional pathway for those pursuing a [BSc in Nursing in Germany](https://godzoneforeignstudy.in/), a choice that promises a wealth of opportunities and experiences. Germany’s world-class education system, advanced healthcare infrastructure, and affordable tuition fees create an ideal environment for international students. With Godzone's comprehensive support—from application to post-arrival assistance—you can concentrate on your studies and professional development without logistical concerns. Start your journey towards a rewarding nursing career with us and embrace the chance to gain invaluable skills and experiences in one of the world’s leading healthcare systems.
| godzone_foreignstudy_6489 | |
1,888,830 | WebTable Automation using Selenium | A dynamic table is a table where the number of rows and columns can change frequently. To manage... | 0 | 2024-06-14T17:01:35 | https://dev.to/divya_devassure/webtable-automation-using-selenium-p9h | webdev, beginners, selenium, testing | A dynamic table is a table where the number of rows and columns can change frequently. To manage these changes, advanced techniques are required to locate and interact with elements within a dynamic table in Selenium.
## Automate Dynamic Tables using Selenium
In this blog we will focus on automating dynamic tables. The challenge with dynamic tables is dealing with complex locators (mostly XPaths), loops, and most importantly dealing with the dynamic data.
**Sample table to be considered for automation:**
*[Source: Fluent UI React Components](https://react.fluentui.dev/?path=/docs/components-table--default#focusable-elements-in-cells)*
### Building the WebElement locators
There are many good resources available to learn about XPaths. As a beginner, I found this [blog](https://www.testrigtechnologies.com/blogs/how-to-use-xpath-in-selenium-comprehensive-overview/) to be very useful.
For dynamic tables it's important to focus on building WebElement locators (mostly XPaths).
**Locating the Table Rows**
```java
var rows = driver.findElements(By.xpath("//div[@id='story--components-table--focusable-elements-in-cells']//tbody//tr[not(th)]"));
```
- An XPath is used to locate all the table rows.
- tr[not(th)] - this ensures that the headers if present are not included as part of the table rows because at this point we are only interested in the data rendered.
- This will return a list of locators to identify all the rows of the table except the table headers.
**Locating the cells in the table**
```java
var cells = row.findElements(By.cssSelector("td"));
```
For every row, the above locators helps find the child element - td
**Initialise the expected data**
*Note:* For this example alone we will use static initialization, but this is NOT recommended.
```java
var expectedData = List.of(
new String[]{"Meeting notes", "Max Mustermann", "7h ago"},
new String[]{"Thursday presentation", "Erika Mustermann", "Yesterday at 1:45 PM"},
new String[]{"Training recording", "John Doe", "Yesterday at 1:45 PM"},
new String[]{"Purchase order", "Jane Doe", "Tue at 9:30 AM"}
);
```
You will now have to loop through all the table rows and cells to validate the data.
**Here's the complete test code**
```java
@Test
public void validateTableData() {
// Load the URL
driver.get("https://react.fluentui.dev/?path=/docs/components-table--default#focusable-elements-in-cells");
// Initialise the expected data set
var expectedData = List.of(
new String[]{"Meeting notes", "Max Mustermann", "7h ago"},
new String[]{"Thursday presentation", "Erika Mustermann", "Yesterday at 1:45 PM"},
new String[]{"Training recording", "John Doe", "Yesterday at 1:45 PM"},
new String[]{"Purchase order", "Jane Doe", "Tue at 9:30 AM"}
);
// Locate the table rows
var rows = driver.findElements(By.xpath("//div[@id='story--components-table--focusable-elements-in-cells']//tbody//tr[not(th)]"));
// Validate the table data
for (int rowIndex = 0; rowIndex < rows.size(); rowIndex++) {
var row = rows.get(rowIndex);
var cells = row.findElements(By.cssSelector("td"));
for (int cellIndex = 0; cellIndex < cells.size(); cellIndex++) {
var cell = cells.get(cellIndex);
// Get the cell value
var text = cell.getText().trim();
// Validate
Assert.assertEquals(text, expectedData.get(rowIndex)[cellIndex], "Mismatch in column (" + cellIndex + ") at row " + rowIndex);
}
}
}
```
There is a major issue in the above code sample -
The expected data is hardcoded or is static. Ideally this should be obtained from the database or using APIs, which would require writing wrappers and a few lines of code as well. This will be handled as part of an upcoming blog.
There is another solution, by the use of Dynamic XPaths.
### What are dynamic XPaths
Dynamic XPath is an advanced concept in Selenium WebDriver, crafted to handle web elements that change their attributes dynamically.
You can learn more about dynamic XPaths [here](https://testgrid.io/blog/dynamic-xpath-in-selenium/).
```java
public WebElement getTableRow(String file, String author, String updated) {
return driver.findElement(By.xpath("//div[@id='story--components-table--focusable-elements-in-cells']//tbody//tr[.//td//*[text()='"+file+"']]//td//*[text()='"+author+"']//ancestor::td//following-sibling::td[text()='"+updated+"']"));
}
```
**Here's the complete code with dynamic XPaths**
```java
@Test
public void validateTableDataWithDynamicXpath() {
// Load the URL
driver.get("https://react.fluentui.dev/?path=/docs/components-table--default#focusable-elements-in-cells");
// Initialise the expected data set
var expectedData = List.of(
new String[]{"Meeting notes", "Max Mustermann", "7h ago"},
new String[]{"Thursday presentation", "Erika Mustermann", "Yesterday at 1:45 PM"},
new String[]{"Training recording", "John Doe", "Yesterday at 1:45 PM"},
new String[]{"Purchase order", "Jane Doe", "Tue at 9:30 AM"}
);
for (String[] data : expectedData) {
// Get the WebElement based on test data
WebElement row = getTableRow(data[0], data[1], data[2]);
// Validate presence
Assert.assertTrue(row.isDisplayed(), "Row not found");
}
}
```
### Which of the 2 approaches is better?
That depends on what needs to be validated. If it's for a single row or single value, approach #2 works.
But with approach #2 the XPaths need to be as simplified as possible to enable ease of maintenance and this will not work if the table's columns keep changing.
For entire table validations, I would prefer approach #1, again the key here is to simplify the XPaths as much as possible for maintainability.
### Automating components with Dynamic Locators using DevAssure
With DevAssure you can automate components with dynamic locators with ease. You will have a custom automation framework that align with your product requirements without the overhead of maintaining the framework itself.
**[Learn more about the DevAssure Automation App](https://www.devassure.io/features)** | divya_devassure |
1,888,831 | What is not machine learning ? | What is Not Machine Learning? In this video, we dive deep into the world of artificial... | 0 | 2024-06-14T17:00:07 | https://dev.to/dimerbwimba/what-is-not-machine-learning--4mhc | tutorial, ai, machinelearning, deeplearning | ## What is Not Machine Learning?
{% embed https://youtu.be/jV2SVEm1uNw %}
In this video, we dive deep into the world of artificial intelligence to clarify what machine learning is not. There's a lot of buzz around AI and machine learning, but it's crucial to understand the distinctions to avoid common misconceptions.
🔍 Topics Covered:
Understanding the basics of machine learning
Distinguishing machine learning from traditional programming
Common myths and misconceptions about machine learning
Examples of AI that do not involve machine learning
The role of data and algorithms in machine learning
Future trends and the evolution of AI technologies
🤔 Why This Matters:
Grasping what machine learning isn't helps in comprehending what it truly is and how it functions. This understanding is essential for anyone interested in AI, whether you're a student, professional, or just a tech enthusiast.
📢 Join the Conversation:
Have questions or thoughts on the topic? Drop a comment below! Don't forget to like, subscribe, and hit the bell icon to stay updated with our latest content.
🌟 About Us:
Welcome to [Code With Dimer](https://www.youtube.com/channel/UCYkCkKI1prBXxMiLmichJMw)! We provide insightful content on artificial intelligence, machine learning, and cutting-edge technology. Our goal is to make complex topics accessible and engaging for everyone. | dimerbwimba |
1,888,829 | HVAC experts | Discovering reliable heating and cooling solutions in Salt Lake City, Utah is crucial, especially... | 0 | 2024-06-14T16:52:19 | https://dev.to/waitetara/hvac-experts-17pb | Discovering reliable heating and cooling solutions in Salt Lake City, Utah is crucial, especially with the extreme weather conditions we experience. Fortunately, HVAC experts in the area are well-equipped to handle residential and industrial heating and cooling needs with precision and efficiency. If you're in need of professional heater cleaning services, look no further than RM HVAC Services at heat pump servicing [visit site](https://www.rmhvacutah.com/heating-services/maintenance) heater maintenance . Specializing in boiler repair and maintenance, they ensure optimal performance for your heating system. Accessing prompt and dependable heating and cooling services in Utah has never been easier, with many HVAC contractors offering convenient online service requests. Contacting them via email, fax, or phone guarantees timely assistance. It's worth noting that accredited technicians, like those certified by NATE and members of A/C Contractors of America, bring valuable expertise to the table. NATE-certified professionals demonstrate standardized knowledge of heating, ventilation, and air conditioning systems, ensuring top-notch service quality. When seeking HVAC specialists in Utah, prioritize licensed professionals to ensure the highest level of service. RM HVAC Services stands out in this regard, handling all heating, cooling, and filtration systems, including boilers from trusted brands like Provider, Lennox, Amana, Goodman, and more. | waitetara | |
1,888,828 | Day 18 of my progress as a vue dev | About today Today I coded the frontend of my audio editor project and defined the complete file... | 0 | 2024-06-14T16:49:45 | https://dev.to/zain725342/day-18-of-my-progress-as-a-vue-dev-17c4 | webdev, vue, typescript, tailwindcss | **About today**
Today I coded the frontend of my audio editor project and defined the complete file structure for the app. It was not the hard part but essential to be done properly in the beginning so that when it's time to dive in the functionality part of the project the frontend is at least not something to be concerned about.
**What's next?**
I will start working on the functionality and the flow of application and figure it out bit by bit to ensure everything is smooth. I also wanna spend as much time as I can on the functionality part and testing it.
**Improvements required**
The for now is not the most visually appealing but it does the job of providing a view for the functional aspect of the project when implemented. I may come back to it once completely done with the functional implementation to tweak things a bit.
Wish me luck! | zain725342 |
1,888,827 | Redeem Temu Coupon Code (acp856709) $100 off For All | To get $100 off Temu Coupon Code with a 30% discount, you can use the following codes: [acp856709]:... | 0 | 2024-06-14T16:47:58 | https://dev.to/subhamshooter/redeem-temu-coupon-code-acp856709-100-off-for-all-203g | To get $100 off Temu Coupon Code with a 30% discount, you can use the following codes:
[acp856709]: This code offers $100 off and a 30% special discount. It is applicable for both new and existing customers.
[acp856709] or [frf048797]: These codes provide $100 off and an additional 30% discount. They are also suitable for new customers.
[acp856709]: This code is specifically for new customers and offers $100 off with a 30% discount.
[acp856709]: This code is for Brazil and offers $100 off with an additional 30% discount on various product categories.
Please note that these codes may have specific terms and conditions, such as being applicable only for new customers or for specific product categories. | subhamshooter | |
1,888,826 | Create a Web API with MongoDB | Hello guys! Today I challenged myself to learn a little bit about MongoDB, so I created an API that... | 0 | 2024-06-14T16:45:18 | https://dev.to/vzldev/create-a-web-api-with-mongodb-16kn | mongodb, dotnet, api, csharp | Hello guys!
Today I challenged myself to learn a little bit about MongoDB, so I created an API that will connect to a MongoDB database.
## What is MongoDB?
MongoDB is a NOSQL database and NOSQL means "Not Only SQL". This is because MongoDB is not only a relational database. NOSQL can store unstructured data.
MongoDB is a document database. It stores data in a type of JSON format called BSON. A record in MongoDB is a document, which is a data structure composed of key value pairs similar to the structure of JSON objects.
And this documents are stored in collections (you can compare a collection like as a table in SQL Relational databases). And all this collections are stored in a database!
## MongoDB Setup
To start using MongoDB the first thing that you need is the MongoDB "engine". For that I recommend using a image container and run that image in the docker container.
After pull the image and run it, you need a way to interact with the database. I used MongoDB Compass.
## MongoDB integration
To integrate your MongoDB database with your .NET API, you'll need to install the following nuget package:
- MongoDB.Driver
I have in the Model folder a Event class that represent the document in MongoDB.
Important thing to notice here is there is specific Data Annotations to handle MongoDB data.
```
public class Event
{
[BsonId]
public Guid EventId { get; set; }
[BsonElement("title")]
public string Title { get; set; }
[BsonElement("description")]
public string Description { get; set; }
[BsonElement("location")]
public string Location { get; set; }
[BsonElement("date")]
public DateTime Date { get; set; }
[BsonElement("users")]
public List<Guid> Users { get; set; } // List of users associated with the event
}
```
The next thing you need is to establish connection to the MongoDB. In this example I create a factory class to do that.
```
public class MongoDbConnection : IMongoDbConnection
{
private readonly IConfiguration _configuration;
public MongoDbConnection(IConfiguration configuration)
{
_configuration = configuration;
}
public IMongoDatabase GetDatabase()
{
var connectionString = _configuration.GetSection("MyDb").GetValue<string>("ConnectionString");
var databaseName = _configuration.GetSection("MyDb").GetValue<string>("DatabaseName");
var url = MongoUrl.Create(connectionString);
var client = new MongoClient(url);
var database = client.GetDatabase(databaseName);
return database;
}
}
```
And on the appsettings.json file, I added the connection string:
```
"MyDb": {
"ConnectionString": "mongodb://localhost:27017",
"DatabaseName": "Eventsdb",
"EventsCollectionName": "events"
}
```
I created a repository class to interact with the database:
```
public class EventsRepository : IEventsRepository
{
private readonly IMongoDbConnection _connection;
private readonly IMongoCollection<Event> _collection;
public EventsRepository(IMongoDbConnection connection)
{
_connection = connection;
var database = _connection.GetDatabase();
_collection = database.GetCollection<Event>("events");
}
public async Task<bool> CreateEvent(Event evento)
{
try
{
await _collection.InsertOneAsync(evento);
return true;
}
catch (Exception)
{
throw;
}
}
public async Task<bool> DeleteEvent(Guid id)
{
var filterDefinition = Builders<Event>.Filter.Eq(a => a.EventId, id);
var result = await _collection.DeleteOneAsync(filterDefinition);
return result.DeletedCount > 0;
}
public async Task<List<Event>> GetAllEvents()
{
return await _collection.Find(Builders<Event>.Filter.Empty).ToListAsync();
}
public async Task<Event> GetEventById(Guid id)
{
var filterDefinition = Builders<Event>.Filter.Eq(a => a.EventId, id);
return await _collection.Find(filterDefinition).FirstAsync();
}
public async Task<bool> UpdateEvent(Event evento)
{
var filterDefinition = Builders<Event>.Filter.Eq(a => a.EventId, evento.EventId);
var result = await _collection.ReplaceOneAsync(filterDefinition, evento);
return result.ModifiedCount > 0;
}
}
```
And that's it guys, a simple use case of using a api with mongodb. I hope you liked it, stay tuned for more! | vzldev |
1,888,870 | Web: Your Accessibility FAQ Guide | Ensuring that your website is accessible to all users, including those with disabilities, is not only... | 0 | 2024-06-14T18:15:08 | https://accessmeter.com/faqs/web-accessibility-faq/ | faqs, a11y, webaccessibility | ---
title: Web: Your Accessibility FAQ Guide
published: true
date: 2024-06-14 16:44:06 UTC
tags: FAQs,accessibility,faqs,webaccessibility
canonical_url: https://accessmeter.com/faqs/web-accessibility-faq/
---
Ensuring that your website is accessible to all users, including those with disabilities, is not only a legal obligation but also a way to enhance user experience and expand your audience. This FAQ session aims to address some of the most common questions and provide practical advice on making your website more accessible. While the […]
The post [Web: Your Accessibility FAQ Guide](https://accessmeter.com/faqs/web-accessibility-faq/) appeared first on [Accessmeter LLC](https://accessmeter.com). | samuel_enyi_0f46ef94a1918 |
1,888,823 | Version Control Best Practices with Git and GitHub | Introduction: Efficient version control is the backbone of successful software... | 0 | 2024-06-14T16:43:33 | https://dev.to/haseebmirza/version-control-best-practices-with-git-and-github-364h | github, versioncontrol, git, tip | ## Introduction:
Efficient version control is the backbone of successful software development. Git and GitHub offer powerful tools for managing your codebase and collaborating with your team. In this article, we'll explore best practices to help you master these essential tools.
## 1. Understanding Version Control:
Version control systems (VCS) like Git track changes, allowing multiple developers to work on the same project without conflicts. GitHub enhances these capabilities with a user-friendly web interface and collaboration features.
## 2. Setting Up Your Repository:
Start by initializing a new repository with git init or cloning an existing one using git clone [URL]. Configure Git with your username and email using git config.
## 3. Branching Strategy:
Adopt a branching strategy to manage your code effectively:
Main Branch: Keep the main branch stable and deployable.
Feature Branches: Create separate branches for new features (git checkout -b feature-branch).
Release Branches: Use these for final preparations and bug fixes before deployment.
## 4. Commit Messages:
Write clear and descriptive commit messages. Use the imperative mood for a concise description. Example: git commit -m "Add user authentication feature"
## 5. Pull Requests and Code Reviews:
Use pull requests for peer reviews before merging changes. This ensures code quality and catches potential issues early.
## 6. Handling Merge Conflicts:
Merge conflicts can occur when multiple changes overlap. Resolve conflicts manually and commit the resolved files. Use git merge to integrate changes.
## 7. Continuous Integration/Continuous Deployment (CI/CD):
Automate testing and deployment with CI/CD tools like GitHub Actions. This ensures code quality and streamlines the release process.
## 8. Backup and Recovery:
Regularly back up your repositories to avoid data loss. Use GitHub's built-in backup features and third-party services.
## Conclusion:
Mastering Git and GitHub best practices is essential for efficient, collaborative, and high-quality development. By following these guidelines, you can improve your workflow and achieve greater project success.
Ready to take your version control skills to the next level? Implement these best practices and watch your development process transform. Share your experiences and tips in the comments below! #Git #GitHub #VersionControl #WebDevelopment #Programming
| haseebmirza |
1,888,822 | Oracle Transportation Management Cloud Testing: The Comprehensive Guide | Businesses that ship, move, send, or receive goods on a regular basis require real-time tracking of... | 0 | 2024-06-14T16:41:56 | https://www.opkey.com/blog/oracle-transportation-management-cloud-testing-the-comprehensive-guide | cloud, testing | 
Businesses that ship, move, send, or receive goods on a regular basis require real-time tracking of their shipments. For this, they invest heavily in transport management solutions. One such solution is Oracle Transportation Management (OTM) Cloud. The broad and deep visibility offered by Oracle Transportation Management Cloud ensures efficient transportation planning and execution.
**Oracle Transportation Management**
Oracle rolls out quarterly updates to maximize customers’ return on investment. In this blog, we’ll discuss what Oracle transportation management quarterly updates are and why they are essential to maximize your ROI. We’ll also highlight why Oracle quarterly updates require continuous testing and how Opkey’s No-Code test automation can help you with Oracle OTM Update Testing.
**What are Oracle Fusion Cloud Transportation Quarterly Updates**?
Oracle uses quarterly updates to deliver new features and functionalities for your Fusion Cloud Oracle Transportation Management Application. Quarterly updates also include resolutions for issues that have occurred since the last update. Some of the key features include:
- Bug fixes, security alerts, and data fixes
- New tax, legal, and regulatory updates
- Certification with new third-party products and versions
- Certification with new Oracle products
**Why is Testing Critical for the Oracle Transportation Management (Fusion Cloud) System**?
OTM receives new features and enhancements with each quarterly release. Since Oracle Transportation Management System (Fusion) has been configured for your unique business requirements, there’s a possibility that quarterly updates can negatively impact custom configurations.
Oracle OTM Testing validates that quarterly updates haven’t impacted your current configurations nor changed your security roles. Simply put, testing makes sure that the quarterly updates didn’t cause any unexpected behavior in your unique configuration.
**Areas to Include in Your Oracle Transportation Management System Test Plan**
- Integration tests confirming APIs (such as XML, REST).
- Third party external systems (such as rating, distance and service time engines).
- Key business process flows for various roles in your organization.
- Critical custom reports.
- UI tests covering users’ day-to-day activities and screens that trigger agent actions.
- Custom workflows including saved queries and direct SQL updates.
- Automatically available UI.
- New enhancements that will apply to you.
**Challenges in Testing Fusion Cloud Oracle Transportation Management System**
In most cases, system administrators are responsible for quarterly updates testing. As business users are already occupied with their routine tasks, they find it really difficult to test Oracle transportation management systems.
**Here’s why**:
**Frequency of Updates**
- Oracle rolls out quarterly updates for its Fusion Transportation Management system.
- Each update requires at least 2 rounds of testing - one in a non-production (test environment) and another in the production environment.
- Manual testing 8X per year can be very time consuming and challenging for business users.
**What to Test**
- Finding the right set of regression suites that deliver adequate risk coverage is a challenging task.
- Testers often select regression tests based on their personal experience and understanding.
- Testing too much consumes too much time and doesn’t guarantee adequate coverage. Testing too little can save time, but it can also expose your business to risks.
**Challenges with Test Automation**
If you bring in a code-based test automation platform, it can be challenging for business users to operate it since they’re non-technical folks.
Oracle’s transportation management application has a highly dynamic nature. Incorporating test automation can be of limited help if automation scripts break and require manual maintenance effort.
**Navigating Oracle Transportation Management Cloud (Fusion) Testing Challenges with Opkey’s No-Code Test Automation**
Opkey is the industry's leading Oracle OTM testing tool. By automating Fusion Cloud quarterly update testing, Opkey offers cost and time benefits to Oracle Fusion customers.
**Test Guidance from Opkey**
Before each update is applied to customers’ environments, Opkey runs a comprehensive series of automated tests to validate the features being released against your environment.
These tests validate:
- The health of the builds in a simulated existing customer environment.
- Successful execution of tests in a simulated new customer environment.
- End-to-end business process flows.
- Primary use-case scenarios.
- Alternate use-case scenarios.
- Oracle Cloud’s security tests.
- Reports and integration tests.
- Additional scenarios derived from design specifications.
| johnste39558689 |
1,888,821 | The Future of Healthcare: AI and Automation | Accelerating Medical Discoveries AI's potential to accelerate medical discoveries is... | 27,673 | 2024-06-14T16:40:24 | https://dev.to/rapidinnovation/the-future-of-healthcare-ai-and-automation-42jk | ## Accelerating Medical Discoveries
AI's potential to accelerate medical discoveries is groundbreaking. AI systems
can analyze massive datasets from medical records, genetic information, and
scientific studies at unprecedented speeds. This can lead to new treatments,
disease predictors, and precision medicine approaches tailored to each
individual's unique genetic makeup.
## Automating Administrative Tasks
Administrative tasks like billing, insurance claims processing, scheduling,
and data entry can be time-consuming and error-prone. AI-powered chatbots and
virtual assistants are invaluable in automating these functions, freeing up
healthcare professionals to focus on higher-level responsibilities that
require human expertise and empathy.
## Augmenting Medical Imaging
AI algorithms can analyze medical images such as CT scans, MRIs, and X-rays
with a level of accuracy and speed that surpasses human capabilities. This
revolutionizes the early detection of medical conditions, leading to earlier
interventions and more effective treatments.
## Monitoring Patients Remotely
Remote patient monitoring, facilitated by AI and IoT, allows continuous
monitoring of vital signs and symptoms between office visits. AI can analyze
this data in real-time, detecting concerning patterns or anomalies and
alerting healthcare providers for timely intervention and preventative care.
## Ethical Considerations and Responsible Development
While AI in healthcare holds immense promise, it also raises ethical
considerations. Privacy and data security must be paramount. Ensuring AI
systems are transparent, unbiased, and accountable is essential to maintaining
patient trust and safety.
## The Collaborative Future
The future of healthcare is undeniably high-tech but also promises to be more
humane. AI, when developed and implemented responsibly, has the potential to
accelerate medical discoveries, streamline administrative tasks, enhance
diagnostic accuracy, and improve patient outcomes. Collaboration between
technology innovators, healthcare providers, regulatory bodies, and patients
will be crucial in harnessing the full potential of AI to upgrade humanity's
well-being.
At Rapid Innovation, we are excited to collaborate with healthcare innovators
to build the technological infrastructure that will shape the future of
medicine. Together, we can usher in a new era of healthcare that leverages AI
to make healthcare more efficient, personalized, and accessible, ultimately
benefiting patients and healthcare professionals alike. The computer will see
you now, but it will also empower you to lead a healthier and happier life.
Drive innovation with intelligent AI and secure blockchain technology! 🌟 Check
out how we can help your business grow!
[Blockchain App Development](https://www.rapidinnovation.io/service-
development/blockchain-app-development-company-in-usa)
[Blockchain App Development](https://www.rapidinnovation.io/service-
development/blockchain-app-development-company-in-usa)
[AI Software Development](https://www.rapidinnovation.io/ai-software-
development-company-in-usa)
[AI Software Development](https://www.rapidinnovation.io/ai-software-
development-company-in-usa)
## URLs
* <http://www.rapidinnovation.io/post/ais-watchful-eye-healthcares-transformation-through-automation>
## Hashtags
#FutureOfHealthcare
#AIinMedicine
#PersonalizedHealthcare
#MedicalInnovation
#HealthcareAutomation
| rapidinnovation | |
1,888,800 | CVPR Pre-Show: Open3DSG: an Open-Vocabulary 3D Scene Graph Generation Method | With CVPR 2024 coming soon, check out this conversation between Harpreet Sahota (Hacker-in-Residence... | 0 | 2024-06-14T16:39:20 | https://dev.to/voxel51/unpublished-video-586k-4c4 | computervision, ai, machinelearning, datascience | With [CVPR 2024](https://cvpr.thecvf.com/) coming soon, check out this conversation between [Harpreet Sahota](https://www.linkedin.com/in/harpreetsahota204/) (Hacker-in-Residence at Voxel51) and Dr. [Jason Corso](https://www.linkedin.com/in/jason-corso/) (Prof of Robotics at the University of Michigan) with [Sebastian Koch](https://www.linkedin.com/in/sebastiankoch98/), PhD Student - Bosch Research.
Discussed is Sebastian's work, [Open3DSG, an open-vocabulary 3D scene graph generation method that predicts scene graphs from point clouds](https://arxiv.org/html/2402.12259v2). | jguerrero-voxel51 |
1,888,820 | Get $100 off Temu Coupon Code [acp856709] 30% off | You can get a $100 off Temu coupon code using the code {acp856709}. This Temu $100 Off code is... | 0 | 2024-06-14T16:38:51 | https://dev.to/subhamshooter/get-100-off-temu-coupon-code-acp856709-30-off-995 | beginners | You can get a $100 off Temu coupon code using the code {acp856709}. This Temu $100 Off code is specifically for new customers and can be redeemed to receive a $100 discount on your purchase.
Redeeming the coupon code (acp856709) is simple and hassle-free. Follow these steps to enjoy your $50 discount:
Visit Temu's Website: Go to the Temu website and browse through their extensive selection of products.
Add Items to Your Cart: Select the items you wish to purchase and add them to your shopping cart.
Apply Code: Use our code acp856709 on check box
Make payment and be happy.
| subhamshooter |
1,888,819 | Hire an excellent hacker to recover your money | I sent $130,000 to trade crypto assets on the website coinbitjzsc.top but when I tried to withdraw... | 0 | 2024-06-14T16:38:38 | https://dev.to/judy_leone_ac22c11b532d09/hire-an-excellent-hacker-to-recover-your-money-3j6l | I sent $130,000 to trade crypto assets on the website coinbitjzsc.top but when I tried to withdraw funds, I was told my account had been frozen because of “suspicious activity”. I provided proof of identification and proof that my funds had been transferred from their crypto asset account. The site then told me the account was marked with a “danger signal”, and that I needed to pay a “risk deposit” of nearly $40,000. I was not able to withdraw any of the money from their account until I read about **Recoverycoingroup At Gmail Dot Com**, after I contacted them and did all I was asked to do, in less than 72hours I received my money back into my wallet. I strongly recommend Recovery Coin Group for anyone in similar situations. | judy_leone_ac22c11b532d09 | |
1,888,818 | Part 7: Connecting to a Database with Node.js | In the previous part of our Node.js series, we introduced Express.js, a powerful web application... | 0 | 2024-06-14T16:36:42 | https://dev.to/dipakahirav/part-7-connecting-to-a-database-with-nodejs-4be1 | node, mongodb, database | In the previous part of our Node.js series, we introduced Express.js, a powerful web application framework that simplifies server-side development. Now, let's take a significant step forward by integrating a database into our application. Databases are crucial for storing and retrieving persistent data. In this part, we'll explore how to connect to both SQL and NoSQL databases using Node.js.
please subscribe to my [YouTube channel](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
) to support my channel and get more web development tutorials.
#### Overview of Databases
There are two primary types of databases commonly used with Node.js:
1. **SQL Databases**: These include relational databases like MySQL, PostgreSQL, and SQLite. They use structured query language (SQL) for defining and manipulating data.
2. **NoSQL Databases**: These include document-oriented databases like MongoDB. They provide flexible schemas and scale horizontally.
We'll cover examples of connecting to both a SQL and a NoSQL database.
#### Connecting to a SQL Database (MySQL)
**Step 1: Install MySQL and Node.js Packages**
First, ensure you have MySQL installed on your system. You can download it from the [official MySQL website](https://dev.mysql.com/downloads/mysql/).
Next, install the `mysql2` package in your Node.js project:
```bash
npm install mysql2
```
**Step 2: Create a MySQL Database and Table**
Log in to your MySQL server and create a new database and table for demonstration purposes:
```sql
CREATE DATABASE nodejs_demo;
USE nodejs_demo;
CREATE TABLE users (
id INT AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(255) NOT NULL,
email VARCHAR(255) NOT NULL UNIQUE
);
```
**Step 3: Connect to MySQL from Node.js**
Create a file named `database.js` and add the following code to connect to your MySQL database:
**database.js**
```javascript
const mysql = require('mysql2');
const connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: 'your_password',
database: 'nodejs_demo'
});
connection.connect(err => {
if (err) {
console.error('Error connecting to MySQL:', err.stack);
return;
}
console.log('Connected to MySQL as ID', connection.threadId);
});
module.exports = connection;
```
**Step 4: Interacting with the Database**
Now, let’s add some code to interact with the database. Create a file named `app.js` and use the following code to insert and retrieve data:
**app.js**
```javascript
const express = require('express');
const connection = require('./database');
const app = express();
app.use(express.json());
// Insert a new user
app.post('/users', (req, res) => {
const { name, email } = req.body;
connection.query('INSERT INTO users (name, email) VALUES (?, ?)', [name, email], (err, results) => {
if (err) {
return res.status(500).send(err);
}
res.status(201).send({ id: results.insertId, name, email });
});
});
// Get all users
app.get('/users', (req, res) => {
connection.query('SELECT * FROM users', (err, results) => {
if (err) {
return res.status(500).send(err);
}
res.send(results);
});
});
const PORT = 3000;
app.listen(PORT, () => {
console.log(`Server running at http://localhost:${PORT}/`);
});
```
#### Connecting to a NoSQL Database (MongoDB)
**Step 1: Install MongoDB and Node.js Packages**
Ensure MongoDB is installed on your system. You can download it from the [official MongoDB website](https://www.mongodb.com/try/download/community).
Next, install the `mongoose` package in your Node.js project:
```bash
npm install mongoose
```
**Step 2: Connect to MongoDB from Node.js**
Create a file named `database.js` and add the following code to connect to your MongoDB database:
**database.js**
```javascript
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/nodejs_demo', {
useNewUrlParser: true,
useUnifiedTopology: true
});
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', () => {
console.log('Connected to MongoDB');
});
module.exports = mongoose;
```
**Step 3: Define a Mongoose Schema and Model**
Create a file named `userModel.js` and define a schema and model for users:
**userModel.js**
```javascript
const mongoose = require('mongoose');
const userSchema = new mongoose.Schema({
name: String,
email: { type: String, unique: true }
});
const User = mongoose.model('User', userSchema);
module.exports = User;
```
**Step 4: Interacting with the Database**
Use the following code in `app.js` to insert and retrieve data from MongoDB:
**app.js**
```javascript
const express = require('express');
const mongoose = require('./database');
const User = require('./userModel');
const app = express();
app.use(express.json());
// Insert a new user
app.post('/users', async (req, res) => {
try {
const user = new User(req.body);
await user.save();
res.status(201).send(user);
} catch (err) {
res.status(400).send(err);
}
});
// Get all users
app.get('/users', async (req, res) => {
try {
const users = await User.find();
res.send(users);
} catch (err) {
res.status(500).send(err);
}
});
const PORT = 3000;
app.listen(PORT, () => {
console.log(`Server running at http://localhost:${PORT}/`);
});
```
#### Conclusion
Integrating databases with your Node.js applications allows you to manage and persist data efficiently. Whether using SQL databases like MySQL or NoSQL databases like MongoDB, Node.js provides powerful tools and libraries to facilitate database operations. In the next part of our series, we’ll explore authentication and authorization, essential for securing your applications.
Stay tuned for more advanced Node.js development techniques!
Feel free to leave your comments or questions below. If you found this guide helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
### Follow and Subscribe:
- **Website**: [Dipak Ahirav] (https://www.dipakahirav.com)
- **Email**: dipaksahirav@gmail.com
- **Instagram**: [devdivewithdipak](https://www.instagram.com/devdivewithdipak)
- **YouTube**: [devDive with Dipak](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
)
- **LinkedIn**: [Dipak Ahirav](https://www.linkedin.com/in/dipak-ahirav-606bba128) | dipakahirav |
1,888,817 | Day 8: Angular Signals and Infinite Scrolling | In today's blog post, we will explore the concepts of Angular Signals and Infinite Scrolling. These... | 0 | 2024-06-14T16:33:17 | https://dev.to/dipakahirav/day-8-angular-signals-and-infinite-scrolling-5e4f | angular, javascript, programming, webdev | In today's blog post, we will explore the concepts of Angular Signals and Infinite Scrolling. These two topics are crucial for building scalable and efficient Angular applications.
please subscribe to my [YouTube channel](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
) to support my channel and get more web development tutorials.
#### Angular Signals
Angular Signals are a reactive primitive that represents a value and allows controlled changes and tracking of those changes over time. Signals are not a new concept exclusive to Angular; they have been around for years in other frameworks, sometimes under different names.
Here is an example of how to use Angular Signals:
```typescript
// signal.service.ts
import { Injectable } from '@angular/core';
import { Signal } from 'angular-signals';
@Injectable()
export class SignalService {
private signal = new Signal(0);
getSignal() {
return this.signal;
}
updateSignal(value: number) {
this.signal.next(value);
}
}
```
In this example, we create a `SignalService` that holds a `Signal` object. The `getSignal` method returns the current value of the signal, and the `updateSignal` method updates the signal with a new value.
#### Infinite Scrolling
Infinite scrolling is a technique used to load more data as the user scrolls down a list. This technique is commonly used in applications where the data is too large to be loaded all at once.
Here is an example of how to implement infinite scrolling in Angular:
```typescript
// infinite-scroll.component.ts
import { Component } from '@angular/core';
import { Signal } from 'angular-signals';
@Component({
selector: 'app-infinite-scroll',
template: `
<div *ngFor="let item of items">
{{ item }}
</div>
<button (click)="loadMore()">Load More</button>
`
})
export class InfiniteScrollComponent {
items = [];
signal = new Signal(0);
constructor(private signalService: SignalService) {}
loadMore() {
this.signal.next(this.signal.value + 30);
}
}
```
In this example, we create an `InfiniteScrollComponent` that holds a list of items and a signal. The `loadMore` method updates the signal with a new value, which triggers the loading of more data.
### Conclusion
In this blog post, we have explored the concepts of Angular Signals and Infinite Scrolling. These two topics are crucial for building scalable and efficient Angular applications. By understanding how to use Angular Signals and implement infinite scrolling, you can create robust and maintainable applications that provide a seamless user experience.
In the next blog post, we will delve into the topic of State Management in Angular, covering services, RxJS, and NgRx.
Feel free to leave your comments or questions below. If you found this guide helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
### Follow and Subscribe:
- **Website**: [Dipak Ahirav] (https://www.dipakahirav.com)
- **Email**: dipaksahirav@gmail.com
- **Instagram**: [devdivewithdipak](https://www.instagram.com/devdivewithdipak)
- **YouTube**: [devDive with Dipak](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
)
- **LinkedIn**: [Dipak Ahirav](https://www.linkedin.com/in/dipak-ahirav-606bba128) | dipakahirav |
1,888,816 | 3d rotating octahedron | Check out this Pen I made! | 0 | 2024-06-14T16:31:46 | https://dev.to/kemiowoyele1/3d-rotating-octahedron-hfd | codepen | Check out this Pen I made!
{% codepen https://codepen.io/frontend-magic/pen/eYaeqdd %} | kemiowoyele1 |
1,888,808 | What's your keyboard layout? | This question comes up every now and then but it's always fun to see the different custom layouts... | 0 | 2024-06-14T16:31:41 | https://dev.to/jess/whats-your-keyboard-layout-bmb | discuss, watercooler | This question comes up every now and then but it's always fun to see the different custom layouts people use!
My friend Chris has been building out their new keyboard and shared this WIP pic with me:
Full layout shared [here](https://github.com/chelming/zmk-config/blob/main/images/keymap.svg).
I think it's **PRETTY WILD** that they'll be pressing two keys at once to access some basic letters from the alphabet. 🤯
Outside of dvorak to help with carpal tunnel, I've never really considered straying out of QWERTY. I've always wanted to get smarter/more efficient with my layering use, but also never got around to doing that. I have a pretty underutilized ErgoDox, but the split keyboard has immensely helped me with my previous pains so a win no matter what!
Anyway, would love to see other layouts if anyone feels like sharing! | jess |
1,888,815 | Join us for the Twilio Challenge: $5,000 in Prizes! | The DEV Community is hosting the Twilio Challenge, offering a prize pool of $5,000. The challenge is... | 0 | 2024-06-14T16:29:29 | https://dev.to/subhamshooter/join-us-for-the-twilio-challenge-5000-in-prizes-4bco | javascript, beginners, programming, tutorial | The DEV Community is hosting the Twilio Challenge, offering a prize pool of $5,000. The challenge is officially live, and submissions are due on June 23. This is a collaborative effort between DEV and Twilio, providing an opportunity for participants to experience the capabilities of Twilio while competing for a significant prize. | subhamshooter |
1,888,674 | Discovering JavaScript's Hidden Secrets: Understanding Trees as a Non Linear Data Structure. | Welcome back to another section on non-linear data structures. In this episode, we'll explore trees... | 26,378 | 2024-06-14T16:28:05 | https://dev.to/davidevlops/discovering-javascripts-hidden-secrets-understanding-trees-as-a-non-linear-data-structure-n48 | javascript, programming, datastructures, algorithms | Welcome back to another section on non-linear data structures. In this episode, we'll explore trees as a type of non-linear data structure. Our focus will be on understanding the fundamental concepts and operations associated with trees.
We'll embark on an exploration of trees, a foundational non-linear data structure widely utilized in computer science. Trees serve as a fundamental data structure, adept at representing hierarchical relationships between entities. Join us as we examine the concepts, properties, and operations that define trees.
- **Trees:** A tree, as the name suggests, is a top-down structure consisting of nodes connected by edges. Trees are hierarchical structures that represent a collection of elements, where each element is connected to one or more elements in a parent-child relationship. Trees are used to model various kinds of data, including file systems, databases, and organizational structures. To understand trees as a data structure, there are some basic terminologies you need to know, which we will be exploring.
#### Terminologies Used In Tree Data Structure
- **Node:** Node is the basic unit of a tree, which contains data. Each node can have zero or more child nodes.
- **Edge:** An edge is a connection between two nodes, representing the parent-child relationship.
- **Root:** A root refers to the topmost node of a tree, from which all nodes descend. There is only one root in a tree.
- **Parent:** Parent refers to a node that has one or more child nodes.
- **Child:** A child is a node that descends from another node (its parent).
- **Leaf (or External Node):** A leaf refers to a node that does not have any children. It is the end of a path in the tree.
- **Internal Node:** An internal node is a node that has at least one child.
- **Subtree:** A subtree is a portion of a tree that includes a node and all its descendants.
A picture of a tree data structure is shown below
When discussing trees, it's important to note that there are different types of trees, including Binary Trees, Binary Search Trees (BST), Balanced Trees, Heaps, B-trees, and Tries. Let's discuss them in detail.
- **Binary Tree:** A binary node has at most two children (left and right).
- **Binary Search Tree (BST):** A binary search tree is a binary tree with the additional property that the left child is less than the parent node and the right child is greater.
- **Balanced Trees:** A balanced tree is a tree that maintains a balanced structure to ensure efficient operations, like AVL trees and Red-Black trees.
- **Heaps:** These are complete binary trees used to implement priority queues, with properties like the min-heap or max-heap.
- **B-trees:** B-trees are generalizations of binary search trees used in databases and filesystems, designed to work well on storage systems.
- **Tries:** Tries trees are used to store dynamic sets of strings, useful for tasks like autocomplete and spell checking.
An implementation of a tree data structure with various operations is illustrated below.
```js
class Node {
constructor(value) {
this.value = value;
this.left = null;
this.right = null;
}
}
class BinaryTree {
constructor() {
this.root = null;
}
// Insertion in a Binary Search Tree (BST)
insert(value) {
const newNode = new Node(value);
if (this.root === null) {
this.root = newNode;
} else {
this.insertNode(this.root, newNode);
}
}
insertNode(node, newNode) {
if (newNode.value < node.value) {
if (node.left === null) {
node.left = newNode;
} else {
this.insertNode(node.left, newNode);
}
} else {
if (node.right === null) {
node.right = newNode;
} else {
this.insertNode(node.right, newNode);
}
}
}
// In-order Traversal
inOrderTraversal(node = this.root) {
if (node !== null) {
this.inOrderTraversal(node.left);
console.log(node.value);
this.inOrderTraversal(node.right);
}
}
// Pre-order Traversal
preOrderTraversal(node = this.root) {
if (node !== null) {
console.log(node.value);
this.preOrderTraversal(node.left);
this.preOrderTraversal(node.right);
}
}
// Post-order Traversal
postOrderTraversal(node = this.root) {
if (node !== null) {
this.postOrderTraversal(node.left);
this.postOrderTraversal(node.right);
console.log(node.value);
}
}
// Level-order Traversal
levelOrderTraversal() {
const queue = [];
if (this.root !== null) {
queue.push(this.root);
}
while (queue.length > 0) {
let node = queue.shift();
console.log(node.value);
if (node.left !== null) {
queue.push(node.left);
}
if (node.right !== null) {
queue.push(node.right);
}
}
}
// Search in a Binary Search Tree (BST)
search(value) {
return this.searchNode(this.root, value);
}
searchNode(node, value) {
if (node === null) {
return false;
}
if (value < node.value) {
return this.searchNode(node.left, value);
} else if (value > node.value) {
return this.searchNode(node.right, value);
} else {
return true;
}
}
}
// Example Usage
const tree = new BinaryTree();
tree.insert(10);
tree.insert(5);
tree.insert(15);
tree.insert(3);
tree.insert(7);
tree.insert(13);
tree.insert(17);
console.log("In-order Traversal:");
tree.inOrderTraversal(); // 3, 5, 7, 10, 13, 15, 17
console.log("Pre-order Traversal:");
tree.preOrderTraversal(); // 10, 5, 3, 7, 15, 13, 17
console.log("Post-order Traversal:");
tree.postOrderTraversal(); // 3, 7, 5, 13, 17, 15, 10
console.log("Level-order Traversal:");
tree.levelOrderTraversal(); // 10, 5, 15, 3, 7, 13, 17
console.log("Search for 7:");
console.log(tree.search(7)); // true
console.log("Search for 8:");
console.log(tree.search(8)); // false
```
### Conclusion
In this episode, we have extensively discussed trees as a type of non-linear data structure in JavaScript. We implemented a detailed example demonstrating how to create and manipulate trees, covering various operations. This brings us to the end of our discussion on data structures. In the next episode, we'll discuss some common algorithms.
### Resources and References
You can check out some of the resources listed below to learn more about trees as a non-linear data structure:
- [Introduction to Tree Data Structure](https://www.geeksforgeeks.org/introduction-to-tree-data-structure/)
- [Tree Data Structure](https://www.tutorialspoint.com/data_structures_algorithms/tree_data_structure.htm)
- [Tree Data Structure](https://www.programiz.com/dsa/trees)
- [Tree (data structure)](<https://en.wikipedia.org/wiki/Tree_(data_structure)>) | davidevlops |
1,888,760 | CVPR Pre-Show: Improved Visual Grounding through Self-Consistent Explanations | With CVPR 2024 coming soon, check out this conversation between Harpreet Sahota (Hacker-in-Residence... | 0 | 2024-06-14T16:27:54 | https://dev.to/voxel51/cvpr-pre-show-improved-visual-grounding-through-self-consistent-explanations-23bn | With [CVPR 2024](https://cvpr.thecvf.com/) coming soon, check out this conversation between [Harpreet Sahota](https://www.linkedin.com/in/harpreetsahota204/) (Hacker-in-Residence at Voxel51) and Dr. [Jason Corso](https://www.linkedin.com/in/jason-corso/) (Prof of Robotics at the University of Michigan) with Dr. [Paola Cascante-Bonilla](https://www.linkedin.com/in/paola-cascante/) and [Ruozhen He](https://www.linkedin.com/in/ruozhen-catherine-he-906666236/) about their paper "[Improved Visual Grounding through Self-Consistent Explanations](https://arxiv.org/abs/2312.04554)." | jguerrero-voxel51 | |
1,888,812 | Day 5: Understanding Functions in JavaScript | Introduction Welcome to Day 5 of your JavaScript journey! Yesterday, we explored control... | 0 | 2024-06-14T16:26:52 | https://dev.to/dipakahirav/day-5-understanding-functions-in-javascript-55ji | javascript, webdev, programming, learning | #### Introduction
Welcome to Day 5 of your JavaScript journey! Yesterday, we explored control structures, learning how to make decisions and repeat actions in our code. Today, we'll dive into functions, which are essential for organizing and reusing code in JavaScript.
please subscribe to my [YouTube channel](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
) to support my channel and get more web development tutorials.
#### Functions
Functions are blocks of code designed to perform a particular task. They help to make your code more modular, reusable, and easier to read.
**1. Function Declaration**
A function declaration defines a function with the specified parameters.
**Syntax:**
```javascript
function functionName(parameters) {
// code to be executed
}
```
**Example:**
```javascript
function greet(name) {
console.log("Hello, " + name + "!");
}
greet("Alice"); // Output: Hello, Alice!
greet("Bob"); // Output: Hello, Bob!
```
**2. Function Expression**
A function expression defines a function as part of an expression. It can be anonymous or named.
**Syntax:**
```javascript
const functionName = function(parameters) {
// code to be executed
};
```
**Example:**
```javascript
const greet = function(name) {
console.log("Hello, " + name + "!");
};
greet("Charlie"); // Output: Hello, Charlie!
```
**3. Arrow Functions**
Arrow functions provide a shorter syntax for writing functions. They are anonymous and cannot be used as constructors.
**Syntax:**
```javascript
const functionName = (parameters) => {
// code to be executed
};
```
**Example:**
```javascript
const greet = (name) => {
console.log("Hello, " + name + "!");
};
greet("Dave"); // Output: Hello, Dave!
```
#### Parameters and Arguments
Functions can accept parameters, which are placeholders for the values you pass to the function (arguments).
**Example:**
```javascript
function add(a, b) {
return a + b;
}
let sum = add(5, 3);
console.log(sum); // Output: 8
```
#### Return Statement
The `return` statement specifies the value to be returned by the function.
**Example:**
```javascript
function multiply(a, b) {
return a * b;
}
let product = multiply(4, 7);
console.log(product); // Output: 28
```
#### Function Scope
Variables declared inside a function are local to that function and cannot be accessed outside it.
**Example:**
```javascript
function scopeTest() {
let localVar = "I am local";
console.log(localVar); // Output: I am local
}
scopeTest();
// console.log(localVar); // Error: localVar is not defined
```
#### Practical Examples
**Example 1: Function to calculate the area of a rectangle**
```javascript
function calculateArea(width, height) {
return width * height;
}
let area = calculateArea(5, 10);
console.log("Area:", area); // Output: Area: 50
```
**Example 2: Function to find the maximum of two numbers**
```javascript
function findMax(a, b) {
if (a > b) {
return a;
} else {
return b;
}
}
let max = findMax(8, 12);
console.log("Max:", max); // Output: Max: 12
```
**Example 3: Arrow function to check if a number is even**
```javascript
const isEven = (number) => {
return number % 2 === 0;
};
console.log(isEven(4)); // Output: true
console.log(isEven(7)); // Output: false
```
#### Practice Activities
**1. Practice Code:**
- Write functions using function declarations, function expressions, and arrow functions.
- Create functions with parameters and return values.
**2. Mini Project:**
- Create a simple script that takes a number from the user and uses a function to determine if the number is prime.
**Example:**
```javascript
function isPrime(number) {
if (number <= 1) {
return false;
}
for (let i = 2; i < number; i++) {
if (number % i === 0) {
return false;
}
}
return true;
}
let num = parseInt(prompt("Enter a number:"));
if (isPrime(num)) {
console.log(num + " is a prime number.");
} else {
console.log(num + " is not a prime number.");
}
// If the user enters 5, the output will be:
// 5 is a prime number.
```
#### Summary
Today, we explored functions in JavaScript. We learned about function declarations, function expressions, and arrow functions. We also covered parameters, arguments, return statements, and function scope. Understanding functions is crucial for creating modular and reusable code.
Stay tuned for Day 6, where we'll dive into arrays and their methods in JavaScript!
Feel free to leave your comments or questions below. If you found this guide helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
### Follow and Subscribe:
- **Website**: [Dipak Ahirav] (https://www.dipakahirav.com)
- **Email**: dipaksahirav@gmail.com
- **Instagram**: [devdivewithdipak](https://www.instagram.com/devdivewithdipak)
- **YouTube**: [devDive with Dipak](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
)
- **LinkedIn**: [Dipak Ahirav](https://www.linkedin.com/in/dipak-ahirav-606bba128) | dipakahirav |
1,851,553 | What is JSON ( Javascript Object Notation ) and how to use it | It's pretty common for newcomers in coding to struggle with many acronyms around their first weeks,... | 0 | 2024-06-14T16:26:34 | https://dev.to/henriqueleme/what-is-json-javacript-object-notation-and-how-to-use-it-2mhk | beginners, json, learning, programming | It's pretty common for newcomers in coding to struggle with many **acronyms** around their first weeks, today we'll talk about one that is very common to use in our profession, it's also really easy to understand trust me! In this article we'll talk about what does the JSON acronym mean, how can be used, what it looks like and much more! Allow me to introduce it
## Table of contents
- [Table of contents](#table-of-contents)
- [What is JSON anyway ? ](#what-is-json-anyway-)
- [Wasn't there a way of data-transport like this before?](#wasnt-there-a-way-of-data-transport-like-this-before)
- [What's the difference between JSON and XML ?](#whats-the-difference-between-json-and-xml-)
- [Is it still worth giving a try to XML?](#is-it-still-worth-giving-a-try-to-xml)
- [Advantages of JSON ](#advantages-of-json)
* [JSON Syntax](#json-syntax)
* [JSON Data Types](#json-data-types)
- [Practical example with Cars](#practical-example-with-cars)
* [Working with JSON in JavaScript](#working-with-json-in-javascript)
* [Working with JSON in Python](#working-with-json-in-python)
* [Working with JSON in PHP](#working-with-json-in-php)
* [Working with JSON in Java](#working-with-json-in-java)
## What is JSON anyway ?
The **JSON** or "JavaScript Object Notation" is simply a basic format for transporting data that was created in 2000. But when you read the name, you might ask:
> "If is a JavaScript Object Notation, then I can only use it with JavaScript, right?" - You, 2024
Not really, because since it's light and simple, it becomes easy to read by other languages and, mostly imporant, by people.
> "Well. if is a light and simple way to transport data, then I'll use it as a database" - You, 2024
I wouldn't recommend it ....
Why not? Well, while JSON is great for transporting data because of its simplicity and readability, using a single JSON file as a whole database may not be the best idea. JSON files are not designed to handle large amounts of data efficiently. They lack the indexing, querying, and transactional capabilities of SQL databases like MySQL, PostgreSQL, or NoSQL databases like MongoDB and ScyllaDB. Using a single JSON file as a database can lead to performance issues, data integrity problems, and challenges in managing concurrent access to the data.
## Wasn't there a way of data-transport like this before?
Of course there were. The main language used was XML (Extensible Markup Language), which was designed to be a flexible and customizable markup language. Although is powerful and highly extensible, it can be quite verbose. Each piece of data in XML is surrounded by tags, which can increase file size and complexity, especially in larger documents or data sets.
## What's the difference between JSON and XML ?
JSON and XML are both data serialization formats. JSON is more concise, making it easier to read and faster to parse, which is well suited to the data structures of modern programming languages. XML, on the other hand, is more verbose with its use of explicit start and end tags, supporting a more complex hierarchical structure suitable for applications that require detailed metadata. While JSON is preferred for Web APIs due to its efficiency, XML is preferred in environments that require extensive document markup, such as enterprise applications.
Here is an XML example for comparison:
```xml
<bookstore>
<book>
<title>Learning XML</title>
<author>Erik T. Ray</author>
<price>29.99</price>
</book>
<book>
<title>JSON for Beginners</title>
<author>iCode Academy</author>
<price>39.95</price>
</book>
</bookstore>
```
And now we have the same example, but this time in JSON:
```json
{
"bookstore": {
"books": [
{
"title": "Learning XML",
"author": "Erik T. Ray",
"price": 29.99
},
{
"title": "JSON for Beginners",
"author": "iCode Academy",
"price": 39.95
}
]
}
}
```
## Is it still worth giving a try to XML?
Well, it depends on what your goal is, but in my opinion it's always worth taking a look on something, even if you don't intend to use it, just to get an idea of what it is and how it's used, you might come across a problem that XML can help you with, who knows.
## Advantages of JSON
So as you have seen, the main reason for using JSON is its ability to be readable, along with a few others:
- **Easy to Read**: JSON has a clear and straightforward structure.
- **Easy to Parse**: Its simple syntax makes it easy for computers to parse.
- **Compact**: JSON tends to be more lightweight, saving space and bandwidth.
- **Universal**: Widely supported by various programming languages and platforms, used by major companies like Google and Twitter.
### JSON Syntax
The JSON syntax is straightforward and without much secret, following some basic rules:
1. **Data is in name/value pairs**: Each data element in JSON is represented as a key (or name) and value pair, separated by a colon.
2. **Data is separated by commas**: Multiple key-value pairs within an object are separated by commas.
3. **Curly braces hold objects**: An object in JSON is enclosed within curly braces `{}`.
4. **Square brackets hold arrays**: An array in JSON is enclosed within square brackets `[]`.
But it is easier for you to see than to read, so here are some examples for you, along with the definition of each type
### JSON Data Types
JSON supports the following data types:
- **String**: A sequence of characters, enclosed in double quotes.
`"name": "John Doe"`
- **Number**: Numeric values, can be integers or floating-point.
`"age": 30`
- **Object**: A collection of key-value pairs, enclosed in curly braces.
`"address": { "street": "123 Main St", "city": "Anytown" }`
- **Array**: An ordered list of values, enclosed in square brackets.
`"courses": ["Math", "Science", "History"]`
- **Boolean**: True or false values.
`"isStudent": false`
- **Null**: Represents a null value.
`"middleName": null`
And no, you can't comment in a JSON :D
## Practical example with Cars
Let's say you want to keep records of cars and their details. Here's an example of how these records can be organized in JSON:
```json
{
"cars": [
{
"brand": "Toyota",
"model": "Corolla",
"year": 2020,
"features": {
"color": "Blue",
"transmission": "Automatic"
}
},
{
"brand": "Toyota",
"model": "Corolla",
"year": 2021,
"features": {
"color": "Red",
"transmission": "Automatic"
}
}
]
}
```
If you want to add more cars, you can simply add more objects to the cars array in the JSON structure.
And this can easily be done by parsing the JSON in a language of your choice and then manipulating it as you wish, here are some examples using the JSON shown earlier to give you a better idea of how to read and parse a JSON file
### Working with JSON in JavaScript
```javascript
const fs = require('fs').promises
const jsonPath = 'C:docs/example/example.json'
const readJsonFile = async () => {
// Reads the content from the JSON and ensure is read as a string
const jsonContent = await fs.readFile(jsonPath, 'utf-8')
// Converts the JSON into a javascript object
const data = JSON.parse(jsonContent)
console.log(data.cars[0])
//Output: { brand: "Toyota", model: "Corolla", year: 2020, features: { color: "Blue", transmission: "Automatic", }, }
console.log(data.cars[1])
//Output: { brand: "Toyota", model: "Corolla", year: 2021, features: { color: "Red", transmission: "Automatic", }, }
}
readJsonFile()
```
### Working with JSON in Python
```python
import json
#Reads the JSON file
with open('C:docs/example/example.json', 'r') as jsonFile:
#Parse the JSON content
jsonContent = json.load(jsonFile)
print(jsonContent['cars'][0])
#Output: {'brand': 'Toyota', 'model': 'Corolla', 'year': 2020, 'features': {'color': 'Blue', 'transmission': 'Automatic'}}
print(jsonContent['cars'][1])
#Output: {'brand': 'Toyota', 'model': 'Corolla', 'year': 2021, 'features': {'color': 'Red', 'transmission': 'Automatic'}}
```
### Working with JSON in PHP
```php
<?php
$jsonPath = 'C:docs/example/example.json';
// Reads the content from the JSON
$contents = file_get_contents($jsonPath);
// Converts the JSON content into a PHP Object
$jsonContent = json_decode($contents);
print_r($jsonContent->cars[1]);
// Output: stdClass Object
// (
// [brand] => Toyota
// [model] => Corolla
// [year] => 2021
// [features] => stdClass Object
// (
// [color] => Red
// [transmission] => Automatic
// )
//
//)
```
### Working with JSON in Java
```java
package org.example;
import org.json.JSONArray;
import org.json.JSONObject;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
public class Main {
public static void main(String[] args) throws IOException {
String jsonFilePath = "C:docs/example/example.json";
// Reads the content from the file and converts into a string
String jsonContent = Files.readString(Paths.get(jsonFilePath), StandardCharsets.UTF_8);
// Converts the string content into a JSON Object
JSONObject jsonExample = new JSONObject(jsonContent);
JSONArray cars = jsonExample.getJSONArray("cars");
System.out.println(cars.get(0));
// Output: {"features": {"transmission":"Automatic","color":"Blue"},"year":2020,"model":"Corolla","brand":"Toyota"}
System.out.println(cars.get(1));
// Output: {"features":{"transmission":"Automatic","color":"Red"},"year":2021,"model":"Corolla","brand":"Toyota"}
}
}
```
PS: The Java example uses the [json library](https://mvnrepository.com/artifact/org.json/json), if you try it make sure you have it on your dependencies.
## Conclusion
Wrapping your head around JSON might seem a bit tricky at first, but it's actually a piece of cake once you get the hang of it! We've covered what JSON is, how it's used, and why it's so useful.
From understanding its syntax to seeing it in action in different programming languages, you're now ready to dive in and start using JSON in your projects.
If you still have any doubts, feel free to ask me directly. I hope you enjoyed the article - don't forget to like it and share it with that friend who is still struggling with JSON.
Feedback on the article is welcome so I can improve in the next one. Thanks for reading, stay healthy and drink water! | henriqueleme |
1,888,810 | Exploring Recursive Nets | This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer. ... | 27,893 | 2024-06-14T16:26:24 | https://dev.to/monish3004/exploring-recursive-nets-3a9e | devchallenge, cschallenge, computerscience, beginners | *This is a submission for [DEV Computer Science Challenge v24.06.12: One Byte Explainer](https://dev.to/challenges/cs).*
## Explainer
Recursive neural networks (RvNNs) are a class of artificial neural networks where the structure is applied recursively, particularly well-suited for hierarchical or structured data. They operate on tree-like structures, making them apt for tasks involving nested or sequential data.
In RvNNs, each node in a tree represents a computational unit, and its children nodes feed into it. This recursive application allows the network to capture the compositional nature of data, making it especially effective for tasks such as natural language processing, where sentences and their components exhibit a hierarchical structure.
The recursive process typically involves combining information from child nodes using a learned function to produce a parent node's representation. This function often takes the form of a neural network itself, such as a feedforward network. The process continues until reaching the root node, whose representation can be used for tasks like classification or regression.
Training RvNNs involves backpropagation through structure (BTS), a variant of backpropagation tailored to tree structures. BTS calculates gradients in a way that respects the recursive nature of the network, allowing the model to learn from the entire structure rather than just linear sequences of data.
Recursive nets are closely related to recurrent neural networks (RNNs), but while RNNs deal with sequences in a linear manner, RvNNs handle hierarchical structures, providing a more flexible framework for complex, nested data. Notable applications include sentiment analysis, syntactic parsing, and image segmentation, where understanding the part-whole relationships is crucial.
By leveraging their recursive nature, RvNNs offer a powerful tool for modeling and understanding data with inherent hierarchical properties, capturing both local and global structures effectively. | monish3004 |
1,888,809 | Spring Data JPA nedir ? | Spring Data JPA, Spring Framework'ün bir alt projesi olan Spring Data'nın bir modülüdür ve Java... | 0 | 2024-06-14T16:25:46 | https://dev.to/mustafacam/spring-data-jpa-nedir--1lb1 | Spring Data JPA, Spring Framework'ün bir alt projesi olan Spring Data'nın bir modülüdür ve Java Persistence API (JPA) üzerine inşa edilmiştir. Amacı, JPA tabanlı veri erişim katmanlarının geliştirilmesini basitleştirmek ve hızlandırmaktır. Spring Data JPA, JPA'nın temel özelliklerini kullanarak veri erişim işlemlerini kolaylaştırır ve çeşitli ek özellikler sunar.
### Spring Data JPA'nin Temel Özellikleri
1. **Repository Abstraction**: CRUD (Create, Read, Update, Delete) ve daha karmaşık sorgular için repository arayüzleri sağlar.
2. **Query Methods**: Metod adlarına dayanarak otomatik olarak sorgular oluşturur. Örneğin, `findByLastName(String lastName)` gibi.
3. **Custom Queries**: JPQL (Java Persistence Query Language) ve native SQL kullanarak özel sorgular yazmayı destekler.
4. **Pagination ve Sorting**: Sayfalama ve sıralama işlemlerini kolayca yapmanızı sağlar.
5. **Auditing**: Oluşturma ve güncelleme zamanları, kullanıcı bilgileri gibi verilerin otomatik olarak kaydedilmesini sağlar.
6. **Transactional Support**: Veritabanı işlemlerinin bütünlüğünü sağlamak için işlemsel yönetim (transactional management) sağlar.
### Spring Data JPA Kullanarak Veritabanı İşlemleri
Aşağıda, Spring Data JPA kullanarak bir veritabanı bağlantısının nasıl kurulacağını ve veri işlemlerinin nasıl yapılacağını gösteren bir örnek bulunmaktadır.
### Maven Bağımlılıkları
```xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
```
### Uygulama Özellikleri (application.properties)
```properties
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.h2.console.enabled=true
spring.jpa.hibernate.ddl-auto=update
```
### Entity Sınıfı (Employee.java)
```java
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Employee {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
private int age;
// Getter ve Setter metodları
}
```
### Repository Arayüzü (EmployeeRepository.java)
```java
import org.springframework.data.repository.CrudRepository;
import java.util.List;
public interface EmployeeRepository extends CrudRepository<Employee, Long> {
List<Employee> findByName(String name);
}
```
### Service Sınıfı (EmployeeService.java)
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class EmployeeService {
@Autowired
private EmployeeRepository employeeRepository;
public Employee saveEmployee(Employee employee) {
return employeeRepository.save(employee);
}
public List<Employee> getEmployeesByName(String name) {
return employeeRepository.findByName(name);
}
public Iterable<Employee> getAllEmployees() {
return employeeRepository.findAll();
}
}
```
### Controller Sınıfı (EmployeeController.java)
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping("/employees")
public class EmployeeController {
@Autowired
private EmployeeService employeeService;
@PostMapping
public Employee createEmployee(@RequestBody Employee employee) {
return employeeService.saveEmployee(employee);
}
@GetMapping("/{name}")
public List<Employee> getEmployeesByName(@PathVariable String name) {
return employeeService.getEmployeesByName(name);
}
@GetMapping
public Iterable<Employee> getAllEmployees() {
return employeeService.getAllEmployees();
}
}
```
### Spring Boot Uygulaması (SpringDataJpaApplication.java)
```java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringDataJpaApplication {
public static void main(String[] args) {
SpringApplication.run(SpringDataJpaApplication.class, args);
}
}
```
### Açıklamalar
1. **Bağımlılıklar**: Spring Boot starter'ları ve H2 veritabanı bağımlılıkları tanımlanmıştır.
2. **Uygulama Özellikleri**: H2 veritabanı için bağlantı bilgileri ve diğer yapılandırmalar yapılmıştır.
3. **Entity Sınıfı**: `Employee` sınıfı, veritabanı tablosu ile eşleştirilmiştir. `@Entity` ve `@Id` anotasyonları kullanılmıştır.
4. **Repository Arayüzü**: `EmployeeRepository` arayüzü, Spring Data'nın `CrudRepository` arayüzünü genişleterek temel CRUD işlemlerini sağlar. Ayrıca, `findByName` metoduyla özel bir sorgu tanımlanmıştır.
5. **Service Sınıfı**: `EmployeeService` sınıfı, iş mantığını içerir ve `EmployeeRepository`'i kullanarak veri işlemlerini gerçekleştirir.
6. **Controller Sınıfı**: `EmployeeController` sınıfı, RESTful API uç noktalarını tanımlar.
7. **Spring Boot Uygulaması**: `SpringDataJpaApplication` sınıfı, Spring Boot uygulamasını başlatır.
### Spring Data JPA'nin Avantajları
1. **Kolay Kullanım**: Repository arayüzleri sayesinde CRUD işlemlerini hızlıca gerçekleştirme.
2. **Verimlilik**: Otomatik olarak sorgu oluşturma ve JPQL ile karmaşık sorgular yazabilme.
3. **Genişletilebilirlik**: Özelleştirilmiş repository arayüzleri ve metotlar tanımlayabilme.
4. **Entegrasyon**: Spring Boot ile tam uyumlu, otomatik konfigürasyon ve basit yapılandırma.
5. **Veritabanı Bağımsızlığı**: Farklı veritabanı türleriyle kolayca çalışabilme.
Spring Data JPA, JPA'nın esnekliğini ve gücünü kullanarak veri erişim işlemlerini basitleştirir ve hızlandırır. Özellikle Spring Boot ile birlikte kullanıldığında, hızlı uygulama geliştirme imkanı sağlar. | mustafacam | |
1,888,777 | CVPR Pre-Show: A Closer Look at the Few-Shot Adaptation of Large Vision-Language Models | With CVPR 2024 coming soon, check out this conversation between Harpreet Sahota (Hacker-in-Residence... | 0 | 2024-06-14T16:25:24 | https://dev.to/voxel51/cvpr-pre-show-a-closer-look-at-the-few-shot-adaptation-of-large-vision-language-models-5cp4 | ai, computervision, machinelearning, datascience | With [CVPR 2024](https://cvpr.thecvf.com/) coming soon, check out this conversation between [Harpreet Sahota](https://www.linkedin.com/in/harpreetsahota204/) (Hacker-in-Residence at Voxel51) and Dr. [Jason Corso](https://www.linkedin.com/in/jason-corso/) (Prof of Robotics at the University of Michigan) with [Julio Silva Rodríguez](https://www.linkedin.com/in/jusiro/), PhD about his paper "[A Closer Look at the Few-Shot Adaptation of Large Vision-Language Models](https://arxiv.org/abs/2312.12730)." | jguerrero-voxel51 |
1,888,807 | jpa ve hibernate | Java Persistence API (JPA) ve Hibernate, Java ile ilişkisel veritabanlarına erişim ve yönetim için... | 0 | 2024-06-14T16:23:35 | https://dev.to/mustafacam/jpa-ve-hibernate-428m | Java Persistence API (JPA) ve Hibernate, Java ile ilişkisel veritabanlarına erişim ve yönetim için kullanılan teknolojilerdir. Her iki teknoloji de Object-Relational Mapping (ORM) yaklaşımını kullanarak, Java nesneleri ile veritabanı tabloları arasında bir köprü kurar. Ancak, JPA ve Hibernate arasında bazı önemli farklar bulunmaktadır.
### Java Persistence API (JPA)
**JPA**, Java platformu için standart bir ORM API'sidir. Java EE (Enterprise Edition) ve Jakarta EE standartlarının bir parçasıdır. JPA, ORM araçları için bir çerçeve sunar, ancak kendisi doğrudan bir ORM aracı değildir. JPA, veritabanı işlemleri için bir dizi anotasyon ve API sağlar, ancak JPA'nın kendisi bir implementasyon içermez. Bu nedenle, JPA kullanmak için bir JPA sağlayıcısına ihtiyaç vardır (örneğin, Hibernate, EclipseLink, OpenJPA).
#### JPA'nın Temel Bileşenleri
1. **Entity**: Veritabanı tablosu ile eşleştirilen Java sınıfıdır.
2. **Entity Manager**: Entity nesnelerini yöneten ve veritabanı işlemlerini gerçekleştiren sınıftır.
3. **Persistence Context**: Entity Manager tarafından yönetilen entity nesnelerinin yaşadığı bellek alanıdır.
4. **Query Language (JPQL)**: SQL benzeri bir dil olan JPQL (Java Persistence Query Language) kullanarak veritabanı sorguları yazmanızı sağlar.
#### JPA Kullanımına Örnek
```java
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
@Entity
public class Employee {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
private int age;
// Getter ve Setter metodları
}
```
### Hibernate
**Hibernate**, popüler bir ORM aracıdır ve JPA sağlayıcısı olarak da kullanılabilir. Hibernate, JPA standartlarını destekler ve kendi ek özelliklerini sunar. Hibernate, veritabanı işlemlerini daha kolay ve daha verimli hale getiren birçok gelişmiş özellik sağlar, örneğin:
- **Cache Management**: İlk ve ikinci seviye önbellekleme.
- **Lazy Loading**: İlişkili nesnelerin gerektiğinde yüklenmesi.
- **Automatic Table Generation**: Entity sınıflarına göre veritabanı tablolarının otomatik oluşturulması.
- **Hibernate Query Language (HQL)**: SQL'e benzer ancak nesneye yönelik bir sorgu dili.
#### Hibernate Kullanımına Örnek
```java
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
@Entity
public class Employee {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
private int age;
// Getter ve Setter metodları
}
```
Hibernate yapılandırması ve kullanımına örnek:
1. **Maven Bağımlılıkları**:
```xml
<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.32.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.4.32.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.23</version>
</dependency>
</dependencies>
```
2. **Hibernate Configuration (hibernate.cfg.xml)**:
```xml
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.cj.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/your_database</property>
<property name="hibernate.connection.username">your_username</property>
<property name="hibernate.connection.password">your_password</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="hibernate.show_sql">true</property>
<mapping class="com.example.Employee"/>
</session-factory>
</hibernate-configuration>
```
3. **Hibernate Util Class (HibernateUtil.java)**:
```java
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil {
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
try {
return new Configuration().configure().buildSessionFactory();
} catch (Throwable ex) {
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
}
```
4. **Main Class (Main.java)**:
```java
import org.hibernate.Session;
import org.hibernate.Transaction;
public class Main {
public static void main(String[] args) {
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction transaction = session.beginTransaction();
Employee employee = new Employee();
employee.setName("John Doe");
employee.setAge(30);
session.save(employee);
transaction.commit();
session.close();
}
}
```
### JPA ve Hibernate Arasındaki Farklar
1. **Standart ve Araç**: JPA bir standarttır, Hibernate ise bu standardı uygulayan bir araçtır.
2. **Ek Özellikler**: Hibernate, JPA'nın sunduğu temel özelliklerin yanı sıra birçok gelişmiş özellik sunar.
3. **Konfigürasyon ve Kullanım**: Hibernate'in kendi konfigürasyon dosyaları ve API'leri vardır, ancak aynı zamanda JPA anotasyonları ve EntityManager API'si ile de kullanılabilir.
### Özet
- **JPA**: Java platformu için bir ORM standardıdır ve farklı JPA sağlayıcıları tarafından uygulanır.
- **Hibernate**: Popüler bir ORM aracıdır ve aynı zamanda JPA sağlayıcısı olarak da kullanılabilir. Hibernate, JPA standartlarını destekler ve ek özellikler sunar.
JPA ve Hibernate birlikte kullanıldığında, JPA'nın standart API'si ve Hibernate'in ek özelliklerinden yararlanılarak daha esnek ve güçlü bir veri erişim katmanı oluşturulabilir. | mustafacam | |
1,888,806 | iphone 15 | Experience the iPhone 15 – your dynamic companion. Dynamic Island ensures you stay connected,... | 0 | 2024-06-14T16:21:55 | https://dev.to/amit29x/iphone-15-a3o | iphone, webdev, beginners, programming |
****
Experience the iPhone 15 – your dynamic companion. Dynamic Island ensures you stay connected, bubbling up alerts seamlessly while you're busy. Its durable design features infused glass and aerospace-grade aluminum, making it dependable and resistant to water and dust. Capture life with precision using the 48 MP Main Camera, perfect for any shot. Powered by the A16 Bionic Processor, it excels in computational photography and more, all while conserving battery life. Plus, it's USB-C compatible, simplifying your charging needs. Elevate your tech game with the iPhone 15 – innovation at your fingertips. Goodbye cable clutter, hello convenience.
**
- Product Description
**
**
- Dynamic Island
**
Dynamic Island bubbles up alerts and Live Activities — so you don’t miss them while you’re doing something else. You can track your next ride, see who’s calling, check your flight status, and so much more.
**
- Highly Durable
**
The innovative new design features back glass that has color infused throughout the material. A custom dual ion-exchange process for the glass, and an aerospace-grade aluminum enclosure, help make the iPhone 15 incredibly durable. Dependably durable. The Ceramic Shield front is tougher than any smartphone glass. Moreover, the iPhone is splash, water, and dust resistant. What a relief.
**
- 48 MP Main Camera
**
Now the Main camera shoots in super-high resolution. So it’s easier than ever to take standout photos with amazing detail — from snapshots to stunning landscapes.
**
- A16 Bionic Processor
**
A16 Bionic powers all kinds of advanced features. Like computational photography used for 24 MP photos and next-gen portraits. Voice Isolation for phone calls. And smooth performance for graphics-intensive games. All with incredible efficiency for great battery life. No wonder it started as a Pro chip.
**
- USB-C Compatible
**
The new USB-C connector lets you charge your Mac or iPad with the same cable you use to charge iPhone 15. You can even use the iPhone 15 to charge the Apple Watch or AirPods. Bye-bye, cable clutter.
Specifications
General
In The Box
Handset, USB C Charge Cable (1m), Documentation
Model Number
MTP03HN/A
Model Name
iPhone 15
Color
Black
Browse Type
Smartphones
SIM Type
Dual Sim(Nano + eSIM)
Hybrid Sim Slot
No
Touchscreen
Yes
OTG Compatible
No
Sound Enhancements
Built-in Stereo Speaker
Display Features
Display Size
15.49 cm (6.1 inch)
Resolution
2556 x 1179 Pixels
Resolution Type
Super Retina XDR Display
GPU
5 Core
Display Type
All Screen OLED Display
Other Display Features
Dynamic Island, HDR Display, True Tone, Wide Colour (P3), Haptic Touch, Contrast Ratio: 2,000,000:1 (Typical), 1,000 nits Max Brightness (Typical), 1,600 nits Peak Brightness (HDR), 2,000 nits Peak Brightness (Outdoor), Fingerprint Resistant Oleophobic Coating, Support for Display of Multiple Languages and Characters Simultaneously
Os & Processor Features
Operating System
iOS 17
Processor Brand
Apple
Processor Type
A16 Bionic Chip, 6 Core Processor
Processor Core
Hexa Core
Operating Frequency
5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n26, n28, n30, n38, n40, n41, n48, n53, n66, n70, n77, n78, n79), 4G FDD-LTE (B1, B2, B3, B4, B5, B7, B8, B12, B13, B17, B18, B19, B20, B25, B26, B28, B30, B32, B66), 4G TD-LTE (B34, B38, B39, B40, B41, B42, B46, B48, B53), 3G UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz), 2G GSM/EDGE (850, 900, 1800, 1900 MHz)
Memory & Storage Features
Internal Storage
128 GB
Camera Features
Primary Camera Available
Yes
Primary Camera
48MP + 12MP
Primary Camera Features
Dual Camera Setup: 48MP Main Camera (Focal Length: 26mm, f/1.6 Aperture, Sensor Shift Optical Image Stabilisation, 100% Focus Pixels, Support for Super-High-Resolution Photos (24MP and 48MP)) + 12MP Ultra Wide Camera (Focal Length: 13mm, f/2.4 Aperture, FOV: 120 Degree) + 12MP 2x Telephoto (Enabled by Quad-Pixel Sensor) (Focal Length: 52mm, f/1.6 Aperture, Sensor Shift Optical Image Stabilisation, 100% Focus Pixels), 2x Optical Zoom-in, 2x Optical Zoom Out, 4x Optical Zoom Range, Sapphire Crystal Lens Cover, Camera Features: Photonic Engine, Deep Fusion, Smart HDR 5, Next Generation Portraits with Focus and Depth Control, Portrait Lighting with Six Effects, Night Mode, Panorama (Upto 63MP), Photographic Styles, Wide Color Capture for Photos and Live Photos, Lens Correction (Ultra Wide), Advanced Red Eye Correction, Auto Image Stabilisation, Burst Mode, Photo Geotagging
Optical Zoom
Yes
Secondary Camera Available
Yes
Secondary Camera
12MP Front Camera
Secondary Camera Features
12MP TrueDepth Camera Setup: (f/1.9 Aperture), Camera Feature: Autofocus with Focus Pixels, Photonic Engine, Deep Fusion, Smart HDR 5, Next Generation Portraits with Focus and Depth Control, Portrait Lighting with Six Effects, Animoji and Memoji, Night Mode, Photographic Styles, Wide Colour Capture for Photos and Live Photos, Lens Correction, Auto Image Stabilisation, Burst Mode, 4K Video Recording at 24 fps, 25 fps, 30 fps or 60 fps, 1080p HD Video Recording at 25 fps, 30 fps or 60 fps, Cinematic Mode Upto 4K HDR at 30 fps, HDR Video Recording with Dolby Vision Upto 4K at 60 fps, Slo Mo Video Support for 1080p at 120 fps, Timelapse Video with Stabilisation, Night Mode Timelapse, QuickTake Video, Cinematic Video Stabilisation (4K, 1080p and 720p)
Flash
Rear: True Tone Flash | Front: Retina Flash
HD Recording
Yes
Full HD Recording
Yes
Video Recording
Yes
Video Recording Resolution
Rear Camera: 4K (at 24 fps/ 25 fps/ 30 fps/ 60 fps), 1080P (at 120 fps/60 fps/30 fps/ 25 fps), 720P (at 30 fps) | Front Camera: 4K (at 24 fps/ 25 fps/ 30 fps/ 60 fps), 1080P (at 120 fps/60 fps/30 fps/ 25 fps)
Digital Zoom
10X
Frame Rate
240 fps, 120 fps, 60 fps, 30 fps, 25 fps, 24 fps
Dual Camera Lens
Primary Camera
Call Features
Video Call Support
Yes
Speaker Phone
Yes
Connectivity Features
Network Type
5G, 4G VOLTE, 4G, 3G, 2G
Supported Networks
5G, 4G VoLTE, 4G LTE, UMTS, GSM
Internet Connectivity
5G, 4G, 3G, Wi-Fi, EDGE
Bluetooth Support
Yes
Bluetooth Version
v5.3
Wi-Fi
Yes
Wi-Fi Version
Wi-Fi 6 (802.11ax)
NFC
Yes
Map Support
Google Maps
GPS Support
Yes
Other Details
Smartphone
Yes
SIM Size
Nano Sim + eSIM
Graphics PPI
460 PPI
Sensors
Face ID, Barometer, High Dynamic Range Gyro, High-G Accelerometer, Proximity Sensor, Dual Ambient Light Sensors
Supported Languages
English (Australia, UK, US), Chinese (Simplified, Traditional, Traditional - Hong Kong), French (Canada, France), German, Italian, Japanese, Korean, Spanish (Latin America, Spain), Arabic, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Finnish, Greek, Hebrew, Hindi, Hungarian, Indonesian, Kazakh, Malay, Norwegian, Polish, Portuguese (Brazil, Portugal), Romanian, Russian, Slovak, Swedish, Thai, Turkish, Ukrainian, Vietnamese
Browser
Safari
Other Features
Aluminium Design, Ceramic Shield Front, Colour Infused Glass Back, Rated IP68 (Maximum Depth of 6 Metres Upto 30 Minutes) Under IEC Standard 60529, 16 Core Neural Engine, Enabled by TrueDepth Camera for Facial Recognition, Apple Pay, Emergency SOS via Satellite, Crash Detection, 5G (sub 6 GHz) with 4x4 MIMO, Gigabit LTE with 4x4 MIMO and LAA, 2x2 MIMO, Second Generation Ultra Wideband Chip, NFC with Reader Mode, Express Cards with Power Reserve, FaceTime Video Calling Over Wi Fi or a Mobile Network, FaceTime HD (1080p) Video Calling Over 5G or Wi Fi, Share Experiences like Movies, TV, Music and Other Apps in a FaceTime Call with SharePlay, Screen Sharing, Portrait Mode in FaceTime Video, Spatial Audio, Voice Isolation and Wide Spectrum Microphone Modes, Zoom with Rear Facing Camera, FaceTime Audio, Voice Over LTE (VoLTE), Wi Fi Calling, Spatial Audio, Voice Isolation and Wide Spectrum Microphone Modes, Spatial Audio Playback, User Configurable Maximum Volume Limit, Supported Formats Include HEVC, H.264 and ProRes, HDR with Dolby Vision, HDR10 and HLG, Upto 4K HDR AirPlay for Mirroring, Photos and Video Out to Apple TV (2nd Generation or Later) or AirPlay Enabled Smart TV, Video Mirroring and Video Out Support: Upto 4K HDR through Native DisplayPort Output Over USB-C or USB C Digital AV Adapter (Model A2119, Adapter Sold Separately), USB-C Connector with Support For: Charging, DisplayPort, USB 2 (Upto 480Mb/s), Built-in Rechargeable Lithium-ion Battery, MagSafe Wireless Charging Upto 15W, Qi Wireless Charging Upto 7.5W, Fast Charge Capable: Upto 50% Charge in Around 30 Minutes with 20W Adapter or Higher (Available Separately), MagSafe: Magnet Array, Alignment Magnet, Accessory Identification NFC, Magnetometer, VoiceOver, Zoom, Magnifier, Accessibility: Voice Control, Switch Control, AssistiveTouch, RTT and Textphone Support, Closed Captions, Live Captions, Personal Voice, Live Speech, Type to Siri, Spoken Content, Rating for Hearing Aids: M3, T4, System Requirements: Apple ID (Required for Some Features), Internet Access, Syncing to a Mac or PC Requires: macOS Catalina 10.15 or Later Using the Finder, macOS High Sierra 10.13 to macOS Mojave 10.14.6 Using iTunes 12.9 or Later, Windows 10 or Later Using iTunes 12.12.10 or Later (Free Download From itunes.com/uk)
Important Apps
App Store, Books, Calculator, Calendar, Camera, Clock, Compass, Contacts, FaceTime, Files, Find My, Health, Home, iTunes Store, Magnifier, Mail, Maps, Measure, Messages, Music, News, Notes, Phone, Photos, Podcasts, Reminders, Safari, Settings, Shortcuts, Siri, Stocks, Tips, Translate, TV, Voice Memos, Wallet, Watch, Weather
GPS Type
GPS, GLONASS, GALILEO, QZSS, BEIDOU, Digital Compass, iBeacon Micro Location
Multimedia Features
Audio Formats
AAC, MP3, Apple Lossless, FLAC, Dolby Digital, Dolby Digital Plus, Dolby Atmos
Video Formats
HEVC, H.264
Dimensions
Width
71.6 mm
Height
147.6 mm
Depth
7.8 mm
Weight
171 g
Warranty
Warranty Summary
1 Year Warranty for Phone and 6 Months Warranty for In-Box Accessories
Domestic Warranty
1 Year
| amit29x |
1,888,805 | The `never` type and `error` handling in TypeScript | One thing that I see more often recently is that folks find out about the never type, and start using... | 0 | 2024-06-14T16:21:53 | https://dev.to/stealc/the-never-type-and-error-handling-in-typescript-4k39 | typescript, nextjs, beginners, programming | One thing that I see more often recently is that folks find out about the never type, and start using it more often, especially trying to model error handling. But more often than not, they don’t use it properly or overlook some fundamental features of never. This can lead to faulty code that might act up in production, so I want to clear doubts and misconceptions, and show you what you can really do with never.
## _"never"_ and _"errors"_.
First of all, don’t blame developers for misunderstandings. The docs promote an example of never and error handling that is true if looked at in isolation, but it’s not the whole story. The example is this:
```TypeScript
// Function returning never must not have a reachable endpoint
function error(message: string): never {
throw new Error(message);
}
```
This comes from the old docs, which are deprecated. The new docs do a much better job, yet this example sticks around in lots of places and is referenced in many blog posts out there.
It’s Schrödinger’s example: It’s both correct and wrong until you open the box and use it in situations that are not as simple as the one in the example.
Let’s look at the correct version. The example states that a function returning never must not have a reachable endpoint. Cool, so if I call this function, the binding I create will be unusable, right?
```TypeScript
function error(message: string): never {
throw new Error(message);
}
const a = error("What is happening?");
// ^? const a: never
```
Yes! The type of a is **_never_**, and I can’t do anything with it. What TypeScript checks for us is that this function won’t ever return a valid value. So it correctly approves that the **_never_**return type matches the error thrown.
But you rarely just break your code in a single function without some extra stuff going on. Usually, you have either a correct value or you throw something.
What I see people do is this:
```TypeScript
function divide(a: number, b: number): number | never {
if (b == 0) {
throw new Error("Division by Zero!");
}
return a / b;
}
const result = divide(2, 0);
if (typeof result === "number") {
console.log("We have a value!");
} else {
console.log("We have an error!");
}
```
You want to model your function in a way that in the _“good”_ case, you return a value of type **_number_**, and you want to indicate that this might return an error. So it’s **_number_** | **_never_**.
And this example is 100% bogus, wrong, and doesn’t express the truth at all! If you look at the type of result, you see that the type is only number. Where has never gone?
Again, I don’t blame the developers. If you look at the original example describing the never type, you might draw your conclusion that this is how you want to handle the error case.
But **I do blame bloggers for creating cheap Medium articles that reach the top hit on Google with wrong information that they didn’t even bother to test. I won’t link the culprit to not give them any link juice, but it’s easy to find with the right keywords. Kids, don’t do this. All your LLMs will learn the wrong things. And your readers, too.**
## What happened to "never"?
Alright, where did the **_never_** type go? It’s easy to understand if you know what never actually represents, and how it works in the type system.
The TypeScript type system represents types as sets of **_values_**. The type checker’s purpose is to make sure that a certain known value is part of a certain set of values. If you have a variable with the value 2, it will be part of the set of number. The type boolean allows for the values true and false. You can fine-grain your types and create unions making the set bigger, or intersections, making the set smaller.
The _**never**_ type also represents a set of values, the empty set. No value is compatible with never. It indicates a situation that should never happen. This is also known as a bottom type.
The reason why never disappeared is simple set theory. If you create a union of a set **_number_** and the empty set, well all that remains is **_number_**. If you add nothing to something, something remains, after all.
never gets swallowed up by reality, and you won’t be able to indicate that this function might return an error. The type system will just ignore it.
Take away the following: Don’t use never as a representation for a thrown Error.
## How to correctly use _never_ for error handling
This doesn’t render _**never**_ useless, though. There are situations where you can model impossible states with this type.
Think of expressing your models as a union type.
```TypeScript
type Circle = { kind: "circle"; radius: number };
type Square = { kind: "square"; side: number };
type Rectangle = { kind: "rectangle"; width: number; height: number };
type Shape = Circle | Square | Rectangle;
```
Note that I set the kind property to a literal type. This is a discriminated union. Usually, when creating a union type, TypeScript will allow elements that fall into the overlapping areas of the sets, meaning that an object with **{ radius: 3, side: 4, width: 5 }** would be accepted as a Shape.
But by using a literal type, TypeScript can distinguish between the different types and will only allow the correct properties for each type. This is because ** "circle" | "square" | "rectangle"** don’t have any overlap.
Also, note that we use a literal string here as a type. This is not a value. **"circle"** is a type that only accepts a single value, the literal string called **"circle"**.
With this discriminated union, we can now use exhaustiveness checks to make sure that we handle all cases.
```TypeScript
function area(s: Shape): number {
switch (s.kind) {
case "circle":
return Math.PI * s.radius ** 2;
case "square":
return s.side ** 2;
case "rectangle":
return s.width * s.height;
default:
// tbd
}
}
```
You even get nice autocomplete in your editor and TypeScript will tell you which cases to handle.
We haven’t handled the _**default**_ case yet, but we can use never to indicate that this case should never happen.
```TypeScript
function assertNever(x: never): never {
throw new Error("Unexpected object: " + x);
}
function area(s: Shape): number {
switch (s.kind) {
case "circle":
return Math.PI * s.radius ** 2;
case "square":
return s.side ** 2;
case "rectangle":
return s.width * s.height;
default:
return assertNever(s);
}
}
```
This is interesting. We have a **default** case that should never happen because our types won’t allow it, and we use **never** as a parameter type. Meaning that we pass a value, even though the **never** set doesn’t have any values. Something is going incredibly wrong if we reach this stage!
And we can use this to let TypeScript help us in the case that our code should change. Let’s introduce a new variant of Shape without changing the area function.
```TypeScript
type Triangle = { kind: "triangle"; a: number; b: number; c: number };
type Shape = Circle | Square | Rectangle | Triangle;
function area(s: Shape): number {
switch (s.kind) {
case "circle":
return Math.PI * s.radius ** 2;
case "square":
return s.side ** 2;
case "rectangle":
return s.width * s.height;
default:
return assertNever(s);
// ~
// Argument of type 'Triangle' is not assignable
// to parameter of type 'never'.
}
}
```
Look at that! TypeScript understands that we didn’t check all variants, and our code will throw red squigglies at us. Time to check if we did everything right!
This is the good stuff about **never**. It helps you make sure that all your values are handled, and if not, it will tell you through red squigglies.
## Error types
You now know how **never** actually works, but you still want to have a way to correctly express errors.
There is a way that is inspired by functional programming languages and made popular by Rust. You can use a result type to express that a function might fail.
**We do the following:**
- We define a type **Error** that carries the error message and has a kind property set to **"error"**.
- We define a generic type **Success** that carries the value and has a kind property set to **"success"**.
- Both types are combined into a Result type, which is a union of **Error** and **Success**.
- We define two functions **error** and success to create the respective types.
**Like this:**
```TypeScript
type ErrorT = { kind: "error"; error: string };
type Success<T> = { kind: "success"; value: T };
type Result<T> = ErrorT | Success<T>;
function error(msg: string): ErrorT {
return { kind: "error", error: msg };
}
function success<T>(value: T): Success<T> {
return { kind: "success", value };
}
```
Let’s refactor the **divide** function from above to use this **Result** type.
```TypeScript
function divide(a: number, b: number): Result<number> {
if (b === 0) {
return error("Division by zero");
}
return success(a / b);
}
```
If we want to use the result, we need to check for the kind property and handle the respective case.
```TypeScript
const result = divide(10, 0);
if (result.kind === "error") {
// result is of type Error
console.error(result.error);
} else {
// result is of type Success<number>
console.log(result.value);
}
```
The important thing is that the types are correct, and the type **system** knows about all the possible states.
And you can play around with that. Maybe you have functions that throw errors. Create a **safe** function that takes the original function and its arguments, and wraps everything into your newly created error handling system.
```TypeScript
function safe<Args extends unknown[], R>(
fn: (...args: Args) => R,
...args: Args
): Result<R> {
try {
return success(fn(...args));
} catch (e: any) {
return error("Error: " + e?.message ?? "unknown");
}
}
function unsafeDivide(a: number, b: number): number {
if (b == 0) {
throw new Error("Division by Zero!");
}
return a / b;
}
const result = safe(unsafeDivide, 10, 0);
```
**Or** if you have a Result, and you want to fail at some point, well then do so:
```TypeScript
function fail<T>(fn: () => Result<T>): T {
const result = fn();
if (result.kind === "success") {
return result.value;
}
throw new Error(result.error);
}
const a = fail(divide(10, 0));
```
It’s not perfect, but you have clear states, clear types, know about what your sets can contain, and when you really have no possible value left.
## Conclusion
I found some code piece expressing thrown **Errors** with **never** a while ago and thought “Oh, the docs messed something up”. I got into a rabbit hole seeing that folks on Medium are suggesting this as a good practice. If there’s something that annoys me, it’s folks teaching things wrong. So I wrote this article to clear things up. I hope it does.
---
@Article by chinnanj
| stealc |
1,888,759 | Creating a windows 11 VM on Azure. | Creating a Windows 11 Virtual Machine (VM) on Azure involves several steps. Here's a step-by-step... | 0 | 2024-06-14T16:13:52 | https://dev.to/adeola_adebari/creating-a-windows-11-vm-on-azure-1gg3 |
Creating a Windows 11 Virtual Machine (VM) on Azure involves several steps. Here's a step-by-step guide to help you set up your VM:
## Prerequisites
1. Azure Subscription: You need an active Azure subscription. If you don't have one, you can sign up for a free account.
2. Azure Portal Access: Ensure you can log into the Azure Portal.
## Step-by-Step Guide
Step 1: Log in to Azure Portal
1 - Navigate to the Azure Portal.
2 - Log in with your Azure account credentials.
## Step 2: Create a Virtual Machine
1 - Navigate to Virtual Machines:
- In the Azure portal, select "Create a resource" from the top left corner.
- Choose "Compute" and then select "Virtual Machine."
2 - Basics Tab:
- Subscription: Select your subscription.
- Resource Group: Create a new resource group or select an existing one.
- Virtual Machine Name: Enter a name for your VM.
- Region: Choose the region where you want to deploy the VM.
- Availability Options: Choose based on your need (e.g., no infrastructure redundancy required).
- Image: Select "Windows 11" from the list of available images. If it's not listed, you might need to use a custom image (see additional notes below).
- Size: Select an appropriate size based on your needs (e.g., Standard_D2s_v3).
- Administrator Account: Create a username and password for the VM.
- Inbound port rules: Select which VM port is accessible from the public internet.
3 - Disks Tab:
- Select the OS disk type (Standard SSD, Premium SSD, etc.).
- Add data disks if necessary.
4 - Networking Tab:
- Configure the virtual network, subnet, public IP, and NIC network security group.
- Enable or disable public IP based on your requirement.
5 - Management Tab:
- Enable or disable boot diagnostics.
- Configure monitoring options like Azure Monitor, Auto-shutdown, and Backup.
6 - Monitoring Tab:
- Configure monitoring options for your VM
7 - Advanced Tab:
- Configure advanced settings like extensions and custom scripts.
8 - Tags Tab:
- Optionally, add tags to categorize your resources.
9 - Review + Create:
- Review the configuration settings.
- Click "Create" to start the deployment.
## Step 3: Access Your VM
- Once the VM is created, navigate to the "Virtual Machines" section in the Azure Portal.
- Select your newly created Windows 11 VM.
- Click on "Connect" to obtain the RDP file.
- Use the RDP file to connect to your VM using the username and password you set up.
This guide provides a basic overview of setting up a Windows 11 VM on Azure. Adjust the configurations based on your specific requirements and organizational policies.
| adeola_adebari | |
1,888,798 | Day 5: Creating Forms in HTML | Welcome to Day 5 of your journey to mastering HTML and CSS! Today, we will explore how to create... | 0 | 2024-06-14T16:11:56 | https://dev.to/dipakahirav/day-5-creating-forms-in-html-1oij | javascript, webdev, html, css | Welcome to Day 5 of your journey to mastering HTML and CSS! Today, we will explore how to create forms in HTML. Forms are essential for collecting user input, whether it's for a sign-up page, a search box, or feedback submission. By the end of this post, you'll be able to create and style various types of forms for your web pages.
#### Basic Form Structure
An HTML form is defined with the `<form>` tag. Inside the form, you can add input fields, labels, buttons, and other elements to collect user data.
Here's a simple example of an HTML form:
```html
<form action="/submit-form" method="post">
<label for="name">Name:</label>
<input type="text" id="name" name="name"><br><br>
<label for="email">Email:</label>
<input type="email" id="email" name="email"><br><br>
<input type="submit" value="Submit">
</form>
```
#### Form Elements
Let's break down the components of the form:
1.**Form Tag**: The `<form>` tag defines the start of a form. The `action` attribute specifies the URL where the form data will be sent, and the `method` attribute specifies the HTTP method (GET or POST) to use when sending the form data.
2.**Labels**: The `<label>` tag defines a label for an input element. The `for` attribute should match the `id` of the corresponding input element.
3.**Input Fields**: The `<input>` tag is used to create input fields. There are various types of input fields:
- `type="text"`: Single-line text input.
- `type="email"`: Email input, which validates email format.
- `type="password"`: Password input, which hides the entered text.
- `type="submit"`: Submit button to send the form data.
4.**Textarea**: The `<textarea>` tag is used for multi-line text input.
```html
<label for="message">Message:</label>
<textarea id="message" name="message" rows="4" cols="50"></textarea>
```
5.**Select**: The `<select>` tag is used to create a drop-down list.
```html
<label for="country">Country:</label>
<select id="country" name="country">
<option value="usa">USA</option>
<option value="canada">Canada</option>
<option value="uk">UK</option>
</select>
```
6.**Radio Buttons**: The `<input type="radio">` tag is used to create radio buttons.
```html
<label for="gender">Gender:</label>
<input type="radio" id="male" name="gender" value="male">
<label for="male">Male</label>
<input type="radio" id="female" name="gender" value="female">
<label for="female">Female</label>
```
7.**Checkboxes**: The `<input type="checkbox">` tag is used to create checkboxes.
```html
<label for="subscribe">Subscribe to newsletter:</label>
<input type="checkbox" id="subscribe" name="subscribe">
```
#### Creating Your HTML Form
Let's create an HTML form that incorporates various input elements:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>HTML Form</title>
</head>
<body>
<h1>Contact Us</h1>
<form action="/submit-form" method="post">
<label for="name">Name:</label>
<input type="text" id="name" name="name"><br><br>
<label for="email">Email:</label>
<input type="email" id="email" name="email"><br><br>
<label for="message">Message:</label>
<textarea id="message" name="message" rows="4" cols="50"></textarea><br><br>
<label for="country">Country:</label>
<select id="country" name="country">
<option value="usa">USA</option>
<option value="canada">Canada</option>
<option value="uk">UK</option>
</select><br><br>
<label for="gender">Gender:</label>
<input type="radio" id="male" name="gender" value="male">
<label for="male">Male</label>
<input type="radio" id="female" name="gender" value="female">
<label for="female">Female</label><br><br>
<label for="subscribe">Subscribe to newsletter:</label>
<input type="checkbox" id="subscribe" name="subscribe"><br><br>
<input type="submit" value="Submit">
</form>
</body>
</html>
```
#### Summary
In this blog post, we learned how to create and style forms in HTML. We explored various form elements, including input fields, labels, text areas, drop-down lists, radio buttons, and checkboxes. Practice creating forms to collect user data effectively.
Stay tuned for Day 6, where we will cover semantic HTML and its benefits. Happy coding!
Feel free to leave your comments or questions below. If you found this guide helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
### Follow and Subscribe:
- **Website**: [Dipak Ahirav] (https://www.dipakahirav.com)
- **Email**: dipaksahirav@gmail.com
- **Instagram**: [devdivewithdipak](https://www.instagram.com/devdivewithdipak)
- **YouTube**: [devDive with Dipak](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
)
- **LinkedIn**: [Dipak Ahirav](https://www.linkedin.com/in/dipak-ahirav-606bba128) | dipakahirav |
1,888,797 | spring data jdbc | Spring Data JDBC, Spring Framework'ün bir modülü olup, JDBC tabanlı veritabanı erişimini daha modern... | 0 | 2024-06-14T16:08:55 | https://dev.to/mustafacam/spring-data-jdbc-17e4 | Spring Data JDBC, Spring Framework'ün bir modülü olup, JDBC tabanlı veritabanı erişimini daha modern ve basit bir şekilde gerçekleştirmek için kullanılır. Spring Data JDBC, Spring Data'nın prensiplerini kullanarak veri erişimini daha kolay ve yönetilebilir hale getirir, ancak ORM araçlarının aksine doğrudan JDBC ile çalışır.
### Spring Data JDBC'nin Temel Özellikleri
1. **Basit ve Doğrudan Erişim**: Spring Data JDBC, ORM (Object-Relational Mapping) araçlarının karmaşıklığından kaçınarak doğrudan veritabanı işlemlerini gerçekleştirir.
2. **Repository Temelli**: Spring Data'nın sunduğu `CrudRepository` ve `PagingAndSortingRepository` arayüzlerini kullanarak veri erişim katmanını oluşturur.
3. **Anotasyonlar**: Entity tanımları için basit anotasyonlar kullanır (`@Table`, `@Id`, `@Column`, vb.).
4. **Kolay Konfigürasyon**: Spring Boot ile entegre çalışarak otomatik konfigürasyon sağlar.
### Spring Data JDBC Kullanarak Veritabanı İşlemleri
Aşağıda, Spring Data JDBC kullanarak bir veritabanı bağlantısının nasıl kurulacağını ve veri işlemlerinin nasıl yapılacağını gösteren bir örnek bulunmaktadır.
### Maven Bağımlılıkları
```xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
```
### Uygulama Özellikleri (application.properties)
```properties
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.h2.console.enabled=true
spring.datasource.initialize=true
spring.jpa.hibernate.ddl-auto=update
```
### Entity Sınıfı (Employee.java)
```java
import org.springframework.data.annotation.Id;
import org.springframework.data.relational.core.mapping.Table;
@Table("employees")
public class Employee {
@Id
private Long id;
private String name;
private int age;
// Getter ve Setter metodları
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
```
### Repository Arayüzü (EmployeeRepository.java)
```java
import org.springframework.data.repository.CrudRepository;
public interface EmployeeRepository extends CrudRepository<Employee, Long> {
}
```
### Service Sınıfı (EmployeeService.java)
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class EmployeeService {
@Autowired
private EmployeeRepository employeeRepository;
public Employee saveEmployee(Employee employee) {
return employeeRepository.save(employee);
}
public Iterable<Employee> getAllEmployees() {
return employeeRepository.findAll();
}
}
```
### Controller Sınıfı (EmployeeController.java)
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping("/employees")
public class EmployeeController {
@Autowired
private EmployeeService employeeService;
@PostMapping
public Employee createEmployee(@RequestBody Employee employee) {
return employeeService.saveEmployee(employee);
}
@GetMapping
public Iterable<Employee> getAllEmployees() {
return employeeService.getAllEmployees();
}
}
```
### Spring Boot Uygulaması (SpringDataJdbcApplication.java)
```java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringDataJdbcApplication {
public static void main(String[] args) {
SpringApplication.run(SpringDataJdbcApplication.class, args);
}
}
```
### Açıklamalar
1. **Bağımlılıklar**: Spring Boot starter'ları ve H2 veritabanı bağımlılıkları tanımlanmıştır.
2. **Uygulama Özellikleri**: H2 veritabanı için bağlantı bilgileri ve diğer yapılandırmalar yapılmıştır.
3. **Entity Sınıfı**: `Employee` sınıfı, veritabanı tablosu ile eşleştirilmiştir. `@Table` ve `@Id` anotasyonları kullanılmıştır.
4. **Repository Arayüzü**: `EmployeeRepository` arayüzü, Spring Data'nın `CrudRepository` arayüzünü genişleterek temel CRUD işlemlerini sağlar.
5. **Service Sınıfı**: `EmployeeService` sınıfı, iş mantığını içerir ve `EmployeeRepository`'i kullanarak veri işlemlerini gerçekleştirir.
6. **Controller Sınıfı**: `EmployeeController` sınıfı, RESTful API uç noktalarını tanımlar.
7. **Spring Boot Uygulaması**: `SpringDataJdbcApplication` sınıfı, Spring Boot uygulamasını başlatır.
Bu yapı, Spring Data JDBC kullanarak basit ve etkili bir veri erişim katmanı oluşturmanızı sağlar. CRUD işlemleri için gereken kod miktarını azaltır ve veri erişimini daha yönetilebilir hale getirir. | mustafacam | |
1,888,796 | GetBlock Offers Custom zkSync Nodes for Airdrop Management | As the ZK token airdrop gets closer, GetBlock takes measures to support crypto enthusiasts who... | 0 | 2024-06-14T16:08:27 | https://dev.to/getblockapi/getblock-offers-custom-zksync-nodes-for-airdrop-management-1l6f | zksync, airdrop, nodes, cryptocurrency |
As the ZK token airdrop gets closer, GetBlock takes measures to support crypto enthusiasts who participate in it. It offers free private zkSync RPC nodes that can be used to claim airdrop quickly. Due to high activity, network congestion is expected, but GetBlock users will avoid such issues.
## GetBlock zkSync nodes help participants obtain ZK without issues
All large blockchain airdrops, with hundreds of thousands of participants, lead to highly increased blockchain network usage. Therefore, performance can fall drastically, and transactions can take much more time than expected, so participants can lose efficient deals.
That’s why GetBlock, being a large blockchain node provider, offers free custom [zkSync nodes](https://getblock.io/?utm_source=external&utm_medium=article&utm_campaign=devto_zkairdrop) for all participants. With them, network issues can be avoided, as they’ll use the resources of these nodes. It guarantees the transaction speed and stability required to obtain tokens quickly and then use or trade them.
The right instruments are what can make a difference here, providing instant airdrop access. Even ten minutes matter here, as prices can fluctuate quickly. So, with GetBlock nodes, it’s possible to get the maximum benefit.
## Custom zkSync RPC nodes stay when the public infrastructure is overloaded
To get them, users can register on GetBlock and access their dashboard. Once here, they’ll see the list of available endpoints, with the current request balance. Free plans offer 40,000 requests per day, which is more than enough for airdrop claiming.
_Image by GetBlock_
So, they can locate zkSync nodes below and generate URL address of their node. This address must be connected to the wallet, such as MetaMask, where the token will be delivered. Most of the wallets supports quick endpoint connection in their interfaces.
GetBlock CEO Arseniy Voitenko says about the previous success in helping participants of ARB and STRK airdrops and invited zkSync participants to join GetBlock.
_After two years in development, the most anticipated retroactive airdrop in crypto history - zkSync - is finally confirmed. Despite the wave of criticism from the zkSync community, we’re always ready to deliver premium-class infrastructure for promising networks. Previously, we offered similar solutions for ARB and STRK distributions, and many crypto enthusiasts managed to outperform their competitors in claiming rewards._
The planned date is June 17, 2024, and over 690,000 wallets are connected. Various crypto exchanges plan to list ZK token right after the airdrop. Therefore, the event in highly popular and anticipated.
## zkSync airdrop critique, expectations, and GetBlock successes
Still, it has been criticized for unclear selection criteria, suspiciously high Sybil accounts share among the eligible wallets, and excessively long development of more than two years. However, many participants believe in token, which is indicated by the hype surrounding it.
GetBlock is ready to help all participants with its infrastructure. Before, it supported the STRK and ARB airdrops in 2023 and 2024, using its corresponding nodes. Having more than 50 blockchains available with crypto wallet integration, GetBlock strives to support Web3 developers and crypto traders worldwide in their endeavors.
Users can claim zkSync nodes for free. Other GetBlock products include [dedicated nodes](https://getblock.io/dedicated-nodes/?utm_source=external&utm_medium=article&utm_campaign=devto_zkairdrop) for large-scale projects, which prices start from $600/month. With its unlimited number of blockchain requests and unlimited speed, they can support apps with thousands of users, ensuring high usability and performance. | getblockapi |
1,888,795 | Advanced Git Workflows for Efficient Project Management – Part 7 | Introduction After mastering the basics and more intermediate topics like conflict... | 0 | 2024-06-14T16:08:09 | https://dev.to/dipakahirav/advanced-git-workflows-for-efficient-project-management-part-7-2k29 | webdev, github, git, learning | #### Introduction
After mastering the basics and more intermediate topics like conflict resolution, it's time to explore advanced Git workflows. These workflows are designed to enhance team collaboration, streamline project development, and maintain a clean and efficient project history. This installment will cover two popular workflows: Git Flow and the Forking workflow.
please subscribe to my [YouTube channel](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
) to support my channel and get more web development tutorials.
#### Git Flow
Git Flow is a branching model designed for projects with scheduled release cycles. This workflow defines a strict branching model designed around the project release. Here’s how it works:
- **Master Branch**: The main branch where the source code of HEAD always reflects a production-ready state.
- **Develop Branch**: Derived from the master, this branch serves as an integration branch for features. It always reflects a state with the latest delivered development changes for the next release.
- **Feature Branches**: Each new feature should reside in its own branch, which can be pushed to the central repository for backup/collaboration. But, these should never interact directly with the master branch.
- **Release Branches**: Branching from develop, these are used to prepare for a new production release. They allow for minor bug fixes and preparing meta-data for a release.
- **Hotfix Branches**: When a critical bug in a production version must be resolved immediately, a hotfix branch is created from the master branch.
#### Forking Workflow
The Forking workflow is primarily used in open-source projects but can also be beneficial in corporate environments where a more robust security protocol is needed. Here’s how it typically operates:
- **Central Repository**: Only project maintainers have write access to the official repository. All other contributors must fork this repository, push changes to their forked repo, and then submit a pull request to merge their changes.
- **Forks**: Contributors clone the central repo, but push to their personal server-side repositories. Their changes are fetched by the project maintainer and merged into the official repository as needed.
#### Integrating Advanced Workflows
1. **Choose the Right Workflow**: Depending on your project's needs, choose a workflow that best fits. Git Flow is excellent for managed release cycles, while the Forking workflow offers more control over contributions.
2. **Use Tagging and Releases**: Both workflows benefit from using tags and releases to manage versions effectively.
3. **Regularly Review and Merge Pull Requests**: Especially in the Forking workflow, it's essential to regularly review and merge pull requests to integrate new features and fixes.
#### Best Practices for Advanced Workflows
- **Documentation**: Maintain clear documentation for your chosen workflow to ensure all team members understand their roles and responsibilities.
- **Continuous Integration/Continuous Deployment (CI/CD)**: Implement CI/CD pipelines to automate testing and deployment, which complements these workflows.
- **Regular Communication**: Use tools like issue trackers and team meetings to keep everyone aligned with the project's progression and upcoming changes.
#### Conclusion
Advanced Git workflows are fundamental for scaling project management and enhancing collaboration in larger teams. By choosing and adhering to the appropriate workflow, teams can ensure smoother transitions, better quality control, and efficient project management. In the next part of our series, we will delve into integrating Git with CI/CD pipelines to further automate and streamline your development process.
Stay tuned for more techniques to elevate your project management with Git!
Feel free to leave your comments or questions below. If you found this guide helpful, please share it with your peers and follow me for more web development tutorials. Happy coding!
### Follow and Subscribe:
- **Website**: [Dipak Ahirav] (https://www.dipakahirav.com)
- **Email**: dipaksahirav@gmail.com
- **Instagram**: [devdivewithdipak](https://www.instagram.com/devdivewithdipak)
- **YouTube**: [devDive with Dipak](https://www.youtube.com/@DevDivewithDipak?sub_confirmation=1
)
- **LinkedIn**: [Dipak Ahirav](https://www.linkedin.com/in/dipak-ahirav-606bba128) | dipakahirav |
1,885,062 | A Bit Saved is a Bit Earned | Unorthodox - the act of not orthodoxing A Wise Man Once Said A penny saved is a... | 0 | 2024-06-14T16:06:01 | https://dev.to/fonzacus/a-bit-saved-is-a-bit-earned-1k6m | beginners, learning | ###### _Unorthodox_ - the act of not orthodoxing
# A Wise Man Once Said
A penny saved is a penny earned, a great idiom to live by as we can minimize greed. My siblings and I grew up with the rich parents cheat code, but we are not too swayed by money. We are also trying to raise our kids the same way. Why I would bring this up is a focus on minimalism with coding. On more minimal budgets, a few bytes saved can be the difference between a running project, and a crawling one.
## Pass the Source
While not having a formal CV in coding, I do like playing around, coding is no exception. I am fine with any type of [coding convention](https://wikipedia.org/wiki/Coding_conventions), but I prefer the GNU style as it is easiest to read even without syntax highlight. Modern styles like the ever-changing [Google style guide](https://developers.google.com/style/code-samples) (go one up for the other tech giants) do better with minimizing extra space. There are also exceptions to the rules that require careful indenting like Python, they are only a few, most are fine anyway. Back in the old days (pre-smartphone) I would suggest those wanting to code to try their hands with HTML while practicing CSS and JS as they can easily be tested on even phones. Nowadays there are even some complete compilers and debuggers available, especially those that want to give [Termux](https://github.com/termux/termux-app), their Debian `build-essential `, and root repositories a try.
Code editors are also guilty here, as they try and force certain styles, and it is hard to tweak it to our liking. There are very nice tools like language servers and code snippets around, even some backed [by AI](https://github.com/SilasMarvin/lsp-ai). Web code editors have taken major steps forward within a short time span, and with better AI around the corner, could outpace traditional editors easily. Nowadays choosing one without a source directory project manager is a challenge. Even [web based gits](https://docs.github.com/en/codespaces/the-githubdev-web-based-editor) think so too. I have been using Vim for almost 15 years, and my usual setup was akin to [SpaceVim](https://github.com/SpaceVim/SpaceVim) until I wanted to become more minimal. At the end of the day, beauty is in the eye of the beholder.
## Production Unready
In a released state, I feel it should be a good time to minimize. Few people are going to look into the code, and many compilers strip away the excess weight, but many do not. I agree modern systems can easily tread through without a care in the world, but the penny idiom still hits me. Many projects are going to have different branches to hold different states, so why not have a minimum build for release like most CDNs (content delivery network) do.
There are many plugins for various text editors that do the job well. Google has a very useful JS minimizer called [Clojure Compiler](https://developers.google.com/closure/compiler), It is also available [online](https://closure-compiler.appspot.com/home). While simple options are easier overall, you can also select the overkill option to also rename everything, obfuscate, and minimize it to the extreme. A great tool to push the release state to. Other languages do not really have a minimizer as capable as Clojure.
## Parental Discretion is Advised
I will be using basic HTML as an example since it is the easiest (probably) to understand even for complete beginners. I have also played with owning, hosting, leasing, and admining sites.
As an example; where `_` is a tab, 164 - bits - 122:
```
<section> |<section>
_<div>THIS |_<div>THIS
__<div>THAT |__<div>THAT
___<div>HERE</div> |___<div>HERE</div>
___<div>THERE |___<div>THERE
____<div>EVERYWHERE</div> |____<div>EVERYWHERE</div>
____<div> |____<div>
_____ANYWHERE |_____ANYWHERE
____</div> |</section> <- HEAD SHOT
___</div>
__</div>
_</div>
</section>
```
We saved 38 bits, where 1 tab is 1 bit, and a new line is 2. In the short term, this may not mean much, but in the long term, [the savings can be huge](https://blog.cloudflare.com/2-petabytes-of-bandwidth-and-real-money-saved). If we also minimize all tabs to a still human-readable format, we get 100 bits. Remove the lines, and we get a of 92 bits! Imagine if top sites did this, wouldn't the savings reach unspeakable levels? Many site generators tend to be pretty restrictive, and trying to minimize space can be a challenge.
```
<section> | <section><div>THIS<div>THAT<div>HERE</div><div>THERE<div>EVERYWHERE</div><div>ANYWHERE</section>
<div>THIS | a bit too chaotic
<div>THAT
<div>HERE</div>
<div>THERE
<div>EVERYWHERE</div>
<div>
ANYWHERE
</section>
```
Modern browsers will work perfectly fine, those from the Y2K era might choke. Those in the 90s might crash and break the PC when given a popup BTW. Text editors and their syntax engines will properly recognize messy codes. Your favorite browser's devtool will also perfectly line them up nicely as source pages, and also automatically close elements. Many sites have also started excluding `<head>` and `<body>` elements for a while, well, I felt like pushing beyond that. This may not even be trendy as most programmers find this unorthodox. IMHO, it is easier to work with as most of the time, machines are smarter than us.
## The Whole Nine Yards
Some may be disgusted at what I am trying to say, but give it some thought. Site hosting costs have gone down over the years, but everything continues to get bigger. There are many cost-cutting alternatives, like using CDNs, or even offloading media elsewhere. Phones are also becoming more PC-like, with specs rivaling mid-tier consumer laptops. 5 years ago, who would had thought of seeing >10GB of RAM and VGA as low-tier?
If a penny could be saved, would you do it? Would you pass that penny to somewhere else? Would the penny be happy?
###### Save Mother Earth
| fonzacus |
1,888,794 | CHANNEL LETTER SIGNS CHICAGO | Channel letter signs, including dimensional letter signage, backlit channel letters, and custom... | 0 | 2024-06-14T16:04:00 | https://dev.to/signfreaks_usa/channel-letter-signs-chicago-1752 | webdev | Channel letter signs, including dimensional letter signage, backlit channel letters, and custom [channel letter signs chicago](https://signfreaks.com/custom-signs/channel-letters-chicago/), serve as a vibrant embodiment of your brand’s identity. At SignFreaks, we specialize in crafting these three-dimensional signs, meticulously tailored to your business’s unique vision. Our expertise extends to aluminum channel letters, known for their durability and versatility in design. We bring your storefront to life with illuminated channel letters, , even in low-light conditions, ensuring maximum visibility and impact.
In Chicago, our team stands out as the premier choice for channel letter signs. Whether you seek backlit channel letter signs or letter signs for businesses in the city of Chicago, we offer unparalleled craftsmans-hip and service. Trust SignFreaks to fabricate, install, or repair your channel letter signs, empowering your business with an effective advertising solution that leaves a lasting impression.
We offer personalised channel letter signs in Chicago, each with different lighting options and materials to fit your specific needs. Some standard options are listed below
For more information visit our website SignFreaks - Custom Sign Company | signfreaks_usa |
1,888,793 | Rust Vs. Other Programming Languages: What Sets Rust Apart? | Introduction The rapid emergence of different programming languages in the technology... | 0 | 2024-06-14T16:02:00 | https://strapi.io/blog/rust-vs-other-programming-languages-what-sets-rust-apart |
## Introduction
The rapid emergence of different programming languages in the technology landscape may affect the programming language/tool choice while building a software product. Despite this, some programming languages stand out, and Rust is one of them. Rust is a systems language designed to solve challenging software problems.
Since its announcement in 2010, Rust has witnessed tremendous growth. Its modern syntax and thriving community are quite attractive, so it is no wonder it was referred to as the "most loved" programming language in the 2023 StackOverflow Developer's survey.
This article covers an overview of Rust programming language. It starts with its historical background. Then, it explores its fantastic and unique features, application areas, and how it compares to other programming languages. We will see why companies love Rust and how they use it.
## Historical Background of Rust and its Rise in Popularity
It started when the creator, Graydon Hoare, had an elevator-crashing experience and realized this was a problem of poor memory management. So, in 2006, Hoare designed Rust as a side project to handle pitfalls such as memory management in C and C++ while offering type safety, high performance, and concurrency. Mozilla further sponsored the language and released it in 2010.
*photo from Google Trends showing Rust's internet trend over the past five years*
In 2012, Rust underwent a significant evolution, marked by the introduction of versions 0.2 and 0.3. These versions brought with them a host of new features, including classes, polymorphism, and destructors, which significantly enhanced the language's functionality. This evolution was not a solitary effort, but a testament to the collective progress of the Rust community.
In its early days, the Rust team gradually consolidated several memory management techniques. However, in 2013, the team removed the garbage collector and maintained ownership rules.
The team released the first stable version, version 1.0, in 2015 after several versions.
2017 saw the integration of Rust components into Firefox 57. In 2020, the massive layoff at Mozilla raised concerns for the future of Rust. However, the Rust Foundation was formed, and its establishment was announced in 2021. Some companies, like AWS, Google, Microsoft, etc., founded the foundation and took ownership of the associated domain names.
*photo from 2023 StackOverflow Survey showing Rust as the most admired language with 84.66%*
## Features of Rust
1. Concurrency and Parallelism
Concurrency is the ability for different parts of a program to run independently. The Rust concurrency model is called the fearless concurrency. It enables developers to write bug-free and easy-to-refactor code.
Threading is a method for implementing concurrency in Rust. It is a core feature of the concurrency model. With threads, tasks are subdivided and run in multiple processes simultaneously.
The std::thread module in Rust is a powerful resource for creating and managing threads. It provides functions like 'spawn ', which not only create a thread but also execute a specific function within that thread, offering developers a high level of control over their concurrent processes.
Parallelism improves performance and efficiency in the codebase. Multiple CPU cores execute processes. Rayon is a library that implements parallelism in Rust.
2. Performance and Efficiency
Zero-cost abstraction in Rust achieves good performance and efficiency. Abstractions such as closures and iterators prevent runtime overhead. Features like concurrency and parallelism also contribute to the overall performance.
3. Memory Safety and Ownership
A program manages memory through memory safety to prevent errors. The ownership system ensures memory safety in Rust and dictates memory management in the program. Every value in the program has an owner. When the current context is no longer accessible to the owner, the memory associated with the value is deallocated or freed.
4. Strong Package Manager with Cargo
Cargo is Rust's package manager, making handling package dependencies and distribution easier. Package versions and dependencies can be added and specified when working on a project. Cargo also offers a range of commands to automate tasks such as running tests and compiling code.
5. Community and Documentation
The Rust community commits to welcoming and supporting new members. It has various platforms and forums where users can communicate and gain support. Since Rust is an open-source project, community members actively contribute to and maintain it.
Industry experts organize events to enhance learning and stay up-to-date with new versions. The community is friendly and inclusive, making it safe for everyone of different diversities to participate and engage.
The Rust official documentation is a robust and well-detailed guide for the language, including its syntax and libraries. The following are different sections of the documentation:
- [The Rust Book](https://doc.rust-lang.org/book/)
- [Rust by example](https://doc.rust-lang.org/rust-by-example/)
- [Rust reference](https://doc.rust-lang.org/reference/)
- [Rustonomicon](https://doc.rust-lang.org/nomicon/)
- [The standard library](The standard library)
6. Modern and Clean Syntax
Rust is known for its modern and clean syntax, which balances complexity and readability. Its syntax offers closure and pattern matching, which help make complex code readable.
7. Safety and Reliability
Safety and reliability are core principles of Rust in its design and syntax. This feature is a result of the removal of the garbage collector.
## How Does Rust Compare to other Programming Languages
This section compares Rust with other programming languages, discussing its strengths and weaknesses in areas of software development.
*photo from 2023 StackOverFlow Survey showing Rust as the 14th most popular language with 13.05%*
## Rust Vs. Python
### When is Rust better than Python?
- Concurrency
Due to its ownership feature, Rust is more efficient in concurrent programming. It helps developers write multi-threaded programs without introducing bugs. Python is limited in concurrent programming due to the Global Interpreter Lock (GIL). Thus, Rust does concurrent programming better than Python.
- Performance
Rust is a system programming language suitable for high-performance applications. In some cases, It can run twice as well as Python. Rust's memory management feature also adds to its performance. Python is an interpreted language that runs processes slower due to compilation.
- Security
The Rust language is designed to provide optimal security for applications. Rust’s programs are statically typed, detecting errors before compilation. Memory safety also enhances the security of the code.
Python, on the other hand, interprets its program just before execution, which can lead to runtime errors and potential vulnerabilities. This means that developers using Python must be diligent in managing memory, a task that can consume both time and resources.
- Garbage collection
The Rust ownership system eliminates garbage collection. Python uses garbage collection to check for unused memory and manage it. However, this may cause hitches in its performance.
### When is Python better than Rust?
- Learning Curve
Python is very beginner-friendly. The code structure is more readable, and the syntax is simple. Developers at all levels can learn quickly. Complex features, such as concurrency, make Rust’s learning curve steeper.
- Flexibility
Python is applicable in many areas of technology. It supports several domains, like web development, machine learning, etc., with many libraries. While Rust is great for system programming, it offers less flexibility than Python.
- Documentation
Due to its longevity, Python's documentation is extensive, user-friendly, and easier to understand. Rust's documentation is comprehensive but more technical and not user-friendly.
- Community
Python has a larger community. It is an open-source project with a wide range of domains and applications. Rust has a growing community with active contributors and users. However, it is considered smaller than that of Python.
## Rust Vs. JavaScript
### When is Rust better than JavaScript
- Memory Management
One key difference between Rust and JavaScript is how they handle memory. JavaScript uses garbage collection to free up memory automatically. Rust uses ownership system rules to deallocate memory, resulting in better performance and minimal errors.
- Type System and Compiled-time Checks
In Rust, developers can define variables alongside their data type. This feature ensures security and error handling before program execution. JavaScript is a dynamically typed programming language whose variables can be any data type. While this makes JavaScript flexible, it may lead to runtime errors.
- Performance
Rust outperforms JavaScript. Rust programs are highly optimized and suitable for heavy tasks. JavaScript is applicable for web-based applications.
- Error Handling
JavaScript uses the `try-catch` technique to catch errors at runtime. While this guarantees error handling, unhandled exceptions may occur at runtime and cause breaks in the code. Rust uses the `result-match` technique to catch errors before code execution.
### When is JavaScript better than Rust
- Ecosystem and Community
Due to its longevity, JavaScript has a larger ecosystem and community. It has a range of active frameworks and libraries, and it is easy to find solutions to problems in the community. Rust has a smaller and growing community, although it strives to help new learners.
- Rapid Prototyping
JavaScript’s dynamic typing feature and flexibility make writing and testing code easy, especially for small projects. Rust is statically typed and can slow down the prototyping process.
- Cross-platform Development
JavaScript versatility allows developers to build applications across different operating systems and environments with minimal adjustment. While Rust has cross-platform functionality, it doesn’t surpass JavaScript.
- Web Development
JavaScript is the language of the web. No programming language comes close to this functionality. Rust also applies in web development but has problems writing async request handlers.
## Rust Vs. C++
### When is Rust better than C++
- Memory Safety
Rust ensures efficient memory safety functionality through its ownership system. C++ lacks memory safety, thus making it vulnerable to memory-related errors. In C++, developers need to manage memory by themselves.
- Concurrency
Developers achieve concurrency in Rust without synchronization bugs. Although C++ offers concurrent programming through libraries like threads, it lacks Rust safety features. Manual synchronization primitives can provide safety in C++, but they are error-prone.
- Modern Syntax
Rust offers a more modern and expressive syntax compared to C++, which has a more complex syntax. Rust has a smaller feature set compared to C++, which enhances a developer’s productivity. C++ may offer flexibility due to its numerous features, but it also increases complexity.
- Ecosystem and Community
The vibrant and growing Rust community is devoted to improving code quality. A growing ecosystem of libraries and frameworks makes development easier.
### When is C++ better than Rust
- Fine-grained Control
C++ allows developers to manage system memory in their own way. The program's resources are free to use. Based on the specific performance target, developers can implement optimizations and fine-tuning.
- Large Standard Library
C++ has an extensive list of standard libraries packed with functionality to solve various tasks. These libraries provide built-in components to execute tasks such as data structures, algorithms, and input/output operations. Developers can then build high-performance applications with the aid of these libraries.
- Legacy Systems
C++ is compatible with legacy systems, especially since it is an extension of C. Thus, developers can easily integrate it into legacy codebases, easing migration processes. Because Rust is a newer language, incorporating it into legacy codebases might pose a challenge.
- Learning Curve
C++ shares similarities with some Object-Oriented Programming (OOP) languages, such as C and Java. Developers with experience with OOP languages can quickly learn C++. In addition, there are abundant learning resources and tutorials to aid learning.
## Applications of Rust
Rust is applicable in various fields due to its unique and dominant features. This section explores the areas where Rust is applicable.
1. Systems Development
Rust's efficiency and memory safety make it a top language for developing operating systems. Since safety in modern applications is essential to prevent cyber attacks, companies and developers tend to use Rust in systems programming.
2. Web Development
While some languages are popular in web development, Rust is also applicable due to its high performance and safety. Rust WebAssembly enables developers to compile Rust code into a binary format and execute it in the browser.
3. Game Development
Aside from C# and C++, Rust is also a language developers use in game development. Game engines like Amethyst offer efficiency and faster runtimes. Since C++ is similar to Rust, it is easier for C++ developers to expand their knowledge and use Rust in development.
4. Embedded System
Rust is beginning to dominate the field of embedded systems. Memory management is a common challenge in embedded systems, making Rust a better technology for programming embedded systems.
5. Blockchain and Cryptography
Blockchain technology requires cryptographic operations and demands high performance and security. Blockchain projects such as Solana and Parity Ethereum have adopted Rust in their technology.
6. Data science and Machine Learning
Rust is considered the next big thing in data science and machine learning. While there are popular languages like Python and R, Rust’s outstanding efficiency and ownership system make it a good option for handling large datasets.
## Popular Companies that use Rust
Companies worldwide have found Rust programming language applicable to their products, and developers love the language as it increases productivity. This section explores the top applications that use Rust, how top companies use Rust, and why these companies like Rust.
*Popular companies that use Rust*
## Top Applications that Use Rust
- Dropbox
Dropbox is a collaboration and cloud storage platform that uses Rust to improve its infrastructure reliability and performance. Dropbox Capture, a visual communication tool, has benefited from Rust in ways such as better error handling. Currently, Dropbox uses Rust in the core file-storage system that serves over 500 million users.
- Figma
Figma is a web-based design collaborative tool that utilizes Rust in its backend infrastructure. The team at Figma has witnessed incredible improvements in their server-side performance. Figma rewrote their multiplayer server in Rust using TypeScript.
- Discord
The Discord team switched from Go to Rust when they discovered that Go always forced garbage collection. Today, they use Rust on the client side for the video encoding pipeline and Elixer NIFS on the server side. Also, Discord switched from Go to Rust in their Read State service.
- Cloudflare
Cloudflare is a leading internet service security provider. The Cloudflare application uses Rust in DDoS detection. The team also developed an open-source Rust framework called Pingora that builds services for traffic on Cloudflare. Cloudflare's Data Loss Prevention team uses Rust in the data and control plane.
## Big companies that use Rust
- Amazon
Amazon is an e-commerce company that owns Amazon Web Services (AWS) but uses AWS independently by providing cloud computing services to individuals and companies. Firecracker was Amazon's first notable product implementation using Rust. They also use Rust to deliver services such as Amazon Simple Storage Service (Amazon S3), Amazon Elastic Compute Cloud (Amazon EC2), and Amazon CloudFront.
Amazon's commitment to Rust is unwavering. They recognize its potential to help them build and deliver robust services faster. This commitment is further demonstrated by their sponsorship of the Rust open-source project since 2019.
- Microsoft
Microsoft is a founding member of Rust’s foundation. The company has since dedicated itself to the development and success of the programming language. Microsoft built its core Windows libraries with Rust and plans to write future projects with Rust. Microsoft’s Windows 11 boots with Rust and passes Graphic Device Interface (GDI) tests. Microsoft may not be rewriting Windows with Rust soon.
- The Mozilla developer team built the Firefox CSS engine, Stylo, with Rust. Rust also occupies 11.4% of the code in Firefox and other languages. Mozilla was the first founding member of the Rust project. The company’s commitment to seeing the language grow to success is a priority. Rust is considered one of Mozilla’s main contributions to the industry.
- Meta
Rust is a primarily supported server-side language in Meta for its ability to provide performance-sensitive backend services. Meta-child company Facebook has since adopted Rust and became one of the members of the Rust Foundation. The early use of Rust on Facebook is where the team rewrote the Mononoke.
## Why do companies like Rust
1. Efficient Memory Management and Safety
Companies like Rust's memory management. It improves software application performance and effectively manages memory. Due to the low risk of memory-related issues, companies can save resources by implementing costly maintenance. Memory safety is guaranteed, and sensitive data is also protected.
2. Thriving Community and Documentation
Developers contribute to and support the language daily by building frameworks and tools. These tools reduce development time and enhance productivity. Developers can easily find solutions to bugs and learn the language through documentation.
3. Cybersecurity Capabilities
Rust's memory safety helps prevent malicious attacks. Reducing security attacks and data theft ensures the company's credibility.
4. Developer Productivity
Rust-language features aid in reducing debugging time. Improvements occur in the development process and development time. Product quality is improved, and product versions can be released quickly for software applications.
## Conclusion
With the rising number of programming languages, choosing the right one for the task is necessary. Rust programming language has proven to be an efficient and reliable tool. Its distinction from other languages sets it apart, making it the most admired language eight times in a row.
This article has explored Rust as a programming language, starting with how it made it to the scene and how companies find it appealing. We learned about its unique features. We have also looked at Rust Vs. JavaScript, Rust Vs. Python, and Rust Vs. C++ how it compares to other languages, and its various applications.
We have seen how Rust’s ownership system and performance, amongst other top features, have set it above many programming languages. Rust is a top pick to build high-performance applications; however, it may not solve every software problem. However, It will continue to pave the way to breaking boundaries in software development.
| iamaamunir | |
1,888,792 | Unlocking the Power of Convex and Clerk: A Guide to Seamless Authentication and Data Management | As a web developer, discovering tools that simplify complex tasks and enhance productivity is always... | 0 | 2024-06-14T16:01:09 | https://dev.to/syedahmedullah14/unlocking-the-power-of-convex-and-clerk-a-guide-to-seamless-authentication-and-data-management-32h7 | webdev, javascript, clerk, programming | As a web developer, discovering tools that simplify complex tasks and enhance productivity is always exciting. Recently, I had the pleasure of exploring two incredible tools: Convex and Clerk. These tools are game-changers in the realms of data management and authentication. In this blog post, I’ll dive into what Convex and Clerk are, their individual benefits, and how to integrate Clerk with Convex to create seamless, authenticated web applications.
### What is Convex?
Convex is a state management and data synchronization tool that allows developers to manage application state efficiently. It provides a reactive programming model, enabling real-time updates across your application without the hassle of manual state management.
### Key Features of Convex:
Real-Time Synchronization: Convex ensures that all clients are updated in real-time whenever there is a change in the data.
Automatic Conflict Resolution: It handles conflicts gracefully, ensuring data consistency across your application.
Scalability: Convex scales effortlessly with your application, making it suitable for projects of all sizes.
Developer-Friendly API: The API is intuitive and easy to use, allowing developers to focus on building features rather than managing state.
### What is Clerk?
Clerk is an authentication and user management tool designed to provide a seamless and secure authentication experience. It simplifies integrating authentication into your application, supporting various authentication methods such as email/password, social logins, and passwordless authentication.
## Key Features of Clerk:
### Multi-Factor Authentication (MFA):
Enhance security with built-in support for MFA.
### Customizable UI Components:
Clerk offers pre-built, customizable components for login, signup, and user profile management.
### Extensive Authentication Methods:
Supports email/password, social logins (Google, Facebook, etc.), and passwordless authentication.
### Easy Integration:
Integrates seamlessly with various frameworks and libraries, reducing the complexity of adding authentication to your app.
### Integrating Clerk with Convex
Combining the power of Convex and Clerk allows developers to build robust, real-time applications with secure authentication. Here’s a step-by-step guide to integrating Clerk with Convex in a Next.js application:
### Step 1: Setting Up the Next.js Application
First, create a new Next.js application if you haven’t already:
`npx create-next-app@latest my-app
cd my-app`
### Step 2: Installing Dependencies
Next, install the necessary dependencies for Clerk and Convex:
`npm install @clerk/clerk-react convex`
### Step 3: Setting Up Clerk
### Create a Clerk Account:
Sign up for an account on Clerk’s website and create a new Clerk application.
Retrieve API Keys: Obtain your Clerk Frontend API and Backend API keys from the Clerk dashboard.
Initialize Clerk in your Next.js app: In your pages/_app.js file, wrap your application with the ClerkProvider:
```
import { ClerkProvider } from '@clerk/clerk-react';
const clerkFrontendApi = process.env.NEXT_PUBLIC_CLERK_FRONTEND_API;
function MyApp({ Component, pageProps }) {
return (
<ClerkProvider frontendApi={clerkFrontendApi}>
<Component {...pageProps} />
</ClerkProvider>
);
}
export default MyApp;
```
4. Create Clerk Components: Add the Sign-in and Sign-up components where necessary in your application. For example, in pages/index.js:
```
import { SignIn, SignUp } from '@clerk/clerk-react';
export default function Home() {
return (
<div>
<h1>Welcome to My App</h1>
<SignIn />
<SignUp />
</div>
);
}
```
### Step 4: Setting Up Convex
Create a Convex Project: Sign up for Convex and create a new project on their [dashboard](https://www.convex.dev/).
Retrieve Convex Deployment URL: Obtain your deployment URL from the Convex dashboard.
Initialize Convex in your Next.js app: Create a new file convex.js to initialize Convex:
```
import { ConvexProviderWithAuth } from 'convex/react';
import { useSession } from '@clerk/clerk-react';
import convex from 'convex';
const convexDeploymentUrl = process.env.NEXT_PUBLIC_CONVEX_DEPLOYMENT_URL;
function ConvexWithClerkProvider({ children }) {
const { sessionId } = useSession();
return (
<ConvexProviderWithAuth
deployment={convexDeploymentUrl}
auth={sessionId}
>
{children}
</ConvexProviderWithAuth>
);
}
export default ConvexWithClerkProvider;
```
4. Wrap your application with the Convex provider: Update your pages/_app.js file to include the ConvexWithClerkProvider:
```
mport ConvexWithClerkProvider from '../convex';
function MyApp({ Component, pageProps }) {
return (
<ClerkProvider frontendApi={clerkFrontendApi}>
<ConvexWithClerkProvider>
<Component {...pageProps} />
</ConvexWithClerkProvider>
</ClerkProvider>
);
}
export default MyApp;
```
Step 5: Using Convex and Clerk Together
Now you can use Convex’s reactive data and Clerk’s authentication in your components. Here’s an example of how to fetch user-specific data:
```
import { useQuery } from 'convex/react';
import { useUser } from '@clerk/clerk-react';
function UserProfile() {
const { user } = useUser();
const userId = user.id;
const userData = useQuery('getUserData', { userId });
if (!userData) return <div>Loading...</div>;
return (
<div>
<h1>Welcome, {userData.name}!</h1>
<p>Email: {userData.email}</p>
</div>
);
}
export default UserProfile;
```
---
## Conclusion
---
Integrating Clerk with Convex in a Next.js application brings the best of both worlds: secure, easy-to-implement authentication and real-time data synchronization. These tools streamline the development process, allowing you to focus on building dynamic, user-friendly applications.
By leveraging Convex's state management and Clerk's authentication capabilities, you can create scalable and secure web applications with minimal effort. Happy coding!
---
I hope this guide helps you get started with Convex and Clerk. If you have any questions or need further assistance, feel free to reach out or leave a comment below. | syedahmedullah14 |
1,888,791 | The Essential Roles of Autonomous Agents in Modern API Integration | Seamless API integration is crucial for efficient and innovative business operations. Recent... | 0 | 2024-06-14T15:57:04 | https://dev.to/apidna/the-essential-roles-of-autonomous-agents-in-modern-api-integration-5b9m | webdev, programming, api, automation | Seamless API integration is crucial for efficient and innovative business operations.
Recent developments in autonomous agents have helped streamline complex processes, and enable businesses to effortlessly connect various services and systems without the need for extensive manual intervention.
At APIDNA, we have recently launched our new autonomous agent powered API integration platform, after very positive beta testing feedback.
In this article, we will discuss the various autonomous agents that are utilised in our new platform, and how they come together to provide a seamless integration experience.
If you’re interested in trying out our new platform, [click here](https://apidna.ai/) to begin your simplified API integration journey!
## Integration Agents
Integration Agents are designed to seamlessly connect various service providers to your application.
They support standard API documentation formats such as Postman collections and OpenAPI specifications.
These agents can automatically read API documentation from Postman collections or OpenAPI specifications, understanding the endpoints, request/response formats, and authentication methods.
The Integration Agent begins by loading and then reading the API documentation file, which is typically in JSON or YAML format, to understand its structure and contents.
The agent identifies all the API endpoints defined in the documentation.
An endpoint is typically characterised by a URL path and an HTTP method (GET, POST, PUT, DELETE, etc.), which you can learn more about from our [previous article here](https://apidna.ai/api-endpoints-a-beginners-guide/).
The agent extracts information about the parameters required for each endpoint. This includes query parameters, path parameters, headers, and body content.
It identifies the data types and formats for each parameter, ensuring that requests are correctly structured.
The agent identifies the possible response codes (e.g., 200, 404, 500) for each endpoint.
It parses the structure of the response bodies, noting the expected data types and formats for successful responses and error messages.
If the API requires API keys for authentication, the agent extracts details about how the key should be included in requests (e.g., as a query parameter or header).
The agent can manage tokens, including generating tokens when needed and ensuring they are included in subsequent requests.
The agent performs initial tests by making sample requests to each endpoint to ensure they are correctly set up and operational.
It validates the responses against the expected formats to ensure data integrity and correctness.
## Mapping Agents
By leveraging existing software and intelligent algorithms, Mapping Agents eliminate the need for manual coding, significantly reducing the time and effort required for integration.
They utilise Natural Language Processing (NLP) to understand and automate the mapping process.
Using advanced NLP techniques, these agents analyse the structure and semantics of the data from various APIs to create accurate mappings between different data formats.
They map incoming requests and outgoing responses to the appropriate fields in your application, ensuring that data is correctly interpreted and processed.
These NLP techniques include:
- **Named Entity Recognition (NER):** Mapping agents use NER to recognize and categorise data fields like customer names, addresses, and transaction amounts, facilitating accurate data mapping between APIs.
- **Semantic Similarity:** Helps mapping agents to align fields from different APIs that have similar meanings but different labels, such as “email” and “contact_email” or “phone_number” and “contact_number”.
- **Part-of-Speech Tagging (POS Tagging):** Assists in understanding the context and role of each word in a dataset, aiding in the precise mapping of data fields by determining their functions within API responses or requests.
- **Dependency Parsing:** Mapping agents use dependency parsing to comprehend complex data structures and relationships within JSON or XML responses, ensuring correct mapping of nested fields.
- **Tokenization:** Enables mapping agents to break down complex field names or descriptions into manageable parts for better analysis and matching of data fields.
## Data Handling Agents
Data Handling Agents ensure that your data is consistently accurate and up-to-date by automating data population tasks.
These agents automate the extraction, transformation, and loading (ETL) processes, handling large volumes of data with precision:
- **Extraction:** Data Handling Agents can connect to various data sources, such as databases, third-party APIs, file systems, and cloud storage services. They use predefined API endpoints and queries to retrieve the required data from these sources. To handle large volumes of data, agents fetch data in batches or chunks, reducing the load on the source systems and ensuring efficient data transfer. They use pagination or other batch processing techniques to systematically retrieve data.
- **Transformation:** They perform data cleaning tasks such as removing duplicates, handling missing values, and correcting errors. Normalisation involves converting data into a consistent format, such as standardising date formats or unit conversions. Agents map data fields from the source format to the destination schema. Additional information can be added to the data during transformation. You can learn more about data transformations by checking out our [previous article here](https://apidna.ai/data-transformation-in-api-integrations/).
- **Loading:** They establish connections to target systems such as data warehouses, databases, or other storage solutions. The agents use secure methods to transfer data, ensuring the integrity and confidentiality of the data are maintained during transit. For real-time or near-real-time integration, they support incremental loading, which involves only transferring changes since the last load. Data Handling Agents verify that the loaded data matches the transformed data, ensuring accuracy and completeness. They use techniques such as checksums or hash comparisons to validate data integrity.
They continuously monitor and update data, ensuring that the information used across your integrated systems is current and accurate.
## Code Generation Agents
Code Generation Agents expedite the development process by producing ready-to-use code tailored to your specific integration needs.
They utilise predefined templates and patterns to ensure that the generated code adheres to best practices and standards.
These agents analyse the integration requirements determined by the integration agents.
For each endpoint, these agents generate code snippets that define the necessary HTTP methods and handle request parameters and responses.
They ensure that the code correctly formats requests and processes responses according to the API specifications.
Code snippets for handling authentication mechanisms (e.g., OAuth 2.0, API keys) are generated.
These snippets ensure that authentication tokens are correctly managed and included in API requests.
Code snippets include error handling routines to manage common issues such as timeouts, invalid responses, and authentication failures.
This ensures robust integration and improves application resilience, which you can learn more about from our [previous article here](https://apidna.ai/api-error-handling-techniques-and-best-practices/).
Configuration files are essential for setting up and managing integrations.
Code Generation Agents automate the creation of these files based on the requirements.
They define environment-specific settings such as API base URLs, authentication credentials, and other parameters.
They enable seamless switching between development, staging, and production environments.
Agents generate configuration files that specify necessary dependencies, such as libraries and packages required for the integration.
This ensures that all dependencies are correctly installed and managed.
Code Generation Agents also create scripts that automate various tasks involved in the integration process.
These scripts automate tasks such as code compilation, testing, and deployment to servers or cloud platforms.
Agents also create scripts to automate repetitive tasks such as data synchronisation, API request scheduling, and monitoring.
This reduces manual effort and ensures consistent execution of integration tasks.
## Server-Side Agents
Server-Side Agents manage API changes, ensuring a seamless transition and maintaining control over integrated endpoints.
They provide developers with tools to control and monitor the integrated endpoints, ensuring that the system remains stable and responsive during transitions.
These agents use polling mechanisms to regularly check for updates in the API documentation of connected services.
The agents employ sophisticated comparison algorithms to detect differences between the current and previous versions of the API documentation.
They look for changes in endpoint structures, parameter lists, response formats, authentication methods, and other critical components.
Upon detecting changes, the agents generate automated alerts and notifications to inform developers about the modifications.
The agents provide detailed reports outlining the specific changes detected, such as new endpoints, parameter modifications, or deprecations.
For minor changes that do not require manual intervention, Server-Side Agents can automatically update the integration configurations.
This includes updating endpoint URLs, adjusting parameter mappings, or modifying request/response handling logic.
After making adjustments, the agents run automated tests to ensure that the integration continues to function correctly.
## Conclusion
By developing and bringing together Integration Agents, Mapping Agents, Data Handling Agents, Code Generation, and Server-Side Agents, we have set a new standard for API integration platforms.
We will look to continue innovating, and exploring more ways that autonomous agents can be leveraged to improve the API integration experience.
Explore the article below to learn more about the fascinating technology of autonomous agents.
## Further Reading
[Autonomous Agents – ScienceDirect](https://www.sciencedirect.com/topics/computer-science/autonomous-agent) | itsrorymurphy |
1,888,788 | How to transfer data between tabs using a Chrome extension | In today’s interconnected web, it’s common to need communication between different browser tabs, even... | 0 | 2024-06-14T15:55:27 | https://dev.to/bhaskar_sawant/how-to-transfer-data-between-tabs-using-a-chrome-extension-1ghn | typescript, softwareengineering, webdev, chrome | In today’s interconnected web, it’s common to need communication between different browser tabs, even if they come from different origins. Chrome extensions and the postMessage API make it easy to transfer data between tabs. You can create a Chrome extension using TypeScript to facilitate cross-origin communication. In this guide, I’ll show you how.
### **What You Will Learn**
* Setting up a basic Chrome extension with TypeScript.
* Using postMessage API for cross-origin communication.
### **Setting up a basic Chrome extension with TypeScript.**
First, let’s set up a basic Chrome extension project with TypeScript.
Follow these steps:
**1\. Create the Project Structure**
I’ll be using this project structure throughout this project.
```css
my-chrome-extension/
├── src/
│ ├── background.ts
│ ├── content.ts
├── manifest.json
├── tsconfig.json
└── package.json
```
**2\. Initialize the**`package.json`**and set up TypeScript.**
Enter the following commands in your terminal.
```powershell
npm init -y
npm install typescript --save-dev
```
Configure TypeScript by adding the following to `tsconfig.json` .
```json
{
"compilerOptions": {
"target": "ES6",
"module": "commonjs",
"outDir": "./dist",
"strict": true,
"esModuleInterop": true
},
"include": ["src"]
}
```
**3\. Configure**`manifest.json`**.**
Create a file named `manifest.json` and add the following to configure the manifest.
This is the configuration file of your Chrome Extension.
```json
{
"manifest_version": 3,
"name": "My Chrome Extension",
"version": "1.0",
"background": {
"service_worker": "background.js",
"type": "module"
},
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["content.js"],
"run_at": "document_start"
}
],
"permissions": ["tabs"]
}
```
**4\. Create service\_worker and content script.**
Create `src/background.ts` in the folder structure, this will be the service worker of your Chrome Extension, it will keep running in the background.
Create `src/content.ts` in the folder structure, this will be the content script of your Chrome Extension, it gets loaded in every active tab in your browser. Add the following code to the `content.ts` .
```typescript
document.addEventListener('DOMContentLoaded', () => {
console.log('content.ts loaded');
});
```
**5\. Update**`package.json`**Script to build your Extension.**
```json
"scripts": {
"build": "tsc && cp manifest.json dist/"
},
```
Now enter `npm run build` in your terminal to build the Chrome Extension.
**6\. Load the Extension in Chrome.**
* **Open Chrome and navigate to the Extensions page:** Type `chrome://extensions/` in the address bar and press Enter.
* **Enable Developer Mode:** Toggle the switch on the top right to enable Developer Mode.
* **Load Unpacked Extension:** Click on the “Load unpacked” button and select the `dist` folder of your project.
Your extension should be loaded, and the manifest, background script, and content script should be correctly set up.
To confirm open a tab, open the developer tools of your browser and click on the console tab, there you’ll see the console log which we wrote in the `content.ts` .
This way you can create a simple Chrome Extension.
### **Using postMessage API for cross-origin communication.**
Now let us see how we can communicate between multiple tabs using postMessage API.
This tab inter-communication works not exactly but on a type of basic **PubSub** architecture in which `background.ts` which is our service worker works as a **publisher** and `content.ts` which our content script works as a **subscriber**.
When we send a message from one tab to the content script of that tab the content script forwards that message to the service worker and then the service worker forwards that message to the content script of all other active tabs.
Now, let’s code this up. 😄
**1\. Add Chrome types in the TypeScript project.**
To use Chrome API in the TypeScript project we need to install the following package.
```powershell
npm i @types/chrome
```
**2\. Set up the Content Script.**
The content script will listen for the messages from the tab and send them to the background script then the background script will forward the messages to the content scripts of all other active tabs and then the content script will forward the message received from the background script to the tab.
```typescript
//content.ts :
document.addEventListener("DOMContentLoaded", () => {console.log("Hello from content script")});
//this will listen to the message from the tab and send it to the background script
window.addEventListener("message", (event) => {
if (event.source !== window || !event.data.type) return;
const {type, data} = event.data;
if (type === "FROM_TAB") {
chrome.runtime.sendMessage({ type: "FROM_TAB", data });
}
});
//this will listen to the message from the background script and send it to the tab
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
const { type, data } = message;
if (message.type === "TO_TAB") {
console.log("content script sending message to tab", message.data);
window.postMessage({type:'FROM_CONTENT', data}, '*');
}
});
```
**3\. Set up the background script (service worker).**
```typescript
//background.ts :
//this will listen to the message from the content script and send it to
//the content scripts of all the active tabs
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
const {type, data} = message.data
if (message.type === 'FROM_TAB') {
chrome.tabs.query({}, (tabs) => {
tabs.forEach(tab => {
if (tab.id && tab.id !== sender.tab?.id) {
chrome.tabs.sendMessage(tab.id, { type: 'TO_TAB', data });
}
});
});
}
});
```
Now save all the files and enter `npm run build` in your terminal to build the Chrome Extension.
Now go to the Extensions tab and refresh your extension.
To test this out will create a simple HTML page.
```xml
<!-- index.-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h2>Waiting for messages:</h2><br />
<p id="texts"></p>
</body>
<script>
let texts = document.getElementById('texts');
window.addEventListener('message', (event) => {
const {type, data} = event.data;
if (type === "FROM_CONTENT") {
console.log(event.data);
texts.innerHTML += data + '<br />';
}
});
</script>
</html>
```
This will listen to all messages and print them on the screen. you can use plugins like **Live Server** to start this HTML file.
Let’s see this in action. 😄
{% embed https://vimeo.com/957731724?share=copy %}
By following this guide, you’ve learned how to set up a Chrome extension with TypeScript and enable seamless cross-origin communication between tabs using the `postMessage` API. This powerful setup allows for a richer, more interconnected user experience across different browser tabs. using postMessage API you can achieve things like scrapping, messaging and many more.
### **Follow Me for More Insights**
If you found this guide helpful and want to learn more about web development, Software Engineering, and other exciting tech topics, follow me here on Medium. I regularly share tutorials, insights, and tips to help you become a better developer. Let’s connect and grow together in this journey of continuous learning!
### **Connect with Me**
* **Twitter**: [https://twitter.com/Bhaskar\_Sawant\_](https://twitter.com/Bhaskar_Sawant_)
* **LinkedIn**: [https://www.linkedin.com/in/bhaskar-sawant/](https://www.linkedin.com/in/bhaskar-sawant/)
* **GitHub**: [https://github.com/bhaskarcsawant](https://github.com/bhaskarcsawant)
Stay tuned for more articles, and feel free to reach out if you have any questions or suggestions for future topics.
Cheers, thanks for reading! 😊
**Happy coding!** 🚀
*This article was originally published on Medium*. It is also available on *Hashnode and Dev.to .* | bhaskar_sawant |
1,888,347 | HTML QUESTION AND ANSWER | Question1:What is the full meaning of HTML? Answer:HTML means Hyper Text Markup... | 0 | 2024-06-14T15:56:14 | https://dev.to/samweb281/html-question-and-answer-33nm |
**Question1:**What is the full meaning of **HTML**? **Answer:**HTML means Hyper Text Markup Language
**Question2:**What does it mean?
**Answer:**It is the computer language that is used to create and display pages on the internet.
**Question3:**What are **"HTML tags"**?
**Answer:**These are used for placing elements in the correct order.
**Question4:**What are the types of **"HTML tags"**? **"Answer"**We have 2 types of tags namely:
**1**Opening tags
**2**Closing tags
**Question5:Types of html tags
Answer5:1.alt
2.li
3.ol
4.ul
5.h3
Question6:Ordered list in HTML
Answer 6: this takes the form ol and is used to make list in numbered form.
Question7:Unordered list in HTML
ANSWER7:Unordered list-this takes form in ul and is used to make the list in bulleted form.
Question 8:Definition list in HTML.
Answer 8: This takes form dl,dt,dd tags and elements are displayed in definition form like a dictionary
| samweb281 | |
1,885,017 | Step by Step Guide to Deploying and Connecting Window Virtual Machine in Azure | Contents What is Azure Virtual Machine How to Deploy Virtual Machines in Azure Step 1:... | 0 | 2024-06-14T15:56:00 | https://dev.to/celestina_odili/step-by-step-guide-to-deploying-and-connecting-to-azure-virtual-machine-c7d | cloudpractitioner, azure, microsoft, cloud | ##Contents <a name="Content"></a>
[What is Azure Virtual Machine] (#azure_VM)
[How to Deploy Virtual Machines in Azure] (#Deploy)
Step 1: Sign in to Azure Portal
Step 2: Create a Virtual machine
Step 3: Configure the Virtual Machine Basics
Step 4: Configure other Settings(optional)
Step 5: Review and Create (Deploy) the Virtual Machine
[How to connect to a Virtual Machine in Azure] (#connect-VM)
Step 1: Sign in to Azure Portal
Step 2: Locate the virtual machine
Step 3: Step 3: Connect using the port selected while creating the VM
### What is Azure Virtual Machine <a name="azure_VM"></a>
[Back to contents] (#Content)
Azure virtual machines (VMs) are simulations of physical computer. They enable you to create dedicated compute resources in minutes which can be used just like a physical desktop or server machine. Azure VMs can be defined and deployed in several ways: The Azure portal, a script (using the Azure CLI or Azure PowerShell) or through an Azure Resource Manager template. This guide is through azure portals
### How to Deploy Virtual Machines in Azure <a name="Deploy"></a>
[Back to contents] (#Content)
####Step1: Sign in to Azure Portal
Go to portal.azure.com and sign in with your email and password if you have already signed up.
![Image description] (https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7jsfhd1rqc0scyxjm3mc.jpg). Otherwise sign up first to create an account and subscription. Click [here] (https://dev.to/celestina_odili/core-architectural-components-of-azure-3mk7) for details on subscription and sign up.
####Step 2: Create a Virtual machine
Once sign in is successful, you can create any needed resource. On the Home page Click on "Create a resource", select Virtual Machine and click create. Other ways to achieve this include clicking on virtual machine directly or use the search bar to search for virtual machine.
![Image description] (https://dev-to-uploads.s3.amazonaws.com/uploads/articles/tghveph52tu28k88hry6.jpg)
####Step 3: Configure the Virtual Machine Basics.
For the basics tab, fill the basic setting of your VM. Select subscription, resource group or create a new one if you wish.
Follow the suggested naming convention and give and appropriate name to your VM. Here I choose ABC-Project as my VM name. select the region and availability options. Set the security type and
Choose the Image (The type and version of the OS) you want. Azure allow only Linus or windows OS. Pick a VM size based on the required CPU, memory, and storage. Set up administrator account by Creating username and password. This password will be used to connect to the VM after deployment. So, it is important you note the password. Configure networking, allow public inbound ports selection to Choose a suitable port option. Choosing SSH will enable connection to your VM through IP address while choosing RDP (Remote desktop Protocol) will enable connection through remote desktop connection. For my ABC-Project, I choose RDP3389. Finally, you need to Confirm licensing before you can proceed.
![Image description] (https://dev-to-uploads.s3.amazonaws.com/uploads/articles/q1w7s1mmwttir2upmagz.jpg)
####Step 4: Configure other Settings(optional)
You can customize the other tabs or apply their default settings. In ABC-Project, the default setting was used. The tabs include:
- Disks
- Networking
- Management
- Monitoring
- Advanced
- Tags
####Step 5: Review and Create (Deploy) the Virtual Machine
On the review and create tab, review all your configuration and click on create to deploy the VM. If all the parameters are properly set, it will be verified, and the deployment process will start. Wait for the deployment process to complete and your VM is created. However, if it did not pass the verification, you will be notified about the error. Always read your notification because it usually points to the error and suggest the fix.
###How to Connect to a virtual machine <a name="connect-VM"></a>
[Back to contents] (#Content)
####Step 1: Sign in to Azure Portal.
If you did not logout after deploying the VM, skip this step
####Step 2: Locate the virtual machine.
To locate the VM, search for virtual machine from the search bar and click on it. Then Click the VM name (ABC-Project) to open it and click on connect. Alternatively, you could click "go to resource" from the notification bar especially if you just deployed the VM. This will take you straight to the exact resource it is pointing to.
####Step 3: Connect using the port selected while creating the VM.
For RDP port, download the RPD file, open the file, Check
"don’t ask me again for connection to this computer" in the pop menu and click connect. Input the password created during the set-up stage of the VM deployment when prompted for password. When alerted for certification verification, do not verify. Click yes to continue and wait for it to connect. Once connected, your VM is ready for use. you can Work on the VM like you would on a physical PC. Meanwhile basic Pc configuration should be done when connecting to the VM for the first time.
| celestina_odili |
1,888,790 | java jdbc modules | Conclusion As we’ve seen now, there are several API’s and abstractions. Here’s a short list of what... | 0 | 2024-06-14T15:55:40 | https://dev.to/mustafacam/java-jdbc-modules-fng |
Conclusion
As we’ve seen now, there are several API’s and abstractions. Here’s a short list of what we covered:
**JDBC API**: The JDBC API is a low-level API to execute SQL queries on a database.
**JDBC Driver**: Each database vendor has to implement the JDBC API to allow connecting to their database. This library is called a JDBC driver.
**Connection pool**: On top of the JDBC API, there are also a few libraries that provide a generic JDBC DataSource that provides connection **pooling**. The default for Spring Boot is HikariCP.
**Spring JDBC**: Spring JDBC is a wrapper on top of the JDBC API to make it easier to write and execute queries.
**JPA**: JPA is a specification for Object-Relational Mapping in Java. It is part of Jakarta EE.
**Hibernate**: Hibernate is a library that implemented the JPA specification. It’s the default JPA implementation for Spring Boot.
**Spring Data**: Spring Data is an umbrella project that descibes how database interactions can happen through their repository API.
**Spring Data JPA**: This is an implementation of Spring Data on top of JPA.
**Spring Data JDBC**: This is an implementation of Spring Data on top of Spring JDBC. It comes with its own lightweight ORM framework. | mustafacam | |
1,888,789 | One Byte Explainer - The Nibble | This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer. ... | 0 | 2024-06-14T15:55:31 | https://dev.to/rafajrg21/one-byte-explainer-the-nibble-lp6 | devchallenge, cschallenge, computerscience, beginners | *This is a submission for [DEV Computer Science Challenge v24.06.12: One Byte Explainer](https://dev.to/challenges/cs).*
## Explainer
Half a byte. Is a small unit of information used for more efficient use of memory & processing power when resources are limited.
## Additional Context
You could call this one a One Nibble Explainer
| rafajrg21 |
1,864,934 | My Wins of the Week! 🪄 | 📰 I published a new post on DEV! ✨ Are Certificates From... | 0 | 2024-06-14T15:39:10 | https://dev.to/anitaolsen/my-wins-of-the-week-57hp | weeklyretro | <a href="https://www.glitter-graphics.com"><img src="http://dl10.glitter-graphics.net/pub/1527/1527890k6wfbn5d95.gif" width=550 height=30 border=0></a>
📰 I published a new post on DEV! ✨
{% embed https://dev.to/anitaolsen/are-certificates-from-code-learning-websites-worth-anything-3loh %}
💟 I received two new badges on DEV! ✨
🎯 I met my weekly target on [Codecademy](https://www.codecademy.com/profiles/AnitaOlsen)! ✨
_I have been active on the Learn Intermediate Python 3: Object-Oriented Programming course._
💻 I finished the [30-Day Challenge](https://www.codecademy.com/30daychallenge) on Codecademy! ✨
_I completed all the PRO projects from the Learn HTML course, some of the lessons from the Learn Color Design PRO course, the whole Introduction To Ethical Hacking PRO course, the PRO lessons from the Learn Python 2 course and a little from the Learn Python 3 PRO course._
💻 I made a [page](https://anitaolsen.w3spaces.com/) with [W3Schools](https://www.w3profile.com/anitaolsen) Spaces! ✨
💻 I completed my first four quizzes on the HTML course on W3Schools! ✨
💻 I completed seven singleplayer levels on [CodeCombat](https://codecombat.com/user/anitaolsen)! ✨
I also earned the following achievements:
💻 I completed the whole tutorial in [JOY OF PROGRAMMING - Software Engineering Simulator](https://store.steampowered.com/app/2216770/JOY_OF_PROGRAMMING__Software_Engineering_Simulator/) on [Steam](https://steamcommunity.com/id/callmeadiah/) ✨
📜 I also received a certificate in JOY OF PROGRAMMING - Software Engineering Simulator on Steam! ✨
<a href="https://www.glitter-graphics.com"><img src="http://dl10.glitter-graphics.net/pub/1527/1527890k6wfbn5d95.gif" width=550 height=30 border=0></a>
<center>☆.•°Remember💡</center>
<center>Thank you for reading! ♡</center>
| anitaolsen |
1,888,787 | Mastering Type Guards in TypeScript: Ensuring Safe Type Checks | TypeScript is a powerful language that adds static types to JavaScript, enabling developers to write... | 0 | 2024-06-14T15:55:03 | https://dev.to/geraldhamiltonwicks/mastering-type-guards-in-typescript-ensuring-safe-type-checks-2ap0 | typescript, webdev, javascript, programming | TypeScript is a powerful language that adds static types to JavaScript, enabling developers to write safer and more maintainable code. One of the key features that enhance TypeScript’s robustness is type guards. Type guards allow us to narrow down the type of a variable within a conditional block, providing better type safety and reducing runtime errors. In this article, we will explore various custom type guards and demonstrate how they can be used to ensure safe type checks in TypeScript.
#### Understanding Type Guards
Type guards are functions or expressions that perform runtime checks to determine if a variable is of a specific type. When a type guard function returns `true`, TypeScript understands that the variable has the specific type within that scope.
### Creating Custom Type Guards
Let's create custom type guards for common types and scenarios, demonstrating their usage with practical examples.
#### Checking for `undefined`
The `isUndefined` type guard checks if a value is `undefined`.
```typescript
// isUndefined.ts
export function isUndefined(value: unknown): value is undefined {
return value === undefined;
}
var x: null | undefined;
if (isUndefined(x)) {
const y = x; // y: undefined
} else {
const z = x; // z: null
}
```
In this example, `isUndefined` helps us narrow down the type of `x` to `undefined` or `null`.
#### Checking for `null`
The `isNull` type guard checks if a value is `null`.
```typescript
// isNull.ts
export function isNull(value: unknown): value is null {
return value === null;
}
var x: null | undefined;
if (isNull(x)) {
const y = x; // y: null
} else {
const z = x; // z: undefined
}
```
Here, `isNull` helps us determine whether `x` is `null` or `undefined`.
#### Checking for `number`
The `isNumber` type guard checks if a value is a `number`.
```typescript
// isNumber.ts
import { getStringOrNumberRandomly } from "./helpers";
export function isNumber(value: unknown): value is number {
return typeof value === "number";
}
var data: string | number = getStringOrNumberRandomly();
if (isNumber(data)) {
const y = data; // y: number
} else {
const z = data; // z: string
}
```
In this case, `isNumber` ensures that `data` is either a `number` or a `string`.
#### Checking for `string`
The `isString` type guard checks if a value is a `string`.
```typescript
// isString.ts
import { getStringOrNumberRandomly } from "./helpers";
export function isString(value: unknown): value is string {
return typeof value === "string";
}
var data: string | number = getStringOrNumberRandomly();
if (isString(data)) {
const y = data; // y: string
} else {
const z = data; // z: number
}
```
Here, `isString` confirms that `data` is either a `string` or a `number`.
#### Checking for a Complex Type
The `isPerson` type guard checks if an object conforms to the `Person` interface. This type guard leverages the previously created type guards (`isString`, `isNumber`, `isNull`) to validate the structure of a more complex object.
```typescript
// isPerson.ts
import { isNull } from "./isNull";
import { isNumber } from "./isNumber";
import { isString } from "./isString";
type Person = {
name: string,
age: number,
email: string | null
}
function isPerson(rawValue: unknown): rawValue is Person {
const value = rawValue as Person;
return (
isString(value.name) &&
isNumber(value.age) &&
(isString(value.email) || isNull(value.email))
);
}
const person: any = {
name: 'Harry',
age: 17,
email: null
}
if (isPerson(person)) {
const y = person; // y: Person
} else {
const z = person; // z: any
}
```
The `isPerson` type guard validates whether an object meets the structure of the `Person` type. By using the `isString`, `isNumber`, and `isNull` type guards, `isPerson` checks if `name` is a string, `age` is a number, and `email` is either a string or null. This composite type guard ensures that all properties of the `Person` object are correctly typed.
In this example, `isPerson` helps us confirm that an object adheres to the expected `Person` interface, allowing TypeScript to understand the exact structure and types of the object's properties within the conditional block.
### Conclusion
Type guards in TypeScript provide a powerful way to ensure type safety and improve code reliability. By creating custom type guards, you can handle complex type checks efficiently and avoid common pitfalls associated with dynamic types. Leveraging these techniques will help you write cleaner, more maintainable code, ultimately leading to more robust applications.
| geraldhamiltonwicks |
1,888,978 | Shuffling the Deck: Learning Loops and Nested Loops in JavaScript | I’ve been diving into the world of JavaScript and having a blast revisitinvg different programming... | 0 | 2024-06-14T20:56:12 | https://medium.com/@rkconnections/shuffling-the-deck-learning-loops-and-nested-loops-in-javascript-f81cdc2f5d79 | ---
title: Shuffling the Deck: Learning Loops and Nested Loops in JavaScript
published: true
date: 2024-06-14 15:54:55 UTC
tags:
canonical_url: https://medium.com/@rkconnections/shuffling-the-deck-learning-loops-and-nested-loops-in-javascript-f81cdc2f5d79
---
I’ve been diving into the world of JavaScript and having a blast revisitinvg different programming concepts. One particularly interesting and important topic has been loops and nested loops, which allow you to automate repetitive tasks and work with complex data structures.
To put these concepts into practice, our class decided to create a fun project that simulates shuffling a deck of cards and dealing a poker hand. It’s a great way to see how loops and nested loops can be used to generate and manipulate data in a practical scenario.
Let’s take a closer look at the code and break down what’s happening:
```
const kinds = ["2", "3", "4", "5", "6", "7", "8", "9", "10", "Jack", "Queen", "King", "Ace"];
const suits = ["Diamonds", "Hearts", "Spades", "Clubs"];
const deck = [];
```
First, we define two arrays: `kinds` represents the different card values (2–10, Jack, Queen, King, Ace), and `suits` contains the four suits (Diamonds, Hearts, Spades, Clubs). We also initialize an empty `deck` array to store our generated cards.
```
for (let i = 0; i < kinds.length; i++) {
for (let j = 0; j < suits.length; j++) {
const card = {
suit: suits[j],
kind: kinds[i],
name: kinds[i] + " of " + suits[j],
fileName: kinds[i] + "-of-" + suits[j] + '.png',
value: kinds[i] === "Jack" || kinds[i] === "Queen" || kinds[i] === "King" ? '10' :
kinds[i] === "Ace" ? '11' : kinds[i]
};
deck.push(card);
}
}
```
Here’s where the magic happens! We use a nested loop to generate all possible combinations of card kinds and suits. The outer loop iterates over the `kinds` array, while the inner loop iterates over the `suits` array. For each combination, we create a `card` object with properties like `suit`, `kind`, `name`, `fileName`, and `value`. The `value` property is determined based on the card kind, assigning a value of ‘10’ to face cards (Jack, Queen, King) and ‘11’ to an Ace. Finally, we push each `card` object into the `deck` array.
```
function dealCards() {
const hand = [];
const dealtCards = [];
while (hand.length < 5) {
const i = Math.floor(Math.random() * 52);
if (!dealtCards.includes(i)) {
hand.push(deck[i]);
dealtCards.push(i);
}
}
const imgs = document.querySelectorAll("img");
for (let i = 0; i < 5; i++) {
imgs[i].src = "images/" + hand[i].fileName;
}
}
```
The `dealCards` function is responsible for randomly selecting five cards from the `deck` array to form a poker hand. We use a `while` loop to keep selecting random cards until we have a hand of five unique cards. The `Math.floor(Math.random() * 52)` expression generates a random index between 0 and 51 (inclusive) to select a card from the `deck`. We keep track of the dealt card indices in the `dealtCards` array to ensure we don’t deal the same card twice.
Finally, we use `querySelectorAll` to select all the `<img>` elements on the page and update their `src` attributes with the corresponding card image file names.
```
document.querySelector('button').addEventListener('click', dealCards);
```
To trigger the card dealing process, we add a click event listener to a button element. Whenever the button is clicked, the `dealCards` function is called, and a new poker hand is dealt and displayed on the page.
This project has been a fun and engaging way to explore loops, nested loops, and manipulating data with JavaScript. It’s amazing to see how a few lines of code can simulate the complex process of shuffling a deck of cards and dealing a random hand.
As I continue on my coding journey, I’m excited to tackle more challenging projects and deepen my understanding of programming concepts. The power and versatility of JavaScript never cease to amaze me, and I can’t wait to see what other exciting things I’ll be able to build!
Happy coding, everyone! Remember, every line of code is a step towards mastering the craft of programming. Keep learning, keep practicing, and most importantly, keep having fun! | rkrevolution | |
1,888,785 | ,l sd;l, | KPI Digital Solutions understands the importance of staying current with business requirements. There... | 0 | 2024-06-14T15:52:18 | https://dev.to/optirank_pro_9ce4c7e85535/l-sdl-3k93 | KPI Digital Solutions understands the importance of staying current with business requirements. There comprehensive data governance consulting services help organizations utilize their information assets effectively, driving success and progress. Partnering with KPI Digital Solutions can enhance your data quality and governance systems, unlocking your organization's full potential in the digital era. By managing data effectively, KPI Digital Solutions can help take your business to greater heights, ensuring sustained growth and competitive advantage.
KPI Digital Solutions understands the importance of staying current with business requirements. There comprehensive data governance consulting services help organizations utilize their information assets effectively, driving success and progress. Partnering with KPI Digital Solutions can enhance your data quality and governance systems, unlocking your organization's full potential in the digital era. By managing data effectively, KPI Digital Solutions can help take your business to greater heights, ensuring sustained growth and competitive advantage.
| optirank_pro_9ce4c7e85535 | |
1,888,784 | Linux and Git-GitHub Cheat Sheet | here's a basic Linux file system commands cheat sheet: Navigating the File System: pwd: Print... | 0 | 2024-06-14T15:51:33 | https://dev.to/oncloud7/linux-and-git-github-cheat-sheet-i93 | github, git, linux, devops | **here's a basic Linux file system commands cheat sheet:**
**Navigating the File System:**
`pwd:` Print working directory (displays the current directory).
`ls:` List files and directories.
`ls -l:` Long format, shows detailed information.
`ls -a:` List all files, including hidden files.
`ls -lh:` Long format with human-readable file sizes.
`cd:` Change directory.
`cd ..:` Move to the parent directory.
`cd ~:` Move to the home directory.
`mkdir:` Create a new directory.
`rmdir:` Remove an empty directory.
**Working with Files:**
`touch:` Create an empty file.
`cp:` Copy files or directories.
`cp source destination:` Copy a file.
`cp -r source destination:` Copy a directory recursively.
`mv:` Move or rename files or directories.
`rm:` Remove files or directories.
`rm file:` Remove a file.
`rm -r directory:` Remove a directory and its contents recursively.
`cat:` Display the contents of a file.
`more:` Display the contents of a file page by page.
`less:` Display the contents of a file with backward navigation.
`head:` Display the beginning of a file.
`tail:` Display the end of a file.
`nano or vim:` Text editors to create and edit files.
**File Permissions:**
`chmod:` Change file permissions.
`chown:` Change file ownership.
**Searching:**
`grep:` Search for a pattern in files.
`find:` Search for files and directories.
`sort:` Sort lines of text files.
`uniq:` Display or filter duplicate lines in a file.
**File Compression and Archiving:**
`tar:` Create or extract tar archives.
`tar -cvf archive.tar files:` Create a tar archive.
`tar -xvf archive.tar:` Extract files from a tar archive.
`gzip or gunzip:` Compress or decompress files.
`gzip file:` Compress a file (creates .gz file).
`gunzip file.gz:` Decompress a compressed file.
**Disk Usage:**
`df:` Display disk space usage.
`du:` Display file and directory space usage.
`du -h:` Human-readable sizes.
`du -sh directory:` Summarize directory size.
**Other:**
`ln:` Create symbolic or hard links.
`file:` Determine file type.
`mount and umount:` Mount and unmount filesystems.
**Managing Processes:**
`ps:` Display information about currently running processes.
`ps aux:` Display detailed information about all processes.
`ps -ef:` Similar to ps aux, different syntax.
`top: `Display real-time system monitoring and process information.
`htop:` Interactive version of top with more features and controls.
`pgrep:` Search for processes by name.
Example: pgrep firefox to find the process ID of the Firefox browser.
`pkill: `Terminate processes by name.
Example: pkill firefox to terminate all Firefox processes.
`kill:` Send signals to processes (commonly used with process IDs).
kill -9 PID: Forcefully terminate a process with the given process ID.
`killall:` Terminate processes by name.
Example: killall chrome to terminate all Chrome browser processes.
`nice and renice:` Adjust process priority.
`nice -n 10 command:` Run a command with a lower priority (higher niceness value).
`renice -n 5 -p PID:` Change the priority of a running process.
**Background and Foreground Execution:**
`&:` Run a command in the background.
Example: command & runs command in the background.
`jobs:` List background jobs.
`fg:` Bring a background job to the foreground.
`bg:` Resume a suspended background job.
**Process Control:**
`Ctrl+C:` Interrupt (terminate) the currently running foreground process.
`Ctrl+Z:` Suspend the currently running foreground process.
`nohup:` Run a command that keeps running even after the terminal is closed.
Example: nohup command &.
**System Monitoring and Logs:**
`uptime:` Display system uptime and load average.
`vmstat:` Display virtual memory statistics.
`dmesg:` Display kernel ring buffer (boot messages).
`sar:` Collect and display system activity information.
`iostat:` Display I/O statistics.
**Network Configuration:**
`ifconfig or ip addr:` Display network interface information.
`ifup interface_name:` Bring a network interface up.
`ifdown interface_name:` Bring a network interface down.
`ip link set interface_name up:` Another way to bring an interface up.
`ip link set interface_name down:` Another way to bring an interface down.
`ping host:` Send ICMP echo request packets to a host.
`traceroute host: `Trace the route that packets take to reach a host.
**Network Connectivity:**
`ping host:` Check network connectivity to a host.
`traceroute host:` Display the path taken by packets to reach a host.
`nslookup host:` Perform DNS lookups to retrieve IP addresses.
`dig host:` Another tool to query DNS information.
`host host:` Display DNS information.
**Networking and Transfers:**
`wget:` Download files from the internet.
`curl:` Transfer data to/from servers.
**Network Diagnostics:**
`netstat:` Display network statistics (deprecated; use ss instead).
`ss:` Display socket statistics.
`nmap host:` Perform network scanning to discover open ports and services.
`arp:` Display and manipulate the ARP cache.
`iftop:` Display bandwidth usage on an interface.
`iftop -i interface_name:` Monitor bandwidth of a specific interface.
**Firewall and Security:**
`ufw:` Uncomplicated Firewall management tool.
`iptables:` Powerful tool for configuring firewall rules.
**Package Management:**
**Debian-based Distributions (e.g., Ubuntu):**
`apt-get update:` Update the package list.
`apt-get upgrade:` Upgrade installed packages.
`apt-get install package_name:` Install a package.
`apt-get remove package_name:` Remove a package (keeps configuration files).
`apt-get purge package_name:` Completely remove a package (including configuration files).
`apt-cache search keyword:` Search for packages.
`apt-cache show package_name:` Display package information.
`dpkg -i package.deb:` Install a package from a .deb file.
`dpkg -r package_name:` Remove a package.
`dpkg -l:` List all installed packages.
**Red Hat-based Distributions (e.g., CentOS):**
`yum update: `Update installed packages.
`yum install package_name:` Install a package.
`yum remove package_name:` Remove a package.
`yum search keyword:` Search for packages.
`yum info package_name:` Display package information.
`rpm -ivh package.rpm:` Install a package from an .rpm file.
`rpm -e package_name:` Remove a package.
`rpm -qa:` List all installed packages.
**Common for Both:**
`apt (Ubuntu) / yum (CentOS):` Package managers to manage software.
`snap:` Package manager for installing and managing snap packages.
`dnf:` Modern package manager replacing yum in newer Fedora distributions.
**Git and GitHub Cheat Sheet: Key Operations**
**Cloning a Repository:**
`git clone <repository_url>: `Clone a remote repository to your local machine.
**Basic Workflow:**
**Checking Status:**
`git status:` Check the status of your working directory and staged changes.
**Adding Changes:**
`git add <file>:` Stage a specific file for commit.
`git add . or git add -A:` Stage all changes for commit.
**Committing Changes:**
`git commit -m "Your commit message":` Commit staged changes with a message.
**Pushing Changes:**
`git push origin <branch>:` Push committed changes to a remote branch.
**Branching and Merging:**
**Creating and Switching Branches:**
`git branch:` List all branches.
`git branch <new_branch>:` Create a new branch.
`git checkout <branch>:` Switch to an existing branch.
**Merging Branches:**
`git merge <branch_to_merge>:` Merge changes from another branch into the current branch.
**Pulling Changes:**
`git pull origin <branch>:` Fetch and merge remote changes into your local branch.
**Inspecting History:**
`git log:` Display commit history.
`git log --oneline:` Display compact commit history.
`git diff:` Show differences between working directory and staging area.
`git diff --staged:` Show differences between staging area and last commit.
**Remote Repositories:**
`git remote -v:` List remote repositories.
`git remote add <name> <repository_url>:` Add a new remote repository.
`git remote remove <name>: `Remove a remote repository.
`git push origin -d <branch-name> :` Delete remote branch
**Undoing Changes:**
`git reset <file>:` Unstage changes from a file.
`git checkout -- <file>:` Discard changes in a file.
`git revert <commit>:` Create a new commit that undoes changes of a previous commit.
**Resetting Commits:**
`git reset --soft <commit>:` Move the branch pointer to a specific commit, keeping changes staged.
`git reset --mixed <commit> (default behavior):` Move the branch pointer and unstage changes, preserving changes in working directory.
`git reset --hard <commit>:` Move the branch pointer, unstage changes, and discard changes in working directory.
**Ignoring Files:**
Create a `.gitignore` file in the repository to list files and patterns to be ignored.
**Renaming and Deleting:**
`git mv <old_file_name> <new_file_name>:` Rename a file.
`git rm <file>:` Delete a file.
**Remote Collaboration:**
`git clone <repository_url>:` Clone a remote repository.
`git fetch:` Fetch changes from a remote repository.
`git pull origin <branch>:` Fetch and merge remote changes.
`git push origin <branch>:` Push changes to a remote branch.
**Removing Untracked Files:**
`git clean -n:` List untracked files that will be removed.
`git clean -f:` Remove untracked files from the working directory.
**Stashing Changes:**
`git stash:` Stash your changes (both staged and unstaged).
`git stash save "message":` Stash changes with a descriptive message.
**Listing Stashes:**
`git stash list:` List all stashes with their IDs and messages.
**Applying Stashes:**
`git stash apply:` Apply the most recent stash and keep it in the stash list.
`git stash apply stash@{n}:` Apply a specific stash by its index.
**Popping Stashes:**
`git stash pop:` Apply and remove the most recent stash.
`git stash pop stash@{n}:` Apply and remove a specific stash by its index.
**Dropping Stashes:**
`git stash drop stash@{n}:` Remove a specific stash by its index.
`git stash clear:` Remove all stashes. | oncloud7 |
1,888,783 | What is Test Monitoring and Test Control? | Introduction In the realm of application testing, the ability to monitor and control the execution... | 0 | 2024-06-14T15:47:23 | https://dev.to/pcloudy_ssts/what-is-test-monitoring-and-test-control-46cb | automatedseleniumtestingt, applicationtesting, testmonitoring | Introduction
In the realm of [application testing](https://www.pcloudy.com/blogs/how-to-accelerate-app-testing-using-continuous-testing-cloud/), the ability to monitor and control the execution of your test suite is fundamental to the successful delivery of high-quality software. These essential strategies allow managers to gauge progress and make real-time adjustments to maximize efficiency and accuracy. In this comprehensive guide, we’ll delve into the definitions, mechanisms, and benefits of [test monitoring](https://www.pcloudy.com/blogs/role-of-continuous-monitoring-in-devops-pipeline/) and test control. We’ll also explore how these methodologies can enhance your testing approach, improve communication within your team, and ultimately lead to better software outcomes.
What is Test Monitoring?
At its core, test monitoring is a process in which the execution of testing activities is tracked, measured, and assessed. This continuous review allows testing professionals to gauge current progress, identify trends through analysis of testing metrics, estimate future trajectories based on test data, and provide timely feedback to all relevant parties. Test monitoring data can be collected both manually or through automated tools and is vital for assessing exit criteria like coverage.
Moreover, test monitoring is a proactive and iterative process, involving frequent reviews to guarantee that targets are met at every stage of the testing lifecycle. By comparing the current state of testing activities to the anticipated goal, test monitoring provides valuable insights into the effectiveness of the process. This feedback loop enables teams to identify potential issues early, ensuring more accurate and efficient testing outcomes.
What does test monitoring involve?
Test monitoring encompasses several activities that provide valuable feedback on the status of the test process. These activities include:
Updating the test goals achieved so far: This involves continuously monitoring the progress towards the predefined testing goals.
[Identifying and tracking relevant test data](https://www.pcloudy.com/how-to-measure-the-success-of-end-to-end-testing/): Test data forms the backbone of any monitoring activity. By identifying and tracking relevant data, teams can make informed decisions and accurate predictions.
Planning and projecting future actions: Using the data and trends observed, teams can create an action plan for the remainder of the test process.
Communicating status to relevant parties: Keeping stakeholders informed about the progress of the testing process is crucial to ensure alignment with the overall project objectives.
Key Metrics in Test Monitoring?
Test monitoring relies on a collection of key metrics to measure progress and inform decision-making. Commonly tracked metrics include:
Test case execution metrics: These metrics detail the number of test cases that have been executed, along with their outcomes (pass, fail, blocked, etc.).
Test preparation metrics: These metrics monitor the progress of test case preparation and test environment setup, highlighting potential delays or bottlenecks.
Defect metrics: These include the number of defects discovered, their severity, the rate of discovery, and the rate of resolution.
https://www.pcloudy.com/how-to-analyze-data-to-predict-your-optimum-device-test-coverage/: These metrics measure how much of the application or system under test has been covered by the test cases.
Test project cost: This includes the cost of resources, tools, and time spent in testing, as well as the potential cost of not discovering a defect.
Requirement Tracking: This ensures that each requirement has corresponding test cases and that all have been executed.
Consumption of Resources: This includes the time and human resources consumed by the project, and helps in planning and allocation of resources.
When to collect data for Test Monitoring?
The frequency and method of data collection in test monitoring depend largely on the nature and timeline of your project. In a project due to be delivered in a month, weekly data collection might be sufficient. In complex or critical projects, however, more frequent updates may be necessary to identify and respond to issues quickly.
Test data can be collected manually, by individual testers, or automatically using test management tools. Regardless of the method, ensuring accurate and timely data collection is paramount. Clear guidelines should be set for what data needs to be collected, by whom, when, and how often.
How to evaluate progress through collected data?
To accurately gauge progress, it’s beneficial to establish an evaluation plan at the beginning of the project. This plan should outline the criteria against which progress will be assessed, providing clarity for all involved.
Progress can typically be measured by comparing planned versus actual progress, and by evaluating project performance against predefined criteria. For instance, if the actual effort spent on testing exceeds the projected effort, it can be inferred that the project is progressing.
Importance of Test Monitoring:
Let’s consider a scenario to understand the significance of test monitoring. Suppose that after initial estimation and planning, the team commits to certain milestones and deadlines. Due to an unforeseen setback, the project gets delayed, causing missed milestones and deadlines. As a result, the project fails, and the client is lost.
This example illustrates that even with meticulous planning, unexpected issues can arise. Test monitoring serves as an essential early warning system to identify such deviations, allowing teams to intervene and correct the course as soon as possible.
Other benefits of test monitoring include providing a transparent view of the project status to management, enabling resource and budget adjustments as needed, and preventing significant problems by identifying and addressing minor issues early.
What is Test Control?
While test monitoring offers a clear view of the current state of testing activities, test control enables teams to take corrective actions based on the insights gained from monitoring. Essentially, test control is the process of managing and adjusting the ongoing testing activities to improve project efficiency and quality.
The test control process is initiated once the test plan is in place. A well-defined testing schedule and monitoring framework are prerequisites for effective test control. This ensures that the Test Manager can track the progress of testing activities and resources used against the plan, making adjustments as required.
Checklist for Test Control Activities
To manage and monitor your test control activities, consider the following checklist:
Review and analyze the current state of the test cycle.
Document the progress of the test cycle, including coverage and exit criteria.
Identify potential risks and develop matrices associated with those risks.
Implement corrective measures and decisions based on the data and analysis.
Why do you need Test Control?
In software development projects, it’s common for teams to encounter unexpected challenges that can hinder progress towards project deadlines. These challenges might include discrepancies in software functionality that require additional time to fix, changes in requirements and specifications based on stakeholder feedback, and unforeseen circumstances that cause delays.
In such situations, test control activities become crucial to manage these changes effectively and maintain the quality of the software.
Executing Test Control activities
The following sequential actions are fundamental to the test control process:
Reviewing and analyzing the current [state of the test cycle](https://www.pcloudy.com/blogs/all-you-need-to-know-about-automation-testing-life-cycle/): This includes the number of tests executed, the severity of the defects, the coverage of the test cases, and the number of tests passed or failed.
Observing and documenting the progress of the test cycle: Keeping the development team informed about the test status, including coverage and exit criteria, is crucial.
Identifying risks and creating associated matrices: Proactively identifying potential risks and preparing to address them helps minimize project delays and defects.
Taking corrective actions: Based on the data analysis, the team can implement corrective measures to stay on track and achieve the desired result.
These actions help the team adapt to the evolving needs of the project and ensure the testing process aligns with the project goals.
Corrective Measures in Test Control
Based on the insights gained from test monitoring reports, teams can implement several corrective measures:
Prioritizing testing efforts: Based on the criticality of the defects and areas of the application, the team can prioritize testing efforts for maximum impact.
Revising testing schedules: If testing activities are not progressing as per the planned schedule, it may be necessary to revise the timeline.
Adjusting resource allocation: If certain testing activities require more attention or manpower, resource allocation may need to be adjusted accordingly.
Changing test scope: If test coverage is not adequate or if new requirements are introduced, the test scope may need to be adjusted.
pCloudy: Elevating Test Monitoring and Control through Real Devices
In the vast realm of testing operations, a cornerstone principle resonates with undeniable clarity – all tests must be performed on real devices. This mandate is driven by the necessity for real user conditions, which ultimately infuse credibility and accuracy into Test Monitoring and Test Control. Using emulators or simulators for testing purposes, while valuable in certain scenarios, can’t replicate the precise environment that real devices offer. Hence, they invariably fall short in providing a comprehensive representation of test results. As a result, the accuracy of the Test Monitoring process might be compromised, leading to a ripple effect where the ensuing Test Control activities might not be appropriately adjusted to enhance the test cycle’s overall productivity.
Harnessing the Power of Real Device Cloud Testing
Regardless of the nature of testing, be it manual or [automated Selenium testing](https://www.pcloudy.com/blogs/understanding-selenium-the-automation-testing-tool/), the undeniable significance of real devices is non-negotiable. The pool of devices deployed for testing should encompass both the latest models such as the iPhone 14 and Google Pixel 7, and the older, still widely-used legacy devices and browsers. This is crucial because in our highly fragmented tech landscape, the specific devices and browsers used to access a website or application can be diverse and unpredictable. The broader the array of devices incorporated into your testing process, the more robust and inclusive the test results.
Confronted with the challenge of maintaining an extensive in-house device lab, the question invariably arises: should one build or buy a device lab? The demands of this conundrum become particularly acute when considering the need for an infrastructure that regularly updates with new and legacy devices and maintains the highest levels of functionality, cost-effectively.
Cloud-based testing infrastructure, such as pCloudy, is an effective solution to this quandary. pCloudy provides a comprehensive suite of 5000+ real browsers and devices that can be accessed for testing from any location worldwide, at any given time.
Reaping the Benefits of Real Device Cloud Testing with pCloudy
Embracing the pCloudy platform is a straightforward process. Users can sign up for free, select a specific device-browser-OS combination, and initiate testing immediately. This offers the ability to simulate user conditions, including factors such as network speed, battery status, geolocation changes (both local and global), viewport sizes, and screen resolutions.
By executing tests on the real device cloud, QA managers can take real user conditions into account, thereby ensuring a high degree of accuracy in test results. As Test Monitoring and Control are instrumental in sculpting a highly functional test cycle, the use of a real device cloud provides QA managers and testers a more authentic and precise set of data. This allows for better management and control in every project, thereby ensuring its success and affirming the pivotal role of real devices in Test Monitoring and Test Control.
Remember, no emulator or simulator can fully replicate the diverse and often unpredictable conditions of real user environments. Hence, real devices hold the key to a more effective and accurate testing process, and cloud-based platforms like pCloudy are leading the way in making this an accessible reality.
Conclusion
To sum up, test monitoring and control are critical for maintaining the quality of your testing process and aligning it with your project goals. By keeping an eye on key metrics and making necessary adjustments, your team can better meet project timelines, enhance the quality of the delivered software, and ensure satisfaction for all stakeholders.
Whether you’re a testing professional looking to sharpen your skills or a project manager seeking to improve your team’s performance, understanding and employing these concepts can significantly elevate your software testing outcomes.
In the ever-evolving software industry, the need for effective test monitoring and control is undeniable. So, consider this guide as your stepping stone towards more efficient, streamlined, and successful software testing endeavors.
The possibilities are endless when you’re in control of your testing process. Remember, it’s not just about preventing defects or maintaining schedules, but also about driving forward towards your goals, with your team, and delivering high-quality software to your end-users. And that is where test monitoring and control shine the brightest. | pcloudy_ssts |
1,888,756 | HTML TAGS | Question1:What is the full meaning of HTML? Answer:HTML means Hyper Text Markup... | 0 | 2024-06-14T15:46:30 | https://dev.to/michweb/html-tags-2h3o | **Question1:**What is the full meaning of **HTML**?
**Answer:**_HTML means Hyper Text Markup Language_
**Question2:**What does it mean?
**Answer:**_It is the computer language that is used to create and display pages on the internet_.
**Question3:**What are **"HTML tags"**?
**Answer:**These are used to place elements in the proper format.Tags also use symbols<,>.
**Question4:**What are the form of **"HTML tags"**?
**Answer:**We have 2 types of tags namely:
**1**Opening tags
**2**Closing tags
**Question5:**What are the types of opening tags?
**Answer:**h1,h2,h3,p,a,etc.
**Question6:**What are the types of closing tags?
**Answer:**h1,h2,h3,a,p.etc.
**Question7:**What is the difference between opening and closing tag?
**Answer**Opening tags don't have a slash while closing tags have a slash.
**Question8:**What are the list types in HTML?
**Answer:**Ordered list and un ordered list.
**Question9:**What is order list?
**Answer:**This takes the form of ol.
**Question10:**What is un ordered list?
**Answer:**This takes a bulleted form. | michweb | |
1,888,536 | What it's like to be a woman developer | As a woman developer, my journey in the tech industry has been a blend of unique challenges and... | 0 | 2024-06-14T15:46:24 | https://dev.to/webdevqueen/what-its-like-to-be-a-woman-developer-4d0 | womenintech, career, beginners, discuss | As a woman developer, my journey in the tech industry has been a blend of unique challenges and rewarding experiences. Despite numerous initiatives promoting gender diversity, women, especially those in backend development roles, remain underrepresented. Here’s a glimpse into my personal experience navigating this male-dominated field.
## The landscape of women in tech
Before I even entered the tech world, I was already aware of the gender imbalance there. Breaking into this field was surrounded by societal stereotypes and a historical bias against women in STEM. Even my parents questioned my decision to study IT at the university when I told them for the first time. Even when I was A student in high school and there was a 99 % probability I would attend some university, they thought I would choose a different field, some "more feminine" field, such as medicine, law, or economics. They were kind of "shocked" by my choice of IT being the field of my future career. It's important to say that this was in 2014, 10 years ago.
I would like to believe our society has evolved in the last 10 years but the data claim the opposite. Over the past decade, the ratio of women in tech positions has improved from around 20% to nearly 30%. While progress has been made, significant disparities remain, especially in specialized technical roles and leadership positions.
## The team dynamic
Thanks to the low ratio of women in tech, joining only male tech teams has been a common experience for me. I usually was the only woman on the team. Interestingly, I’ve found that my presence often brings a positive shift in team dynamics. I don't think it was personal since I am not special in comparison to any other woman in the world. I think that they were cheered up just by having 'some' feminine energy around them. Many of my male colleagues express genuine happiness and enthusiasm about having a woman on the team. This isn’t just about gender diversity on paper; it’s about the fresh perspectives and diverse approaches I bring to problem-solving and project management. Our team environment becomes more collaborative and inclusive, which benefits everyone involved.
## Intellectual attraction
One of the more intriguing aspects of my career is the intellectual curiosity I often spark among my male colleagues. Many men in the tech industry seem genuinely interested in women who can engage in technical discussions and share their expertise. This mutual respect for knowledge and skills has led to stronger professional relationships and a deeper appreciation for diverse viewpoints within the team.
## Challenges and biases
However, being a woman in tech isn’t without its challenges. I’ve faced implicit biases and stereotypes that have sometimes created obstacles in my career. There have been moments where I felt the need to prove my technical skills and knowledge repeatedly, more so than my male counterparts.
## Conclusion
Being a woman developer in a male-dominated industry has its unique set of challenges and rewards. My journey has taught me the importance of resilience, support, and the power of diverse perspectives. Despite the difficulties, the impact that women like me have on tech teams and the industry as a whole is undeniable. By continuing to support and promote gender diversity in tech, we can create a more inclusive and innovative future. And personally, I think that men like working with tech-based women. As more women enter the tech workforce, our contributions not only enrich the industry but also pave the way for future generations of women developers. | webdevqueen |
1,888,782 | spring jdbc nedir ? | Spring JDBC, Spring Framework'ün bir parçası olan ve JDBC (Java Database Connectivity) kullanarak... | 0 | 2024-06-14T15:46:11 | https://dev.to/mustafacam/spring-jdbc-nedir--419m | Spring JDBC, Spring Framework'ün bir parçası olan ve JDBC (Java Database Connectivity) kullanarak ilişkisel veritabanlarıyla etkileşimi kolaylaştıran bir modüldür. Spring JDBC, ham JDBC API'sinin kullanımını basitleştirir, tekrarlanan kodları ortadan kaldırır ve kaynak yönetimini otomatikleştirir. Bu sayede geliştiriciler daha temiz ve okunabilir kod yazabilirler.
### Spring JDBC'nin Temel Özellikleri
1. **JdbcTemplate**: JDBC operasyonlarını basitleştirmek için kullanılan merkezi sınıftır. CRUD (Create, Read, Update, Delete) işlemleri için çeşitli yöntemler sağlar.
2. **NamedParameterJdbcTemplate**: Adlandırılmış parametreler kullanarak SQL sorgularını daha okunabilir hale getirir.
3. **SimpleJdbcInsert ve SimpleJdbcCall**: Ekleme ve saklı yordam çağrılarını basitleştirir.
4. **RowMapper ve ResultSetExtractor**: Veritabanından dönen sonuçların Java nesnelerine dönüştürülmesini sağlar.
### Spring JDBC Kullanarak Veritabanı İşlemleri
Aşağıda, Spring JDBC kullanarak bir veritabanı bağlantısının nasıl kurulacağını ve veri işlemlerinin nasıl yapılacağını gösteren bir örnek bulunmaktadır.
### Maven Bağımlılıkları
```xml
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.3.9</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.9</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
</dependencies>
```
### Veritabanı Yapılandırması (applicationContext.xml)
```xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- Veritabanı bağlantı bilgileri -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/your_database_name"/>
<property name="username" value="your_username"/>
<property name="password" value="your_password"/>
</bean>
<!-- JdbcTemplate bean tanımı -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
```
### Entity Sınıfı (Employee.java)
```java
public class Employee {
private int id;
private String name;
private int age;
// Getter ve Setter metodları
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
```
### EmployeeDAO Sınıfı (EmployeeDAO.java)
```java
import org.springframework.jdbc.core.JdbcTemplate;
import java.util.List;
public class EmployeeDAO {
private JdbcTemplate jdbcTemplate;
public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
}
// Veri ekleme
public int saveEmployee(Employee employee) {
String query = "INSERT INTO Employee (name, age) VALUES (?, ?)";
return jdbcTemplate.update(query, employee.getName(), employee.getAge());
}
// Veri güncelleme
public int updateEmployee(Employee employee) {
String query = "UPDATE Employee SET name=?, age=? WHERE id=?";
return jdbcTemplate.update(query, employee.getName(), employee.getAge(), employee.getId());
}
// Veri silme
public int deleteEmployee(int id) {
String query = "DELETE FROM Employee WHERE id=?";
return jdbcTemplate.update(query, id);
}
// Veri okuma
public List<Employee> getAllEmployees() {
String query = "SELECT * FROM Employee";
return jdbcTemplate.query(query, new EmployeeRowMapper());
}
}
```
### EmployeeRowMapper Sınıfı (EmployeeRowMapper.java)
```java
import org.springframework.jdbc.core.RowMapper;
import java.sql.ResultSet;
import java.sql.SQLException;
public class EmployeeRowMapper implements RowMapper<Employee> {
@Override
public Employee mapRow(ResultSet rs, int rowNum) throws SQLException {
Employee employee = new Employee();
employee.setId(rs.getInt("id"));
employee.setName(rs.getString("name"));
employee.setAge(rs.getInt("age"));
return employee;
}
}
```
### Main Sınıfı (Main.java)
```java
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.util.List;
public class Main {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
EmployeeDAO employeeDAO = (EmployeeDAO) context.getBean("employeeDAO");
// Yeni bir çalışan ekleme
Employee employee = new Employee();
employee.setName("John Doe");
employee.setAge(30);
employeeDAO.saveEmployee(employee);
// Çalışanları listeleme
List<Employee> employees = employeeDAO.getAllEmployees();
for (Employee emp : employees) {
System.out.println("ID: " + emp.getId() + ", Name: " + emp.getName() + ", Age: " + emp.getAge());
}
}
}
```
### Spring JDBC'nin Avantajları
1. **Kolay Kullanım**: Spring JDBC, JDBC API'sinin karmaşıklığını azaltarak daha basit bir kullanım sunar.
2. **Kaynak Yönetimi**: Bağlantıların, ifadelerin ve sonuç kümelerinin yönetimini otomatikleştirir.
3. **Hata Yönetimi**: SQLExceptions'ı anlamlı Spring DataAccessExceptions'a dönüştürerek hata yönetimini kolaylaştırır.
4. **Esneklik**: Ham SQL sorgularını kullanarak esneklik sağlar, ayrıca NamedParameterJdbcTemplate gibi araçlar ile okunabilirliği artırır.
Bu örnekler ve açıklamalar, Spring JDBC'nin temel kullanımını ve avantajlarını anlamanıza yardımcı olacaktır. Spring JDBC, veritabanı işlemlerini daha verimli ve yönetilebilir hale getirir. | mustafacam | |
1,888,160 | Using Power Automate Flow for Exporting and Importing Solutions | In today's post, I'll show you an easy way to export and import your Power Platform solutions using... | 0 | 2024-06-14T15:43:23 | https://dev.to/fernandaek/using-power-automate-flow-for-exporting-and-importing-solutions-3d7b | powerplatform, powerautomate, powerfuldevs, powerapps | In today's post, I'll show you an easy way to export and import your Power Platform solutions using Power Automate 😉
This method is a simpler alternative to pipelines in Power Platform and helps you keep everything in sync across your environments without the need for managed environments (though managed environments do offer great benefits like better security and governance). Power Automate makes it super straightforward, especially if you’re looking for a quick and cost-effective solution.
---
## Dataverse PREMIUM: Perform an unbound action
This is action is used to perform actions that aren’t tied to specific records, like exporting a whole solution from one environment and importing it into another.
It lets us make changes that affect the entire Dataverse, not just one specific record.
## Configure the flow to export the solution
Once the "Perform an unbound action" is selected, it's time to configure the action to perform the export of the solution.
- **Action Name:** Set this to **ExportSolution** This specifies that the action to be performed is exporting a solution.
- **SolutionName:** Input the name of the solution you want to export. You can use dynamic content if you're pulling the solution name from a previous step (like from a SharePoint list or a text input in the trigger).
- **Managed:** Choose "Yes" if you want to export the solution as managed (which cannot be modified once imported) or "No" for unmanaged.
- **TargetVersion:** Specify the version of the Dataverse to which the solution will be exported.
## Solution backup
I store the solution versions in a SharePoint library and from there I can trigger the import/export process.
To do so use the following expression to create a file with the exported content:
```
base64ToBinary(Body('Perform_an_unbound_action')?['ExportSolutionFile'])
```
## Configure the flow to import the solution
The ImportSolution-action will import the solution into the same environment where your flow is running. So, if your flow is set up in the target environment, that's where the solution will be imported.
Let's consider that the flow is already created in an environment called "Test." In this case, when you run the flow, the solution will be imported directly into the "Test" environment. You don't need to worry about specifying the target environment.
For this purpose, I have a JSON-button in my SharePoint library already configured with the flowID and environmentID
Now in the target environment, let's configure the action to perform the import.
- **Action Name:** Set this to **ImportSolution**, this specifies the task of importing a solution.
- **OverwriteUnmanagedCustomizations:** If set to "Yes," it’ll replace any existing customization in the target environment.
- **PublishWorkflows:** Set to "Yes" to automatically activate workflows after importing.
- **CustomizationFile:** The file content you're importing, either the content from a previous export or the file content stored in SharePoint.
```
body('Perform_an_unbound_action')?['ExportSolutionFile']
```
- **ImportJobId:** This is a unique ID for the import task, so we can generate a uniqueID for our export/import.
```
guid()
```
- **ConvertToManaged:** Change the solution to managed if set to "Yes."
- **ComponentParameters:** Add extra settings for the solution components.
- **SolutionParameters:** Add any special instructions for the solution.
## Done!
We can quickly see that our solution has been successfully imported.
---
## Conclusion
Whether you go with the manual method, the Power Platform CLI, set up pipelines or use Power Automate flows, each way has its own benefits and can be adjusted to suit what you need.
I also would like to add, that regardless of your reasons (saving costs, reducing time or simplifying the process) each method has its pros and cons.
It’s all about picking the right tool for the job to make your solution management easier and more effective.
Happy automating!🫶
| fernandaek |
1,888,779 | JavaScript: JWT Token | JWT Token Procedure -> Basically when a client sends request to the server for the first... | 0 | 2024-06-14T15:39:48 | https://dev.to/alamfatima1999/javascript-cookies-jwt-token-25kf | **_<u>JWT Token</u>_**
Procedure ->
1. Basically when a client sends request to the server for the first time-> Authentication.
2. It sends it's username and password to get authenticated by the server.
3. The server uses this information to generate a token -> JWT Token(Access Token) which has expiry time defined.
4. This token is then sent to the client (browser) with the token appended as a response payload.
5. Now since the client has the token -> so every time it requests the server, it sends this token along with the header of the request.
```JS
headers:{
authorization: 'Bearer <jwt_token>'
}
```
6. This token lets the server know that it has been authenticated and can access the data.
7. The server checks this token with the help of a public key it has and JWT verify method, and validates the client to access the data.
8. The required response is sent back to the user.
What is the possible problem with JWT Token?
Ans. Security breach -> as this can be easily read by anyone if stored
in session/local storage from the browser and used to access that session, so in that case we instead store it in the frontend or client code and define setter and getter methods for the client to access it.
When the token is about to expire, there is another API that is hit.
Which is refresh token and this is fired based on a percentage of the original expire time after which it asks the backend for a new JWT Token
with new expiry time.
| alamfatima1999 | |
1,724,835 | What was your win this week? | Heyo! Hope you all had a wonderful week. Looking back on this past week, what was something you... | 0 | 2024-06-14T15:38:55 | https://dev.to/devteam/what-was-your-win-this-week-5116 | weeklyretro | ---
title: What was your win this week?
published: true
description:
tags: weeklyretro
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/lj45j9daeu40yn1r7m7a.jpg
---
Heyo!
Hope you all had a wonderful week.
Looking back on this past week, what was something you were proud of accomplishing?
All wins count — big or small 🎉
Examples of 'wins' include:
- Starting a new project
- Fixing a tricky bug
- Watching scary movies 😱
Have a good weekend :heart: | jess |
1,888,778 | Best Selenium Python Frameworks for Test automation | According to a recent Developer Survey by Stack Overflow, Python is considered the most sought-after... | 0 | 2024-06-14T15:38:53 | https://dev.to/pcloudy_ssts/best-selenium-python-frameworks-for-test-automation-29ic | seleniumpythonframeworks, browsertesting, gherkinlanguage, seleniumtesting | According to a recent Developer Survey by Stack Overflow, Python is considered the most sought-after programming language among developers. It is the most accessible and simplified programming language that provides an extensive support system for test automation frameworks. With more and more implementation of Artificial Intelligence, Python has become a popular choice. Many similar Selenium Python frameworks for test automation are employed for [cross-browser](https://www.pcloudy.com/blogs/top-8-strategies-for-successful-cross-browser-testing/), [Selenium web testing](https://www.pcloudy.com/blogs/selenium-best-practices-for-web-testing/) and [automation browser testing](https://www.pcloudy.com/why-choose-automation-for-cross-browser-testing/). [Python testing frameworks](https://www.pcloudy.com/5-best-python-frameworks-for-test-automation-in-2020/) have seen a surge in their demand recently, making it imperative to choose the best Selenium test automation framework that suits your requirements.
Why Python for Test Automation? Because it’s simple, intuitive, and readable. It is less messy, beginner-friendly, and a highly competitive programming language. It provides a fast learning curve to write scripts in less time. Python is easy to understand, making it worthwhile for manual testers to feel confident while shifting towards automation.
Let us discuss how to use [Selenium Python Frameworks](https://www.pcloudy.com/blogs/best-selenium-python-frameworks-for-test-automation-in-2021/) for fulfilling your Selenium Test Automation needs
Apart from PyUnit that is a default Python Testing framework in 2023, there are a myriad of Selenium Python Frameworks available in the market to choose from, below are a few of the top frameworks:
1. Behave Framework
Behave is a widely used Python Selenium Framework allowing software teams to perform BDD Testing with the latest version. Behavior Driven Development, agile software Development Methodology enables developers, testers, and businesses to have a symbiotic collaboration. It functions similarly to SpecFlow and Cucumber Framework for automation testing. It uses Gherkin language to make business understandable test case scenarios encouraging Business-Driven Development (BDD). Behave is based on a fundamentally different BDD Framework, making it different from all other Python Selenium Framework. Behave carries a few disadvantages like, it is not supported well in PyCharm environment and can only be used in Black-box testing. The primary requirement for [automated browser testing](https://www.pcloudy.com/cross-browser-testing/) is the need for parallel testing. But it is not supported by Behave because it does not carry any built-in support for parallel test execution.
Requirement:
-It requires Python version 2.7.14 or above.
-Basic knowledge of any of the Behavior Driven Development tools
-Python Package Manager Command (pip) is needed for its installation
-The most preferred development environment like PyCharm or any other IDE is also required to work with Behave.
2. Lettuce Framework
Lettuce is a Behavior Driven Development Testing Framework based on Cucumber and Python. This Python Selenium framework was designed to make testing simple and interesting to its users. It is an open-source framework and is usually hosted on GitHub. It uses [Gherkin language](https://blog.testproject.io/2019/10/07/writing-gherkin-for-powerful-test-automation/) to create tests, test scenarios, and feature files using user-friendly keywords. It is the same as Behave Black box testing but can be used for more types of testing. Its execution requires on-time communication between all project stakeholders like developers, testers, marketing managers, and project managers.
Requirements:
-Lettuce needs Python version 2.7.14 or above,
-A prior experience with any BDD Framework
-Python Package Manager (pip) for installation
3. PyTest Framework
It is one of the most venerable Python Selenium frameworks for scalable test automation. Being open-source, it is easily accessible by the Development teams, QA teams, and open learning groups for open source projects. It supports Unit, Functional, and API Testing. It is compatible with Python 3.5 and PyPy3 Python versions and is easily installable via Python Package Manager (pip) command. Python Testing Frameworks start with traditional test_ (or end with _test) nomenclature but PyTest doesn’t carry such restrictions because of its built-in auto-discovery features that look for inherent test modules and functions. Also, with the help of the assert writing feature, there is no need to remember self.assert* names to fetch failing assert statement data. We can not ignore the fact that there are compatibility issues with PyTest, which means you can write test cases with convenience but can’t use them with other testing frameworks. Creating customized HTML reports with Robot Framework is quite tricky. Also, PyTest does not support parallel testing entirely.
Requirements:
–Learning and using Pytest is effortless, making it easy to get started with just a little knowledge of any Python Selenium Framework.
-You would also need a Python integrated development environment along with Python Packaging Manager for PyTest installation.
4. Robot Framework
Robot Framework is a popular open-source [Python Selenium Frameworks](https://www.pcloudy.com/blogs/best-unit-testing-frameworks-to-automate-your-desktop-web-testing-using-selenium/) trusted by Python Developers for implementing acceptance testing. Acceptance is also used for Test-Driven Development (TDD) and Robotic Process Automation (RPA) within the [automated testing strategy](https://www.pcloudy.com/automation-execution/). Robot Framework is Python-based but can also run on .net-based IronPython and Java-based Jython. Robot Framework uses Keyword style to write test cases. It provides easily understandable HTML reports and screenshots. The Robot framework has a rich API ecosystem that allows smooth integration with third-party tools. It is very well-documented. It follows a keyword-based, data-driven, and Behaviour driven approach for the maintenance of test readability. It is compatible with Windows, macOS, and Linux operating systems and with all applications, be it mobile, web, or desktop.
Requirement:
-The capacities of Robot Framework can be optimally utilized using Python version 2.7.14 or higher.
-Python Package Manager Command (pip) is used for its installation.
-A development framework like PyCharm Community Edition should be must to download to use the Robot framework.
5. PyUnit (or UnitTest) Framework
UnitTest is another name for PyUnit, which is considered a standard Python Selenium Framework for test automation. PyUnit is a [Unit testing framework](https://www.pcloudy.com/blogs/best-unit-testing-frameworks-to-automate-your-desktop-web-testing-using-selenium/) for Python inspired by JUnit and works similar to other unit testing frameworks. It is the first Python automated Unit Testing Framework- a part of the Python Testing Library. With easy installation and Configuration, UnitTest Python Unit Testing Framework is used by all developers who are getting started with Selenium Test Automation. The test cases follow a usual start with test_ (or end with _test) nomenclature. UnitTest reporting utilizes UnitTest-XML-reporting and generates XML reports like in the case of [Selenium Testing](https://www.pcloudy.com/selenium-testing-for-effective-test-automation/) with JUnit. The traditional CamelCase naming method derived from JUnit persists even now, making the test code unclear sometimes. Also, there is an increasing need for boilerplate code.
Requirements:
–Since UnitTest comes by default with Python, Python Selenium Framework does not require any additional package or module installation.
-Basic knowledge of Python Framework is sufficient to get started with PyUnit.
-In case you are dealing with additional modules, Python Package Manager Command (pip) and IDE would be required.
6. TestProject Framework
TestProject is a cutting-edge open-source automation framework that’s great for seamless test automation development. Its user-friendly interface and extensive capabilities make it a favorite for developers to simplify the process of creating and executing automated tests. One of the notable features of TestProject is its ability to generate both cloud and local HTML reports, allowing users to easily analyze test results and track the progress of their automation efforts. These reports provide detailed insights into test execution, including test pass/fail status, execution times, and any potential errors or exceptions encountered during testing. It comes bundled with all the necessary dependencies, conveniently packaged as a single executable cross-platform agent file. This eliminates the need for users to manually install and manage multiple dependencies, streamlining the setup process and enhancing overall productivity.
Requirements:
-TestProject works well with Python version 3.6 or above.
7. Testify Framework
Python’s Unittest and Nose Python Selenium framework were replaced with Testify, which is more Pythonic in nature. It is an advanced version of Unittest. Testify was created after Unittest so, the tests framed for Unittest demand bare minimum test modifications to work well with Testify. It is mainly used for performing automated Unit, System, and Integration testing. Testify is a successful example of Java Implementation of semantic testing. Testify’s expansive plugin ecosystem contains important properties around reporting and publishing. Other features similar to Nose2 Framework are automatic test discovery, class level set-up, and simple syntax to fixture methods that need to be run once for the whole set of test methods. However, it does not provide extensive documentation, and the scope for performing parallel testing makes it quite a challenge.
Requirements:
-Testify is based on the existing Unittest framework, which provides a gradual learning curve
-It only requires the Python Package Manager for installation.
Conclusion
Selenium is at its best when developers perform automation testing and save time by pushing the changes quickly. The biggest challenge that Selenium has to deal with, even after being known for having a robust testing suite, is the ever-changing nature of the front-end technologies. We focused on various popular Selenium Python Frameworks for testing available today. Each one of them has its respective strengths and weaknesses, however, the choice of the framework you use must be made depending upon the team’s language proficiency and its relevance in the type of project requirements. There are some BDD tools like Behave and Lettuce that are used in case the team comprises non-technical members. PyTest is a great choice over the default Python Selenium framework to leverage the development of complex functional tests. If you are just at the beginning stage and want to know how to use selenium python for testing, Robot Framework should be a great starter.
| pcloudy_ssts |
1,888,776 | L'Open Source et Moi | Je m'appelle Firmin Nganduli et je suis développeur full stack. Pendant trois mois du 11 mars au 11... | 0 | 2024-06-14T15:35:06 | https://dev.to/firminfinva/lopen-source-et-moi-5im | opensource, wiki, mediawiki, goma | Je m'appelle Firmin Nganduli et je suis développeur full stack. Pendant trois mois du 11 mars au 11 juin 2024, mon intérêt pour l'open source a été éveillé grâce à Kali Academy, une organisation dédiée à cette philosophie. Attiré par le développement logiciel et désireux d'explorer l'open source, j'ai décidé de postuler pour un stage professionnel de trois mois au sein de cette institution.C’etait un plaisir et productif de faire parti de la cohorte kali academie 2024 Goma composer de 10 programmeur motivés.
## L'introduction à l'open source (premier mois)
Pendant le premier mois, nous avons effectué plusieurs activités pour nous introduire davantage dans l'univers de l'open source. Voici quelques-unes de ces initiatives :
- Apprentissage en public
- Utilisation du système Linux
- Maîtrise de la ligne de commande (CLI)
- Révision de Git et GitHub
- Lecture du livre "Roads and Bridges: The Unseen Labor Behind Our Digital Infrastructure"
## L’initiation dans l’univers mediawiki (Deuxieme mois)
Le deuxième mois était consacré à notre spécialisation dans l'univers de Mediawiki, en mettant particulièrement l'accent sur l'infrastructure de Mediawiki. Nous avons commencé ce mois par une brève introduction à certains wikis en particulier, tels que Wikipedia et Wikidata, avant d'apprendre comment contribuer à ces plateformes ainsi qu'à Wikicommons. Grâce à la structure de Mediawiki, nous avons découvert où se trouvent stockées les extensions Mediawiki et comment développer une extension Mediawiki.On a développé une extension "Page Summary", une expérience enrichissante.
## Projet de fin de stage (troisième mois)
Pour cette dernière phase de notre stage, nous avons été répartis en deux équipes pour nous concentrer sur des projets de fin de stage. J'ai eu le privilège de faire partie de l'équipe travaillant sur un projet excitant appelé "Leaderboard". Cette plateforme a pour but de classer les contributeurs en fonction de leur activité sur une période donnée. Travailler sur ce projet m'a offert l'opportunité d'appliquer toutes les compétences acquises au cours des deux premiers mois et de contribuer à un outil véritablement utile et innovant pour la communauté Wikimedia.
Dans le cadre de ce projet, nous avons également eu recours à plusieurs API, notamment celle permettant de récupérer les contributions de Wikipedia. De plus, nous avons utilisé des images provenant de Wikicommons pour créer des arrière-plans attrayants, enrichissant ainsi l'expérience utilisateur de notre plateforme.
## Impact et Réflexion
Ce stage chez Kali Academy a été une expérience transformative. Il m'a permis d'e voir l'importance de l'open source dans le monde de l'information. La collaboration avec mes collègues stagiaires et nos mentors m'a également aidé à développer des compétences interpersonnelles essentielles, telles que le travail en équipe et la communication efficace. Cette expérience a renforcé mon intérêt pour l'open source et m'a motivé à continuer à contribuer à cet univers en constante évolution.
Je tiens personnellement à remercier Abel Mbula et Delord, membres de l'équipe de Kali Academy, ainsi que tous les autres membres, pour avoir consacré leur temps et leurs efforts à notre formation. En cours de la formation, je suis vraiment reconnaissant envers mes amis qui étaient là pour répondre à mes questions. C'était une expérience formidable d'être parmi les stagiaires. Je les remercie sincèrement. Rendez-vous sur le dépôt open source, car vous avez su attirer mon attention dans l'univers open source.
| firminfinva |
1,888,775 | The Art of Learning from Tutorials | Watching the whole tutorial isn't important, understanding what you're watching is. Pay attention to... | 0 | 2024-06-14T15:34:19 | https://dev.to/tamilvanan/the-art-of-learning-from-tutorials-2l8k | tutorial |
- Watching the whole tutorial isn't important, understanding what you're watching is.
- Pay attention to understanding the concepts, not just finishing the tutorial.
- Write down key points and ideas as you go. This helps reinforce learning.
- Take breaks to think about what you’ve learned and how it applies to your goals.
- Apply what you’re learning in real-time. Doing helps solidify understanding.
- Go back to complex parts until you fully grasp them. Repetition aids retention.
- If something isn’t clear, seek out additional resources or ask for help.
- Use what you’ve learned in a project or problem. Practical application is crucial.
- Summarize what you’ve learned and explain it to someone else. Teaching reinforces understanding.
The goal is to understand and apply the knowledge from tutorials, not just to complete them. | tamilvanan |
1,887,510 | Deploy an Amazon Lex Chatbot to your own website. | Why a chatbot? For professionals, integrating a chatbot into your website is more than... | 0 | 2024-06-14T15:33:57 | https://dev.to/monica_escobar/deploy-an-amazon-lex-chatbot-to-your-own-website-e18 | aws, automation, ai, lex | ## Why a chatbot?
For professionals, integrating a chatbot into your website is more than just a cool tech feature; it’s a way to showcase your commitment to innovation and user experience. It reflects a forward-thinking approach and shows that you value your visitors’ time and needs. By offering instant, personalised interactions, a chatbot makes your website more engaging and user-friendly.
Incorporating a chatbot into your website is a smart move that demonstrates a proactive approach to communication and technology. It’s about making connections easier, information more accessible, and experiences more enjoyable for your visitors. In essence, it’s a reflection of who you are as a professional – someone who values innovation, accessibility, and excellence in every interaction.
These are just some of the reasons I chose to build and deploy my own chatbot, and I ended up liking it so much that I wanted to share the steps with everyone else in case you found it useful or beneficial for any of your projects.
**Stack/resources used:**
-Amazon Lex
-CloudFront
-My own website
Below are the steps I followed to create the chatbot using AWS Lex:
When creating a chatbot in AWS Lex, **_you have several options:_**
- Descriptive Bot Builder: Automatically generates intents, utterances, and slots based on your use case but you need to use BedRock for this, make sure you check the fees before you do this. Also, you will need to apply to have access granted if you have never used it before.
- Create a Blank Bot: Start from scratch and define your own intents, utterances, and slots. This is the one I chose.
- Start with a Transcript: Upload a JSON file with the conversation flow. Bear in mind, that if you decide to upload the json file you will need to provide 1000 lines as a minimum.
**
Using the Visual Editor: **
- Create a blank bot and proceed to the Visual Editor.
- Define intents, slots, and conversation flows using a visual interface.
- Add intents, slots, prompts, and responses to script the conversation flow.
**
Testing and Building the Chatbot:**
- After defining the conversation flow, save the bot.
- Build the bot and test it within the AWS Lex console to ensure it functions correctly.
**
Integrating the Chatbot:**
- Once the chatbot is built successfully, create an alias for the bot.
- Integrate the chatbot with your website by deploying a stack (you can get it here: https://aws.amazon.com/blogs/machine-learning/deploy-a-web-ui-for-your-chatbot/)that includes CloudFront, web UI artifacts, and authentication using Amazon Cognito (if required, I personally did not include authentication).
Deployment and Configuration:
- Launch the stack with the necessary parameters like Bot ID, Alias ID, and other configurations.
- Copy the snippet URL provided after the stack creation to integrate the chatbot into your website.
**_
Finalising Integration: _**
- Update your website's HTML code with the provided snippet URL to embed the chatbot.
- Upload the updated HTML file to your hosting platform (e.g., S3 bucket).
- Invalidate the CloudFront cache to reflect the changes on your website.
Testing the Integrated Chatbot:
- Access your website and interact with the chatbot using text or voice commands.
- Validate that the chatbot functions correctly and responds to user inputs as expected.
**Future enhancements: **
Looking ahead, my journey with AI and automation is far from over. I have exciting plans to further enhance the capabilities of the chatbot and, in turn, the overall user experience of my portfolio.
One of the key areas I’m focusing on is harnessing user behaviour insights. The chatbot has the potential to track common questions and interactions, revealing what visitors find most interesting or important, this constant feedback can help me enhance the user experience.
If you got this far, thank you so much and happy building!
| monica_escobar |
1,888,764 | Free Website Checker Monkey | Keeping your website problem-free is hard. When you change something, you often don't know if... | 0 | 2024-06-14T15:30:20 | https://dev.to/irfanahmadin/free-website-checker-monkey-57f6 | webdev, testing, website, qa | Keeping your website problem-free is hard. When you change something, you often don't know if something is wrong until you check every part yourself.
what if there is a virtual monkey checking your website and score it as per best practices?
So try this https://labs.checkops.com
Check sample report :https://labs.checkops.com/freerun/gx43ckcu1o | irfanahmadin |
1,888,761 | organized dotfiles | Tried my dotfiles workflow w/ stow command, check it out. | 27,725 | 2024-06-14T15:29:34 | https://dev.to/kenkoro/dotfiles-w-stow-4kh2 | opensource, learning, linux, showdev | Tried my dotfiles workflow w/ stow command, [check it out][dotfiles].
[dotfiles]: https://github.com/kenkoro/dotfiles | kenkoro |
1,888,762 | Best Unit Testing Frameworks to Automate your Desktop Web Testing using Selenium | Introduction Selenium is the most preferred tool of all times when it comes to automating web... | 0 | 2024-06-14T15:28:40 | https://dev.to/pcloudy_ssts/best-unit-testing-frameworks-to-automate-your-desktop-web-testing-using-selenium-2d0b | seleniumframework, testng, functional, endtoend | Introduction
Selenium is the most preferred tool of all times when it comes to automating web applications. Selenium supports various unit testing frameworks based on multiple programming languages like Java, C#, PHP, Ruby, Perl, JavaScript, and Python. These frameworks are used for executing test scripts on web applications across different platforms such as Windows, MacOS, and Linux. Any successful [automation process](https://www.pcloudy.com/automation-testing-challenges-and-their-solutions/) depends on robust [testing frameworks](https://www.pcloudy.com/top-10-test-automation-frameworks) that help the QA team optimize their agile processes, reduce maintenance cost, testing efforts, and provide a higher return on investment.
Selenium Framework and Unit Testing
What is Unit Testing?
[Unit Testing](https://www.pcloudy.com/importance-of-unit-testing/) is a process where the developer breaks down the entire web application code into smaller units and tests them separately. This process of breaking and testing each unit is often known as Unit testing. It is the first stage of web application testing in every Software Development Life Cycle process (SDLC). Some developers skip unit testing, which may lead to higher bugs and other problems at the later stages. Early detection of errors always saves users from facing serious issues later. Automation of unit testing has significantly simplified the testing process, saving time and making it more efficient.
When it comes to automating unit testing, [Selenium Automation Testing](https://www.pcloudy.com/blogs/test-automation-using-selenium-chromedriver/) is considered one of the most reliable and secure testing frameworks by developers. It’s a modern automated unit testing framework that creates automated unit tests that integrate quickly with Selenium. The Unit Test Framework used by developers to automate unit tests allows them to validate the code and ensures the process follows these steps:
Creating test cases for different parts of the web application.
Reviewing and rewriting the test cases in case of glitches.
Understanding if every code line is within the scope and as intended.
Executing the code with the help of Selenium Grid.
Selenium Automation Framework
A [Selenium Framework](https://www.pcloudy.com/blogs/best-unit-testing-frameworks-to-automate-your-desktop-web-testing-using-selenium/) is a code structure that improves code maintenance, readability, reusability, and allows multiple users to work on the same code. Developers choose a specific Unit Testing Framework based on the programming language they use. The framework allows for automatic running of unit tests on already developed code, ensuring that the new code isn’t breaking the existing one. The automation process creates more space for the developers to focus on developing new code rather than wasting time manually testing the earlier written code.
Purpose of Unit Testing Framework in Selenium
Unit testing frameworks are the foundation for building different test automation frameworks in Selenium to automate and perform the following:
Control the flow of test case execution
Maintain a Separate group system for the test cases.
Prioritize which test case should run first in the series.
Managing tests in such a way that the same test can run multiple times with different data sets
Capable of reading the content from external sources, for example, Excel Files, etc.
Saves time by allowing multiple tests to run parallelly
Creates text logs to track changes that happened while the tests were running
Report generation to analyze test results for each test execution
Different Frameworks in Selenium
Now that we understand the concept, process, and purpose of Unit Testing in Selenium, let’s talk about Unit testing Frameworks compatible with the popular programming languages for Selenium Test Automation.
A. Selenium Framework for unit test automation in JAVA:
The most recognized language for creating dynamic and robust web applications is JAVA. For performing unit testing on Java-based applications, not many frameworks are available in the market. JUnit and TestNG are the most used frameworks as of today.
JUnit:
If we look back to history, JUnit was created by Erick Gamma and Kent Beck. It is the most preferred choice of the developers for performing automated unit testing of Java-based applications. Primarily to write and execute repetitive test cases. It can easily integrate with the Selenium Webdriver, strengthening test-driven development approach.
TestNG:
TestNG (where NG refers to Next Generation) is another popular test automation framework for JAVA among developers. It is an open-source framework developed by Cedric Beust. The best thing about [TestNG ](https://www.pcloudy.com/integration-of-testng-framework-with-pcloudy-device-lab/)is that it covers various types of testing categories like [Functional](https://www.pcloudy.com/functional-testing-vs-non-functional-testing/), Integration, unit, [end-to-end](https://www.pcloudy.com/how-to-measure-the-success-of-end-to-end-testing/). It is more robust and reliable than JUnit as it allows developers to create more flexible tests and overcome any challenges of JUnit. It provides additional functionalities like grouping, sequencing, parameterizing, and generating test reports for evaluation of failed tests.
B. Selenium Framework for unit test automation in JavaScript:
JavaScript is one of the most dynamic languages that is used for HTML web applications, and documents like PDFs or Desktop widgets. JavaScript unit testing is performed on the frontend and in the browser. Two of the most used JavaScript unit testing frameworks are:
JEST:
JEST is maintained by Facebook and is an open-source JavaScript unit testing Framework. It covers different testing categories but it is often picked up primarily for unit testing; for testing react and react.js applications. It offers a zero-configuration testing feature and its easy-to-use interface makes it a preferred choice for developers.
Jasmine:
The Jasmine open-source JavaScript Framework for unit testing was introduced in the year 2010. It is unique because it supports Behavior Driven Development (BDD) responsible for testing a single unit of JavaScript code. Jasmine proves to be the best frontend Selenium JavaScript testing framework for testing web app UI that takes care of the responsiveness and visibility testing on multiple devices. If there is an application not supported by JEST, Jasmine can take over and facilitate the testing of all kinds of JavaScript apps.
C. Selenium Framework for unit test automation in Python:
Python is the only language that is widely used and known to almost every developer. Generally, Desktop GUI and web applications are developed using Python. The language is growing in popularity daily. It has also been recognized as one of the best programming languages of the year 2020 by the Tiobe index of programming language popularity alongside C++. Hence, the need for python-based automated testing frameworks is at an ever-increasing high. A few of them are as follows:
PyUnit:
This framework is for [Python-based web apps](https://www.pcloudy.com/5-best-python-frameworks-for-test-automation-in-2020/), also known as UnitTest. PyUnit’s base class TestCase includes all assertion methods, code cleanup, and set up routines. It can create XML reports using the UnitTest-XML-reporting test runner. Load method and TestSuite Class are used for grouping and loading the tests. It comes loaded with a Python library, therefore it doesn’t need any specific configuration and installation.
PyTest:
PyTest is the second most used open-source Unit Testing framework for Python-based applications, supporting API and complex functional testing. Additionally, PyTest has eased testing databases, UIs and APIs. Its ability to integrate easily with third-party plugins and assert writing has made it a popular choice among the projects like Mozilla and Dropbox.
D. Selenium Framework for unit test automation in C#:
C# is a modern object-oriented programming language by Microsoft. It is a combination of strengths of C++ and visual basic. It resembles the features of Java, and that is why considered for building dynamic web applications. The most important unit testing frameworks in this case are:
MSTest:
It is an automated testing framework by Microsoft Visual Studio. It is used to test .Net-based applications and doesn’t require additional installation on the system. Using TestComplete, a functional automated testing platform, MSTests can easily integrate with the test scripts as a part of the testing process.
NUnit:
It was introduced to overcome the shortcomings of the MSTest framework. It is again an open-source framework written in C# language. This XUnit component can test any type of .Net application. You can differentiate your codes from unit tests by simply adding a class library, which means it doesn’t need a specific project type. However, developers will need an in-depth knowledge of the .Net frameworks to be able to reap the maximum benefits of this framework.
E. Selenium Framework for unit test automation in Perl:
Perl is a general-purpose language developed mainly for text manipulation. It is also used for web and GUI development, system administration, etc., in recent times. Larry Wall created this language; it is very stable and works in a cross-platform scenario. This language is a bit complicated to learn and implement; that is why there are not many unit testing frameworks available relating to Perl. However, PerlUnit is a savior in this game.
PerlUnit:
It is the only framework designed for testing Perl-based applications, now found as a project on SourceForge. It is an open-source unit testing framework, based on the JUnit 3.2 model that smoothly integrates with Selenium Grid to automate testing.
F. Selenium Framework for unit test automation in Ruby:
Ruby is another object-oriented, high-level language for developing web applications. It is used for data analysis and prototyping. It offers faster development code as compared to other languages. There are many unit testing frameworks for Ruby-based applications, but the most common of all is:
Test:Unit
It is popular for Ruby-based web applications and comes along with the Ruby Library. It was designed by Kent Back to create unit tests, analyze outputs and automate unit testing of web apps. Prior knowledge of using the XUnit framework and Ruby Language is mandatory to make optimum use of this framework.
Additional Testing Strategies:
Data-driven Testing: This is a testing strategy where input values are read from data files like CSV, Excel, XML, etc. The benefit of data-driven testing is that it allows us to test the same functionality multiple times with different sets of input data.
Keyword-driven Testing: This is a testing strategy where test case execution is driven by a set of keywords. Each keyword corresponds to an individual testing action like a mouse click, selection of a menu item, keystrokes, opening or closing a window or dialogue box, etc.
Hybrid Testing: As the name suggests, this is a mix of data-driven and keyword-driven testing strategies. The hybrid framework is considered the most powerful and flexible type of framework, as it leverages the advantages of both data-driven and keyword-driven frameworks.
[Cross-browser Testing](https://www.pcloudy.com/cross-browser-testing/): This is a type of testing used to verify if your web application works as expected in different browsers. Selenium Grid is a tool from the Selenium Suite that helps in achieving parallel execution and supports running tests in a distributed test execution environment.
pCloudy – Accelerating Selenium Testing on the Cloud
One of the notable advancements in the testing world is the introduction of cloud-based testing platforms. pCloudy is one such platform that provides an end-to-end solution for automated testing of web and mobile applications.
The integration of pCloudy with Selenium can significantly speed up the testing process and improve efficiency. Selenium scripts can be run directly on pCloudy. This integration allows for the simultaneous execution of scripts on multiple devices, which can greatly reduce the overall test execution time.
Moreover, pCloudy provides a plugin for Selenium, which makes it possible to execute Selenium scripts on multiple Android and iOS devices. You can also schedule your testing which can be particularly useful in a CI/CD pipeline, making your development process faster and more efficient.
Real-time access to devices: It offers real-time access to a variety of devices with different OS versions. This eliminates the need for maintaining a device lab and can help you save a significant amount of time and resources.
Parallel execution: With pCloudy, you can run your Selenium tests simultaneously on multiple devices. This accelerates your testing cycle and increases the efficiency of your testing process.
Bot Testing: pCloudy’s AI-powered testing bot, Certifaya, can generate detailed test reports, pointing out the issues and even providing screenshots for better understanding.
Integration with CI/CD tools: pCloudy integrates seamlessly with popular CI/CD tools like Jenkins, Bamboo, TeamCity, etc. It allows you to run your tests in a continuous testing environment.
In-depth reporting: It provides comprehensive reports and logs that include device logs, video logs of the test execution, and performance metrics. This can be immensely helpful in identifying issues and debugging them.
Conclusion
Unit testing helps the QA team create a competitive end product and ensures its faster release to the market. It also confirms that every unit of the code is thoroughly tested as soon as it is created. In this way, the chances of critical bug issues are reduced and do not impact the later stages of SDLC. There are language-based frameworks for JAVA, C#, PHP, Ruby, JavaScript, Python, available for testing web apps that easily integrate with [Selenium Automation Testing](https://www.pcloudy.com/selenium-testing-for-effective-test-automation/). Developers can choose from various options available based on what language the web apps are built-in.
| pcloudy_ssts |
1,886,038 | JavaScript30 - 5 Flex Panels Image Gallery | Well here we are! Back with another update on my progress through Wes Bos's JavaScript 30. In this... | 0 | 2024-06-14T15:27:13 | https://dev.to/virtualsobriety/javascript30-5-flex-panels-image-gallery-2n3k | javascript, beginners, learning, javascript30 | Well here we are! Back with another update on my progress through Wes Bos's [JavaScript 30](https://javascript30.com/). In this challenge I had to take 5 pre-selected images with some "motivational" words and update them with flexbox and CSS to make them grow and shrink as well as reveal other words when clicked. Being that it involved CSS and flexbox I figured this challenge would be right up my alley!
Let me start by saying this was another challenge where I chose to just follow along with Wes's instruction instead of stopping early and solving it myself. Unlike before I made this decision after seeing how much of the CSS was already completed. There were a few instances that I would have liked to figure out myself that Wes already had done for me. This was in the transition timing. I am still not comfortable with this concept in CSS, also, what the hell is a cubic-bezier??? That in itself was a letdown...but that doesn't mean that there wasn't anything to gain from this challenge.
```CSS
.panel {
background: #6B0F9C;
box-shadow: inset 0 0 0 5px rgba(255,255,255,0.1);
color: white;
text-align: center;
align-items: center;
/* Safari transitionend event.propertyName === flex */
/* Chrome + FF transitionend event.propertyName === flex-grow */
transition:
font-size 0.7s cubic-bezier(0.61,-0.19, 0.7,-0.11),
flex 0.7s cubic-bezier(0.61,-0.19, 0.7,-0.11),
background 0.2s;
font-size: 20px;
background-size: cover;
background-position: center;
```
Don't get me wrong. I completely understand why all of the HTML and most of the CSS work was already done before starting the challenge as the challenge itself is to have you focus on adding your own JavaScript and tweaking the CSS to make it functional. However I do still find myself struggling to work on someone else's code. I would rather make something completely from scratch and know the entire code inside and out. One positive about how each of these challenges is set up is that all of the code is in one HTML file. It is kind of nice not having to look through HTML, CSS and JavaScript files separately and have to piece together what everything does.
There was one thing that I found extremely cool in this lesson. I was unaware that it was possible to "grab" different elements through their CSS properties. This happened in a JavaScript function with `e.propertyName.includes('flex')`. I didn't even realize what was happening at the time, but looking back over the code now I see how this was done.
```JS
const panels = document.querySelectorAll(".panel")
function toggleOpen() {
this.classList.toggle('open')
}
function toggleActive(e) {
console.log(e.propertyName)
if(e.propertyName.includes('flex')) {
this.classList.toggle('open-active')
}
}
panels.forEach(panel => panel.addEventListener('click', toggleOpen));
panels.forEach(panel => panel.addEventListener('transitionend', toggleActive));
```
I don't have too much more to say about this one as I did just follow along so I didn't learn too much on my own. I am almost excited to move on to the next challenge but being that I feel like each one of these posts is further removed from the last. On the bright side I should have some more free time coming up soon as I have officially put in my notice at work so I will be able to focus on coding full time! Cross your fingers that this works out for me and I will see you next time for: Ajax Type Ahead!...(what the hell does that even mean?)
| virtualsobriety |
1,888,677 | Taming the Microservices Beast: Container Orchestration with Amazon ECS and EKS | Taming the Microservices Beast: Container Orchestration with Amazon ECS and... | 0 | 2024-06-14T15:05:39 | https://dev.to/virajlakshitha/taming-the-microservices-beast-container-orchestration-with-amazon-ecs-and-eks-5fgn | 
# Taming the Microservices Beast: Container Orchestration with Amazon ECS and EKS
Microservices architectures have revolutionized the way we design, develop, and deploy software. This approach breaks down monolithic applications into smaller, independent services that communicate with each other, offering enhanced flexibility, scalability, and fault tolerance. However, managing a complex web of interconnected services presents its own set of challenges. This is where container orchestration comes in, providing the tools to effectively deploy, manage, and scale microservices applications.
This article delves into the world of container orchestration within the AWS ecosystem, focusing on two powerful services: Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS). We'll explore their core functionalities, dissect various use cases, and compare them to offerings from other cloud providers.
### Understanding Container Orchestration
Before diving into the specifics of ECS and EKS, let's establish a clear understanding of container orchestration.
At its core, container orchestration automates the deployment, management, scaling, and networking of containers. In essence, it acts as an orchestrator for your microservices, ensuring they work together seamlessly. Key functionalities of a container orchestration system include:
* **Container Deployment:** Effortlessly deploy and manage containerized applications across a cluster of machines.
* **Service Discovery and Load Balancing:** Enable seamless communication between microservices and distribute traffic efficiently.
* **Scaling and Self-Healing:** Dynamically adjust resources based on demand and automatically recover from failures.
* **Networking:** Establish secure and efficient communication channels between containers and external services.
* **Secret Management:** Securely store and manage sensitive information like API keys and passwords.
### Amazon ECS: Simplicity and Integration
Amazon ECS stands as a fully managed container orchestration service designed for deploying, managing, and scaling containerized applications on AWS. Its strength lies in its simplicity and deep integration with other AWS services, making it an excellent choice for organizations seeking a robust yet manageable solution.
#### How ECS Works
ECS centers around three key components:
* **Clusters:** A logical grouping of Amazon EC2 instances that serve as the platform for your containers.
* **Task Definitions:** Blueprints defining how your containers should run, including image, environment variables, and resource requirements.
* **Services:** Abstractions defining the desired state of your application, ensuring a specified number of tasks for a given task definition remain running.
#### Use Cases for ECS
Let's examine five prominent use cases where ECS excels:
1. **Web Applications:** ECS efficiently deploys and scales multi-tier web applications, effortlessly handling traffic spikes and ensuring high availability. Load balancing across containers guarantees optimal performance.
2. **Batch Processing:** For tasks that can be broken down into smaller, independent units, ECS proves invaluable. Whether it's processing large datasets, running simulations, or performing ETL operations, ECS ensures efficient resource utilization and timely completion.
3. **Microservices Architecture:** ECS forms the backbone for deploying and managing complex microservices-based applications. Its service discovery features facilitate seamless inter-service communication.
4. **Machine Learning:** ECS can power your machine learning workflows, from training models on vast datasets to deploying inference endpoints. Its integration with AWS services like SageMaker streamlines the entire ML pipeline.
5. **CI/CD Pipelines:** ECS integrates seamlessly with CI/CD tools, enabling automated deployments and rollouts. This fosters rapid development cycles and ensures consistent delivery of new features and updates.
### Amazon EKS: Kubernetes Powerhouse
Amazon EKS provides a managed Kubernetes service, granting you the flexibility and portability of Kubernetes with the ease of management offered by AWS. If your organization seeks industry-standard Kubernetes while leveraging AWS's infrastructure, EKS emerges as a compelling choice.
#### Diving into Kubernetes
Kubernetes, an open-source container orchestration platform, has become the de facto standard for managing containerized applications. It offers a rich set of features, including:
* **Pods:** The smallest deployable units in Kubernetes, encapsulating one or more containers.
* **Deployments:** Manage the rollout and update process for your pods, ensuring a specified number remain available.
* **Services:** Expose your applications running on pods to the outside world, providing load balancing and service discovery.
#### Use Cases for EKS
Let's explore five compelling use cases where EKS shines:
1. **Hybrid Cloud Deployments:** EKS facilitates the deployment of containerized applications across on-premises infrastructure and AWS, offering true hybrid cloud capabilities.
2. **Complex Applications:** For applications demanding advanced networking, storage, or security requirements, EKS provides the flexibility and control needed.
3. **Leveraging the Kubernetes Ecosystem:** EKS grants you access to the vast Kubernetes ecosystem, encompassing a wide array of tools, frameworks, and integrations.
4. **Migrating Existing Kubernetes Workloads:** Existing Kubernetes applications can be seamlessly migrated to EKS, minimizing disruption and leveraging AWS's infrastructure.
5. **DevOps Integration:** EKS integrates seamlessly with popular DevOps tools and practices, empowering teams to implement robust CI/CD pipelines and automate infrastructure management.
### Alternatives and Comparisons
While ECS and EKS dominate the container orchestration landscape within AWS, other cloud providers offer compelling alternatives:
* **Google Kubernetes Engine (GKE):** A fully managed Kubernetes service from Google Cloud Platform, known for its strong integration with other Google Cloud services.
* **Azure Kubernetes Service (AKS):** Microsoft Azure's managed Kubernetes offering, tightly integrated with the Azure ecosystem.
* **Docker Swarm:** A native orchestration tool for Docker, offering a simpler alternative for smaller deployments.
Each solution comes with its own strengths and weaknesses, and the best choice ultimately depends on your specific requirements.
### Conclusion
In the ever-evolving world of microservices architecture, container orchestration plays a crucial role in harnessing the power and flexibility this approach offers. Amazon ECS and EKS, each with its strengths, provide robust solutions for managing the complexities of containerized applications.
ECS appeals with its simplicity and tight integration within the AWS ecosystem, making it an excellent choice for organizations seeking a managed and easy-to-use solution.
EKS, on the other hand, unleashes the full potential of Kubernetes, granting organizations flexibility, portability, and access to a vast open-source ecosystem.
Ultimately, the choice between ECS and EKS depends on the specific needs of your application and organization.
### Architect's Corner: Advanced Use Case
Let's imagine a scenario where we need to build a real-time fraud detection system that can handle massive data streams from various sources. This system needs to be highly scalable, fault-tolerant, and capable of integrating with multiple machine learning models.
#### The Solution
We can leverage the combined power of several AWS services to achieve this:
* **Data Ingestion:** Amazon Kinesis Data Streams can ingest the high-volume transaction data in real-time.
* **Data Processing:** We can use AWS Lambda functions triggered by Kinesis to perform initial data transformation and filtering.
* **Machine Learning:** Amazon SageMaker hosts the trained fraud detection models. Multiple models can be deployed to handle different fraud types or data patterns.
* **Real-Time Inference:** API Gateway routes incoming transaction data to the appropriate SageMaker endpoints for real-time inference.
* **Orchestration:** Amazon EKS orchestrates the entire system. We can use Kubernetes Deployments to ensure high availability of our inference endpoints and leverage Horizontal Pod Autoscaling to dynamically adjust the number of pods based on real-time traffic.
#### Benefits
This architecture provides several advantages:
* **Scalability and Fault Tolerance:** EKS, coupled with Kubernetes' autoscaling features, ensures the system can handle fluctuations in data volume and maintain high availability.
* **Real-time Performance:** Kinesis and Lambda provide real-time data processing capabilities, while SageMaker enables low-latency inference.
* **Flexibility:** The use of microservices allows for easy integration of new data sources, models, or analysis components.
This example demonstrates how the combined power of EKS and other AWS services enables us to build sophisticated, scalable, and real-time applications. By carefully considering the strengths of each service and leveraging the right tool for the job, we can architect powerful and efficient solutions in the cloud.
| virajlakshitha | |
1,887,716 | .NET Core WebAPI (Auto)Binding Parameters When Calling Via JavaScript Fetch | Get the Source Code For This Article All of the source code for this article is located at... | 0 | 2024-06-14T15:27:13 | https://dev.to/raddevus/net-core-webapi-autobinding-parameters-when-calling-via-javascript-fetch-31e4 | ## Get the Source Code For This Article
All of the source code for this article is [located at my github repo](https://github.com/raddevus/BindApi). It's all C# .NET Core 8.x and JavaScript code.
## Introduction
This is a fast article with multiple examples of how to leverage the user of .NET Core WebAPI Auto-Binding feature. I know this is often called Model Binding, but my examples cover the case where you are just passing in one parameter value to a WebAPI method.
I also wrote this up at my blog in a slightly less refined article so you can check there for more details & to post comments if you like: [JavaScript Fetch With .NET Core WebAPI: Fetch Method Examples For Auto Binding – Build In Public Developer](https://buildip.dev/?p=88)
## How This Article Will Work
I will provide two things for every example so you can see exactly how the Auto-Binding feature works in .NET Core WebAPI.
## WebAPI method definitions (sample code via minimal API)
1. JavaScript Fetch examples you can use to POST to the WebAPI & see the result
WebAPI Parameter Attributes
2. .NET Core WebAPI methods allow you to mark parameters with a numnber of different attributes:
- [FromQuery]
- [FromForm]
- [FromBody]
- [FromHeader]
- [FromServices]*
- [FromKeyedServices]*
*The last two are brand new to .NET Core 8.x & I will not cover them here. However, I will cover the first four Attributes with full examples.
## Background
While writing another article where every user gets their own database (coming soon) I hit an issue with Auto-Binding parameters in .NET Core WebAPIs.
I have written a number of .NET Core WebAPIs but I've noticed that at times it has been easier than others. I generally like my WebAPIs to use [FromBody] to get the data from the posted body.
However, I discovered the exact reason why this would fail for me in certain situations.
## Using FromQuery On the WebAPI Parameter
Let's start out with what I consider the simplest method of posting data, using the [FromQuery] attribute on the WebAPI method.
### Source Code
I'll add the shortest amount of code here that makes it possible to create a quick discussion but if you want to see the source code you can download it from the top of this article or get it at my GitHub repo.
I'll create very small project of minimal WebAPIs and the methods will be named the same in almost every case, except they will include a number for each example so you can fired up the WebAPI locally and try the examples yourself if you like.
## Start WebAPI: Use Browser To Test
Once you start the WebAPI (from the downloaded code) you can load the URL and use your browser console to use JavaScript Fetch API to POST to the WebAPI. Here's snapshot of what that looks like:
## [FromQuery] Sample Code
C#
`[HttpPost] public ActionResult RegisterUser1([FromQuery] string uuid)`
In our Minimal API you will see this method defined in the following way:
C#
```
app.MapPost("/RegisterUser1", IResult ([FromQuery] string uuid) => {
return Results.Ok(new { Message = $"QUERY - You sent in uuid: {uuid}" });
});
```
## JavaScript Fetch For [FromQuery]
JavaScript
```
fetch(`http://localhost:5247/RegisterUser1?uuid=987-fake-uuid-1234`,
{method: 'POST'})
.then(response => response.json())
.then(data => console.log(data));
```
That one is easy enough. If you provide the `queryString` item (?uuid) in the URL then the item will be auto-bound to the uuid string variable and you'll get a valid result back. However, if you don't provide the `queryString` value, then an error will occur in the WebAPI when it attempts to auto-bind.
### Error
An unhandled exception has occurred while executing the request.
Microsoft.AspNetCore.Http.BadHttpRequestException:
Required parameter "string uuid" was not provided from query string.
## Using FromForm On the WebAPI Parameter
Let's define our second WebAPI method using the [FromForm] attribute.
C#
```
app.MapPost("/RegisterUser2", IResult ([FromForm] string uuid) => {
return Results.Ok(new { Message = $"FORM - You sent in uuid: {uuid}" });
})
```
### NOTE - AntiForgery
As soon as I started running Fetch against the command above, I started getting an odd error message on the WebAPI side which looked like:
`Unhandled exception. System.InvalidOperationException: Unable to find the required
services. Please add all the required services by calling
'IServiceCollection.AddAntiforgery' in the application startup code.
at Microsoft.AspNetCore.Builder
.AntiforgeryApplicationBuilderExtensions
.VerifyAntiforgeryServicesAreRegistered(IApplicationBuilder builder)`
## Breaking Change To .NET Core Minimal WebAPIs
Luckily I was able to search and discover what the problem is and how to fix it. Sheesh!
[Breaking change: IFormFile parameters require anti-forgery checks - .NET | Microsoft Learn](https://learn.microsoft.com/en-us/dotnet/core/compatibility/aspnet-core/8.0/antiforgery-checks)
## Slightly Changed WebAPI for FromForm
C#
```
app.MapPost("/RegisterUser2", IResult ([FromForm] string uuid) => {
return Results.Ok(new { Message = $"FORM - You sent in uuid: {uuid}" });
})
.DisableAntiforgery()
```
Sheesh! It's always something!
## JS Fetch Call For FromForm
There's some setup to pass our data on a web form. First we have to create the FormData object and add our name/value pairs. After that we can post the data.
## JavaScript
```
// 1. Create the FormData object
var fd = new FormData();
// 2. Append the name/value pair(s) for values you want to send
fd.append("uuid", "123-test2-2345-uuid-551");
fetch(`http://localhost:5247/RegisterUser2`,{
method:'POST',
body:fd, // add the FormData object to the body data which will be posted
})
.then(response => response.json())
.then(data => console.log(data));
```
Now that we've used two different attributes that have worked well. Let's delve into using [FromBody] attribute which will present great difficulty.
## Using FromBody On the WebAPI Parameter
C#
```
app.MapPost("/RegisterUser3", IResult ([FromBody] string uuid) => {
return Results.Ok(new { Message = $"FORM - You sent in uuid: {uuid}" });
})
```
## JavaScript Fetch Call for FromBody Is Problematic
At first look, this one should be easy, because you may think you should just be able to pass in a string value on the body. That's what I thought, anyways.
## Doesn't Work
JavaScript
```
fetch(`http://localhost:5247/RegisterUser3`,{
method:'POST',
body:"yaka-yaka",
})
.then(response => response.json())
.then(data => console.log(data));
```
However, that won't even make it past your browser, because it expects you to define an object (between two { } curly braces) for the body.
Next, you may believe you can just create an object which includes the name of the target param (uuid) and pass that, something like the following:
## Doesn't Work 2
JavaScript
```
var data = {"uuid":"yaka-yaka"};
fetch(`http://localhost:5247/RegisterUser3`,{
method:'POST',
body:data,
})
.then(response => response.json())
.then(data => console.log(data));
```
That doesn't work and won't get past your browser either. Again, it believes the body object is constructed improperly.
## Doesn't Work 3
JavaScript
```
fetch(`http://localhost:5247/RegisterUser3`,{
method:'POST',
body:{"uuid":"this-is-uuid-123"},
})
.then(response => response.json())
.then(data => console.log(data));
```
Still doesn't work. you will get a `415 Unsupported Media type`. So you need to add the Content-Type object and set it to JSON so the Fetch call knows you intend to make the call with JSON. That has happened because you added the curly brackets to the body.
## Doesn't Work 4: But Does Hit WebAPI
This one does actually hit the WebAPI.
JavaScript
```
fetch(`http://localhost:5247/RegisterUser3`,{
method:'POST',
body:{"uuid":"this-is-uuid-123"},
headers: {
'Content-type':'application/json; charset=UTF-8',
},
})
.then(response => response.json())
.then(data => console.log(data));
```
However, now you get the error from the Server which states:
## Auto-Bind Error: WebAPI Couldn't Bind to Variable
`Microsoft.AspNetCore.Http.BadHttpRequestException: Failed to read parameter
"string uuid" from the request body as JSON.`
This is an auto-bind error, because the WebAPI didn't see the uuid value, even though we did pass it in with our body object.
At this point I was flabbergasted.
## What's The Issue: How Do You Solve It?
Well, you can't solve it on the JavaScript side. Come to find out, you cannot pass a string value directly to the WebAPI as a parameter. Instead you have to create a server-side object that matches the client-side object.
## Creating The Server-Side Object
Here's the new class we'll add to our Program.cs (just for sample purposes):
C#
```
record UuidHolder{
public string uuid{get;set;}
}
```
Define RegisterUser4 For Working Example
We will use the following WebAPI for our working example:
C#
```
app.MapPost("/RegisterUser4", IResult ([FromBody] UuidHolder uuid) => {
return Results.Ok(new { Message = $"BODY - You sent in uuid: {uuid.uuid}" });
})
```
This will keep the RegisterUser3 WebAPI method so you can see that it is impossible to get it to bind.
Now, we have to slightly alter our JavaScript Fetch call to also use JSON.stringify() and then everything will work.
## JS Fetch For FromBody & Using JSON.Stringify
JavaScript
```
fetch(`http://localhost:5247/RegisterUser4`,{
method:'POST',
body:JSON.stringify({"uuid":"this-is-uuid-123"}),
headers: {
'Content-type':'application/json; charset=UTF-8',
},
})
.then(response => response.json())
.then(data => console.log(data));
```
It works!
I thought that sending the data in on the body would've been the easiest way, but it is the most difficult. Let's cover the last one (FromHeader) and wrap this up.
## Using FromHeader On the WebAPI Parameter
Here's the last one which allows us to put our data in the header and post it.
C#
```
app.MapPost("/RegisterUser5", IResult ([FromHeader] string uuid) => {
return Results.Ok(new { Message = $"HEADER - You sent in uuid: {uuid}" });
})
```
## JavaScript Fetch For [FromHeader]
This one is very easy to do, but I'm not entirely sure why we'd post data using headers.
However, it does help us auto-bind data to some header value we may have.
C#
```
fetch(`http://localhost:5247/RegisterUser5`,{
method:'POST',
headers: {
'Content-type':'application/json; charset=UTF-8',
"uuid":"123-456-789"
},
})
.then(response => response.json())
.then(data => console.log(data));
```
Now, you can auto-bind in .NET Core WebAPI methods using any of the basic attributes and your data will get through. When it doesn't, you'll understand where to look.
## Bonus Material OpenApi Documentation
Wow! I just discovered (after publishing my article) that I actually got some free documentation of my APIs via OpenApi.
The dotnet project template added a few lines in the Program.cs file which handles generating documentation.
C#
```
app.UseSwagger();
app.UseSwaggerUI();
```
Then, on each post method I had added the following call:
`.WithOpenApi();`
## How Do You View OpenApi Documentation?
I searched all over the web and scanned this lengthy document that explains OpenApi documentation but it never showed me how to view the docs. It's crazy! I finally found out how to view the autogenerated docs here.
To examine the documents start up the webapi and go to : `http://localhost:5247/swagger`
You will see the following:
## You Can Also Try Out The Api Via Curl
The document is active and you can now try out the API via the UI. It uses curl in the background to post to the webapi and you're going to see that curl can post properly to the body method. However, it fails on the FromForm one. Really interesting. | raddevus | |
1,888,755 | Joining dev | Hi, I am very excited to work with you thanks, working with you, it's my honour | 0 | 2024-06-14T15:24:00 | https://dev.to/ibrahim_08f006e885b7d5590/joining-dev-2p1a | Hi, I am very excited to work with you thanks, working with you, it's my honour | ibrahim_08f006e885b7d5590 | |
1,888,754 | Joining dev | Hi, I am very excited to work with you thanks, working with you, it's my honour | 0 | 2024-06-14T15:23:57 | https://dev.to/ibrahim_08f006e885b7d5590/joining-dev-161p | Hi, I am very excited to work with you thanks, working with you, it's my honour | ibrahim_08f006e885b7d5590 | |
1,888,753 | I need an web developer who can create website for my college project for free. please | A post by Umar Zaib | 0 | 2024-06-14T15:23:54 | https://dev.to/umarzzaib/i-need-an-web-developer-who-can-create-website-for-my-college-project-for-free-please-22p5 | umarzzaib | ||
1,884,979 | Introduction to Docker Integration in GitLab CI/CD Pipelines | Introduction Brief Overview of Docker Docker is a platform that allows developers to... | 0 | 2024-06-14T15:22:08 | https://dev.to/arbythecoder/introduction-to-docker-integration-in-gitlab-cicd-pipelines-4lg6 | beginners, gitlab, cicd, docker | #### Introduction
**Brief Overview of Docker**
Docker is a platform that allows developers to package applications and their dependencies into a standardized unit called a container. Containers are lightweight, portable, and can run on any environment that supports Docker, ensuring consistency across development, testing, and production environments.
**Importance of Docker in DevOps**
Docker plays a crucial role in DevOps by enabling continuous integration and continuous deployment (CI/CD). It helps streamline the software development lifecycle, reduce conflicts between different development environments, and improve scalability and resource utilization.
#### Getting Started with Docker
**What is Docker?**
Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Containers allow a developer to package up an application with all parts it needs, such as libraries and other dependencies, and ship it all out as one package.
**Key Concepts**
- **Images**: Read-only templates used to create containers. They are built from Dockerfiles.
- **Containers**: Running instances of Docker images. They are isolated from the host system and other containers.
- **Dockerfile**: A text file that contains instructions for building a Docker image.
#### Setting Up Docker
**Installing Docker**
To install Docker, follow the instructions for your operating system on the [Docker installation page](https://docs.docker.com/get-docker/).
**Basic Docker Commands**
- `docker run`: Run a container from an image.
- `docker build`: Build an image from a Dockerfile.
- `docker images`: List all Docker images on your system.
- `docker ps`: List all running containers.
#### Integrating Docker with GitLab CI/CD
**Overview of CI/CD**
CI/CD is a method to frequently deliver apps to customers by introducing automation into the stages of app development. The main concepts attributed to CI/CD are continuous integration, continuous deployment, and continuous delivery.
**Benefits of Using Docker in CI/CD Pipelines**
- **Consistency**: Ensures the same environment in development, testing, and production.
- **Scalability**: Easily scale applications horizontally.
- **Isolation**: Each container runs in isolation, which reduces conflicts and improves security.
#### Step-by-Step Guide
**Setting Up a GitLab Project**
1. **Create a GitLab Account**: Sign up at [GitLab](https://gitlab.com).
2. **Create a New Project**:
- Click on the "New Project" button.
- Select "Create blank project".
- Fill in the project name (e.g., `DockerCIPipeline`), description (optional), and set the visibility level.
- Click "Create project".
**Writing a Dockerfile**
Create a file named `Dockerfile` in your project directory with the following content:
```dockerfile
# Use an official Python runtime as a parent image
FROM python:3.8-slim
# Set the working directory
WORKDIR /app
# Copy whats in app.py
COPY . /app
# Install pkgs specified in requirements.txt
RUN pip install --no-cache-dir -r requirements.txt
# Make port 80 available to the world outside this container
EXPOSE 80
# Define environment variable
ENV NAME World
# Run app.py when the container launches
CMD ["python", "app.py"]
```
**Creating a .gitlab-ci.yml File for Docker Integration**
Create a `.gitlab-ci.yml` file in your project directory with the following content:
```yaml
stages:
- build
- push
variables:
DOCKER_DRIVER: overlay2
IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
build_image:
stage: build
image: docker:latest
services:
- docker:dind
script:
- docker build -t $IMAGE_TAG .
- echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER --password-stdin $CI_REGISTRY
- docker tag $IMAGE_TAG $CI_REGISTRY_IMAGE:latest
push_image:
stage: push
image: docker:latest
services:
- docker:dind
script:
- echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER --password-stdin $CI_REGISTRY
- docker push $IMAGE_TAG
- docker push $CI_REGISTRY_IMAGE:latest
```
**Pushing Docker Images to GitLab's Container Registry**
1. **Set Up CI/CD Variables**:
- Go to your GitLab project.
- Navigate to **Settings > CI/CD > Variables**.
- Add the following variables:
- `CI_REGISTRY`: Your GitLab container registry URL.
- `CI_REGISTRY_USER`: Your GitLab username.
- `CI_REGISTRY_PASSWORD`: Your GitLab access token (create one from your GitLab profile settings).
2. **Commit and Push Changes**:
```sh
git add Dockerfile .gitlab-ci.yml
git commit -m "Add Dockerfile and CI/CD pipeline configuration"
git push origin main
```
#### Monitoring and Verification
**Monitor the Pipeline**:
1. Go to your GitLab project page.
2. Navigate to **CI/CD > Pipelines**.
3. You should see a new pipeline triggered by your recent push.
4. Click on the pipeline to monitor its progress and view job logs.
**Verify Docker Image**:
1. After the pipeline completes, go to **Packages & Registries > Container Registry** in your GitLab project.
2. You should see your Docker image listed there.
#### Conclusion
**Recap of Key Points**:
- Docker containers offer a consistent, isolated environment for your applications.
- GitLab CI/CD pipelines can be configured to build and push Docker images automatically.
- Monitoring and verifying pipelines and Docker images ensure a smooth CI/CD process.
**Next Steps**:
- Explore advanced Docker features like multi-stage builds.
- Integrate more complex testing frameworks.
- Experiment with deploying Docker containers to cloud platforms.
#### Resources
- [Docker Documentation](https://docs.docker.com/)
- [GitLab CI/CD Documentation](https://docs.gitlab.com/ee/ci/)
- [Pytest Documentation](https://docs.pytest.org/en/stable/)
--- | arbythecoder |
1,888,683 | Real-Time Sentiment Analysis using PySpark and FastAPI | ⏱ Real-Time Sentiment Analysis using PySpark and FastAPI In today's landscape, many APIs, including... | 0 | 2024-06-14T15:15:49 | https://dev.to/raghavtwenty/real-time-sentiment-analysis-using-pyspark-and-fastapi-19jl | bigdata, spark, python, fastapi | ⏱ Real-Time Sentiment Analysis using PySpark and FastAPI
In today's landscape, many APIs, including Twitter's, often require payment for real-time streaming access.
💻 To overcome this hurdle, I've developed my own FastAPI solution capable of delivering string values akin to Twitter's API and most of the APIs. Leveraging PySpark for real-time Big Data stream analysis.
💡 The potential applications for this solution are limitless. From machine learning to sentiment analysis and beyond, Offers a versatile foundation for various data-driven tasks.
Detailed ReadMe & Code
GitHub: [github code](https://github.com/raghavtwenty/pyspark-realtime-streaming-sentiment-analysis)
| raghavtwenty |
1,888,682 | Discussion: What makes good Content on DEV Community? 🚀🌟 | Hello fellow dev, I hope you are all doing great. I've been wondering 🤔 what makes a post... | 0 | 2024-06-14T15:15:19 | https://dev.to/jennavisions/discussion-what-makes-good-content-on-dev-community-56im | watercooler, discuss, community, learning |
Hello fellow dev,
I hope you are all doing great.
I've been wondering 🤔 what makes a post beneficial to the DEV community.
There are many great posts out here, but I've noticed a mix of quality.
For example; incomplete posts, some relevant ones contain grammar and punctuation mistakes, while others seem unrelated to this platform.
I acknowledge the tag for off-topic subjects, but I've noticed that some posts lack it.
How can we continuously ensure high-quality content and provide valuable experiences for everyone?
**Some points to consider:**
- What makes a post valuable and informative for you as a developer?
- What criteria would you use to evaluate a post's quality (low or high) and relevance to the community?
- How important are clarity, accuracy, and usefulness when reading content?
- Have you noticed any posts that seem irrelevant or contain grammar and punctuation errors? How do these affect your experience?
- What are other points that you have noticed, good or bad?
I look forward to your thoughts and feedback in the comment section below! 💬 🙂
I wish you all a happy weekend ahead. 🌞
**Disclaimer:**
_I am not an expert and am new to writing and contributing to this community. I aim to share, learn, and grow together while promoting better contributions. If you have any concerns about the relevance or duplication of my posts, please notify me._
_Please note that this post aims to improve the community experience and is not directed at any specific individual._ | jennavisions |
1,888,681 | LeetCode Day8 String Part.2 | LeetCode No.151 Reverse Words in a String Given an input string s, reverse the order of... | 0 | 2024-06-14T15:11:17 | https://dev.to/flame_chan_llll/leetcode-day8-string-part2-5bcg | leetcode, java, algorithms | ##LeetCode No.151 Reverse Words in a String
Given an input string s, reverse the order of the words.
A word is defined as a sequence of non-space characters. The words in s will be separated by at least one space.
Return a string of the words in reverse order concatenated by a single space.
Note that s may contain leading or trailing spaces or multiple spaces between two words. The returned string should only have a single space separating the words. Do not include any extra spaces.
Example 1:
Input: s = "the sky is blue"
Output: "blue is sky the"
Example 2:
Input: s = " hello world "
Output: "world hello"
Explanation: Your reversed string should not contain leading or trailing spaces.
Example 3:
Input: s = "a good example"
Output: "example good a"
Explanation: You need to reduce multiple spaces between two words to a single space in the reversed string.
Constraints:
1 <= s.length <= 104
s contains English letters (upper-case and lower-case), digits, and spaces ' '.
There is at least one word in s.
[Original Page](https://leetcode.com/problems/reverse-words-in-a-string/description/)
### Method 1
Simply the same as the reverse letter of a given String
Be careful:
- we need to cut the blank characters like space
- Sometimes there are several spaces continue to happen in the middle of the String
```
public String reverseWords(String s) {
s = s.trim();
String[] str = s.split("\\s+");
int left = 0;
int right = str.length-1;
while(left < right){
String temp = str[left];
str[left++] = str[right];
str[right--] = temp;
}
return String.join(" ",str);
}
```
Time: O(n) but split and loop and join, Space: O(n) String[] for O(n)
### Wrong Thought 1 Below
improve the time cut some redundant parts and we can do the swap in-place with O(n) space complexity
Also, double vector thought can still be used.
But instead of focusing on String in String[], we can focus on letters in String
but we need to double vector for each vector of exist double vector
like
before: left , right
now: leftStart, leftEnd, rightStart, rightEnd
I want to remove the inner extra space and swap the first word to the last word by letters and then the second word to the second last word
** But if we do it in-place the size of 1st word may not same as the last word, it will lose information and prevent us from realizing it**
So we change our mind!
### Method 2
we can reverse the whole String and then reverse each of the word during this process we can remove the blank characters.
---
<br>
## LeetCode No. 28. Find the Index of the First Occurrence in a String
Given two strings needle and haystack, return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.
Example 1:
Input: haystack = "sadbutsad", needle = "sad"
Output: 0
Explanation: "sad" occurs at index 0 and 6.
The first occurrence is at index 0, so we return 0.
Example 2:
Input: haystack = "leetcode", needle = "leeto"
Output: -1
Explanation: "leeto" did not occur in "leetcode", so we return -1.
Constraints:
1 <= haystack.length, needle.length <= 104
haystack and needle consist of only lowercase English characters.
[Original Page](https://leetcode.com/problems/find-the-index-of-the-first-occurrence-in-a-string/description/)
```
public int strStr(String haystack, String needle) {
if(haystack.length()<needle.length()){
return -1;
}
int start = 0;
while(start<haystack.length()-needle.length()+1){
if(haystack.charAt(start) == needle.charAt(0)){
boolean hasFound = true;
for(int i=1; i<needle.length(); i++){
if(! (haystack.charAt(start+i) == needle.charAt(i))){
hasFound = false;
break;
}
}
if(hasFound){
return start;
}
}
start++;
}
return -1;
}
```
It is not a hard question:
- make a loop to traverse the haystack
- when finding the letter in the haystack same as the first letter in the needle, we start another loop to see whether the needle is the subpart of the haystack
- During this evaluation process, we also need to record the start point!
- we need a flag to evaluate whether the needle is in haystack (only evaluate all element in needle) so we need a flag
- Time O(n`m) Space O(1)
---
<br>
## LeetCode No.459. Repeated Substring Pattern
Given a string s, check if it can be constructed by taking a substring of it and appending multiple copies of the substring together.
Example 1:
Input: s = "abab"
Output: true
Explanation: It is the substring "ab" twice.
Example 2:
Input: s = "aba"
Output: false
Example 3:
Input: s = "abcabcabcabc"
Output: true
Explanation: It is the substring "abc" four times or the substring "abcabc" twice.
[Original Page](https://leetcode.com/problems/repeated-substring-pattern/description/)
### Method 1
### Method 2
```
public boolean repeatedSubstringPattern(String s) {
if(s.length()<1){
return false;
}
List<String> list = new ArrayList<>();
int i = 1;
while(i < s.length()){
if(s.charAt(i) == s.charAt(0)){
list.add(s.substring(0,i));
}
i++;
}
```
```
for(String str: list){
int mod = s.length()%str.length();
if(mod !=0){
continue;
}
int num = s.length()/str.length();
StringBuffer sb = new StringBuffer(str);
for(i=0; i<num-1; i++){
sb.append(str);
}
if(s.equals(sb.toString())){
return true;
}
}
return false;
}
```
But it seems like the code is also O(m`n) time complexity.
| flame_chan_llll |
1,888,679 | Decorators and Generators in Python | Decorators and Generators in Python Python is a versatile and powerful programming... | 0 | 2024-06-14T15:10:05 | https://dev.to/romulogatto/decorators-and-generators-in-python-ejl | # Decorators and Generators in Python
Python is a versatile and powerful programming language that offers various features to simplify code organization and improve performance. Two such features are decorators and generators, which allow you to add functionality to your code and create iterable objects, respectively. In this article, we will explore what decorators and generators are, how they work, and how you can leverage them in your Python projects.
## Decorators
Decorators in Python are a way to modify the behavior of functions or classes without directly changing their source code. They provide a convenient mechanism for wrapping or altering the functionality of existing functions or classes.
### How Decorators Work
In Python, functions are first-class objects, which means they can be assigned to variables and passed as arguments to other functions. A decorator takes advantage of this feature by taking a function as input and returning another function with enhanced behavior.
Here's an example illustrating the basic structure of a decorator:
```python
def my_decorator(func):
def wrapper():
# Perform some actions before calling func()
print("Before function call")
# Call the original function
func()
# Perform some actions after calling func()
print("After function call")
return wrapper
@my_decorator
def my_function():
print("Inside my_function")
# Call the decorated function
my_function()
```
The `my_decorator` function takes in `func` as an argument, defines an inner `wrapper` function that adds additional functionality around `func`, and returns `wrapper`. By using the "@" symbol followed by the name of our decorator (`@my_decorator`) above our target function (`my_function`), we apply our decorator to it.
When we invoke `my_function()`, it actually calls `wrapper()` instead. This allows us to execute custom logic before calling `func()` (the original implementation) with additional actions afterward. In this example, "Before function call" is printed before executing `my_function()`, and "After function call" is printed afterward.
### Use Cases for Decorators
Decorators are incredibly useful in many scenarios, such as:
1. **Logging**: You can use decorators to log the input, output, and execution times of functions.
2. **Authentication/Authorization**: Decorators can ensure that only authenticated users have access to certain functions or routes in a web application.
3. **Error Handling**: Decorators help centralize error-handling logic by wrapping functions with try-catch blocks.
By using decorators, you can keep your codebase clean and modular by separating cross-cutting concerns from core business logic.
## Generators
Generators provide an elegant way to create iterators in Python. They allow you to define iterable sequences without having to build the entire sequence in memory at once.
### How Generators Work
In contrast to regular functions that return a value once and then exit, generators yield multiple values over time using the `yield` keyword. This allows the caller of a generator function to iterate over its results one at a time instead of loading all values into memory up front.
Here's an example demonstrating how generators work:
```python
def count_up_to(n):
i = 0
while i <= n:
yield i
i += 1
# Create a generator object
my_generator = count_up_to(5)
# Iterate over the generator's values
for num in my_generator:
print(num)
```
In this example, we define `count_up_to()` as our generator function that yields numbers up to a given limit (`n`). Instead of returning all numbers at once, it returns them incrementally whenever requested through iteration. By calling `count_up_to(5)`, we create an instance of our generator stored in `my_generator`. We then use a loop structure (`for num in my_generator`) to access each value one by one and print it.
Generators are especially helpful when dealing with large datasets, as they allow you to process elements in a stream-like fashion without having to store them all in memory.
### Use Cases for Generators
There are several situations where generators can be advantageous:
1. **Processing Large Datasets**: Generators can iteratively process data items from huge datasets that would otherwise not fit into memory.
2. **Infinite Sequences**: You can create generators that yield an infinite sequence of values, such as a stream of random numbers or prime numbers.
3. **Efficient Iteration**: If you just need to iterate through some data once without storing the whole collection in memory, generators offer a more resource-efficient solution than constructing lists or other iterable objects.
Generators provide a concise and efficient way of handling sequences and can improve performance while reducing memory usage.
## Conclusion
Decorators and generators are powerful concepts in Python that enhance code reusability, readability, and performance. Decorators let you add functionality before and/or after function execution dynamically, while generators enable the generation of sequence values on the fly instead of loading them all at once.
By leveraging decorators, you can separate concerns and write reusable code blocks independent of specific functions or classes. On the other hand, using generators allows you to handle large datasets efficiently while improving overall system performance.
In summary, decorators and generators give Python programmers additional tools for creating clean codebases with improved functionality. So go ahead and explore these features further – your future Python projects will thank you!
| romulogatto | |
1,888,678 | How to Enhance Your Business with Custom Gift Display Boxes? | If you care about maintaining the quality of your high-end beauty items, sturdy custom display boxes... | 0 | 2024-06-14T15:08:02 | https://dev.to/allien/how-to-enhance-your-business-with-custom-gift-display-boxes-4paa | If you care about maintaining the quality of your high-end beauty items, sturdy **[custom display boxes](https://imhpackaging.com/product-category/display-boxes/)** are the way to go. Customer satisfaction and loyalty will rise dramatically if the things they purchase from you are in good condition. In addition, having this client as a regular customer is a surefire way to increase sales. Because of this, distributing your gift line via custom gift display packaging boxes is a fantastic marketing strategy.
Research has shown that varying the color schemes used on gift packaging can positively impact customers. With attractive color schemes, you'd be able to attract more ladies. Hence, your gift appeal will increase. Custom gift display boxes with your company's logo are a clever marketing strategy. The catchphrases and product descriptions on these high-end boxes best entice customers to purchase. Your beauty shop and its wares will benefit greatly from these.
**Improve Brand Recognition with Custom Gift Display Packaging Boxes**
Premium gifts need to be packaged in boxes designed by renowned artists. When you open the box, you can use whatever strategy suits you best. Having a well-known brand name increases the likelihood of a product being purchased. Examine the gift box as if you were the end user. PVC-lined and sheet-lined boxes, reverse tuck end and straight tuck end boxes, and lidded, sleeved, windowed, and display boxes are just some of the various box packaging options.
Do what you want with the company's swag if you have permission. Makeup gift sets are the perfect present if you're looking to show someone special how much you care. These days, white custom gift display boxes are also very trendy. You may wish to utilize them as packaging because of how sleek and sophisticated they are. Once they have mastered it, customers will feel confident saying they can do it themselves.
**Sturdy, Cardboard Packaging Boxes for Your Products**
Designers create unique and eco-friendly cosmetic packaging.
There are a variety of attractive solutions available to customers. As these materials are of the most outstanding quality, you can rest assured that your belongings will be secure. The primary function of any storage facility is to ensure the security of the items housed within. Because of this, regular updates will be required. A packaging firm will struggle to succeed without it.
**Eco-Friendly Custom Packaging Boxes**
Customers' focus on "green" certifications grows as they purchase. Customers, even those who know your product is safe, won't give it a second glance if it doesn't have a green sticker. Moreover, using cardboard packaging for gifts would be the most eco-friendly option in this scenario. In a nutshell, this is excellent news for your company's financial situation and public standing.
These boxes are durable and eco-friendly. As such, they are ideal for the environmentally responsible transport of large quantities of wholesale or bulk goods. You should buy them if you have any concerns for humanity. Packaging with the brand's name or logo helps consumers identify and recall that product later. The coalition recommends consulting with specialized printers to learn about the range of services available to you. [Wholesale gift display boxes](https://imhpackaging.com/product/gift-display-boxes/) with your brand's name can be available in bulk.
**Boost Your Sales with Custom Gift Display Boxes**
Natural gifts that appear high quality and contain no potentially dangerous components are sometimes costly. So, if you buy high-end gifts, they should come in a similarly elegant box. Yet making gifts more noticeable on store shelves is as simple as switching up the packaging.
Users have the option of creating either a 2D or 3D logo. You can emboss a logo to help it stand out in the competitive market. Another method is to distribute cardboard boxes with the brand's logo. You'll sell more of what you're selling if it's easy to see at a glance. As a result, consumers will identify your brand as soon as they view the product.
**Final Thoughts**
It's possible to promote a product through a variety of methods. Depending on what you think would work best, you may preserve and ship your product in several ways. There are a lot of considerations to make before settling on a packaging house. All these factors and more make it such that unique gift display packaging boxes are immediately noticeable. This method of packaging and transporting goods ensures they arrive at their destination in one piece. It's the most thrilling experience to open a present, for example, since applications like TikTok and Instagram Reels came out. So, let's update the phrase to match the current vogue.
| allien | |
339,400 | Weekly Journal :: Retro Style | Like many of you, I have read my fair share of productivity and time management books. I repeatedly s... | 0 | 2020-05-20T01:09:10 | https://dev.to/dev0928/weekly-journal-retro-style-34gh | productivity, career | Like many of you, I have read my fair share of productivity and time management books. I repeatedly see many of them suggesting one habit - writing a daily journal. As soon I finish reading a book (well… sometimes even halfway through the book), I get pumped up and start writing a journal with a brand new notebook. First few days it will be rosy, then it will become like a chore and I will give up due to below reasons:
* Nothing different happens between two consecutive days
* My journal becomes boring as I end up writing similar types of things day-in and day-out.
But this time, I have decided to try something different - **weekly Journal** that too in a retrospective style.
<h5>My journal would focus on three key areas:</h5>
* Professional (what I achieved at work)
* Career Growth (what new skill I learnt / learning)
* Personal (relations, exercise, healthy eating etc…)
<h5>Journal would answer below questions:</h5>
* What worked well during the week?
* What didn’t go well?
* What I am going to try differently the following week?
Also, I am going to pick a day / time of the week I will most likely be free to write a journal and stick with it. Of course, with a brand new notebook :smile:
<h4>Benefits:</h4>
* With these journal entries, I am hoping to write a more meaningful performance review at the end of the year as I have a record of what I have been doing on a weekly basis at the professional level.
* After a few weeks of writing, I could see a pattern and catch myself in areas I am not making much progress.
<h4>Final Thoughts:</h4>
I am hoping I will stick with the habit this time as writing journal once per week is not too time consuming plus I am sure there will be something different to write about every week.
Thanks for reading!
| dev0928 |
1,888,676 | Mailing Made Easy: Cardboard Boxes, Postage Bags, and Paper Bags Explained | In our everyday activities, we often find ourselves in need of suitable packaging—whether it's for... | 0 | 2024-06-14T15:03:11 | https://dev.to/adnan_jahanian/mailing-made-easy-cardboard-boxes-postage-bags-and-paper-bags-explained-31h3 |
In our everyday activities, we often find ourselves in need of suitable packaging—whether it's for sending parcels, organising a party, or simply storing items. Understanding the different types of packaging available can help you make the best choice for your needs. Let's delve into some popular packaging options and their uses.
**Cardboard Boxes: The Reliable All-Rounder**
[Cardboard boxes](https://mrbags.co.uk/collections/cardboard-boxes) are essential for both personal and business use. These boxes offer a robust and dependable way to transport or store items securely. Whether you’re moving to a new home, mailing a package, or organising seasonal decorations, cardboard boxes are the ideal choice. Available in numerous sizes and strengths, you can easily find the perfect box to meet your requirements.
The primary advantage of cardboard boxes is their strength. Constructed from thick paperboard, they provide exceptional protection against impacts during transit. This makes them perfect for shipping items that need extra care, such as electronics, books, or fragile decorations.
Furthermore, cardboard boxes are an eco-friendly option. Most are manufactured from recycled materials and are themselves recyclable, contributing to a reduced carbon footprint. Businesses can also personalise these boxes with logos and designs, enhancing their professional image and brand recognition
**Postage Bags: Convenient and Cost-Effective**
For sending smaller items through the mail, postage bags are an excellent choice. These bags are lightweight yet durable, offering adequate protection for your items without adding unnecessary weight. They are perfect for sending documents, clothing, or other non-fragile items. The self-sealing feature of postage bags makes them both convenient and secure.
[Postage bags](https://mrbags.co.uk/collections/postage-bags) come in a range of sizes, allowing you to select the ideal one for your items. They are often made from strong plastic materials that withstand the rigours of postal handling. Their lightweight nature means they don’t significantly increase shipping costs, making them a cost-effective solution for frequent senders.
Additionally, postage bags can be either opaque or transparent. Opaque bags provide privacy for sensitive documents, while transparent ones are great for showcasing items in retail settings. Some postage bags even feature padded interiors for added protection, ensuring your items arrive safely.
**Mailing Bags: Extra Security for Delicate Items**
Mailing bags, similar to postage bags, are designed for sending items through the post. However, they often include additional protective features, such as bubble wrap linings, making them ideal for more delicate items. Available in various sizes, mailing bags can be customised with your branding, adding a professional touch to your deliveries.
[Mailing bags](https://mrbags.co.uk/collections/mailing-bags) are particularly useful for shipping items like jewellery, cosmetics, or small electronic gadgets. The bubble wrap interior absorbs shocks and prevents damage during transit. This is especially important for businesses aiming to maintain high customer satisfaction by ensuring their products arrive in perfect condition.
Moreover, mailing bags can be tamper-evident, providing extra security. This is crucial for sending valuable or sensitive items. The tear-resistant materials used in many mailing bags also deter theft and ensure that the contents remain intact until they reach their destination.
**Party Bags: Making Celebrations Memorable**
[Party bags ](https://mrbags.co.uk/collections/paper-bags/products/paper-bags-with-handles)are a delightful way to conclude any celebration. Whether it's a child's birthday party, a wedding, or any festive gathering, party bags filled with treats and small gifts are always appreciated. They come in various designs and colours, allowing you to match the theme of your event. Personalising party bags with names or messages can add a special touch.
Creating party bags can be an enjoyable and creative process. Fill them with sweets, toys, personalised gifts, or homemade treats. The possibilities are endless, and you can tailor the contents to suit the preferences of your guests. Party bags serve as tokens of appreciation, extending the joy of the event beyond its duration.
Additionally, party bags can be themed according to the occasion. For instance, wedding party bags might include mini bottles of champagne, scented candles, or customised trinkets. For children's parties, you could include colouring books, stickers, and small toys. Themed party bags add an extra layer of excitement and can leave a lasting impression on your guests.
**Paper Bags: Eco-Friendly and Versatile**
[Paper bags](https://mrbags.co.uk/collections/paper-bags) are a versatile and environmentally friendly packaging option. From carrying groceries to serving as gift bags, they are both practical and stylish. Available in various sizes, colours, and designs, paper bags are perfect for any occasion. They can be easily decorated, making them an excellent choice for personalised gifts or party favours.
One of the main benefits of paper bags is their eco-friendliness. Unlike plastic bags, paper bags are biodegradable and recyclable, reducing their environmental impact. This makes them a preferred choice for eco-conscious individuals and businesses.
Paper bags also offer a charming and rustic aesthetic. They can be easily customised with stamps, stickers, or handwritten messages, adding a personal touch to your packaging. For businesses, branding paper bags with your logo or design can enhance your brand image and make your products stand out.
Moreover, paper bags are sturdy and capable of holding a variety of items. They are perfect for carrying groceries, books, clothing, and more. Reinforced handles and bases ensure that paper bags can support heavier items without tearing, making them a reliable packaging option.
Why Choose MrBags.co.uk?
For all your packaging needs, look no further than MrBags.co.uk. As the best and most affordable supplier, they offer a wide range of products, including cardboard boxes, postage bags, mailing bags, party bags, and paper bags. With no minimum order requirement and next-day delivery, MrBags.co.uk ensures that you get what you need, when you need it, without breaking the bank.
[Mr Bags](https://mrbags.co.uk/) stands out for its commitment to quality and customer satisfaction. Their extensive selection of packaging solutions caters to a variety of needs, from everyday use to special occasions. Each product is carefully designed to offer maximum protection and convenience, ensuring that your items are safe and secure.
The no minimum order policy is particularly beneficial for small businesses and individuals who don’t need to buy in bulk. This flexibility allows you to purchase exactly what you need, reducing waste and saving costs. The next-day delivery service ensures that you receive your packaging materials promptly, so you can get on with your tasks without delay.
In addition to their excellent product range, MrBags.co.uk offers competitive pricing, making them the go-to choice for affordable packaging solutions. Their user-friendly website makes it easy to browse and order, and their customer service team is always ready to assist with any queries.
In conclusion, whether you need sturdy cardboard boxes, lightweight postage bags, protective mailing bags, festive party bags, or eco-friendly paper bags, MrBags.co.uk has got you covered. Their reliable, high-quality products and exceptional service make them the best choice for all your packaging needs. Happy packing!
| adnan_jahanian | |
1,888,675 | Debugging HTTP Traffic in kubectl port-forward with KFtray v0.11.7 | KFtray is a application that can be integrated into the system tray for easy interaction with... | 0 | 2024-06-14T15:01:40 | https://dev.to/hcavarsan/debugging-http-traffic-in-kubectl-port-forward-with-kftray-v0117-2p1d | kubernetes, devops, development, rust | KFtray is a application that can be integrated into the system tray for easy interaction with kubectl port-forward commands. A additional feature has joined recently in new version 0.11.7, one that can make HTTP traffic traces logs; this is an new method that simplifies debugging. This article provides a short guide on how to get started with the new feature.
## New in v0.11.7
- **Toggle HTTP Logs:** Easily enable/disable HTTP logs for configurations, saved in `$HOME/.kftray/http_logs/{config_id}_{local_port}`.
- **Clean Logs Folder:** New button to tidy up the logs folder.
- **Logging Controls:** Buttons to turn HTTP logging on or off for each configuration.
- **Open Logs with Default Editor:** Icon button to open HTTP logs with your default OS text editor.
- **Trace IDs for Requests and Responses:** Each request and response in the log has the same trace ID to help identify linked requests and responses when handling multiple parallel requests.
- **Better Connection Reliability:** Improvements in the KFtray server and desktop client.
- **Smaller Bundle Sizes:** More efficient installation.
## Using the New Feature - HTTP Traffic Logging
To utilize the new HTTP traffic logging feature, ensure you have the latest version of KFtray installed. Visit the [GitHub releases page](https://github.com/hcavarsan/kftray/releases) and download the latest version of KFtray for your operating system. Follow the installation instructions specific to your OS to complete the setup.
Once installed, Ensure the version number displayed in the logo icon tooltip matches the latest release `v0.11.7`.
### Step 1: Open KFtray
Launch KFtray by clicking its icon or typing `kftray` in the terminal if you installed it using Homebrew..This will open the main interface when you click the system tray icon, where you can manage your configurations.
### Step 2: Turn On HTTP Logging
1. **Open Settings:** Click the KFtray icon in your system tray and select the configuration panel from the menu.
2. **Start Port Forward**: Toggle the switch button to enable the configured port forwarding.
3. **Pick a Configuration:** In the same row of the switch button, click the hamburger icon to open the configurations from the forwarded port.
4. **Enable Logging:** Locate the "Enable HTTP Logging" and click it to turn on HTTP logging for that configuration.
### Step 3: View HTTP Logs
1. **Find Logs:** HTTP logs are automatically saved in the directory `$HOME/.kftray/http_logs/{config_id}_{local_port}`. Each log file is named based on the configuration ID and local port for easy identification.
2. **Open Logs:** To view the logs, click the log icon button next to your configuration. This will open the log file in your default text editor, allowing you to inspect the HTTP requests and responses.
3. **Trace IDs:** Each request and response in the log has the same trace ID, making it easier to identify linked requests and responses when handling multiple parallel requests.
#### HTTP Logs Sample
```bash
cat $HOME/.kftray/http_sniff/1_8080.log
----------------------------------------
Trace ID: 5525d312-5582-46ad-85d1-0fd3710f824e
Request at: 2024-06-13T15:34:09.756706+00:00
Method: GET
Path: /json
Version: 1
Headers:
Host: 127.0.0.1:8081
Connection: keep-alive
sec-ch-ua: "Not/A)Brand";v="8", "Chromium";v="126", "Google Chrome";v="126"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "macOS"
Upgrade-Insecure-Requests: 1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate, br, zstd
Accept-Language: en-US,en;q=0.9,pt;q=0.8
Body:
<empty>
----------------------------------------
Trace ID: 5525d312-5582-46ad-85d1-0fd3710f824e
Response at: 2024-06-13T15:34:09.901304+00:00
Took: 144 ms
Status: 200
Headers:
Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: *
Content-Length: 421
Content-Type: application/json; encoding=utf-8
Date: Thu, 13 Jun 2024 15:34:10 GMT
Body:
{
"slideshow": {
"author": "Yours Truly",
"date": "date of publication",
"slides": [
{
"title": "Wake up to WonderWidgets!",
"type": "all"
},
{
"items": [
"Why <em>WonderWidgets</em> are great",
"Who <em>buys</em> WonderWidgets"
],
"title": "Overview",
"type": "all"
}
],
"title": "Sample Slide Show"
}
}
```
### Step 4: Clean Logs Folder
To manage disk space and keep your logs organized, you can clean the logs folder and check the size of the logs folder from kftray.
1. **Open Main Menu:** Click the system tray icon to open the main window, then click the hamburger icon in the bottom-left corner. You should see a button `Prune Logs (0.00 MB)` that displays the size of the HTTP logs folder.
2. **Prune Logs:** Click the `Prune Logs` button to remove all the HTTP log files from the logs folder and reclaim disk space.
## Real-World Use Cases
### Debugging CLI Tools
When using CLI tools that abstract HTTP calls, such as LocalStack, it can be challenging to debug the underlying HTTP requests and responses. HTTP logging in KFtray can help you capture and analyze these interactions.
**Example:** If you're using a CLI tool like LocalStack to simulate AWS services locally, enable HTTP logging for the configurations that interact with LocalStack. The logs will capture all HTTP requests and responses made by the CLI tool, including trace IDs to link related requests and responses. This makes it easier to debug issues and understand the behavior of the CLI tool.
### Save History of HTTP Requests and Don't Lose Made Requests
By enabling HTTP logging, you can save a history of all HTTP requests and responses. This ensures that you don't lose any made requests, which is especially useful for debugging and auditing purposes.
**Example:** If you need to review past interactions or troubleshoot issues that occurred previously, the saved logs will provide a complete history of HTTP traffic, including trace IDs to link related requests and responses.
### Fixing Microservices Issues
When developing a microservice architecture, use HTTP logging to view detailed request and response data. This helps identify issues in interactions between services.
**Example:** If a service interaction fails intermittently, enable HTTP logging for the configurations involved. Use the logs to pinpoint the problem, such as incorrect request parameters or unexpected response formats. The trace IDs will help you link related requests and responses.
### Security Audits
Capture and review HTTP traffic logs to ensure no sensitive data is exposed in requests or responses. This is crucial for maintaining security compliance.
**Example:** Enable HTTP logging for configurations handling sensitive data. Regularly review the logs to verify that no private information is being leaked. The trace IDs will help you track the flow of sensitive data through your system.
### Solving Intermittent Problems
Capture HTTP traffic during the occurrence of intermittent issues to find patterns or anomalies that may be causing the problems.
**Example:** Users report sporadic issues with your web application. Enable HTTP logging for the related configurations and capture traffic during the problem periods. Analyze the logs to identify any patterns or anomalies. Use the trace IDs to correlate requests and responses during the issue periods.
### Boosting Performance
Monitor HTTP logs to identify slow endpoints and optimize the performance of your application.
**Example:** If certain endpoints are slow, enable HTTP logging for those configurations. Use the logs to identify the bottlenecks and optimize the endpoints for better performance. Trace IDs will help you follow the request-response cycle and pinpoint delays.
## Wrap-Up
The new logging of HTTP traffic in KFtray v0.11.7 takes the work out of debugging and simplifies it. Turn logging on for your configurations and you'll be fixing issues in minutes. Trace IDs enable easy request and response correlation even when handling multiple requests in parallel.
**Star us on [GitHub](https://github.com/hcavarsan/kftray) ⭐**
### Quick Demo
This video demonstrates the complete flow of this new feature.
{% youtube https://www.youtube.com/watch?v=Z1rCFu3VZAQ %}
| hcavarsan |
1,883,447 | NumPy's Argmax? How it Finds Max Elements from Arrays | NumPy is most often used to handle or work with arrays (multidimensional, masked) and matrices. It... | 0 | 2024-06-14T15:00:00 | https://geekpython.in/numpy-argmax-function-in-python | numpy, python | [NumPy](https://numpy.org/doc/stable/user/whatisnumpy.html) is most often used to handle or work with arrays (multidimensional, masked) and matrices. It has a collection of functions and methods to operate on arrays like statistical operations, mathematical and logical operations, shape manipulation, linear algebra, and much more.
## Argmax function
[numpy.argmax()](https://numpy.org/doc/stable/reference/generated/numpy.argmax.html) is one of the functions provided by NumPy that is used to **return the indices of the maximum element along an axis from the specified array**.
### Syntax
> numpy.argmax(a, axis=None, out=None)
Parameters:
- `a` - The input array we will work on
- `axis` - It is optional. We can specify an axis like 1 or 0 to find the maximum value index horizontally or vertically.
- `out` - By default, it is None. It provides a feature to insert the output to the out array, but the array should be of appropriate shape and dtype.
> Return value
>The array of integers is returned with the indices of max values from the array `a` with the same shape as `a.shape` with the dimension along the ***axis*** removed.
### Finding the index of the max element
Let's see the basic example to find the index of the max element in the array.
**Working with a 1D array without specifying the axis**
```python
# Importing Numpy
import numpy as np
# Working with a 1D array
inp_arr = np.array([5, 2, 9, 4, 2])
# Applying argmax() function
max_elem_index = np.argmax(inp_arr)
# Printing index
print("MAX ELEMENT INDEX:", max_elem_index)
```
**Output**
```python
MAX ELEMENT INDEX: 2
```
**Working with a 2D array without specifying the axis**
When we work with 2D arrays in numpy and try to find the index of the max element without specifying the axis, the array we are working on has the element index the same as the 1D array or flattened array.
```python
# Importing Numpy
import numpy as np
# Creating 2D array
arr = np.random.randint(16, size=(4, 4))
# Array preview
print("INPUT ARRAY: \n", arr)
# Applying argmax()
elem_index = np.argmax(arr)
# Displaying max element index
print("\nMAX ELEMENT INDEX:", elem_index)
```
**Output**
```python
INPUT ARRAY:
[[ 5 5 4 12]
[12 15 13 0]
[11 13 2 6]
[ 6 8 8 9]]
MAX ELEMENT INDEX: 5
```
### Finding the index of the max element along the axis
Things will change when we specify the axis and try to find the index of the max element along it.
**When the axis is 0**
When we specify the `axis=0`, then the ***argmax*** function will find the index of the max element vertically in the multidimensional array that the user specified. Let's understand it by an illustration below.
> In the above illustration, *argmax()* function returned the max element index from the 1<sup>st</sup> column which is **1** and then returned the max element index from the 2<sup>nd</sup> column which is again **1**, and the same does for the 3<sup>rd</sup> and the 4<sup>th</sup> column.
```python
# Importing Numpy
import numpy as np
# Creating 2D array
arr = np.random.randint(16, size=(4, 4))
# Array preview
print("INPUT ARRAY: \n", arr)
# Applying argmax()
elem_index = np.argmax(arr, axis=0)
# Displaying max element index
print("\nMAX ELEMENT INDEX:", elem_index)
```
**Output**
```python
INPUT ARRAY:
[[ 8 6 10 3]
[ 4 5 9 1]
[ 6 15 13 13]
[ 4 14 15 13]]
MAX ELEMENT INDEX: [0 2 3 2]
```
**When the axis is 1**
When we specify the `axis=1`, the ***argmax*** function will find the index of the max element horizontally in the multidimensional array that the user specified. Let's understand it by an illustration below.
> In the above illustration, *argmax()* function returned the max element index from the 1<sup>st</sup> row which is **2** and then returned the max element index from the 2<sup>nd</sup> row which is **1**, and the same does for the 3<sup>rd</sup> and the 4<sup>th</sup> row.
**Code example**
```python
# Importing Numpy
import numpy as np
# Creating 2D array
arr = np.random.randint(12, size=(4, 3))
# Array preview
print("INPUT ARRAY: \n", arr)
# Applying argmax()
elem_index = np.argmax(arr, axis=1)
# Displaying max element index
print("\nMAX ELEMENT INDEX:", elem_index)
```
**Output**
```python
INPUT ARRAY:
[[ 7 8 0]
[ 3 0 11]
[ 7 6 0]
[10 8 1]]
MAX ELEMENT INDEX: [1 2 0 0]
```
### Multiple occurrences of the highest value
Sometimes, we can come across multidimensional arrays with multiple occurrences of the highest values along the particular axis, then what will happen?
The ***argmax()*** function will return **the index of the highest value that occurs first in a particular axis**.
> Illustration showing multiple occurrences of the highest values along axis 0.
> Illustration showing multiple occurrences of the highest values along axis 1.
**Code example**
```python
# Importing Numpy
import numpy as np
# Defining the array
arr = np.array([[2, 14, 9, 4, 5],
[7, 14, 53, 10, 4],
[91, 2, 41, 6, 91]])
# Displaying the highest element index along axis 0
print("MAX ELEMENT INDEX:", np.argmax(arr, axis=0))
# Displaying the highest element index along axis 1
print("\nMAX ELEMENT INDEX:", np.argmax(arr, axis=1))
# Flattening the array, making it a 1D array
flattened_arr = arr.flatten()
print("\nThe array is flattened into 1D array:", flattened_arr)
# Displaying the highest element index
print("\nMAX ELEMENT INDEX:", np.argmax(flattened_arr))
```
**Output**
```python
MAX ELEMENT INDEX: [2 0 1 1 2]
MAX ELEMENT INDEX: [1 2 0]
The array is flattened into 1D array: [ 2 14 9 4 5 7 14 53 10 4 91 2 41 6 91]
MAX ELEMENT INDEX: 10
```
**Explanation**
In the above code, when we try to find the indices of the max elements along the ***axis 0***, we got an array with values `[2 0 1 1 2]`, if we look at the **2<sup>nd</sup>** column, 14 is the highest value at the **0<sup>th</sup>** and the **1<sup>st</sup>** index, we got `0` because the value 14 at the 0<sup>th</sup> index occurred first when finding the highest value.
The same goes for the array we obtained in the second output when we provided the ***axis 1***, in the **3<sup>rd</sup>** row, 91 is the highest value at the **0<sup>th</sup>** and the **4<sup>th</sup>** index, the value 91 at the **0<sup>th</sup>** index occurred first when finding the highest value hence we got output `0`.
### Using the ***out*** parameter
The `out` parameter in ***numpy.argmax()*** function is optional and by default it is None.
The `out` parameter stores the output array(containing indices of the max elements in a particular axis) in a numpy array. The array specified in the out parameter should be of **shape** and **dtype**, the same as the input array.
**Code Example**
```python
# Importing Numpy
import numpy as np
# Creating array filled with zeroes which then be replaced
out_array = np.zeros((4,), dtype=int)
print("ARRAY w/ ZEROES:", out_array)
# Input array
arr = np.random.randint(16, size=(4, 4))
print("INPUT ARRAY:\n", arr)
# Storing the indices of the max elements(axis=1) in the out_array
print("\nAXIS 1:", np.argmax(arr, axis=1, out=out_array))
# Storing the indices of the max elements(axis=0) in the out_array
print("\nAXIS 0:", np.argmax(arr, axis=0, out=out_array))
```
**Output**
```python
ARRAY w/ ZEROES: [0 0 0 0]
INPUT ARRAY:
[[ 4 2 14 15]
[ 6 15 2 1]
[13 6 13 3]
[ 5 1 13 9]]
AXIS 1: [3 1 0 2]
AXIS 0: [2 1 0 0]
```
**Explanation**
We created an array filled with zeroes named `out_array`, and we defined the ***shape*** and ***dtype*** same as the input array and then used the `numpy.argmax()` function to get the indices of the max elements along the axis 1 and 0 and stored them in the `out_array` that we defined earlier.
The `numpy.zeros()` has by default ***dtype*** `float` that's why we defined the ***dtype*** in the above code because our input array has the `dtype=int`.
**If we didn't specify the dtype in the above code, it would throw an error**.
```python
# Importing Numpy
import numpy as np
# Creating array filled with zeroes without specifying dtype
out_array = np.zeros((4,))
print("ARRAY w/ ZEROES:", out_array)
# Input array
arr = np.random.randint(16, size=(4, 4))
print("INPUT ARRAY:\n", arr)
print("\nAXIS 1:", np.argmax(arr, axis=1, out=out_array))
```
**Output**
```python
ARRAY w/ ZEROES: [0. 0. 0. 0.]
INPUT ARRAY:
[[14 9 3 4]
[ 9 2 4 8]
[ 5 1 9 1]
[ 6 0 10 7]]
TypeError: Cannot cast array data from dtype('float64') to dtype('int64') according to the rule 'safe'
```
## Conclusion
That was the insight of the argmax() function in NumPy. Let's review what we've learned:
- `numpy.argmax()` function returns the index of the highest value in an array. If the maximum value occurs more than once in an array(multidimensional or flattened array), then the ***argmax()*** function will return the index of the highest value which occurred first.
- We can specify the axis parameter when working with a multidimensional array to get the result along a particular axis. If we specify **axis=0**, then we'll get the index of the highest values vertically in the multidimensional array, and for **axis=1**, we'll get the result horizontally in the multidimensional array.
- We can store the output in another array specified in the **out** parameter; however, the array should be compatible with the input array.
---
**That's all for now**
**Keep Coding✌✌** | sachingeek |
1,888,673 | Updates from the 102nd TC39 meeting | There were several items on the agenda, this post focuses on feature proposals and their progress... | 0 | 2024-06-14T14:57:17 | https://dev.to/hemanth/updates-from-the-102nd-tc39-meeting-i4i | There were several items on the agenda, this post focuses on feature proposals and their progress from the 101th TC39 meeting [11-13th June 2024].
__Stage 2:__
* [Error.isError](https://github.com/tc39/proposal-is-error): `Error.isError` tests if a value is an `Error` instance, irrespective of its Realm origin.
* [ESM Phase Imports](https://github.com/tc39/proposal-esm-phase-imports): Solves the static worker module analysis problem for JavaScript, through defining suitable phase imports for Source Text Module.
* [Discard Bindings](https://github.com/tc39/proposal-discard-binding): Discard `void` bindings.
* [Iterator Sequencing](https://github.com/tc39/proposal-iterator-sequencing): create iterators by sequencing existing iterators
__Stage 2.7:__
* [Deferred Import Evaluation](https://github.com/tc39/proposal-defer-import-eval): a way to defer evaluate of a module.
* [Joint Iteration](https://github.com/tc39/proposal-joint-iteration):synchronise the advancement of multiple iterators
* [RegExp.escape](https://github.com/tc39/proposal-regex-escaping): proposal seeks to investigate the problem area of escaping a string for use inside a Regular Expression.
__Stage 3:__
* [Promise.try](https://github.com/tc39/proposal-promise-try): an ergonomic, readable, and intuitive way to invoke a function and always get a Promise.
<hr />
<center>
[Hemanth HM](https://h3manth.com)
<center /> | hemanth | |
1,888,672 | Generate a SSL with certbot on digitalocean droplet | Install Certbot for SSL # Install python3 virtual environment apt install... | 0 | 2024-06-14T14:56:11 | https://dev.to/sokngoun/generate-a-ssl-with-certbot-on-digitalocean-droplet-2h5f | ## **Install Certbot for SSL**
```
# Install python3 virtual environment
apt install python3-venv
# Create a virtual environment
sudo python3 -m venv /opt/certbot/
```
```
# Upgrade pip
sudo /opt/certbot/bin/pip install --upgrade pip
# Using pip to install certbot & certbot-nginx
sudo /opt/certbot/bin/pip install certbot certbot-nginx
# Copy the newly install certbot package
sudo ln -s /opt/certbot/bin/certbot /usr/bin/certbot
# Instructs Certbot to use the Nginx plugin to automatically configure SSL/TLS for Nginx web servers.
sudo certbot --nginx
```
Add an auto certificate renew script
```
# Run once every 2 days
echo "0 0 */2 * * root /opt/certbot/bin/python -c 'import random; import time; time.sleep(random.random() * 3600)' && sudo certbot renew -q" | sudo tee -a /etc/crontab > /dev/null
```
| sokngoun | |
1,888,671 | Securely Importing Customer Data to Your Azure SaaS Product | In the realm of data-driven insights and analytics, integrating customer data securely and... | 0 | 2024-06-14T14:52:13 | https://dev.to/vaibhavi_shah/securely-importing-customer-data-to-your-azure-saas-product-444c | In the realm of data-driven insights and analytics, integrating customer data securely and efficiently into your SaaS product hosted on Azure is crucial. Many SaaS providers face the challenge of securely importing data from their customers’ Azure accounts while maintaining data integrity and compliance with regulatory requirements. In this blog post, we'll explore a comprehensive approach to achieve this seamlessly using Azure services.
### Understanding the Challenge
Imagine your SaaS product is leveraging Azure’s robust cloud services to deliver powerful data analytics capabilities. A potential customer wants to use your product but needs to import their Azure account data securely for analysis. The task involves securely connecting to their Azure resources, extracting data, and integrating it into your SaaS solution without compromising security.
### Solution Overview
To address this challenge effectively, we'll utilize Azure’s suite of tools designed for secure data integration and management across different Azure tenants. Here’s a structured approach:
**Establish Secure Connectivity**
- **Azure Data Share:** Use Azure Data Share to securely share data between Azure accounts. Your customer can set up a data share containing the required data, and you can configure your SaaS product’s Azure account to receive updates automatically or on-demand.
- **Azure Data Factory (ADF):** Set up ADF to orchestrate data movement across different Azure subscriptions. ADF supports various data sources and provides robust scheduling and monitoring capabilities, making it ideal for ETL (Extract, Transform, Load) processes.
**Data Access and Permissions Management**
- **Azure Active Directory (Azure AD) B2B:** Manage access to resources across Azure tenants using Azure AD B2B. This allows you to invite the customer’s Azure AD users to securely access your SaaS product.
- **Role-Based Access Control (RBAC):** Implement RBAC to enforce least privilege access policies within both Azure accounts, ensuring only authorized users and services can interact with the data.
**Data Transfer and Integration**
- **Using Azure Data Share:**
- The customer creates a data share in their Azure account.
- Invites your Azure subscription to securely access the data share.
- Your SaaS product’s Azure account receives and integrates the shared data.
- **Using Azure Data Factory (ADF):**
- Create linked services in ADF to connect to the customer’s data sources.
- Develop pipelines to extract, transform (if necessary), and load data into your SaaS product’s data store.
- Schedule and monitor pipeline runs to ensure data transfer accuracy and timeliness.
**Security, Compliance, and Monitoring**
- **Encryption:** Ensure data is encrypted in transit and at rest using Azure’s encryption services to maintain confidentiality and integrity.
- **Compliance:** Adhere to industry-specific regulations (e.g., GDPR, HIPAA) by leveraging Azure’s compliance certifications and tools.
- **Monitoring:** Utilize Azure Monitor and Log Analytics to monitor data transfer activities, set up alerts for anomalies, and maintain audit logs for compliance purposes.
### Conclusion
By adopting a structured approach using Azure Data Share, Azure Data Factory, Azure AD B2B, RBAC, and robust security measures, you can securely import customer data into your Azure-hosted SaaS product. This approach not only ensures data security and compliance but also facilitates seamless integration and enables data-driven insights for your customers.
Implementing these best practices strengthens your data management capabilities and enhances customer trust and satisfaction.
| vaibhavi_shah | |
1,888,491 | 🎨 Melhore Seu Tema Favorito no VSCode em Minutos! | Se você é uma pessoa como eu era, que mudava de tema a todo momento no VSCode 😅, chegando ao ponto de... | 0 | 2024-06-14T14:50:35 | https://dev.to/maiquitome/modifique-qualquer-tema-no-vscode-3fch | vscode, tema, braziliandevs | Se você é uma pessoa como eu era, que mudava de tema a todo momento no VSCode 😅, chegando ao ponto de pensar em criar seu próprio tema, mas desistiu por falta de tempo ou preguiça de colocar tanto esforço nisso, eu tenho uma solução bem mais fácil que vai resolver esse problema!
Você vai conseguir alterar aquele tema que você gosta, mas acha que poderia ser melhor; assim, não precisará trocar de tema por um bom tempo.
[](https://go.hotmart.com/R93865620U)
Para exemplificar vou modificar o [Aura Theme](https://marketplace.visualstudio.com/items?itemName=DaltonMenezes.aura-theme)
Vou escolher o `Aura Dark (Soft Text)` que é mais confortável para o olho no meu modelo de monitor.
Vamos modificar primeiramente as cores do código e depois as cores dos painéis e similares.
{% youtube https://youtu.be/SDC97qQQlCU %}
## Modificando as cores do código
Link para a documentação oficial dessa parte: https://code.visualstudio.com/docs/getstarted/themes#_editor-syntax-highlighting
No seu VSCode pressione as teclas "shift+cmd+p" (Mac) ou "shift+ctrl+p" (Windows, Linux), digite `Preferences: Open User Settings (JSON)` e pressione ENTER.
Vamos adicionar o seguinte código:
```javascript
"editor.tokenColorCustomizations": {
// Aqui a mudança afeta todos os temas
// Para exemplificar, vamos modificar a cor dos comentários para vermelho
"comments": "#FF0000"
}
```
O código acima modificou a cor dos comentários para todos os temas instalados no seu VSCode, mas podemos modificar apenas para o tema `Aura Dark (Soft Text)`:
```javascript
"editor.tokenColorCustomizations": {
"[Aura Dark (Soft Text)]": {
// Aqui a mudança afeta apenas o tema `Aura Dark (Soft Text)`
"comments": "#FF0000",
}
}
```
No seu VSCode pressione novamente as teclas "shift+cmd+p" (Mac) ou "shift+ctrl+p" (Windows, Linux), digite `Developer: Inspect Editor Tokens and Scopes` e pressione ENTER.
```javascript
"[Aura Dark (Soft Text)]": {
"textMateRules": [
{
"name": "",
"scope": ["variable.other.object.js.jsx"],
"settings": {
"foreground": "#C17AC8"
}
}
]
}
```
Resultado:
Posso fazer o mesmo com as palavras acima que ainda estão em branco:
```javascript
"editor.tokenColorCustomizations": {
"[Aura Dark (Soft Text)]": {
"textMateRules": [
{
"name": "",
"scope": [
"variable.other.object.js.jsx",
"variable.other.readwrite.alias.js.jsx" // adicione
],
"settings": {
"foreground": "#C17AC8"
}
}
]
}
}
```
Resultado:
## Colocando palavras em itálico
Como eu gosto do itálico da fonte [Victor Mono](https://rubjo.github.io/victor-mono/) eu vou deixar algumas palavras em itálico:
No seu VSCode pressione novamente as teclas "shift+cmd+p" (Mac) ou "shift+ctrl+p" (Windows, Linux), digite `Developer: Inspect Editor Tokens and Scopes` e pressione ENTER.
Nesse exemplo vamos colocar a palavra `import` em itálico:
```javascript
"[Aura Dark (Soft Text)]": {
"textMateRules": [
{
"name": "italic", // Coloque um nome que lembre a alteração
"scope": [
"keyword.control.import.js.jsx"
],
"settings": {
"fontStyle": "italic"
}
}
]
}
```
Também quero a palavra `function` em itálico:
```javascript
"editor.tokenColorCustomizations": {
"[Aura Dark (Soft Text)]": {
"textMateRules": [
{
"name": "italic",
"scope": [
"keyword.control.import.js.jsx",
"storage.type.function.js.jsx" // Adicione
],
"settings": {
"fontStyle": "italic"
}
}
]
}
}
```
[](https://go.hotmart.com/H93763859E)
## Alterando cores dos painéis e similares
Descobrir o nome dos painéis: https://code.visualstudio.com/api/references/theme-color
Vamos agora remover a borda da aba selecionada:
```javascript
"workbench.colorCustomizations": {
"[Aura Dark (Soft Text)][Aura Dark]": {
"tab.inactiveBackground": "#110F18",
"tab.unfocusedActiveBorder": "#110F18",
"tab.activeBorder": "#15141B"
},
},
```
Resultado:
Deixando só a aba selecionada com a mesma cor do background do código (ajuda a identificar melhor qual aba está selecionada):
```javascript
"workbench.colorCustomizations": {
"[Aura Dark (Soft Text)][Aura Dark]": {
"tab.inactiveBackground": "#110F18",
"tab.unfocusedActiveBorder": "#110F18",
"tab.activeBorder": "#15141B",
"tab.activeBackground": "#15141B", // adicione
"editorGroupHeader.tabsBackground": "#110F18" // adicione
}
},
```
Resultado:
## Alterando a cor da ActivityBar
```javascript
"workbench.colorCustomizations": {
"[Aura Dark (Soft Text)][Aura Dark]": {
"tab.inactiveBackground": "#110F18",
"tab.activeBorder": "#15141B",
"tab.activeBackground": "#15141B",
"editorGroupHeader.tabsBackground": "#110F18",
"activityBar.background": "#110F18" // adicione
}
},
```
Resultado:
## Conclusão
Com isso você pode alterar qualquer cor no VSCode, às vezes você pode demorar um pouco para descobrir o nome de certo painel, pois a documentação não é tão clara assim.
Espero ter ajudado, até a próxima 😀👋
[](https://go.hotmart.com/H93763859E)
| maiquitome |
1,888,670 | "Explurger.app: app for travelers make your journey effective" | App for travelers is platform to make your travel journey effective. Using this app create your own... | 0 | 2024-06-14T14:46:58 | https://dev.to/appfortravelers/explurgerapp-app-for-travelers-make-your-journey-effective-1nbi | [App for travelers](https://www.explurger.com/
) is platform to make your travel journey effective. Using this app create your own bucket list, start your journey and make your journey a memorable . Install this app right now. | appfortravelers | |
1,888,657 | OverflowBox and videos in Flutter | Recently I was working on something with Flutter when I encountered with a small problem: how can I... | 0 | 2024-06-14T14:45:51 | https://dev.to/josuestuff/overflowbox-and-videos-in-flutter-1kk8 | flutter, ui, beginners, learning | Recently I was working on something with Flutter when I encountered with a small problem: how can I make a video to fill up all the available space inside a Container widget?
Well, today I’m gonna explain how I did it and how the _[“Understanding constraints”](https://docs.flutter.dev/ui/layout/constraints)_ Flutter docs article helped me in that.
## The `OverflowBox` widget
I’m new in the Flutter world, so I usually have to deal with weird/strange/unexpected results while using it because I don’t have too much experience. But recently I found an article (mentioned earlier) about how constraints works in Flutter, written by the official Flutter development team. That article helped me a lot and was like a revelation, because it says a lot of important stuff to take in consideration while working with Flutter and since I didn’t learned Flutter by reading the documentation, it was really useful for me.
It was in that article where I found the `OverflowBox` widget, which as it’s name suggests, is a widget that allows it’s inner child to overflow without getting the typical “overflow error” in Flutter. In the moment, I didn’t pay too much attetion to it because it didn’t sound too interesting to me and wasn’t able to imagine a situation where I would need to use it. Except that… It didn’t take too much time for me to found a use case.
## Videos and the `AspectRatio` widget
As I said at the start, I was making something in Flutter (a fixed size widget where to put a widget for playing videos) and everytthing was going good until I realized that the rounded corners I made for the widget weren’t working. I spent a while trying to figure out what the heck was going on, because not only the rounded corners weren’t working , but also the video had a different size. After a couple of long minutes, I started to suspect about what was going on: I saw the AspectRatio widget… And decided to put a background color to the Container where I was making all of that and… I saw the problem.
Look, when we put something into an `AspectRatio` widget, it will do pretty much what the name suggests: ensure the child widget keeps the given aspect ratio, so if we put that widget inside of another widget that has a different aspect ratio, it will do something like this:
<figcaption>The AspectRatio widget with the video is inside of a 200x200 Container, the yellow background helps to notice what’s going on.</figcaption>
As we can see, the widget does the job very well and the result is the expected… Which is kinda obvious by just looking at the name of the widget, but for me that wasn’t the case. And the code for that looks like this:
```dart
return Center(
child: Container(
width: 200,
height: 200,
decoration: const BoxDecoration(color: Colors.amber,),
child: AspectRatio(
aspectRatio: _controller.value.aspectRatio,
child: VideoPlayer(_controller),
),
),
);
```
Now, using the `AspectRatio` widget with videos makes a lot of sense, but… I didn’t want this result… I wanted to fill the entire space with the video, no matter if that means that it will be cropped off.
## The solution…?
So, I was thinking… “How can I solve this?”… And then, all of the sudden, I just remembered that I saw a widget in an article that I readed recently… That’s right, the `OverflowBox` widget I just saw a couple of days ago in the _[“Understanding constraints”](https://docs.flutter.dev/ui/layout/constraints)_ article.
There was no time to think twice, I started to code and… It didn’t work. But, it was my fault, because it didn’t set how I wanted the child to overflow inside the `OverflowBox` widget, so I fixed that and there we go, problem… Solved?
<figcaption>As you can see, that video is definitely NOT an 200x200 box as it’s parent…</figcaption>
Well, what’s going on? It still looks to have the same aspect ratio, but bigger… And we can tell the `OverflowBox` is doing the job because we can’t see the yellow background… And the code is correct as we just wrapped the `AspectRatio` with the `OverflowBox`, that should do the job, right?
```dart
return Center(
child: Container(
width: 200,
height: 200,
decoration: const BoxDecoration(color: Colors.amber,),
child: OverflowBox(
maxWidth: double.infinity,
maxHeight: 200,
child: AspectRatio(
aspectRatio: _controller.value.aspectRatio,
child: VideoPlayer(_controller),
),
),
),
);
```
Well… No. This result is expected and should not be surprising if we pay attention to the Flutter API: almost all widgets does only 1 thing and almost all of them don’t crop other widgets unless we specifically tell them to do it.
## Let’s fix this already!
Alright, now it’s more clear what we need to do, so let’s “fix” the code above by setting the `clipBehavior` property:
```dart
return Center(
child: Container(
width: 200,
height: 200,
clipBehavior: Clip.antiAlias,
decoration: const BoxDecoration(color: Colors.amber,),
child: OverflowBox(
maxWidth: double.infinity,
maxHeight: 200,
child: AspectRatio(
aspectRatio: _controller.value.aspectRatio,
child: VideoPlayer(_controller),
),
),
),
);
```
And now, finally, there we go, problem solved:
<figcaption>As you can see, that video is definitely NOT in a 200x200 aspect ratio as it’s parent…</figcaption>
Now, this can also be done with `ClipRect`, but `Container `let’s us set the width, height, background color and we can even do the same thing of clipping the content… But also making nice rounded corners by just adding a single line of code!
<figcaption>So elegant!</figcaption>
And that’s just…
```dart
return Center(
child: Container(
width: 200,
height: 200,
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: Colors.amber,
borderRadius: BorderRadius.circular(20),),
child: OverflowBox(
maxWidth: double.infinity,
maxHeight: 200,
child: AspectRatio(
aspectRatio: _controller.value.aspectRatio,
child: VideoPlayer(_controller),
),
),
),
);
```
## “Nice, I’m gonna use it with images!”
Now, hold on right there… Sure, you can do that I guess, however, you may not need it. Why? Well, that’s pretty simple: the Image widget already has mechanisms to achieve either the same, similar or better results. So… There’s no need to do that, you can just try playing around with Image and other widgets.
## Conclusion
There’s not so much to say, I love when I learn something new like that because is something that came from my mind: not asking, not googling, just straightforward knowledge that I already have but only pops out in the best moment where I need it.
I hope you enjoyed this pretty simple article, I just wanted to share a small experience in my path learning Flutter. This was originally posted on my personal [Telegram channel](https://t.me/JosueStuff) in a more casual way, so if you want to read it, [here it is](https://t.me/JosueStuff/1118) where it started.
Also, if you want the full code, you can get it [here](https://gist.github.com/Miqueas/c1c268e7f2da5d94fc3b81914ce2cb4b).
Have a nice day :) | josuestuff |
1,888,669 | Content modeling in a headless CMS: Structuring BCMS by content types | Content modeling refers to the process of defining the structure of content. Each type is described... | 0 | 2024-06-14T14:45:09 | https://dev.to/momciloo/content-modeling-in-a-headless-cms-structuring-bcms-by-content-types-m92 | [Content modeling](https://thebcms.com/blog/content-modeling-basics) refers to the process of defining the structure of content. Each type is described by its attributes, and broken down into individual components. Headless architecture is how you manage that content.
So, **content modeling in a headless CMS** intersects with how content types are defined and managed.
Unlike traditional CMS, headless separates the front-end presentation layer and the back-end content management layer; content is stored and managed separately from how it is presented to users. This means content can be easily reused and repurposed which leads to higher flexibility.
To make the most of this flexibility, content types must be independent of presentation layers. A content model can help in this situation. It is possible to create flexible, reusable content across multiple channels by defining content types using attributes that describe content instead of how it is presented.
In this article, you will learn how to configure headless CMS to specific needs.
## Content modeling in a headless CMS: The elements of a content model
There are slight differences between CMSs when it comes to content models and every CMS may refer to individual elements differently. However, the basic structure is always the same. A content model consists of three levels:
### **Level 1: Presentation layer**
The presentation layer is what the user sees later or how the content is presented.
### **Level 2: Content types**
Content types are specific types of content represented in the output layers. Common content types are, for example:
- Blog Post
- Product
- Image Gallery
A CMS usually comes with a set of predefined default content types but also, they can be defined completely freely. Important to know that the content types themselves do not yet contain any content; this is maintained in the fields.
### **Level 3: Fields**
There are two types of fields: Content and related fields.
Content creators use content fields to enter content into CMs. Often used fields are:
- Pure text
- Rich text
- HTML
- Image
- Video
Related fields do not contain any content themselves but display other content types and other content fields.
Ok, now that you understand the content structure, it is time to get familiar with BCMS's structure.
### Content modeling in a headless CMS: The BCMS basics
Content modeling is the process of designing data structures for your content. BCMS makes this easy by providing useful data structures that you can configure as needed.
There are five main structures in BCMS's content models: templates, entries, widgets, groups, and properties.
### BCMS templates
[Templates](https://docs.thebcms.com/inside-bcms/templates) in BCMS are a pre-defined content structure ( a section of the webpage). Based on that structure, you can create entries.
You can also give each template a description to describe internal processes, share resources, and explain what that template is being used for.
### BCMS entries
Each [entry in BCMS](https://docs.thebcms.com/inside-bcms/entries) represents one template record. The structure of the input depends on what properties its template has. Properties defined in the template will appear in the meta section of each entry. Besides the predefined meta, each entry has an area called the **content area**. You can add rich text and widgets there.
### BCMS widgets
[Widgets in BCMS](https://docs.thebcms.com/inside-bcms/widgets) are reusable building blocks that are used inside of the entry's content area.
Here’s how to use them in BCMS:
As you can see, widgets are building blocks that help you add various types of content which gives a high level of flexibility and customization in structured content.
Learn more about widgets: [BCMS Widgets -everything you need to know](https://thebcms.com/blog/bcms-widgets-reusable-structured-content-tutorial)
### BCMS groups
Groups in BCMS are reusable building blocks that are made of multiple properties. Groups can be included in any template, widget, or even other groups. This way you can make content types and use them in any template you need because groups behave as independent components with defined instructions that enable independent use of the feature group.
For example, you need a call-to-action button for your blog. This is what it looks like:
Awesome thing, this CTA group you can use on any other page not only blog posts.
### Properties
Properties (or *inputs*) are the smallest piece of the BCMS ecosystem
(property/group/widget/template). Using different kinds of properties, you can create custom data structures for BCMS entries.
Properties are the foundation of BCMS functionality. Here's a list of available properties in BCMS:
- String
- Rich text
- Number
- Date
- Boolean
- Enumeration
- Media
- Group pointer
- Entry pointer
To learn more about BCMS properties check out the [documentation site.](https://docs.thebcms.com/inside-bcms/properties)
## Building content model: Blog example
Ok, now it’s time to get practical. In this part, I will show you how to structure your content by using content modeling in a headless CMS. I’ll use a blog post as an example. (This process you can use for any content model).
### Step 1: Create a template
To create a template, click on Add new template. In the next step, fill in the title, for example, Blog.
The next thing to do is to add properties to the Blog template. By adding properties you are actually making a custom data structure for a blog post. For BCMS blogs that you like to read ( I hope so 🥰), I have 9 properties.
- Title
- Slug- This property enables you to make SEO-friendly URL structure
- Created at
- Updated at
- Preview title
- Category - Tells to which cluster the blog article belongs
- Preview description- This property enables you to make SEO-friendly meta descriptions
- Image- Thumbnails for blog article
- Authors
### Step 2: Use Blog entry to create content
Enter the entry (😉) and fill in all the fields in the meta section. Content area is used for text, video, images, case studies, CTA, and so on.
### Step 3: Content model is ready to go live
The blog post is ready, the only thing left is to choose when to publish it. If not you can choose draft status and go write a new blog.
## The right CMS for content modeling
That’s all folks. As you can see, headless CMS makes content modeling straightforward.
To work effectively with content models, your content management must meet two requirements in particular:
- **Headless**: Your CMS must function according to the headless principle; only then can you enter structured and unformatted content and play it out to multiple frontends via a content API.
- **Individual content types**: Let your CMS define and configure your content types. This gives you the flexibility to meet the requirements of your projects with your CMS. | momciloo | |
1,888,668 | Therapeutic Triumphs: Advances in Internal Medicine Treatments with Dr. Jaspaul S. Bhangoo | In the realm of healthcare, the field of internal medicine plays a pivotal role in diagnosing,... | 0 | 2024-06-14T14:43:30 | https://dev.to/drjaspaulsbhangoo01/therapeutic-triumphs-advances-in-internal-medicine-treatments-with-dr-jaspaul-s-bhangoo-1cbh | In the realm of healthcare, the field of internal medicine plays a pivotal role in diagnosing, treating, and managing a wide range of conditions that affect the internal organs and systems of the body. With advancements in medical research and technology, the landscape of internal medicine treatments has evolved significantly, leading to therapeutic triumphs that have revolutionized patient care. In this blog, we will explore some of the recent advances in internal medicine treatments, particularly in the context of infectious diseases, highlighting the innovative approaches and breakthroughs that are improving outcomes for patients worldwide.
Precision Medicine: Tailored Treatments for Individual Patients
One of the most significant advancements in internal medicine is the shift towards precision medicine, which involves customizing medical treatment plans to the unique characteristics of each patient. This approach recognizes that patients may respond differently to treatments based on their genetic makeup, lifestyle factors, and environmental influences. In the context of infectious diseases, precision medicine allows healthcare providers to identify the most effective antimicrobial therapies for individual patients, minimizing the risk of treatment failure and antimicrobial resistance.
Moreover, precision medicine enables early detection of infectious diseases through advanced diagnostic techniques, such as genomic sequencing and molecular testing. By analyzing the genetic material of pathogens, internal medicine doctors like Dr. Jaspaul S. Bhangoo accurately diagnose infections and tailor treatment strategies to target specific pathogens, leading to faster recovery times and improved clinical outcomes for patients.
## Immunotherapy: Harnessing the Power of the Immune System
Another groundbreaking development in internal medicine is the rise of immunotherapy as a treatment modality for infectious diseases as highlighted by physicians such as Dr. Jaspaul S. Bhangoo. Immunotherapy involves using medications or biological agents to stimulate the body's immune system to recognize and attack pathogens more effectively. This approach has shown promising results in the treatment of various infectious diseases, including viral infections like hepatitis C and HIV, as well as bacterial infections like tuberculosis.
Immunotherapy can enhance the body's natural immune response to infections, reducing the reliance on antimicrobial medications and minimizing the risk of drug resistance. Additionally, immunotherapy holds potential for treating antibiotic-resistant infections by targeting mechanisms of bacterial virulence and enhancing host defense mechanisms. As researchers continue to unravel the complexities of the immune system and develop novel immunotherapeutic agents, the future of infectious disease treatment looks increasingly promising.
## Targeted Antimicrobial Therapies: Combating Resistance
In the battle against infectious diseases, antimicrobial resistance has emerged as a significant challenge, threatening the effectiveness of traditional antibiotic treatments. However, recent advancements in internal medicine have focused on developing targeted antimicrobial therapies that can overcome resistance mechanisms employed by pathogens. These therapies utilize innovative drug delivery methods, such as nanotechnology and pharmacokinetic optimization, to enhance the efficacy of antimicrobial agents while minimizing adverse effects.
Moreover, the advent of precision diagnostics, such as rapid molecular testing and next-generation sequencing, allows healthcare providers to identify specific resistance mechanisms in pathogens and tailor treatment regimens accordingly. By targeting resistant strains with precision as noted by internists including Dr. Jaspaul S. Bhangoo, targeted antimicrobial therapies offer new hope in the fight against multidrug-resistant infections, ensuring that patients receive the most effective treatment options available.
## Immunomodulatory Agents: Modulating the Immune Response
In addition to immunotherapy, internal medicine has witnessed significant progress in the development of immunomodulatory agents that can modulate the immune response to infectious diseases. These agents work by either enhancing the body's immune defenses or suppressing inflammatory responses that contribute to tissue damage and disease progression. By fine-tuning the immune response as conveyed by internal medicine doctors like Dr. Jaspaul S. Bhangoo, immunomodulatory agents can mitigate the severity of infectious diseases and improve patient outcomes.
One example of immunomodulatory therapy is the use of monoclonal antibodies to target specific components of the immune system involved in the pathogenesis of infectious diseases. These antibodies can neutralize pathogens, block inflammatory cytokines, or enhance immune cell function, depending on the therapeutic target. Additionally, small-molecule immunomodulators, such as cytokine inhibitors and Toll-like receptor agonists, offer alternative strategies for modulating immune responses and controlling infectious diseases.
## Integrative Approaches: Holistic Patient Care
As the field of internal medicine continues to evolve, there is growing recognition of the importance of integrative approaches that address the holistic needs of patients with infectious diseases. Integrative medicine combines conventional medical treatments with evidence-based complementary therapies, such as nutrition, stress management, and mind-body practices, to optimize patient outcomes and enhance overall well-being.
By integrating complementary therapies into conventional treatment plans, physicians such as Dr. Jaspaul S. Bhangoo support the body's natural healing processes, alleviate symptoms, and improve quality of life for patients with infectious diseases. Additionally, integrative approaches empower patients to take an active role in their healthcare journey, promoting self-care and resilience in the face of illness. As the demand for personalized, patient-centered care continues to rise, integrative medicine is poised to play a crucial role in the future of infectious disease management.
The field of internal medicine is experiencing a paradigm shift driven by innovative treatments and approaches to infectious disease management. From precision medicine and immunotherapy to targeted antimicrobial therapies and integrative medicine, these advancements are reshaping the landscape of patient care and offering new hope in the fight against infectious diseases. By leveraging cutting-edge technologies, harnessing the power of the immune system, and embracing holistic patient-centered care, healthcare providers are transforming the way we approach infectious disease treatment and paving the way for a healthier future.
| drjaspaulsbhangoo01 | |
1,888,667 | The Puzzle of Pathogens: Understanding Microbes in Internal Medicine with Dr. Jaspaul S. Bhangoo | In the realm of internal medicine, the intricate interplay between pathogens and the human body... | 0 | 2024-06-14T14:42:12 | https://dev.to/drjaspaulsbhangoo01/the-puzzle-of-pathogens-understanding-microbes-in-internal-medicine-with-dr-jaspaul-s-bhangoo-4j09 | In the realm of internal medicine, the intricate interplay between pathogens and the human body presents a complex puzzle for healthcare professionals to decipher. Infectious diseases, caused by a diverse array of microbes, challenge clinicians to diagnose and treat ailments ranging from common colds to life-threatening infections. In this blog, we will delve into the fascinating world of microbes in internal medicine, exploring their role in health and disease and the strategies used to combat them.
## Microbial Diversity in Human Health
Microbes, including bacteria, viruses, fungi, and parasites, inhabit various niches within the human body, influencing physiological processes and contributing to overall health. Beneficial microbes play essential roles in digestion, immunity, and the synthesis of vitamins, while pathogenic microbes can cause illness and disease. Understanding the intricate balance between beneficial and pathogenic microbes is crucial for maintaining optimal health and preventing infectious diseases.
Physicians like Dr. Jaspaul S. Bhangoo convey that advancements in microbiology and genomic sequencing have revealed the immense diversity of microbes present in the human body and their complex interactions with host cells. Research continues to uncover the role of the human microbiome in health and disease, shedding light on potential therapeutic interventions and personalized approaches to patient care.
## Diagnosis and Management of Infectious Diseases
The diagnosis and management of infectious diseases require a multifaceted approach that integrates clinical evaluation, laboratory testing, and antimicrobial therapy. Clinicians must carefully evaluate patient symptoms, medical history, and risk factors to determine the likely etiology of an infection and guide appropriate treatment.
Moreover, laboratory testing, including blood cultures, serological assays, and molecular diagnostics, plays a critical role in identifying the causative agent of an infectious disease and guiding treatment decisions. Rapid diagnostic tests enable internists such as Dr. Jaspaul S. Bhangoo to quickly identify pathogens and select the most effective antimicrobial therapy, reducing the risk of treatment failure and antimicrobial resistance.
## Emerging Infectious Diseases and Global Health
In recent years, the emergence of new infectious diseases and the reemergence of old threats have posed significant challenges to global health security. Factors such as population growth, urbanization, travel, and climate change contribute to the spread of infectious diseases and the emergence of novel pathogens.
Moreover, the interconnected nature of the modern world facilitates the rapid spread of infectious agents across borders, underscoring the need for coordinated international efforts to prevent, detect, and respond to emerging infectious diseases. Collaborative initiatives between governments, public health agencies, and research institutions are essential for monitoring global health trends, developing vaccines and therapeutics, and implementing effective infection control measures as highlighted by internal medicine doctors including Dr. Jaspaul S. Bhangoo.
## Antimicrobial Stewardship and Resistance
The misuse and overuse of antimicrobial agents have led to the emergence of antimicrobial resistance, posing a significant threat to public health worldwide. Antimicrobial stewardship programs aim to promote the prudent use of antimicrobial agents, optimize patient outcomes, and minimize the development of antimicrobial resistance.
Furthermore, education and awareness initiatives play a crucial role in combating antimicrobial resistance by educating healthcare providers, patients, and the public about the importance of responsible antimicrobial use. By implementing antimicrobial stewardship practices and promoting antimicrobial awareness, physicians like Dr. Jaspaul S. Bhangoo contribute to preserving the effectiveness of existing antimicrobial agents and combating the spread of antimicrobial-resistant pathogens.
## Preventive Measures and Vaccination
Preventive measures, including vaccination and infection control practices, are essential for reducing the burden of infectious diseases and protecting public health. Vaccination programs have been instrumental in controlling the spread of infectious diseases such as measles, polio, and influenza, preventing illness, disability, and death.
Moreover, infection control measures, such as hand hygiene, environmental cleaning, and personal protective equipment, play a critical role in preventing the transmission of infectious agents in healthcare settings and the community. By implementing comprehensive vaccination strategies and infection control measures, healthcare providers can reduce the incidence of infectious diseases and protect vulnerable populations from preventable illnesses.
## Future Directions in Microbial Research and Treatment
As we progress into the future, microbial research and treatment modalities continue to evolve, offering promising avenues for improved patient care and disease management. Advances in genomics, immunology, and antimicrobial therapies hold the potential to revolutionize our understanding of pathogens and their interactions with the human body.
Researchers are exploring novel diagnostic techniques, such as point-of-care testing and next-generation sequencing, to enhance the speed and accuracy of infectious disease diagnosis. By harnessing the power of molecular biology and bioinformatics, internists such as Dr. Jaspaul S. Bhangoo identify pathogens more rapidly and tailor treatment strategies to individual patients, leading to more precise and effective care.
Furthermore, the development of new antimicrobial agents and therapeutic approaches, including phage therapy, immunomodulators, and monoclonal antibodies, offers hope for combating antimicrobial resistance and treating stubborn infections. By exploring alternative treatment modalities and leveraging cutting-edge technologies, clinicians can stay one step ahead of microbial pathogens and improve outcomes for patients with infectious diseases.
The puzzle of pathogens in internal medicine presents both challenges and opportunities for healthcare professionals. By understanding the intricate relationship between microbes and the human body, employing advanced diagnostic and treatment strategies, addressing emerging global health threats, promoting antimicrobial stewardship, implementing preventive measures, and embracing future directions in microbial research and treatment, clinicians can navigate the complexities of infectious diseases and improve patient care. With continued dedication to scientific inquiry, collaboration, and innovation, we can unravel the mysteries of microbial pathogens and pave the way for a healthier future.
| drjaspaulsbhangoo01 | |
1,885,866 | Navigating Success: Setting up Vue Router in your Project. | Introduction In the ever-growing tech space of today, a seamless navigation experience can either... | 0 | 2024-06-14T14:42:05 | https://dev.to/chidinma_nwosu/navigating-success-setting-up-vue-router-in-your-project-4el0 | javascript, beginners, learning, vue | **Introduction**
In the ever-growing tech space of today, a seamless navigation experience can either make or break your web application. That is why our journey begins with understanding Vue and the Vue router.
**What is Vue ?**
[Vue](vuejs.org) also pronounced as 'view', was created by [Evan You](https://evanyou.me/). Vue is an open-source, Front-end, Javascript framework for building user interfaces and Single Page Applications(SPA). It builds an application on top of HTML, CSS and Javascript.
**What is a Vue Router ?**
A vue router is the official router for vue.js. It is a guide that transforms a Single Page Application(SPA) into a dynamic multi-page application. It integrates with vue to make building a Single Page Applications(SPA) and navigating through it a walk in the park.
This story follows Chidinma, a passionate front-end developer, as she embarks on a mission to set up a vue router in her latest project.
**The Challenge**
Staring at the project requirements on my screen; a modern day application with multiple pages and dynamic navigation. The challenge was clear: to set up a single page application with a robust routing system to multiple pages. Without it, users would be lost , unable to explore the different sections of my application seamlessly.
**Discovering the solution**
In my quest for a solution, I came across the vue router, an official library for vue.js, designed to handle seamless navigation, as explained under the definition of a vue router. The promise of a clean, declarative routing, and the ability to handle nested routes was intriguing! I just knew that this was the key to unlocking the multi-page potential of my project. Now, let us delve into the key features of vue-router i discovered along the way.
**What are the key features of the vue router?**
There are some key features that vue-router has that makes it unique. These features are:
1. **Nested route mapping** : vue-router allows for nested routes, which means you can have routes within routes.
2. **Dynamic routing**: it allows you change your applications route on the fly.
3. **Component-based router configuration** : it allows you structure your routes in a component-based manner. This makes routing configuration easier to manage as the application grows.
4. **Customizable scroll behavior** : it lets you customize the scroll behavior of your application when navigating between routes.
5. **Navigation control** :it gives you control over navigation, allowing you to programmatically navigate to different routes in response to user actions.
6. **Route params, Query and Wildcards** : it supports route parameters, query parameters, and wildcards, giving you control over how your application responds to different URLs.
Now that we have an idea of what vue is, who founded it, what the vue-router is and some key features of the vue-router, we can now delve into setting up a vue-router in our project.
**Step by step implementation**
The steps involved in setting up a vue-router in a project is:
1. **Folder/file structure**: properly understanding the folder and file structure of our project is important . First, we have a diagrammatic representation of our file structure and secondly, we have an explanation of the structure.
```
my-vue-project/
├── node_modules/
├── public/
│ ├── favicon.ico
│ └── index.html
├── src/
│ ├── assets/
│ │ └── logo.png
│ ├── components/
│ │ └── HelloWorld.vue
│ ├── router/
│ │ └── index.js
│ ├── views/
│ │ ├── HomeView.vue
│ │ ├── AboutView.vue
│ │ └── NotFoundView.vue
│ ├── App.vue
│ ├── main.js
│ └── router
│ └── index.js
├── .gitignore
├── babel.config.js
├── jsconfig.json
├── package.json
├── README.md
└── vue.config.js
```
**Explanation of the folder/file structure**
A. **Root Directory** (my-vue-project/): it contain several folders(the forward-slash(/) indicates that it is a folder) and files, as explained below.
- **node_modules/**: Contains all the npm packages installed for the project.
- **public/**: Contains static assets and the main HTML file (index.html).
- **src/**: The source directory where all the Vue components, assets, and configuration files reside.
- **assets/**: For static assets such as images, fonts, etc.
- **components/**: Contains reusable Vue components.
- **router/**: Contains the router configuration file (index.js).
- **views/**: Contains Vue components that are used as views/pages in the application.
- **App.vue**: The root Vue component.
- **main.js**: The entry point of the application where Vue instance is created and mounted.
- **store/**: (If using Vuex) Contains the Vuex store configuration for state management.
- **.gitignore**: Specifies which files and directories should be ignored by Git.
- **babel.config.js**: Babel configuration file.
- **jsconfig.json**: JavaScript configuration file for the project.
- **package.json**: Lists the project's dependencies and scripts.
- **README.md**: A markdown file providing information about the project.
- **vue.config.js**: Optional configuration file for Vue CLI.
2.After creating a vue project(my-vue-project),understanding its folder and file structure. We then install the vue-router using npm, and set up the vue-router in our existing project:
```
npm install vue-router@latest
```
3.In our project, we will have a folder called **View**, it may contain some files(HomeView.vue and AboutView.vue). Additional view files are welcome, as seen in the code below:
```
<script setup>
// In your folder called View, setup vue components that will be used as view, three files in it(HomeView.vue, AboutView.vue, and NotFoundView.vue)
</script>
<!--HomeView.vue-->
<template>
<div>
<h1>Home</h1>
<p>This is the home page</p>
</div>
</template>
<!--AboutView.vue-->
<template>
<div>
<h1>About</h1>
<p>This is the about page</p>
</div>
</template>
<!--NotFoundView.vue-->
<template>
<div>
<h1>Not found</h1>
<p>This is the 404 page</p>
</div>
</template>
```
4.In our **App.vue**, under your **src folder**, import **Router Link and Router View**, use them to define your navigation routes.
```
<script setup>
import {routerLink,routerView} from 'vue-router'
</script>
<!--create a navigation bar with links to the home, about, and not found pages-->
<template>
<nav>
<RouterLink to="/">Home</routerLink>
<RouterLink to="/about">About</routerLink>
<RouterLink to="/not-found">Not found</routerLink>
</nav>
<!-- this is the view where each components will be rendered -->
<RouterView/>
</template>
```
5.In our **routes folder**, under our **index.js file**, create your router instance by importing createWebHistory and createRouter, putting your routes in an array, making sure each route is an object that contains a path, name, component, and maybe some meta details.
```
import {createRouter, createWebHistory } from 'vue-router'
import HomeView from './HomeView.vue'
//create a route instance using VueRouter
const router = createRouter({
history: createWebHistory(import.meta.env.BASE_URL),
routes: [
{
path: '/',
name: 'Home',
component: HomeView,
meta: {
title: 'Home',
description: 'This is the home page'
}
},
{
path: '/about',
name: 'About',
component:()=>import('./AboutView.vue'),//allows for lazy loading
meta: { //meta is used for search engine optimization
title: 'About',
description: 'This is the about page'
}
},
{
path: '/:catchAll(.*)',
name: 'not-found',
component:()=>import('./NotFoundView.vue'),
meta: {
title: 'Not found',
description: 'This is the 404 page'
}
}
]
})
export default router;
```
You will notice that the **AboutView** and **NotFoundView** sections of the route file use a different value for the component option, which differs from the **HomeView**. **Why is that the case?**
This is because we are lazy loading these pages. Lazy loading of routes in Vue Router is a technique used to increase the performance of a Vue.js application by splitting the application into smaller chunks that are loaded on demand. Instead of loading all routes upfront, lazy loading loads the JavaScript for a route only when that route is visited. This can significantly reduce the initial load time of the application and improve the user experience, especially for large applications with many routes.
**How does lazy loading works?**
Lazy loading in Vue Router uses dynamic import statements to load route components asynchronously, as seen in the code example. When a user navigates to a route, the corresponding component is fetched from the server and then rendered.
**What is meta, why is it used in routes?**
If you look closely at our code example above, you will notice that all our routes have a meta property, _Why?_
In vue router, the meta property is used to attach metadata to routes, this metadata can be used for various purposes: search engine optimization, authentication, authorization, page titles etc. It simply aids and eases navigation.
6.Finally, in the **src folder**, under the **main.js file**, you need to inject your router into your vue instance for it to work.
```
const app = createApp(App)
app.use(router)
app.mount('#app')
```
Now the magic of the vue router comes to life, after refreshing the application, with a click we can seamlessly navigate through the HomeView, AboutView and NotFoundView pages of our application, by simply clicking on links or entering URLs such as /, /about, and /not-found(*) in your browser, you can access the respective pages without needing to refresh the application. Thereby enhancing user experience.
**Conclusion**
In conclusion, keep in mind that this is just a basic setup, it will vary from project to project. Also, vue-router has many other features like nested routes, named routes, and programmatic navigation that is not shown here but you can try on your own, just for fun. For more information, read up on the [vue router](router.vuejs.org). You need to realize that the journey of setting up a vue-router involves creating a seamless user experience that guides users through your application effortlessly, always bear this in mind.
Using the vue router, I was able to transform a static project into a dynamic, multi-page application. This story shows that with the right tool, proper understanding of vue, vue router, its key features, folder and file structure of your project, among other things, we can create a seamless navigation experience for a user, through our application. _Isn't that wonderful? Would you like to try it out?_
| chidinma_nwosu |
1,888,666 | $All and $ElemMatch in MongoDB | Using $All and $ElemMatch in MongoDB $all The $all operator is used with... | 0 | 2024-06-14T14:41:52 | https://dev.to/kawsarkabir/all-and-elemmatch-in-mongodb-4od6 | webdev, database, mongodb, kawsarkabir | ## Using $All and $ElemMatch in MongoDB
### $all
The `$all` operator is used with arrays. Let's say you have an array field called `interests`. If you want to find documents where the `interests` include "Travelling", you can easily do that:
```javascript
// array field
"interests" : [ "Travelling", "Gaming", "Reading" ]
db.students.find({ interests: "Travelling" }) // 'students' is the name of the collection.
```
However, if you are asked to find documents where the `interests` include both "Travelling" and "Reading", how would you do that?
```javascript
db.students.find({ interests: ["Travelling", "Reading"] });
```
If you run this query, it will throw an error because this query looks for an exact match of the array `["Travelling", "Reading"]`. To find documents that include both "Travelling" and "Reading" regardless of their positions in the array, you need the `$all` operator:
```javascript
db.students.find({ interests: { $all: ["Travelling", "Reading"] } });
```
- With `$all`, the positions of the elements in the array do not matter. As long as the specified elements are present in the array, the document will be retrieved.
### $elemMatch
The `$elemMatch` operator is used for matching elements in an array of objects.
### Example:
Suppose your `students` collection has documents with a `grades` array field, where each element is an object representing a subject and a score:
```json
{
"name": "Alice",
"grades": [
{ "subject": "Math", "score": 90 },
{ "subject": "English", "score": 85 }
]
},
{
"name": "Bob",
"grades": [
{ "subject": "Math", "score": 75 },
{ "subject": "English", "score": 95 }
]
},
{
"name": "Charlie",
"grades": [
{ "subject": "Math", "score": 90 },
{ "subject": "English", "score": 90 }
]
}
```
If you want to find students who scored more than 80 in Math, you can use the `$elemMatch` operator:
```javascript
db.students.find({
grades: { $elemMatch: { subject: "Math", score: { $gt: 80 } } }
});
```
This query will return the documents for Alice and Charlie, but not for Bob because his Math score is not greater than 80.
### Conclusion:
- **`$all`** is used to match elements in an array.
- **`$elemMatch`** is used to match elements in an array of objects, where each element needs to satisfy multiple conditions. | kawsarkabir |
1,888,660 | Object / pipe function / currying | 0bject Objectlar bu keys va value yani kalitlar va qiymatlarni o'z ichiga olgan ma'lumotlar... | 0 | 2024-06-14T14:32:22 | https://dev.to/bekmuhammaddev/object-pipe-function-currying-29ek | javascript, object, webdev | **0bject**
Objectlar bu keys va value yani kalitlar va qiymatlarni o'z ichiga olgan ma'lumotlar to'plami.Ob'ektlar yordamida siz ko'p turdagi ma'lumotlarni bitta strukturada saqlashingiz mumkin.Ob'ektlar JavaScriptning asosiy tushunchalaridan biri bo'lib, ular ko'pincha dasturda turli ma'lumotlarni guruhlash va ularga murojaat qilish uchun ishlatiladi.
Ob'ekt literal usuli:
```
let car = {
make: "Toyota",
model: "Corolla",
year: 2021,
color:"black"
};
```
Ob'ektga Murojaat Qilish:
ikki xil usul bilan murojat qilish mumkin
1 Nuqta yirdamida:
Ob'ektning qiymatlariga ikki xil usul bilan murojaat qilishingiz mumkin:
```
console.log(car.make);
console.log(car.model);
```
2 Kvadrat qavs orqali:
```
console.log(car["make"]);
console.log(car["model"]);
```
Ob'ektga Yangi Xususiyat Qo'shish
```
car.color = "white";
console.log(car.color);
```
JavaScriptda ob'ektlar juda kuchli va ulardan foydalanish juda keng tarqalgan.Ular yordamida siz murakkab ma'lumot strukturalarini yaratishingiz va ulardan foydalanishingiz mumkin.Ob'ektlarni tushunish va ulardan to'g'ri foydalanish sizning JavaScript dasturlash mahoratingizni sezilarli darajada oshiradi.
**PIPE function**
JavaScriptda "pipe" funksiyasi funksional dasturlash paradigmasida keng qo'llaniladigan tushunchadir. U bir qator funksiyalarni ketma-ket chaqiradi, bunda har bir funksiya oldingi funksiyaning chiqishini keyingi funksiyaga kiritma sifatida oladi. Bu, xuddi bir nechta funksiyalarni birlashgan holda, bir xil quvurni (pipe) hosil qilishiga o'xshaydi.
**PIPE function quydagicha ko'rinishda**
```
// oddiy funksiyalar
const bir = x => x + 1;
const ikki = x => x * 2;
const uch = x => x - 3;
// Pipe yordamida ularni birlashtirish
const hisoblash = pipe(bir, ikki, uch);
const result = hisoblash(5);
console.log(result); // shu ko'rinishda amal bajariladi (5 + 1) * 2 - 3 = 9
```
Dastlab 5 qiymatiga bir funksiyasi qo'llanadi va 6 hosil bo'ladi.
Keyin 6 qiymati ikki funksiyasiga uzatiladi va 12 hosil bo'ladi.
Nihoyat, 12 qiymati uch funksiyasiga uzatiladi va 9 hosil bo'ladi.
pipe fuksiyasi yordamida siz ketma - ket amallarni bajarishingiz mumkin va qiyin ammalarni osongina bajara olasiz.
**Currying Function**
Currying - bu funksiyani argumentlarini qabul qiladigan ketma-ketlikka bo'lish jarayonidir, ya'ni bir nechta argumentlarni bir vaqtning o'zida qabul qilish o'rniga, u har bir argumentni alohida qabul qilib, har bir qadamda yangi funksiya qaytaradi. Bu jarayon natijasida oxirgi natija hosil bo'ladi.
currying funksiya:
```
function hisoblash(a) {
return function(b) {
return function(c) {
return a * b * c;
};
};
}
const result = hisoblash(2)(3)(4); // shu holatda hsoblanadi 2 * 3 * 4 = 24
console.log(result); // natija 24
```
Bu misolda hisoblash funksiyasi uchta argumentni qabul qiluvchi currying funksiyasidir. Har bir argumentni alohida qabul qiladi va oxirgi natijani hisoblab qaytaradi.
Currying bu funksional dasturlashda keng qo'llaniladigan texnika bo'lib, u funksiyalarni qayta foydalanish va qisman qo'llash imkoniyatlarini beradi. Bu texnika JavaScriptda ko'p hollarda funksiyalarni soddalashtirish va ulardan foydali modullar yaratishda ishlatiladi.
| bekmuhammaddev |
1,888,665 | Containment Strategies: Preventing Outbreaks in Internal Medicine Settings with Dr. Jaspaul S. Bhangoo | In the field of internal medicine, healthcare professionals face the constant challenge of preventing... | 0 | 2024-06-14T14:40:37 | https://dev.to/drjaspaulsbhangoo01/containment-strategies-preventing-outbreaks-in-internal-medicine-settings-with-dr-jaspaul-s-bhangoo-ob8 | In the field of internal medicine, healthcare professionals face the constant challenge of preventing and containing infectious diseases within clinical settings. With the potential for outbreaks to occur, especially in settings such as hospitals and clinics where patients with various medical conditions converge, it is imperative to implement robust containment strategies. In this blog, we will explore effective strategies for preventing outbreaks of infectious diseases in internal medicine settings, safeguarding both patients and healthcare workers.
## Implementing Stringent Infection Control Measures
The cornerstone of preventing outbreaks in internal medicine settings is the implementation of stringent infection control measures. This includes adherence to standard precautions such as hand hygiene, proper use of personal protective equipment (PPE), and environmental cleaning and disinfection. Healthcare facilities should provide regular training and education to staff on infection control protocols and ensure compliance through monitoring and audits.
Physicians like Dr. Jaspaul S. Bhangoo convey that it is essential to establish protocols for the management of infectious patients, including isolation precautions and the use of specialized equipment for procedures that may generate aerosols. By prioritizing infection control measures and creating a culture of vigilance, internal medicine settings can minimize the risk of transmission and prevent outbreaks of infectious diseases among patients and healthcare workers.
## Screening and Triaging Patients
Another critical strategy for preventing outbreaks in internal medicine settings is the implementation of robust screening and triage protocols for patients presenting with symptoms of infectious diseases. This involves conducting thorough assessments of patients' medical history, travel history, and symptoms to identify potential infectious risks. Healthcare facilities should establish clear criteria for identifying patients who may require isolation or additional testing for infectious diseases.
Moreover, triage processes should be designed to prioritize patients with suspected infectious diseases and ensure prompt evaluation and appropriate management as emphasized by internists such as Dr. Jaspaul S. Bhangoo. This may involve segregating patients with respiratory symptoms or fever into designated areas, providing them with masks, and expediting laboratory testing and diagnostic procedures. By implementing proactive screening and triage measures, internal medicine settings can identify and isolate infectious cases early, preventing the spread of disease and minimizing the risk of outbreaks.
## Vaccination Programs and Immunization Campaigns
In addition to infection control measures and patient screening, vaccination programs and immunization campaigns play a crucial role in preventing outbreaks of infectious diseases in internal medicine settings. Healthcare facilities should prioritize vaccination efforts for both patients and healthcare workers, ensuring high vaccination coverage rates to achieve herd immunity and reduce the risk of disease transmission.
Furthermore, internal medicine settings can collaborate with public health authorities and community organizations to promote immunization awareness and provide access to vaccines for vulnerable populations. This may involve organizing vaccination clinics, offering outreach services to underserved communities, and addressing vaccine hesitancy through education and advocacy efforts. By investing in comprehensive vaccination programs as championed by internal medicine doctors including Dr. Jaspaul S. Bhangoo, internal medicine settings can effectively prevent outbreaks of vaccine-preventable diseases and protect the health and well-being of patients and staff alike.
## Surveillance and Monitoring Systems
To detect and respond to potential outbreaks of infectious diseases in a timely manner, internal medicine settings should establish robust surveillance and monitoring systems. This involves monitoring trends in infectious disease prevalence and incidence within the facility, as well as conducting routine surveillance for healthcare-associated infections (HAIs) and emerging pathogens.
Internists such as Dr. Jaspaul S. Bhangoo suggest that healthcare facilities can leverage electronic health records (EHRs), laboratory data, and syndromic surveillance systems to track and analyze infectious disease trends in real-time. Additionally, regular communication and collaboration with local and state public health agencies can facilitate the exchange of information and early detection of outbreaks in the community. By implementing proactive surveillance and monitoring systems, internal medicine settings can identify potential threats early and implement targeted interventions to prevent the spread of infectious diseases within the facility.
## Education and Training Initiatives
Education and training initiatives are essential for ensuring that healthcare professionals have the knowledge and skills necessary to prevent and respond to outbreaks of infectious diseases effectively. Internal medicine settings should provide comprehensive training programs on infection control practices, outbreak management protocols, and emergency response procedures to all staff members.
Furthermore, ongoing education and training opportunities should be offered to keep healthcare professionals informed about emerging infectious diseases, updates to vaccination recommendations, and best practices for infection prevention and control. This may include regular workshops, seminars, and online courses on relevant topics, as well as hands-on training exercises and simulations to reinforce learning. By investing in continuous education and training initiatives as championed by physicians like Dr. Jaspaul S. Bhangoo, internal medicine settings can empower healthcare professionals to stay vigilant, adaptable, and prepared to address infectious disease threats effectively.
## Collaboration and Communication
Effective collaboration and communication are essential for preventing outbreaks of infectious diseases in internal medicine settings. Healthcare facilities should foster a culture of collaboration among interdisciplinary teams, including physicians, nurses, infection preventionists, laboratory personnel, and environmental services staff.
Moreover, internal medicine settings should establish clear communication channels and protocols for sharing information, reporting potential outbreaks, and coordinating response efforts. This may involve regular meetings, huddles, or incident command structures to facilitate rapid communication and decision-making during infectious disease events. Additionally, internal medicine settings should maintain open lines of communication with patients, families, and external stakeholders to provide timely updates and address concerns related to infectious disease prevention and control. By fostering a culture of collaboration and communication, internal medicine settings can enhance their ability to detect, contain, and mitigate outbreaks of infectious diseases effectively.
Preventing outbreaks of infectious diseases in internal medicine settings requires a multifaceted approach that encompasses infection control measures, patient screening, vaccination programs, surveillance and monitoring systems, education and training initiatives, and collaboration and communication. By implementing comprehensive strategies and fostering a culture of vigilance and preparedness, internal medicine settings can minimize the risk of infectious disease transmission and safeguard the health and safety of patients and healthcare workers. Let us continue to prioritize proactive measures and work together to prevent outbreaks and protect public health in internal medicine settings.
| drjaspaulsbhangoo01 | |
1,888,664 | Updating Non-Primitive Data Dynamically in Mongoose | Introduction When working with MongoDB and Mongoose, updating documents is straightforward... | 0 | 2024-06-14T14:35:31 | https://dev.to/md_enayeturrahman_2560e3/updating-non-primitive-data-dynamically-in-mongoose-17h2 | javascript, mongodb, node, express | ### Introduction
When working with MongoDB and Mongoose, updating documents is straightforward for primitive fields. However, handling nested or non-primitive fields requires a more nuanced approach to ensure that the data is updated correctly without overwriting existing fields. In this blog post, we'll explore how to dynamically update non-primitive fields using a comprehensive example.
- This is the twelfth blog of my series where I am writing how to write code for an industry-grade project so that you can manage and scale the project.
- The first eleven blogs of the series were about "How to set up eslint and prettier in an express and typescript project", "Folder structure in an industry-standard project", "How to create API in an industry-standard app", "Setting up global error handler using next function provided by express", "How to handle not found route in express app", "Creating a Custom Send Response Utility Function in Express", "How to Set Up Routes in an Express App: A Step-by-Step Guide", "Simplifying Error Handling in Express Controllers: Introducing catchAsync Utility Function", "Understanding Populating Referencing Fields in Mongoose", "Creating a Custom Error Class in an express app" and "Understanding Transactions and Rollbacks in MongoDB". You can check them in the following link.
https://dev.to/md_enayeturrahman_2560e3/how-to-set-up-eslint-and-prettier-1nk6
https://dev.to/md_enayeturrahman_2560e3/folder-structure-in-an-industry-standard-project-271b
https://dev.to/md_enayeturrahman_2560e3/how-to-create-api-in-an-industry-standard-app-44ck
https://dev.to/md_enayeturrahman_2560e3/setting-up-global-error-handler-using-next-function-provided-by-express-96c
https://dev.to/md_enayeturrahman_2560e3/how-to-handle-not-found-route-in-express-app-1d26
https://dev.to/md_enayeturrahman_2560e3/creating-a-custom-send-response-utility-function-in-express-2fg9
https://dev.to/md_enayeturrahman_2560e3/how-to-set-up-routes-in-an-express-app-a-step-by-step-guide-177j
https://dev.to/md_enayeturrahman_2560e3/simplifying-error-handling-in-express-controllers-introducing-catchasync-utility-function-2f3l
https://dev.to/md_enayeturrahman_2560e3/understanding-populating-referencing-fields-in-mongoose-jhg
https://dev.to/md_enayeturrahman_2560e3/creating-a-custom-error-class-in-an-express-app-515a
https://dev.to/md_enayeturrahman_2560e3/understanding-transactions-and-rollbacks-in-mongodb-2on6
### Understanding Primitive Field Updates
Let's start with a simple example of updating primitive fields. Suppose we have a user document:
```javascript
{
name: 'Enayet',
age: 36,
male: true,
}
```
Updating a primitive field, such as age, is straightforward. If we send the new data:
```javascript
{
age: 37
}
```
The document will be updated as follows:
```javascript
{
name: 'Enayet',
age: 37,
male: true,
}
```
Similarly, updating multiple primitive fields, like name and male, is equally simple:
```javascript
{
name: 'Mariyam',
male: false,
}
```
The updated document will be:
```javascript
{
name: 'Mariyam',
age: 36,
male: false,
}
```
### Challenges with Non-Primitive Fields
Updating non-primitive fields, such as nested objects, requires careful handling to avoid overwriting existing data. Consider the following document with a nested name object:
```javascript
{
name: {
firstName: 'Enayet',
lastName: 'Rahman'
},
age: 36,
male: true,
}
```
If we want to add a middleName property and send the data as follows:
```javascript
{
name: {
middleName: 'Nai'
}
}
```
The updated document will be:
```javascript
{
name: {
middleName: 'Nai'
},
age: 36,
male: true,
}
```
This approach overwrites the entire name object, removing firstName and lastName. To add middleName without losing other fields, we need to structure the data differently:
```javascript
name.middleName: 'Nai'
```
The resulting document will be:
```javascript
{
name: {
firstName: 'Enayet',
middleName: 'Nai',
lastName: 'Rahman'
},
age: 36,
male: true,
}
```
Instead of sending data in this format from the frontend, we can send it as an object and handle the update logic on the backend.
### Comprehensive Example: Student Data
Let's use a comprehensive example to illustrate the solution. We have a Student type with various nested types:
- TypeScript Types
```javascript
import { Model, Types } from 'mongoose';
export type TUserName = {
firstName: string;
middleName: string;
lastName: string;
};
export type TGuardian = {
fatherName: string;
fatherOccupation: string;
fatherContactNo: string;
motherName: string;
motherOccupation: string;
motherContactNo: string;
};
export type TLocalGuardian = {
name: string;
occupation: string;
contactNo: string;
address: string;
};
export type TStudent = {
id: string;
user: Types.ObjectId;
password: string;
name: TUserName;
gender: 'male' | 'female' | 'other';
dateOfBirth?: Date;
email: string;
contactNo: string;
emergencyContactNo: string;
bloodGroup?: 'A+' | 'A-' | 'B+' | 'B-' | 'AB+' | 'AB-' | 'O+' | 'O-';
presentAddress: string;
permanentAddress: string;
guardian: TGuardian;
localGuardian: TLocalGuardian;
profileImg?: string;
admissionSemester: Types.ObjectId;
isDeleted: boolean;
academicDepartment: Types.ObjectId;
};
```
- Mongoose Schema and Model
```javascript
import { Schema, model } from 'mongoose';
import { TStudent, TUserName, TGuardian, TLocalGuardian } from './student.interface';
const userNameSchema = new Schema<TUserName>({
firstName: {
type: String,
required: [true, 'First Name is required'],
trim: true,
maxlength: [20, 'Name cannot be more than 20 characters'],
},
middleName: {
type: String,
trim: true,
},
lastName: {
type: String,
trim: true,
required: [true, 'Last Name is required'],
maxlength: [20, 'Name cannot be more than 20 characters'],
},
});
const guardianSchema = new Schema<TGuardian>({
fatherName: {
type: String,
trim: true,
required: [true, 'Father Name is required'],
},
fatherOccupation: {
type: String,
trim: true,
required: [true, 'Father occupation is required'],
},
fatherContactNo: {
type: String,
required: [true, 'Father Contact No is required'],
},
motherName: {
type: String,
required: [true, 'Mother Name is required'],
},
motherOccupation: {
type: String,
required: [true, 'Mother occupation is required'],
},
motherContactNo: {
type: String,
required: [true, 'Mother Contact No is required'],
},
});
const localGuardianSchema = new Schema<TLocalGuardian>({
name: {
type: String,
required: [true, 'Name is required'],
},
occupation: {
type: String,
required: [true, 'Occupation is required'],
},
contactNo: {
type: String,
required: [true, 'Contact number is required'],
},
address: {
type: String,
required: [true, 'Address is required'],
},
});
const studentSchema = new Schema<TStudent>({
id: {
type: String,
required: [true, 'ID is required'],
unique: true,
},
user: {
type: Schema.Types.ObjectId,
required: [true, 'User id is required'],
unique: true,
ref: 'User',
},
name: {
type: userNameSchema,
required: [true, 'Name is required'],
},
gender: {
type: String,
enum: ['male', 'female', 'other'],
required: [true, 'Gender is required'],
},
dateOfBirth: { type: Date },
email: {
type: String,
required: [true, 'Email is required'],
unique: true,
},
contactNo: {
type: String,
required: [true, 'Contact number is required'],
},
emergencyContactNo: {
type: String,
required: [true, 'Emergency contact number is required'],
},
bloodGroup: {
type: String,
enum: ['A+', 'A-', 'B+', 'B-', 'AB+', 'AB-', 'O+', 'O-'],
},
presentAddress: {
type: String,
required: [true, 'Present address is required'],
},
permanentAddress: {
type: String,
required: [true, 'Permanent address is required'],
},
guardian: {
type: guardianSchema,
required: [true, 'Guardian information is required'],
},
localGuardian: {
type: localGuardianSchema,
required: [true, 'Local guardian information is required'],
},
profileImg: { type: String },
admissionSemester: {
type: Schema.Types.ObjectId,
ref: 'AcademicSemester',
},
isDeleted: {
type: Boolean,
default: false,
},
academicDepartment: {
type: Schema.Types.ObjectId,
ref: 'AcademicDepartment',
},
});
export const Student = model<TStudent>('Student', studentSchema);
```
- Zod Validation Schema
Zod is used to validate the incoming data to ensure it meets the required format and constraints.
```javascript
import { z } from 'zod';
const createUserNameValidationSchema = z.object({
firstName: z.string().min(1).max(20).refine(value => /^[A-Z]/.test(value), {
message: 'First Name must start with a capital letter',
}),
middleName: z.string(),
lastName: z.string(),
});
const createGuardianValidationSchema = z.object({
fatherName: z.string(),
fatherOccupation: z.string(),
fatherContactNo: z.string(),
motherName: z.string(),
motherOccupation: z.string(),
motherContactNo: z.string(),
});
const createLocalGuardianValidationSchema = z.object({
name: z.string(),
occupation: z.string(),
contactNo: z.string(),
address: z.string(),
});
export const createStudentValidationSchema = z.object({
body: z.object({
password: z.string().max(20),
student: z.object({
name: createUserNameValidationSchema,
gender: z.enum(['male', 'female', 'other']),
dateOfBirth: z.string().optional(),
email: z.string().email(),
contactNo: z.string(),
emergencyContactNo: z.string(),
bloodGroup: z.enum(['A+', 'A-', 'B+', 'B-', 'AB+', 'AB-', 'O+', 'O-']),
presentAddress: z.string(),
permanentAddress: z.string(),
guardian: createGuardianValidationSchema,
localGuardian: createLocalGuardianValidationSchema,
admissionSemester: z.string(),
profileImg: z.string(),
academicDepartment: z.string(),
}),
}),
});
const updateUserNameValidationSchema = z.object({
firstName: z.string().min(1).max(20).optional(),
middleName: z.string().optional(),
lastName: z.string().optional(),
});
const updateGuardianValidationSchema = z.object({
fatherName: z.string().optional(),
fatherOccupation: z.string().optional(),
fatherContactNo: z.string().optional(),
motherName: z.string().optional(),
motherOccupation: z.string().optional(),
motherContactNo: z.string().optional(),
});
const updateLocalGuardianValidationSchema = z.object({
name: z.string().optional(),
occupation: z.string().optional(),
contactNo: z.string().optional(),
address: z.string().optional(),
});
export const updateStudentValidationSchema = z.object({
body: z.object({
student: z.object({
name: updateUserNameValidationSchema,
gender: z.enum(['male', 'female', 'other']).optional(),
dateOfBirth: z.string().optional(),
email: z.string().email().optional(),
contactNo: z.string().optional(),
emergencyContactNo: z.string().optional(),
bloodGroup: z.enum(['A+', 'A-', 'B+', 'B-', 'AB+', 'AB-', 'O+', 'O-']).optional(),
presentAddress: z.string().optional(),
permanentAddress: z.string().optional(),
guardian: updateGuardianValidationSchema.optional(),
localGuardian: updateLocalGuardianValidationSchema.optional(),
admissionSemester: z.string().optional(),
profileImg: z.string().optional(),
academicDepartment: z.string().optional(),
}),
}),
});
export const studentValidations = {
createStudentValidationSchema,
updateStudentValidationSchema,
};
```
- Service for Updating Student
Here's where the magic happens. The service will handle the logic for dynamically updating non-primitive fields.
```javascript
import httpStatus from 'http-status';
import mongoose from 'mongoose';
import AppError from '../../errors/AppError';
import { TStudent } from './student.interface';
import { Student } from './student.model';
const updateStudentIntoDB = async (id: string, payload: Partial<TStudent>) => {
const { name, guardian, localGuardian, ...remainingStudentData } = payload;
const modifiedUpdatedData: Record<string, unknown> = {
...remainingStudentData,
};
if (name && Object.keys(name).length) {
for (const [key, value] of Object.entries(name)) {
modifiedUpdatedData[`name.${key}`] = value;
}
}
if (guardian && Object.keys(guardian).length) {
for (const [key, value] of Object.entries(guardian)) {
modifiedUpdatedData[`guardian.${key}`] = value;
}
}
if (localGuardian && Object.keys(localGuardian).length) {
for (const [key, value] of Object.entries(localGuardian)) {
modifiedUpdatedData[`localGuardian.${key}`] = value;
}
}
const result = await Student.findOneAndUpdate({ id }, modifiedUpdatedData, {
new: true,
runValidators: true,
});
return result;
};
export const StudentServices = {
updateStudentIntoDB,
};
```
- **Explanation**
- **Importing Required Modules:** Import necessary files and packages such as http-status, mongoose, AppError, and the Student model.
- **Handling Non-Primitive Data:** The updateStudentIntoDB function receives an id and a payload as parameters. The id is used to search the document to update, and the payload contains the fields to update. The type for payload is Partial<TStudent> to allow partial updates.
- **Separating Non-Primitive Fields:** From the payload, we separate the non-primitive fields (name, guardian, localGuardian) and put the remaining fields in the remainingStudentData variable.
- **Modifying Non-Primitive Data:**
- **Check for the Presence of Nested Objects:** Verify if the name, guardian, and localGuardian objects are present and contain properties.
- **Iterate Over Entries:** For each of these objects, iterate over their entries (key-value pairs).
- **Assign Values Using Template Literals:** Use template literals to dynamically assign the values to their respective keys in the update data. This ensures that nested fields are updated correctly without overwriting existing data.
- **Updating the Document:**
- **Perform the Update:** Finally, update the document with the modified data.
- **Ensure Data Validity:** Set runValidators: true to ensure that all fields, including the updated ones, conform to the defined schema validation rules. This step is crucial for maintaining data integrity and consistency, preventing invalid data from being saved in the database.
This approach allows dynamic updates to nested objects without overwriting existing fields, ensuring data integrity and saving bandwidth.
### Conclusion
Updating non-primitive fields in MongoDB documents can be challenging, but with the right approach, it becomes manageable. By dynamically handling nested fields in the backend, you can ensure that updates are efficient and accurate. This method not only preserves existing data but also provides a flexible way to handle partial updates from the front end.
| md_enayeturrahman_2560e3 |
1,888,663 | Unified Project Development Environment: ServBay is Enough | Introduction The current development environment is not fully unified, with some... | 0 | 2024-06-14T14:34:12 | https://dev.to/servbay/unified-project-development-environment-servbay-is-enough-20pl | webdev, beginners, programming, php | ### Introduction
The current development environment is not fully unified, with some differences in details that, while not affecting 90% of the work, occasionally cause issues due to environment and version discrepancies.
**1. Dependency Issues**
- Different development environments might install different versions of PHP, Composer, Node.js, and other tools, potentially leading to dependency conflicts or compatibility issues.
- Different versions of libraries or frameworks can cause inconsistent behavior of the code across different environments.
**2. Configuration Differences**
- Environment variables, PHP configuration files (e.g., php.ini), Apache/Nginx configuration files, etc., may differ, causing the code to run well in one environment but fail in another.
- Database configuration, cache configuration, and other settings might also vary across environments, affecting application performance and stability.
**3. Operating System Differences**
- Even though all developers use Macs, different versions of macOS might have different system libraries and tool versions, leading to inconsistent behavior.
- OS-specific issues like file system permissions and paths can also cause the code to behave differently in different environments.
**4. Debugging and Testing Issues**
- If the [development environment](https://www.servbay.com) is not unified, team members might encounter different issues during debugging and testing, making it harder to locate and solve problems.
- Automated test scripts might behave inconsistently across different environments, affecting the CI/CD process.
**5. Production Environment Differences**
- If the development environment differs from the production environment, code that works fine during development might encounter unexpected issues when deployed to production.
### How to Solve It
It is well-known that using containerization technologies like Docker can create consistent development environments. However, these solutions often have high configuration dependencies.
All team members can use [ServBay](https://www.servbay.com) to ensure consistency in dependencies and configurations. Simply download and install ServBay, select the required software packages, and it will automatically configure the entire setup. This is simple and quick, and very friendly for beginners.
Download Link: [https://www.servbay.com](https://www.servbay.com)
---
Got questions? Check out our [support page](https://support.servbay.com) for assistance. Plus, you’re warmly invited to join our [Discord](https://talk.servbay.com) community, where you can connect with fellow devs, share insights, and find support.
If you want to get the latest information, follow [X(Twitter)](https://x.com/ServBayDev) and [Facebook](https://www.facebook.com/ServBay.Dev).
Let’s code, collaborate, and create together! | servbay |
1,888,662 | Decoding the Linux Command Line: 52 Indispensable Utilities Explained | Top 50 Linux Commands Every Regular User Must Know As a regular Linux user, mastering... | 0 | 2024-06-14T14:32:58 | https://dev.to/mnamesujit/decoding-the-linux-command-line-52-indispensable-utilities-explained-34kk | cmd, terminal, linux | # Top 50 Linux Commands Every Regular User Must Know
As a regular Linux user, mastering these essential commands can greatly enhance your productivity and efficiency. Let's dive into the top 52 Linux commands with practical examples.
1. **ls (List)**
- `ls` - List files and directories in the current directory.
- `ls -a` - List all files, including hidden ones.
- `ls -l` - List files with detailed information (permissions, owner, size, etc.).
- `ls -h` - List files with detailed information in human readable format.
2. **pwd (Print Working Directory)**
- `pwd` - Display the current working directory.
3. **cd (Change Directory)**
- `cd /path/to/directory` - Navigate to the specified directory.
- `cd ..` - Move up one directory level.
- `cd ~` - Navigate to your home directory.
- `cd -` - Go back to the last directory.
4. **mkdir (Make Directory)**
- `mkdir new_directory` - Create a new directory.
- `mkdir -p /path/to/nested/directories` - Create nested directories.
5. **mv (Move)**
- `mv file.txt /path/to/directory` - Move a file to a different directory.
- `mv old_name.txt new_name.txt` - Rename a file.
6. **cp (Copy)**
- `cp file.txt /path/to/directory` - Copy a file to a different directory.
- `cp -r directory1 /path/to/directory2` - Copy a directory and its contents.
7. **rm (Remove)**
- `rm file.txt` - Delete a file.
- `rm -r directory` - Delete a directory and its contents (use with caution!).
8. **touch (Create File)**
- `touch new_file.txt` - Create a new, empty file.
9. **ln (Create Link)**
- `ln -s /path/to/file link_name` - Create a symbolic link to a file.
10. **clear**
- `clear` - Clear the terminal screen.
11. **cat (Concatenate)**
- `cat file.txt` - Display the contents of a file.
- `cat file1.txt file2.txt > combined.txt` - Combine two files into one.
12. **echo (Print)**
- `echo "Hello, World!"` - Print a string.
- `echo $PATH` - Print the value of an environment variable.
13. **less (View File)**
- `less large_file.txt` - View a large file one page at a time (use arrow keys to navigate).
14. **man (Manual)**
- `man ls` - Display the manual page for the `ls` command.
15. **uname (System Information)**
- `uname -a` - Display detailed information about the system.
16. **whoami (User Information)**
- `whoami` - Print the current user's username.
17. **tar (Archive)**
- `tar -czf archive.tar.gz directory` - Create a compressed tar archive of a directory.
- `tar -xzf archive.tar.gz` - Extract files from a compressed tar archive.
18. **grep (Search)**
- `grep "pattern" file.txt` - Search for a pattern in a file.
- `ps aux | grep process_name` - Find processes containing a specific name.
19. **head (Show Top Lines)**
- `head -n 10 file.txt` - Display the first 10 lines of a file.
20. **tail (Show Bottom Lines)**
- `tail -n 20 log.txt` - Display the last 20 lines of a file.
21. **diff (Compare Files)**
- `diff file1.txt file2.txt` - Compare the contents of two files.
22. **cmp (Compare Files)**
- `cmp file1.txt file2.txt` - Check if two files are identical byte-by-byte.
23. **comm (Compare Files)**
- `comm -13 file1.txt file2.txt` - Show lines unique to each file and common lines.
24. **sort (Sort)**
- `sort file.txt` - Sort the lines of a file in alphabetical order.
- `sort -n file.txt` - Sort the lines of a file numerically.
25. **export (Set Environment Variables)**
- `export PATH=$PATH:/new/path` - Add a new path to the `PATH` environment variable.
26. **zip (Compress Files)**
- `zip archive.zip file1.txt file2.txt` - Create a ZIP archive with multiple files.
27. **unzip (Extract Files)**
- `unzip archive.zip` - Extract files from a ZIP archive.
28. **ssh (Secure Shell)**
- `ssh user@remote_host` - Connect to a remote system via SSH.
29. **service (Manage Services)**
- `service apache2 start` - Start the Apache web server service.
- `service mysql status` - Check the status of the MySQL service.
30. **ps (Process Status)**
- `ps aux` - Display detailed information about running processes.
31. **kill and killall (Terminate Processes)**
- `kill 1234` - Terminate a process with the specified PID (1234).
- `killall process_name` - Terminate all processes with a specific name.
32. **df (Disk Usage)**
- `df -h` - Display disk usage in a human-readable format.
33. **mount (Mount File Systems)**
- `mount /dev/sdb1 /mnt/usb` - Mount a USB drive to the `/mnt/usb` directory.
34. **chmod (Change Permissions)**
- `chmod 755 file.sh` - Grant read, write, and execute permissions to the owner, and read and execute permissions to group and others.
35. **chown (Change Ownership)**
- `chown user:group file.txt` - Change the owner and group of a file.
36. **ifconfig (Network Configuration)**
- `ifconfig` - Display information about network interfaces and IP addresses.
37. **traceroute (Trace Network Route)**
- `traceroute example.com` - Trace the network path to a remote host.
38. **wget (Web Get)**
- `wget https://example.com/file.zip` - Download a file from a web server.
39. **ufw (Uncomplicated Firewall)**
- `ufw enable` - Enable the firewall.
- `ufw allow 22` - Allow incoming connections on port 22 (SSH).
40. **iptables (Firewall)**
- `iptables -L` - List current firewall rules.
- `iptables -A INPUT -p tcp --dport 80 -j ACCEPT` - Allow incoming TCP connections on port 80 (HTTP).
41. **apt, pacman, yum, rpm (Package Managers)**
- `apt update && apt upgrade` (Ubuntu/Debian) - Update package lists and upgrade installed packages.
- `pacman -Syu` (Arch Linux) - Synchronize package databases and upgrade installed packages.
- `yum update` (CentOS/RHEL) - Update installed packages.
- `rpm -ivh package.rpm` - Install an RPM package.
42. **sudo (Escalate Privileges)**
- `sudo command` - Run a command with superuser (root) privileges.
43. **cal (Calendar)**
- `cal` - Display the current month's calendar.
- `cal 2024` - Display the entire year's calendar for 2024.
44. **alias (Create Command Shortcuts)**
- `alias ll='ls -l'` - Create an alias for the `ls -l` command.
45. **dd (Data Duplicator)**
- `dd if=/dev/zero of=/path/to/file bs=1M count=1024` - Create a 1GB file filled with zeros.
- `dd if=/path/to/iso of=/dev/sdx` - Write an ISO image to a USB drive.
46. **whereis (Locate Command)**
- `whereis ls` - Find the binary, source, and manual page files for the `ls` command.
47. **whatis (Command Description)**
- `whatis ls` - Display a brief description of the `ls` command.
48. **top (Process Monitor)**
- `top` - Display real-time information about running processes and system resource usage.
49. **useradd and usermod (User Management)**
- `useradd new_user` - Create a new user account.
- `usermod -aG sudo new_user` - Add an existing user to the sudo group.
50. **passwd (Change Password)**
- `passwd` - Change the password for the current user.
- `passwd user_name` (as root) - Change the password for a specific user.
51. **curl (Transfer Data)**
- `curl https://example.com` - Fetch the contents of a URL.
- `curl ifconfig.me` - Display your public IP address.
52. **ping (Test Network Connectivity)**
- `ping google.com` - Test connectivity to a remote host.
- `ping -c 2 google.com` - Send 2 ping packets and stop.
53. **netstat (Network Statistics)**
- `netstat -tunlp` - Display listening network ports and associated processes.
With these 52 essential Linux commands under your belt, you'll be well-equipped to navigate the command line, manage files and processes, customize your system, and supercharge your productivity on the Linux operating system. | mnamesujit |
1,888,570 | AWS GameDay: Frugality Fest | AWS GameDay is an engaging, hands-on learning event where participants tackle real-world technical... | 0 | 2024-06-14T14:32:42 | https://dev.to/aws-builders/aws-gameday-frugality-fest-4889 | gameday, awsusergroup, awscommunity, communitybuilder | AWS GameDay is an engaging, hands-on learning event where participants tackle real-world technical challenges using AWS solutions in a team-based environment. Unlike traditional workshops, GameDays are open-ended and encourage creative problem-solving.
To foster collaboration among AWS User Groups in Romania, we organized a GameDay event focused on building cost-effective applications and mastering cost-efficiency strategies. We chose the "Frugality Fest" theme, a trending topic for 2024, because it aligns well with our evening meetup schedule, typically starting at 18:30. This ensured the event wouldn't stretch late into the night, making it convenient for participants who join after their workday.
Each AWS Usergroup from Romania ([Timisoara](https://www.meetup.com/aws-timisoara/), [Cluj-Napoca](https://www.meetup.com/transylvaniacloud/), [Bucuresti](https://www.meetup.com/bucharest-aws-user-group/), [Iasi](https://www.meetup.com/aws-ro/)) and [Moldova](https://www.meetup.com/amazon-web-services-user-group-md/) hosted on-site events coordinated remotely by AWS Romania. Each location had a dedicated AWS Romania representative to help with organization and coordination.
Teams of four participated, with some pre-formed and others assembled ad-hoc. The event kicked off with a 30 minute introduction covering the event's objectives, the scenario and the rules.
At 18:30, the game began and all 17 teams accessed their resources. Each venue featured a live scoreboard displayed prominently, updating in real-time.
The game ran for 2.5 hours, filled with intense communication, laughter, frustration and calls for help. After the clock stopped, we captured a screenshot of the final scoreboard. The top three teams were the most experienced but everyone enjoyed the event and eagerly asked about the next GameDay.
While I won't spoil the specific tasks, they involved AWS services like EC2, RDS, S3, VPC and CloudWatch. A tip from the winners: prioritize database optimization!
If you'd like more details about this event, feel free to reach out to me on [LinkedIn](https://www.linkedin.com/in/lucianpatian/). If you’re interested in organizing a similar event, make sure to contact your local AWS Solutions Architect or Technical Account Manager.
Event photos:
 | lp |
1,888,659 | How to create an API endpoint in astro | Introduction What's the setup? 1. Ready your Astro project 2. SSR 2.1 Adapter 2.2 server or... | 0 | 2024-06-14T14:32:12 | https://daniel.es/blog/how-to-create-an-api-endpoint-in-astro/ | astro, webdev, typescript, javascript | - [Introduction](#introduction)
- [What's the setup?](#whats-the-setup)
- [1. Ready your Astro project](#1-ready-your-astro-project)
- [2. SSR](#2-ssr)
- [2.1 Adapter](#21-adapter)
- [2.2 `server` or `hybrid`](#22-server-or-hybrid)
- [2.3 A note on environment variables](#23-a-note-on-environment-variables)
- [2.4 A note on `console.log`](#24-a-note-on-consolelog)
- [3. File structure](#3-file-structure)
- [The API endpoint](#the-api-endpoint)
- [1. Create the file](#1-create-the-file)
- [2. The code](#2-the-code)
- [The form](#the-form)
## Introduction
Gone are the days when you had to create a separate API server to serve your frontend application. With Astro, you can create API endpoints directly in your app. Which means you can even create a full-stack application with just one codebase.
Personally, I use these endpoints for simple actions such as:
- Contact Forms
- Newsletter subscriptions
- User registration
- Even user authentication sometimes
It's also useful for when you need to fetch and process data from a source that requires authentication (I.e. an API key) and you don't want to expose that key in the frontend.
In this article we'll go through the steps to create an API endpoint in Astro.
## What's the setup?
In this article we'll create a **simple API endpoint that creates a contact in Brevo**, which is mostly what I use these endpoints for. You can replace this with any other service you want to interact with.
### 1. Ready your Astro project
If you're new to Astro or haven't set up an Astro project yet, I recommend you to check out the [official documentation](https://docs.astro.build/en/getting-started/).
You can also start with one of their [themes](https://astro.build/themes/).
### 2. SSR
In order to have a working API endpoint that works at runtime, you need to enable [SSR (Server Sider Rendering)](https://docs.astro.build/en/guides/server-side-rendering/).
SSR allows you to have the app run on the server before it gets to the client.
#### 2.1 Adapter
For this, you will need an adapter.
> What an adapter does is it allows you to run your SSR Astro App in different environments. For example, you can run it in a serverless environment like Vercel or Netlify, or in a Node.js server.
You can see a list of official and community adapters [here](https://docs.astro.build/en/guides/server-side-rendering/#official-adapters).
For this article, I'll use the [`@astrojs/adapter-node` adapter](https://docs.astro.build/en/guides/integrations-guide/node/) since I host my side in a Node docker container.
Super easy to install:
```bash
npx astro add node
```
#### 2.2 `server` or `hybrid`
Astro [allows you to run SSR in 2 ways](https://docs.astro.build/en/guides/server-side-rendering/#enable-on-demand-server-rendering):
- `server`: On-demand rendered by default. Basically uses the server for everything. Use this when most of your site should be dynamic. You can opt-out of SSR for individual pages or endpoints.
- `hybrid`: Pre-rendered to HTML by default. It does not pre-render the page on the server. Use this when most of your site should be static. You can opt-in to SSR for individual pages or endpoints.
For my usecase where most of my site is static (it's a landing page after all) I use `hybrid`:
```js
// astro.config.mjs
import { defineConfig } from "astro/config";
import node from "@astrojs/node";
export default defineConfig({
output: "hybrid",
adapter: node({
mode: "standalone",
}),
});
```
#### 2.3 A note on environment variables
If you're used to Astro, you know that you can use environment variables by calling:
```ts
const MY_VARIABLE = import.meta.env.VARIABLE_NAME;
```
However, because Astro is static by default, what this really does is get the environment variable at build time. Then, the variable is hardcoded into the build code, which means that if you change the environment variable after the build, it won't be reflected in the code.
If you use SSR it works differently, `import.meta.env` won't work since it's available at build time but not at runtime on the server.
You will need to use `process.env` instead:
```ts
const MY_VARIABLE = process.env.VARIABLE_NAME;
```
BUT WAIT!
There's another catch, and that's that `process.env` is not available with `npm run dev`, which means your code will crash when you try to run it locally.
The solution:
```ts
const MY_VARIABLE = import.meta.env.VARIABLE_NAME ?? process.env.VARIABLE_NAME;
```
This code will try to get the environment variable from `import.meta.env` first, and if it's not available it will try to get it from `process.env`. This way, your code will work both in development and production.
#### 2.4 A note on `console.log`
If you're used to using `console.log` to debug your code, you'll know that it will show up in the browser console when you're running the app in development mode.
When using `console.log` in an SSR component, because it runs on the server, the logs will show up in the terminal where you're running the app.
So if you're looking for your logs and can't find them, check the terminal where you're running the app.
### 3. File structure
The full functionality needs 2 files:
- A `.js` or `.ts` API endpoint file that lives in the `src/pages/api` directory.
- A form that gets the user input and sends it to the API endpoint. I personally like to do this in a `.tsx` file because I can then use the full power of react (`react-hook-form` and `zod`) to handle the form.
Place this form wherever you like, I like having all my forms in `src/components/forms`.
That's pretty much it! The form will send the data to our API endpoint, which will then process it and send it to Brevo.
---
## The API endpoint
### 1. Create the file
Let's create the API endpoint that will send the data to Brevo.
You can create this endpoint wherever you want under the `src/pages/` directory depending on where you want it to be accessible.
For instance, I like my endpoints to be accessible under `/api/` so I create a `src/pages/api/` directory.
So my endpoint file will be `src/pages/api/create-brevo-contact.ts`.
This means that I will be able to access it at `http://mydomain.com/api/create-brevo-contact`.
---
### 2. The code
Your API endpoint code should have a pretty simple structure:
```ts
// SSR API endpoint template
// Tell Astro that this component should run on the server
// You only need to specify this if you're using the hybrid output
export const prerender = false;
// Import the APIRoute type from Astro
import type { APIRoute } from "astro";
// This function will be called when the endpoint is hit with a GET request
export const GET: APIRoute = async ({ request }) => {
// Do some stuff here
// Return a 200 status and a response to the frontend
return new Response(
JSON.stringify({
message: "Operation successful",
}),
{
status: 200,
}
);
};
```
Following the template above, this is a simple POST API endpoint to create a contact in Brevo. Everything is commented so you can understand what's going on:
```ts
// src/pages/api/create-brevo-contact.ts
// Because I chose hybrid, I need to specify that this endpoint should run on the server:
export const prerender = false;
// Import the APIRoute type from Astro
import type { APIRoute } from "astro";
// This is the function that will be called when the endpoint is hit
export const POST: APIRoute = async ({ request }) => {
// Check if the request is a JSON request
if (request.headers.get("content-type") === "application/json") {
// Get the body of the request
const body = await request.json();
// Get the email from the body
const email = body.email;
// Declares the Brevo API URL
const BREVO_API_URL = "https://api.brevo.com/v3/contacts";
// Gets the Brevo API Key from an environment variable
// Check the note on environment variables in the SSR section of this article to understand what is going on here
const BREVO_API_KEY =
import.meta.env.BREVO_API_KEY ?? process.env.BREVO_API_KEY;
// Just a simple check to make sure the API key is defined in an environment variable
if (!BREVO_API_KEY) {
console.error("No BREVO_API_KEY defined");
return new Response(null, { status: 400 });
}
// The payload that will be sent to Brevo
// This payload will create or update the contact and add it to the list with ID 3
const payload = {
updateEnabled: true,
email: email,
listIds: [3],
};
// Whatever process you want to do in your API endpoint should be inside a try/catch block
// In this case we're sending a POST request to Brevo
try {
// Make a POST request to Brevo
const response = await fetch(BREVO_API_URL, {
method: "POST",
headers: {
accept: "application/json",
"api-key": BREVO_API_KEY,
"content-type": "application/json",
},
body: JSON.stringify(payload),
});
// Check if the request was successful
if (response.ok) {
// Request succeeded
console.log("Contact added successfully");
// Return a 200 status and the response to our frontend
return new Response(
JSON.stringify({
message: "Contact added successfully",
}),
{
status: 200,
}
);
} else {
// Request failed
console.error("Failed to add contact to Brevo");
// Return a 400 status to our frontend
return new Response(null, { status: 400 });
}
} catch (error) {
// An error occurred while doing our API operation
console.error(
"An unexpected error occurred while adding contact:",
error
);
// Return a 400 status to our frontend
return new Response(null, { status: 400 });
}
}
// If the POST request is not a JSON request, return a 400 status to our frontend
return new Response(null, { status: 400 });
};
```
That's it, you now have a working API endpoint that will create a contact in Brevo when hit with a POST request!
---
## The form
As a bonus, I also want to show you how I code my forms to make them responsive.
For this example, I'll create a simple form, with only an email field and a submit button, that will send the email a user inputs to the API endpoint we created.
Here's the code:
> Note that this code is using shadcn ui components for the HTML, you might need to replace them with your own components.
```tsx
// WaitlistForm.tsx
// Zod validation stuff
const WaitlistFormSchema = z.object({
email: z
.string()
.min(1, "Please enter a valid email")
.email("Please enter a valid email"),
});
type WaitlistFormValues = z.infer<typeof WaitlistFormSchema>;
const WaitlistForm = () => {
// Hooks to check the status of the form
const [isSubmitting, setIsSubmitting] = useState(false);
const [isSuccess, setIsSuccess] = useState(false);
const [error, setError] = useState("");
// React Hook Form stuff
const form = useForm<WaitlistFormValues>({
resolver: zodResolver(WaitlistFormSchema),
defaultValues: {
email: "",
},
});
// Function that sends the data to the API endpoint when the form is submitted
const onSubmit = async (data: WaitlistFormValues) => {
setIsSubmitting(true);
// Ping out API endpoint
const response = await fetch("/api/create-brevo-contact", {
method: "POST",
headers: {
"content-type": "application/json",
},
body: JSON.stringify(data),
});
// If successful, reset the form and show a success message
if (response.ok) {
form.reset();
setIsSuccess(true);
} else {
// If failed, show error message
console.error("Failed to add contact");
setIsSuccess(false);
setError("There's been an error. Please try again.");
}
setIsSubmitting(false);
};
return (
<>
{isSuccess && (
<Alert className="mb-3 md:mb-8 bg-green-100 border-green-300">
<AlertTitle>Thanks!</AlertTitle>
<AlertDescription>
We've added you to the waitlist!
<br />
</AlertDescription>
</Alert>
)}
{!isSuccess && error && (
<Alert className="mb-8 bg-red-100 border-red-300">
<AlertTitle>Error</AlertTitle>
<AlertDescription>{error}</AlertDescription>
</Alert>
)}
<Form {...form}>
<form
onSubmit={form.handleSubmit(onSubmit)}
className="space-y-4 md:space-y-8"
>
<FormField
control={form.control}
name="email"
render={({ field }) => (
<FormItem>
<FormLabel>Email</FormLabel>
<FormControl>
<Input
className="bg-transparent"
placeholder="email@gmail.com"
{...field}
/>
</FormControl>
<FormMessage />
</FormItem>
)}
/>
<Button type="submit" disabled={isSubmitting}>
<Loader2
className={`w-6 h-6 mr-2 animate-spin ${
isSubmitting ? "block" : "hidden"
}`}
/>
Submit
</Button>
</form>
</Form>
</>
);
};
export default WaitlistForm;
```
| onticdani |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.