id int64 5 1.93M | title stringlengths 0 128 | description stringlengths 0 25.5k | collection_id int64 0 28.1k | published_timestamp timestamp[s] | canonical_url stringlengths 14 581 | tag_list stringlengths 0 120 | body_markdown stringlengths 0 716k | user_username stringlengths 2 30 |
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1,732,272 | CryptoNews Analytics: Review | 👀Mantle rallies by over 30% as Solana falls below $100; GFOX raises over $2.75m in... | 0 | 2024-01-17T12:59:09 | https://dev.to/victordelpino/cryptonews-analytics-review-17o2 | crypto, cryptocurrency, blockchain, analytics | ## 👀Mantle rallies by over 30% as Solana falls below $100; GFOX raises over $2.75m in presale
**Mantle pumps by over 30%**
MNT has surged sharply, breaking out of an upward channel pattern and reaching a high of $0.85.
However, profit-taking may have occurred at this level. Both moving averages are sloping upwards, indicating a bullish trend. Still, caution is advised due to a negative divergence on the RSI.
The next major challenge is $0.85; if this level is broken, the price could rise to $1. Conversely, a break below the 50-SMA could signal the end of the uptrend, potentially leading to a fall to $0.65 or $0.58.
Solana drops below $100
Solana has faced challenges after reclaiming the $100 threshold.
Despite a slight recovery, SOL grappled with profit-taking and a descending triangle pattern formation, falling below $100.
This comes after SOL hit multi-year highs surpassing $125 in December, fueled by broader crypto market tailwinds and renewed demand for layer-1 alternatives to Ethereum.
The robust rally since September has given way to intensifying selling pressure following extreme overbought conditions.
Nonetheless, bulls have shown dip-buying conviction around the $85 support level twice thus far in 2024.
Looking ahead, watching SOL’s ability to maintain its footing above the technically significant $85 mark will determine whether it avoids slipping toward its next key area of support, around $65. The crucial $85 zone remains a battlefield between exhausted rally participants taking profits and renewed buying interest aiming to spark another leg higher.
 | victordelpino |
1,732,387 | Choose the best solution to elevate your OneDrive experience. | BluVault - Your Certified Microsoft Co-sell Ready Partner! Listed on Microsoft AppSource and Azure,... | 0 | 2024-01-17T10:06:19 | https://dev.to/parablu/choose-the-best-solution-to-elevate-your-onedrive-experience-21n0 | onedrive, datasecurity, dataprotection, databackup |
BluVault - Your Certified Microsoft Co-sell Ready Partner! Listed on Microsoft AppSource and Azure, BluVault offers seamless OneDrive Backup and Restore solutions, trusted by thousands worldwide. Explore the power of a proven partner for your data security needs.
Ready to join the ranks of satisfied users? Discover BluVault today by visiting our [webpage](https://parablu.com/sign-up-for-bluvault-demo/) | parablu |
1,732,471 | Does an HDTV Antenna Work? | The humble HDTV antenna often gets overlooked in an era dominated by streaming services and digital... | 0 | 2024-01-17T11:29:40 | https://dev.to/samanthabrandon/does-an-hdtv-antenna-work-5333 | The humble HDTV antenna often gets overlooked in an era dominated by streaming services and digital cable subscriptions. Many question whether these antennas still hold relevance in a world where advanced technologies seem to reign supreme. The purpose of this article is to explore the effectiveness of HDTV antennas and debunk common misconceptions surrounding their functionality.
## Understanding HDTV Antennas
HDTV antennas, also known as over-the-air antennas, have been around for decades. Contrary to popular belief, they have not become obsolete in the age of smart TVs and streaming platforms. The primary function of an **[HDTV antenna](https://unlimitedantenna.com/collections/all)** is to capture over-the-air signals broadcast by local TV stations. These signals transmit high-definition content, allowing viewers to enjoy a variety of channels without the need for a cable or satellite subscription.
### The Myth Do HDTV Antennas Work?
One common misconception is that HDTV antennas cannot deliver clear and reliable signals. The truth is that these antennas can provide crystal-clear images and sound for local channels broadcasting in high definition. The effectiveness of an HDTV antenna largely depends on factors such as location, antenna type, and the presence of obstructions like tall buildings or natural barriers.
### Factors Influencing HDTV Antenna Performance
**1. Geographical Location**
- Residents in urban areas generally experience better reception due to the proximity of broadcast towers.
- Rural areas may face challenges due to increased distance from broadcasting sources.
**2. Antenna Type**
- Indoor antennas are suitable for urban dwellers with strong local signals.
- Outdoor antennas are more effective in rural areas where signals may be weaker.
**3. Signal Interference**
- Electronic devices and obstacles like buildings or trees can interfere with signal reception.
### Best Practices for Optimal **[HDTV Antenna](https://unlimitedantenna.com)** Performance
**1. Antenna Placement**
- Position the antenna near a window or in an area with minimal obstructions.
- Elevate the antenna for improved signal capture.
**2. Channel Scan**
- Regularly perform a channel scan to ensure your antenna is tuned to available channels.
**3. Amplifiers**
- Consider using signal amplifiers in areas with weak signals to enhance reception.
### Best Buy HDTV Antenna - Exploring Options
While we won't delve into specific brand names, it's worth noting that when searching for the best-buy HDTV antenna, factors like customer reviews, range, and features should be considered. An antenna that suits one location might not be ideal for another, so it's essential to choose based on individual needs and geographic considerations.
### Conclusion
In conclusion, HDTV antennas do indeed work and remain a viable option for accessing local channels in high definition. By understanding the factors influencing their performance and implementing best practices, viewers can enjoy a reliable and cost-effective alternative to traditional cable or satellite services. When seeking the **[best-buy HDTV antenna](https://unlimitedantenna.com/collections/all)**, a thoughtful approach considering personal requirements will help ensure a satisfactory viewing experience. | samanthabrandon | |
1,732,552 | 🏞️5 beautiful open-source web apps to learn from and get inspired 🙇♀️💡 | As the title says, in this post, we'll cover open-source web apps you can learn from and use as a... | 0 | 2024-01-17T13:11:12 | https://dev.to/matijasos/5-beautiful-open-source-web-apps-to-learn-from-and-get-inspired-280f | webdev, javascript, beginners, opensource | As the title says, in this post, we'll cover open-source web apps you can learn from and use as a starting point for your next project. Stick around till the end, as there is a cool bonus waiting for you there!
Before we get into it, a few words of wisdom (hopefully 😅):
## The importance of (open source) role models
**When starting a new project from scratch, one of the most helpful things you can do is pick one or more role models.** For example, if you’re building a new productivity app, you might look after products such as Trello or Asana. Of course, your app will not be the same, and you probably have in mind some core differences that make your app unique, but there will still be a lot of shared concepts and mechanisms that you don’t want to reinvent.
Even if your role model is a closed-source app, you will still get a lot of value simply by observing it in the wild - design elements, UI, user journey, and terminology used, …
**But now imagine if the app you decided to learn from was open source, and you could easily access its full source code on GitHub - that opens a whole new universe of possibilites!** Next to simply observing how the app works from the “outside” and guessing what’s happening under the hood, now you get to see every single detail and understand every decision made. Architecture, deployment, API design, libraries, and algorithms used - it’s all in there for you to see!
## Mind the scale (aka don’t over-engineer)
<figure>
<img src="https://dev-to-uploads.s3.amazonaws.com/uploads/articles/i51owsfvx8cmajcvvues.png">
<figcaption>Credit: [this tweet](https://twitter.com/Dominus_Kelvin/status/1747315668083417440) by Dominus Kelvin</figcaption>
</figure>
One more thing to keep in mind is the stage at which your project is currently. Below, we’ll see different examples of open-source SaaS apps, ranging from indie hacker, “build it in a weekend” side projects to enterprise-grade web platforms. **Although you might find a project with millions of users an amazing resource to learn from, keep in mind that not everything they did is what you have to strictly follow. Their architectural and design decisions will often be more complex due to the sheer scale and amount of users they experience daily**. If you are just starting out, it is best to stick with the simplest (but still sound) approach until you, hopefully, need a more advanced one.
> From here on, for each app we mention, we’ll use a “t-shirt size” methodology (S, M, L, …) to give you a rough feeling of its size and complexity, both in terms of features and users.
Now, with the foreword out of the way, let’s together check out some amazing open-source apps you can start learning from right away:
## [CoverLetterGPT](https://coverlettergpt.xyz/) - the perfect starting spot for an AI-powered SaaS
💾 **Source code**: https://github.com/vincanger/coverlettergpt
👕 **Size**: S
**🛠️ Stack**: Chakra UI, React, Node.js, and Prisma, powered by [Wasp](https://github.com/wasp-lang/wasp)
[CoverLetterGPT.xyz](http://CoverLetterGPT.xyz) is every indie hacker’s dream - **it’s a GPT-powered SaaS, fully open-source, and most importantly, it’s a real product that people use every day and also pay for**! Given your CV and a job description, this tool will generate a professionally written cover letter. You can then further adjust the tone for each paragraph or edit it manually.
It’s perfect for learning since it isn’t too big and the architecture is simple, but it has all the features you might need in an app - social authentication (Google), cron jobs, file upload, GPT integration, payment integration via Stripe, and even payments via Bitcoin!
CoverLetterGPT is made with React, Node.js, and Prisma, powered by the [Wasp framework](https://github.com/wasp-lang/wasp), which takes care of all the plumbing and removes a ton of boilerplate. **The best part is you can deploy your app for free when you’re ready by running a single CLI command**: `wasp deploy`.
<center><h3>🚨 Attention 🚨</h3></center>
> Hint: The Wasp team recently released [OpenSaaS](https://kdta.io/github-wasp-lang-open_3), **a completely free and open-source boilerplate starter for React and Node.js**. It contains everything mentioned + Tailwind, admin dashboard, landing page, blog, and more. [Check it out here](https://kdta.io/github-wasp-lang-open_4) to get started even faster.
<center>{% cta https://kdta.io/github-wasp-lang-open_2 %} ⭐️ Star OpenSaaS on GitHub ⭐️ {% endcta %}</center>
## Supabase Studio - a dashboard masterpiece 🖼️
💾 **Source code**: https://github.com/supabase/supabase/tree/master/apps/studio
**👕 Size**: M/L
**🛠️ Stack:** Next.js (React), Tailwind
[Supabase](https://supabase.com/) is a renowned open-source project with its core written in Elixir. But, since we are focusing on web apps in this article, we’ll take a look at **Supabase Studio - a dashboard where you can see and manage all of your projects. It is a masterpiece in itself and also fully open-source!**
The design is custom-made with Tailwind, and there are plenty of elements you might want to reuse for your own project - user management, tables, lists, etc. It also has its own AI integration for writing SQL queries, which works surprisingly well.
## Papermark - the open-source DocSend alternative ✉️
💾 **Source code**: https://github.com/mfts/papermark
👕 **Size**: M
**🛠️ Stack**: Next.js (React), Tailwind, Prisma
[Papermark](https://github.com/mfts/papermark) has recently been getting a lot of love from the community, especially for its clean design and intuitive interface. Although it might look simple from the outside, this app packs a lot of functionalities that make everything work smoothly: file upload, email sending, built-in analytics, and custom domains…
**If you’re building something that involves a lot of document management and user collaboration**, this is definitely a project you should take a look at.
## [Crowd.dev](http://Crowd.dev) - dev community data platform, made with Vue 📊👩💻
💾 **Source code**: https://github.com/CrowdDotDev/crowd.dev
**👕 Size**: M
**🛠️ Stack:** Vue, Node.js
[Crowd.dev](http://Crowd.dev) is one of the latest rising stars of GitHub - it is a platform for monitoring your community activity, be it on Slack or Discord. If you are running your own developer community, a tool like this is a must-have in order to understand what’s happening and who the most active members are.
It offers a lot on the dashboard side, but its other forte is **integrations - if you are building an app that ingests and processes a lot of data from outside sources, this is your go-to role model**. Bonus points if you are a Vue lover because that’s what this project is made with!
## Habitica - Habit tracker as an RPG 🐲⚔️
💾 **Source code**: https://github.com/HabitRPG/habitica
**👕 Size**: L
**🛠️ Stack:** Vue, Bootstrap, SAAS, Node.js, MongoDB
[Habitica](https://habitica.com/) is one of the coolest web apps (they also have iOS and Android apps) I’ve seen in a while - it helps you organize your life, tasks, and habits through the RPG game! Imagine a Kanban board like Trello, but for each task you complete, you earn XP and gold, and you can even team up with friends to take up quests.
Habitica has been around for 10 years, and it has stood the test of time beautifully with a classical stack of Vue, Node.js/Express, and MongoDB. **If you want to see how rich, interactive UIs are built but also what kind of architecture is needed to run a project at this scale, this app is definitely worth checking out.** Who knows, you might even end up as a Habitican yourself!
## 🏆 **Bonus** 🏆 Appflowy - Notion alternative in Rust and Flutter 🤯
💾 **Source code**: https://github.com/AppFlowy-IO/AppFlowy
**👕 Size**: M
**🛠️ Stack:** Flutter, Rust
If you came this far, you deserved a special treat! This one isn’t a web app, but it is so cool I couldn’t help myself - it is **a Notion alternative (so note-taking on steroids) built with Rust and Flutter**! Due to its local-first nature, the user experience is extremely smooth, and it also syncs everything to the cloud (which you can host yourself if you wish).
**If you’ve been playing around with Rust but are also looking for a project to contribute to that you could use daily, Appflowy might be a perfect fit.** It has everything from data storage to business logic and UI, all in one package for you to learn and see what you find the most interesting.
## That's it! I'd love to hear from you 🫵
That's all we had for today (*drops the mic*), thanks so much for reading! I hope you found it useful and/or interesting.
There were so many open-source web apps I came across while writing this, and it was so hard to select only 5 of them.
**Now, I'd love to hear from you - what are your favorite open-source apps, and how are you using them? Write it below in the comments 👇**
Thank you, and see you next time! 👋 | matijasos |
1,732,636 | I created basic analytics with Vercel Postgres, Drizzle & Astro | TL;DR Full code can be found on GitHub, live data can be seen on my website. ... | 0 | 2024-01-17T13:40:29 | https://www.thomasledoux.be/blog/basic-analytics-vercel-postgres-astro | astro, database, vercel, drizzle | ## TL;DR
Full code can be found on [GitHub](https://github.com/thomasledoux1/website-thomas-astro), live data can be seen on [my website](https://thomasledoux.be/page-views).
## Why?
Since Vercel's [analytics](https://vercel.com/analytics) pricing is a bit too expensive for my use case (where I hit the limit of 2,500 requests per month), and I didn't like using Google Analytics (not a big fan of Google), I decided to build my own analytics dashboard.
Databases was something I didn't work with much before directly, so I decided to use an ORM, [Drizzle](https://orm.drizzle.team/), which is quite lightweight and easy to use.
## Setting up the database
I used [Vercel Postgres](https://vercel.com/docs/storage/vercel-postgres) as my database and [Astro](https://astro.build/) as my frontend framework.
Vercel Postgres is basically a wrapper around [Neon](https://neon.tech/), a serverless SQL server provider.
Setting up the database is pretty straightforward, I just followed the [docs](https://vercel.com/docs/storage/vercel-postgres/quickstart) and got my database up and running in no time.
Once my database was up and running, the time came to set up the database schema.
The schema is pretty simple, it consists of a table called `page_views` with the following columns:
- `url`: the URL of the viewed page
- `date`: the data of the page view
The SQL query to create this table is the following:
```sql
CREATE TABLE page_views (
url VARCHAR(255) NOT NULL,
date TIMESTAMP NOT NULL
);
```
## Setting up Drizzle
To set up the Drizzle client, I first created a `pool` using the `@vercel/postgres` createPool function.
Once the pool is created, I can instantiate the Drizzle client with the pool.
In the client I also create an export of the PageViews table, which is a Drizzle table that represents the `page_views` table in the database.
```ts
import { createPool } from "@vercel/postgres";
import { pgTable, text, timestamp } from "drizzle-orm/pg-core";
import { drizzle } from "drizzle-orm/vercel-postgres";
export const PageViewsTable = pgTable("page_views", {
url: text("url").notNull(),
date: timestamp("date").defaultNow().notNull(),
});
// Connect to Vercel Postgres
const pool = createPool({
connectionString: import.meta.env.POSTGRES_URL,
});
const client = drizzle(pool);
export { client };
```
## Filling up the database
Now that the database is set up, it's time to fill it up with data.
Since I was using Google Analytics before this, I had a lot of data already available.
Porting this data to my own database required a bit of work:
- Export the data from Google Analytics by downloading a CSV file
- Create an API route in Astro
- Inside the API route, convert the CSV file to JSON with [csv-parser](https://github.com/mafintosh/csv-parser)
- Once converted, insert the data into the database using the Drizzle client
The code for the API route is the following:
```ts
import type { APIRoute } from "astro";
import csv from "csv-parser";
import fs from "fs";
import { PageViewsTable, client } from "~/lib/dbClient";
export const GET: APIRoute = async () => {
const csvFilePath = "./public/data-export.csv";
const jsonArray: { "Page path": string; views: string }[] = [];
fs.createReadStream(csvFilePath)
.pipe(csv())
.on("data", (data) => jsonArray.push(data))
.on("end", async () => {
for (const item of jsonArray) {
let count = 0;
while (count < parseInt(item.views)) {
await client.insert(PageViewsTable).values({
url: item["Page path"],
date: new Date(),
});
count++;
}
}
});
return new Response(
JSON.stringify({
message: "Succesfully updated views",
}),
{ status: 200 },
);
};
```
After a few seconds or minutes (depending on the size of your CSV and amount of views), the database should be filled up with data.
## Tracking new views
Now the database is filled up with the historic data, but I'm not tracking new views yet.
To do this, I created a new API route that inserts a new row into the database every time a page is viewed.
This API route is called when the `astro:page-load` event is triggered on the document (see [Astro docs on View Transitions](https://docs.astro.build/en/guides/view-transitions/#astropage-load)).
This event is triggered whenever a new page is loaded when you're using View Transitions.
I use the `isbot` package to check if the page is loaded by a crawler/bot to prevent bots from being tracked, and when running the site in development mode, I return an error to prevent the database from being filled up with development views.
The code for the API route is the following:
```ts
export const prerender = false;
import { isbot } from "isbot";
import type { APIRoute } from "astro";
import { PageViewsTable, client } from "~/lib/dbClient";
export const POST: APIRoute = async ({ request }) => {
if (import.meta.env.NODE_ENV === "development") {
return new Response(
JSON.stringify({
error: "This endpoint is not available in development",
}),
{ status: 400 },
);
}
if (isbot(request.headers.get("user-agent"))) {
return new Response(
JSON.stringify({
error: "This endpoint is not available for bots",
}),
{ status: 400 },
);
}
const body = await request.json();
if (!body.url) {
return new Response(
JSON.stringify({
error: "Missing URL",
}),
{ status: 400 },
);
}
if (body.url === "/page-views") {
return new Response(
JSON.stringify({
error: "This url is not tracked",
}),
{ status: 202 },
);
}
try {
await client.insert(PageViewsTable).values({
url: body.url,
date: new Date(),
});
} catch (e) {
console.error(e);
return new Response(
JSON.stringify({
error: "Error updating views",
}),
{ status: 400 },
);
}
return new Response(
JSON.stringify({
message: "Succesfully updated views",
}),
{ status: 200 },
);
};
```
## Creating the dashboard
Now I have my historic and new data coming into my database, it's time to create the dashboard.
I created a (publicly available) route called `/page-views` that shows the dashboard.
This is a `.astro` page that uses the Drizzle client to query the database and show the data.
There's a few things going on here:
- A search input that allows you to search for a specific page
- A dropdown with some predefined time ranges (past day, past week, past month, past year, all time)
- A bar chart that shows the amount of views per page
- Pagination buttons to go to the next or previous page of results, with a maximum of 10 results per page
The code to handle the query to the database looks like this:
```ts
import { and, count, countDistinct, desc, gte, like, lte } from "drizzle-orm";
import { PageViewsTable, client } from "~/lib/dbClient";
const searchParams = Astro.url.searchParams;
const dateRange = searchParams.get("date-range") ?? "all-time";
const page = searchParams.get("page") ? Number(searchParams.get("page")) : 1;
let dateGreaterThan: Date | undefined;
const dateLessThan = new Date(Date.now());
switch (dateRange) {
case "past-day":
dateGreaterThan = new Date(Date.now() - 24 * 60 * 60 * 1000);
break;
case "past-week":
dateGreaterThan = new Date(Date.now() - 7 * 24 * 60 * 60 * 1000);
break;
case "past-month":
dateGreaterThan = new Date(Date.now() - 30 * 24 * 60 * 60 * 1000);
break;
case "past-year":
dateGreaterThan = new Date(Date.now() - 365 * 24 * 60 * 60 * 1000);
break;
default:
break;
}
const pageSize = 10;
const offset = (page - 1) * pageSize;
const search = searchParams.get("search") ?? "";
const start = performance.now();
const conditions = [];
if (dateGreaterThan) {
conditions.push(gte(PageViewsTable.date, dateGreaterThan));
conditions.push(lte(PageViewsTable.date, dateLessThan));
}
if (search !== "") {
conditions.push(like(PageViewsTable.url, `%${search}%`));
}
const totalViewsQuery = client
.select({
totalUniqueURLs: countDistinct(PageViewsTable.url),
totalCount: count(),
})
.from(PageViewsTable)
.where(and(...conditions));
const viewsQuery = client
.select({
url: PageViewsTable.url,
pageviews: count(),
})
.from(PageViewsTable)
.where(and(...conditions))
.limit(pageSize)
.offset(offset)
.groupBy(PageViewsTable.url)
.orderBy(desc(count()));
```
The `totalViewsQuery` is used to get the total amount of views and unique URLs, and the `viewsQuery` is used to get the data for the bar chart.
The total views are used to provide the pagination at the bottom of the page.
I left out the code for the search input and dropdown, but it's pretty straightforward and can be found on GitHub if you're interested (see links at bottom of the article).
The bar chart is created using `recharts` and the code looks like this:
```tsx
import {
Bar,
BarChart,
LabelList,
ResponsiveContainer,
Tooltip,
XAxis,
YAxis,
} from "recharts";
type ViewChartProps = {
data: {
url: string;
pageviews: number;
}[];
};
const ViewChart = ({ data }: ViewChartProps) => {
return (
<ResponsiveContainer
className="-ml-16"
width="100%"
height={data.length * 50}
>
<BarChart layout="vertical" data={data}>
<YAxis
type="category"
dataKey="url"
stroke="#888888"
fontSize={12}
tickLine={false}
axisLine={false}
tick={false}
/>
<XAxis type="number" hide />
<Tooltip
wrapperStyle={{ maxWidth: "300px" }}
// @ts-expect-error
labelStyle={{ textWrap: "balance" }}
/>
<Bar
label={false}
dataKey="pageviews"
fill="#2c6e49"
radius={[4, 4, 0, 0]}
>
<LabelList
dataKey="url"
position="insideLeft"
style={{ fill: "#000" }}
/>
</Bar>
</BarChart>
</ResponsiveContainer>
);
};
export default ViewChart;
```
## Conclusion
Now I own my own analytics data, I can choose how the visualize it myself, what to track and what not to track.
Of course I'm not storing IP addresses or any other personal data, so I'm not violating any privacy laws.
I'm also not tracking any data that I don't need, so I'm not wasting any resources.
The only downside I encountered so far with the Vercel Postgres database, is the cold starts.
Since the database is serverless, it needs to start up when it's not used for a while, so the first request after a while takes a bit longer (up to 1.5 seconds).
I'm pretty happy with the result, and I hope you learned something from this post!
This gave me the opportunity to learn more about SQL and Drizzle, which is another thing I can check off my list.
There's still room for improvement on the UI side, and the tracking data could also be improved by tracking things like the referrer etc.
Full code can be found on [GitHub](https://github.com/thomasledoux1/website-thomas-astro), live data can be seen on [my website](https://thomasledoux.be/page-views).
| thomasledoux1 |
1,732,651 | 🔮 Front-End Foresight - 7 Emerging Trends for 2024 Devs | Hey everyone ✌️ Here's a quick look at this week's newsletter: 🖌️ Elevate Your UI Game - 58 Rules to... | 0 | 2024-01-18T15:08:00 | https://dev.to/adam/front-end-foresight-7-emerging-trends-for-2024-devs-56fk | css, frontend, ux, ui |
**Hey everyone** ✌️ Here's a quick look at this week's newsletter:
🖌️ Elevate Your UI Game - 58 Rules to Craft Designs
🔧 Next-Level NextJS - 28 Advanced Features
🎨 The Ultimate Guide to Writing CSS in 2024
Enjoy this week's edition 👋 - Adam at Unicorn Club.
---
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### 🧑💻 Dev
[**28 Advanced NextJS features everyone should know**](https://codedrivendevelopment.com/posts/rarely-known-nextjs-features?utm_source=unicornclub.dev&utm_medium=newsletter&utm_campaign=unicornclub.dev&ref=unicornclub.dev)
This is a guide about some lesser-known features of NextJS. I've included things in this article that I have not seen in NextJS applications that I've worked on.
[**How I'm Writing CSS in 2024**](https://leerob.io/blog/css)
This post will be a collection of my notes and thoughts about the CSS ecosystem and the tools I'm currently using.
[**7 front-end web development trends for 2024**](https://www.frontendmentor.io/articles/7-frontend-web-development-trends-for-2024-qtBD0H0hY3?utm_source=unicornclub.dev&utm_medium=newsletter&utm_campaign=unicornclub.dev&ref=unicornclub.dev)
While mastering every new tool isn't necessary, knowing 2024's trends, as outlined in this article, can help keep your skills fresh and know what's coming.
[**Let’s make the indie web easier**](https://gilest.org/indie-easy.html?utm_source=unicornclub.dev&utm_medium=newsletter&utm_campaign=unicornclub.dev&ref=unicornclub.dev)
We need more self-hosted platforms for personal publishing that aren’t Wordpress. And don’t point me to Hugo or Netlify or Eleventy or all those things - all of them are great, but none of them are simple enough.
[**Top Front-End Tools Of 2023**](https://www.smashingmagazine.com/2024/01/top-frontend-tools-2023/?utm_source=unicornclub.dev&utm_medium=newsletter&utm_campaign=unicornclub.dev&ref=unicornclub.dev)
Who doesn’t love a good front-end tool? In this roundup, you’ll find useful front-end tools that were popular last year and will help you speed up your development workflow.
### 🎨 Design
[**iOS Icon Gallery**](https://www.iosicongallery.com/?utm_source=unicornclub.dev&utm_medium=newsletter&utm_campaign=unicornclub.dev&ref=unicornclub.dev)
Showcasing beautiful icon designs from the iOS App Store.
[**58 rules for beautiful UI design**](https://uxdesign.cc/58-rules-for-stunning-and-effective-user-interface-design-ea4b93f931f6?utm_source=unicornclub.dev&utm_medium=newsletter&utm_campaign=unicornclub.dev&ref=unicornclub.dev)
The right UI can elevate an application from functional to unforgettable, making the difference between a user who engages once and one who returns time and again.
[**A Global Design System**](https://bradfrost.com/blog/post/a-global-design-system/?utm_source=unicornclub.dev&utm_medium=newsletter&utm_campaign=unicornclub.dev&ref=unicornclub.dev)
This is a call to action to create a Global Design System that provides the world’s web designers & developers a library of common UI components.
### 🔥 Promoted Links
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_Thanks for reading ❤️
[@AdamMarsdenUK](https://twitter.com/AdamMarsdenUK) from Unicorn Club_ | adam |
1,732,686 | The Impact of Decking Mats on Temperature Regulation in Outdoor Spaces | Introduction: Outdoor living spaces have become an integral part of modern homes, providing a... | 0 | 2024-01-17T14:25:54 | https://dev.to/atta123/the-impact-of-decking-mats-on-temperature-regulation-in-outdoor-spaces-3i7h |
**Introduction:**
Outdoor living spaces have become an integral part of modern homes, providing a sanctuary for relaxation and socializing. One often overlooked element in optimizing these spaces is the use of decking mats. Beyond their aesthetic appeal and slip-resistant properties, [decking mats](https://trustedmats.co.uk/decking-mats/) play a crucial role in temperature regulation. In this blog post, we will explore the various ways in which decking mats can influence and enhance the temperature dynamics of your outdoor area.
**Insulating Properties of Decking Mats:**
Decking mats, particularly those made from materials like rubber and PVC, possess excellent insulating properties. They act as a barrier between the cold or hot ground and the surface of the deck, providing a more comfortable area to walk or sit.
**Reducing Heat Absorption:**
Certain decking mats are designed to reflect sunlight, preventing excessive heat absorption. This is especially beneficial in warmer climates where traditional decking materials can become uncomfortably hot. Explore how reflective coatings and innovative materials contribute to a cooler deck surface.
**Thermal Mass and Temperature Stability:**
Some decking mats incorporate thermal mass properties, helping to stabilize temperatures throughout the day. This section delves into how certain materials store and release heat, creating a more consistent and comfortable outdoor environment.
**Seasonal Considerations:**
Discuss the impact of decking mats during different seasons. For example, how they can provide insulation during colder months and reflect heat in the summer, making your outdoor space more usable year-round.
**Energy Efficiency in Outdoor Spaces:**
Explore the broader implications of temperature regulation on energy efficiency. Learn how a well-regulated outdoor space can positively influence the indoor temperature and reduce the need for excessive heating or cooling.
**Case Studies and Real-Life Examples:**
Provide case studies or real-life examples of individuals or businesses that have experienced tangible benefits from using decking mats for temperature regulation. Include testimonials, if available, to add a practical dimension to the discussion.
**Choosing the Right Decking Mats for Temperature Control:**
Guide readers on selecting the right type of decking mats for their specific climate and needs. Discuss the importance of material choice, color, and design in optimizing temperature regulation.
**DIY Tips for Improving Temperature Control:**
Offer practical do-it-yourself tips for enhancing the temperature-regulating properties of decking mats. This could include suggestions for additional shading, strategic placement of mats, or incorporating other elements like plants for natural cooling.
**Conclusion**:
In conclusion, decking mats are not just a stylish addition to your outdoor space; they are essential contributors to temperature regulation. By understanding their insulating properties, reflective capabilities, and impact on thermal mass, you can create a more comfortable and enjoyable outdoor environment. Whether you're in a hot desert climate or a chilly northern region, the right choice of decking mats can transform your outdoor space into a haven of comfort throughout the year.
And when it comes to finding the ideal decking mats that seamlessly blend functionality with aesthetics, trustedmats.co.uk stands out as a leading provider. Renowned for their commitment to quality and innovation, **[trustedmats.co.uk ](https://trustedmats.co.uk/)**offers a diverse range of decking mats designed to cater to various needs and preferences. Their dedication to using top-notch materials and employing cutting-edge technology has solidified their reputation as a trusted source in the decking mat industry.
As you explore decking mats for temperature regulation, considering the offerings from trustedmats.co.uk can provide you with the assurance of reliability and performance. From insulating properties to reflective coatings, their selection is meticulously crafted to optimize your outdoor space for comfort in every season.
Make the smart choice by investing in high-quality decking mats from a reputable seller like trustedmats.co.uk. This decision is not just about enhancing your outdoor aesthetics; it's about creating a space that is durable, functional, and consistently exceeds your expectations. Elevate your outdoor living experience with trustedmats.co.uk and enjoy the perfect blend of style and comfort throughout the year. | atta123 | |
1,732,715 | Flutter | Dart - Not able to launch windows app on double Tap | I created a release build for windows platform but when I double tap on .exe then application is not... | 0 | 2024-01-17T15:07:06 | https://dev.to/yogesharora339/flutter-dart-not-able-to-launch-windows-app-on-double-tap-1dnh | I created a release build for windows platform but when I double tap on .exe then application is not getting launch.
I am able to launch when I run using flutter command or visual studio.
I want to launch flutter windows release or debug app using double tap. | yogesharora339 | |
1,732,885 | Unleashing Nextcloud: Host Your Own Cloud Like a Pro with Our Step-by-Step Tutorial! | User instructions on how to set Nextcloud on your own Linux server, It will take some time to set it... | 0 | 2024-01-17T17:43:09 | https://dev.to/valterseu/unleashing-nextcloud-host-your-own-cloud-like-a-pro-with-our-step-by-step-tutorial-4519 | cloud, devops, developers, 100daysofcode | User instructions on how to set Nextcloud on your own Linux server, It will take some time to set it up if you have a fresh Linux Dedicated server or VPS, but I will make that easy for you with a single Bash Script, that you will find in the setup guide it will point to my GitHub. Also, we will look into, how to set up Nextcloud using Docker It will be fast so we will start with that and then move to server VPS installation, but keep in mind as my Docker is using an Nginx reverse proxy, then it has some speed limitations of large files, if for some example you decide to also use Cloudflare to hide server location, etc. It will also limit the large file uploads as the free Cloudflare plan not only reduces the speed of file uploads but also limits how large files can travel through their servers. If you don’t like to read, but like to listen, then feel free to watch my YouTube setup guide and all the information:
Full article: https://www.valters.eu/unleashing-nextcloud-the-ultimate-docker-guide-to-total-cloud-freedom-host-your-own-cloud-like-a-pro-with-our-step-by-step-tutorial/
Follow for more:
Twitter: [https://twitter.com/valters_eu](https://twitter.com/valters_eu)
YouTube: [https://youtube.com/@valters_eu](https://youtube.com/@valters_eu)
{% embed https://www.youtube.com/watch?v=IhTBrK8wWRE %}
Thanks for your support | valterseu |
1,733,049 | Future of [Civil Engineering | Sustainable Infrastructure: The Future of Civil Engineering | 0 | 2024-01-17T20:09:20 | https://dev.to/sayanrb/future-of-civil-engineering-3nae | discuss | Sustainable Infrastructure: The Future of [Civil Engineering](https://wheon.com/sustainable-infrastructure-the-future-of-civil-engineering/)
| sayanrb |
1,738,756 | Activgenix CBD Gummies-(Updates 2024) Scam or Natural Ingredients, Fight Pain & Stress! | Introduction: In the fast-paced world we live in, the prevalence of anxiety and joint pain is on the... | 0 | 2024-01-23T09:39:47 | https://dev.to/activgenixcbdbuy/activgenix-cbd-gummies-updates-2024-scam-or-natural-ingredients-fight-pain-stress-1552 | webdev, javascript, beginners, programming | **Introduction:**
In the fast-paced world we live in, the prevalence of anxiety and joint pain is on the rise, impacting the daily lives of millions. Traditional approaches often involve pharmaceuticals with potential side effects. However, the natural synergy of Activgenix CBD Gummies presents an intriguing solution. This article explores the unique qualities of Activgenix CBD Gummies and how they offer a dual benefit – addressing anxiety attacks and providing relief for joint pain.
**Understanding Anxiety and Joint Pain:
Anxiety Attacks:**
Anxiety is a complex mental health condition characterized by excessive worry, fear, and heightened stress levels. Anxiety attacks, also known as panic attacks, can be intense and debilitating, affecting both mental and physical well-being. Individuals experiencing anxiety attacks may seek natural alternatives to complement or replace traditional treatments.
**Joint Pain:**
Joint pain is a widespread issue that can result from various conditions, including arthritis, inflammation, or injuries. Chronic joint pain can significantly impact mobility, leading to a decreased quality of life. Many individuals are exploring natural solutions to manage joint pain without the side effects associated with traditional medications.
See More Info: https://www.mid-day.com/lifestyle/infotainment/article/actogenix-cbd-gummies-reviews-warning-updated-2024-activgenix-cbd-gummies-must-23331358
Official site: https://www.mid-day.com/lifestyle/infotainment/article/activgenix-cbd-gummies-reviews-2024-hidden-secret-revealed-benefits-and-side--23330265
Pinterest: https://www.pinterest.com/activgenixcbd/activgenix-cbd-gummies/
Tumblr: https://www.tumblr.com/activgenixcbdgummies
Twitter: https://twitter.com/activgenix
| activgenixcbdbuy |
70,668 | Javascript Closures | A closure is an inner function that has access to the outer (enclosing) function’s variables—scope ch... | 0 | 2018-12-24T06:21:24 | https://dev.to/10secondsofcode/javascript-closures-375d | javascript, 10secondsofcode, closures | ---
title: Javascript Closures
published: True
tags: #javascript, #10secondsofcode, #closures
description:
---
A **closure** is an inner function that has access to the outer (enclosing) function’s variables—scope chain. The closure has three scope chains:
- it has access to its own scope (variables defined between its curly brackets).
- it has access to the outer function’s variables.
- it has access to the global variables.
Closure means that an inner function always has access to the vars and parameters of its outer function, even after the outer function has returned.
Inner function can access variables and parameters of an outer function.
It is useful in hiding implementation detail in JavaScript.
```
function showName (firstName, lastName) {
var nameIntro = "Your name is ";
// this inner function has access to the outer function's variables, including the parameter
function makeFullName () {
return nameIntro + firstName + " " + lastName;
}
return makeFullName ();
}
showName ("Michael", "Jackson"); // Your name is Michael Jackson
```
```
function OuterFunction() {
var outerVariable = 100;
function InnerFunction() {
alert(outerVariable);
}
return InnerFunction;
}
var innerFunc = OuterFunction();
innerFunc(); // 100
function Counter() {
var counter = 0;
function IncreaseCounter() {
return counter += 1;
};
return IncreaseCounter;
}
var counter = Counter();
alert(counter()); // 1
alert(counter()); // 2
alert(counter()); // 3
alert(counter()); // 4
```
In the above example, return InnerFunction; returns InnerFunction from OuterFunction when you call OuterFunction(). A variable innerFunc reference the InnerFunction() only, not the OuterFunction(). So now, when you call innerFunc(), it can still access outerVariable which is declared in OuterFunction(). This is called Closure.
**Repo:** [https://github.com/10secondsofcode/10secondsofcode](https://10secondsofcode.github.io/10secondsofcode/)
#javascript, #10secondsofcode, #closures | 10secondsofcode |
1,745,805 | CryptoBriefing Analytics: SUI hits new monthly high, TVL surges 98% in one month | Sui’s token price has broken a new monthly high, reaching $1.65 earlier today, according to data from... | 0 | 2024-01-30T16:24:28 | https://dev.to/victordelpino/cryptobriefing-analytics-sui-hits-new-monthly-high-tvl-surges-98-in-one-month-4ll2 | crypto, blockchain, cryptocurrency, analytics | Sui’s token price has broken a new monthly high, reaching $1.65 earlier today, according to data from CoinGecko. At press time, SUI is trading around $1.6, up 15% in the past 24 hours. The total value locked (TVL) on Sui surged 98% month-to-date, increasing from around $208 million to $436 million, according to data from DeFiLlama.
With this surge, Sui has surpassed Coinbase’s Base and Cardano in TVL, with Base experiencing a 9.5% downturn to around $397 million, and Cardano witnessing a nearly 15% decline to $340 million over the last month. This surge is attributed to the growth of the Sui ecosystem, fueled by recent strategic partnerships with prominent entities like Alibaba Cloud and Solend.
Mysten Labs, the team behind Sui, recently announced its partnership with Alibaba Cloud to provide more resources for developers using the Move programming language. Additionally, Solend, a lending and borrowing platform on Solana,announced last month its expansion onto the Sui network.
In addition to these collaborations, the Sui Foundation motivates projects to participate in the Sui ecosystem with infrastructure-friendly tokenomics that use SUI tokens to incentivize projects and users within the Sui network.
Sui’s market cap reached approximately $1.5 billion, up over 80% in the past month, according to Token Terminal’s statistics.
 | victordelpino |
1,748,170 | Python vs JavaScript — A Brief Overview | When we talk about today’s world, there are lots of programming languages. I’m sure no one knows the... | 0 | 2024-02-01T08:31:00 | https://dev.to/shariqahmed525/python-vs-javascript-a-brief-overview-4bfl | programming, languages, python, javascript | When we talk about today’s world, there are lots of programming languages. I’m sure no one knows the exact count of these languages — naming every language is a big thing. But that wasn’t the case before. I’m talking about the time when AI was born but wasn’t much evolved — the ‘90s.
In the world of programming languages, there are a few languages that most people prefer learning: Python and JavaScript. Before moving on and explaining the difference, let me explain both of these languages in a few sentences.
Okay, so Python was created by Guido van Rossum in 1991. It is a high-level and general-purpose language. It was first used to make websites and software. Later on, developers started using it to automate tasks and analyze data. JavaScript, on the other hand, was made by Brendan Eich. He developed and released this language in 1995 for Netscape 2.
Now, let’s move on and see the difference between JavaScript and Python. I’m not going into detail but just mentioning basic differences between both languages.
1. So, when it comes to making hash tables, Python allows you to make hash tables using dictionaries. Unfortunately, JavaScript doesn’t allow you to create hash tables.
2. In Python, you can define attributes with the help of a descriptor, while in JavaScript, objects support attributes.
3. Code blocks are defined through indentation in Python, while in JavaScript, you have to use {} to define code blocks.
4. The encoding format in Python is ASCII, whereas UTF-16 is the encoding format in JavaScript.
5. JavaScript has defined parameters, but in Python, if you call a function with the wrong parentheses, you will get an error.
6. Python has built-in REPL, while in JavaScript, you can get a REPL using Node JS or some other browsers.
7. Further, when we talk about speed and performance, Python excels in both fields, but only when we talk about CPU-intensive tasks. Python is fast when it comes to making applications that needs processing.
8. But what about popularity? Well, despite all the benefits of Python, JavaScript is more popular than Python.
9. Apps made in Python aren’t that scalable. JavaScript is the best to use to make scalable apps.
10. Python is really easy to learn. JavaScript, on the other hand, isn’t that easy. It’s also hard to learn and filled with complex classes.
11. Python is an OOP language because it uses a class-based inheritance structure. JavaScript, on the other hand, undoubtedly has classes but relies on a software prototype-based model to support inheritance.
12. There are dozens of ready-to-use modules and libraries in Python. JavaScript doesn’t have as many built-in modules.
13. JavaScript has only floating-type variables, while Python has variables of varying data types.
14. When it comes to implicit conversion, Python is strongly-typed, but JavaScript pales in comparison. JavaScript is weakly-typed.
15. To run any Python code, you need an interpreter. That’s not the case in JavaScript; the ability to run codes is built into web browsers.
16. Python is used for server-side scripting, while JavaScript is used for client-side scripting.
**What Should You Learn First: Python or JavaScript?**
If you haven’t learned any language, then go for Python. It’s a beginner-friendly language. You won’t have difficulty learning it. But if you are already well-informed with Python, then go ahead and take the leap: learn JavaScript. | shariqahmed525 |
1,750,871 | What anomaly and bug detections would you like to see automated? | I am working on a debugging tool for neural networks (https://github.com/FlorianDietz/comgra)).... | 0 | 2024-02-03T20:20:51 | https://dev.to/floriandietz/what-anomaly-and-bug-detections-would-you-like-to-see-automated-3l5o | python, ai, machinelearning | I am working on a debugging tool for neural networks (https://github.com/FlorianDietz/comgra)). Currently it is useful for visualizations and in-depth manual analysis, something that is lacking in tensorboard and other tools.
I want to extend it to automate a lot of the common analyses and anomaly detections in order to save the developer time.
I am looking for suggestions on what would be the most useful for you.
How it would work:
You run a number of trials on similar networks with similar tasks, with different hyperparameters. The tool logs all relevant data and automatically detects anomalies such as "vanishing gradients" or "the loss has unusually high variance" or "the classification is imbalanced and works poorly on targets of type X".
In a second step, it performs a correlation analysis between the hyperparameters of each trial and the anomalies detected in those trials. It then generates a list of warnings for each statistically significant finding. For example:
"30% of trials with learning rate above 3e-4 had vanishing gradients, versus 0% of trials with learning rate below 3e-4."
"50% of trials with architectural variant X had unusually high variance in the loss, versus 10% of trials with other architectural variants."
Having a large list of warnings like these generated automatically would allow you to identify bugs very quickly. Additionally, if no warnings are generated then you can be much more confident in the stability of your model.
Of course, many warnings would also be false positives that aren't worth investigating, but I imagine it's better to be warned for no reason than to miss a problem that actually matters.
What do you think of the idea?
What types of anomalies do you think would make the most sense to look for? | floriandietz |
1,750,916 | Cash Box Loan Customer Care Number 7359064124 | Cash Box Loan Customer Care Number 7359064124 Cash Box Loan Customer Care Number 7359064124 | 0 | 2024-02-03T22:34:58 | https://dev.to/babuji/cash-box-loan-customer-care-number-7359064124-3nna | javascript, beginners | Cash Box Loan Customer Care Number 7359064124
Cash Box Loan Customer Care Number 7359064124
| babuji |
1,750,999 | EXPERIENCE LOST BITCOIN RECOVERY EXPERT - WIZARD WEB RECOVERY | A reputable tech team specializing in digital investigations can assist in uncovering evidence of... | 0 | 2024-02-04T02:02:33 | https://dev.to/elizabethharris6547/experience-lost-bitcoin-recovery-expert-wizard-web-recovery-44jd | A reputable tech team specializing in digital investigations can assist in uncovering evidence of infidelity. They have the expertise and tools to track digital footprints, analyze online communication, and identify signs of suspicious activities. With their assistance, you can gain valuable insights into your partner's behavior and potential infidelity. When it comes to relationship concerns, seeking assistance from a reputable tech team can make all the difference. They have the expertise, resources, and experience to help you uncover the truth and make informed decisions about your situation. Choosing a team with a solid reputation and proven track record is crucial for a successful outcome. When you decide to engage the services of Wizard Web Recovery, the first step is an initial consultation. During this consultation, the team will assess your case and gather information about your suspicions. This will help them understand your needs and develop an investigative approach tailored to your specific situation. Open and honest communication is essential during this stage, so be prepared to provide any relevant details. A reputable tech team like Wizard Web Recovery understands the importance of gathering evidence legally and ethically. They will employ reliable methods and cutting-edge technology to uncover the truth while adhering to all applicable laws and regulations. They will keep you informed throughout the investigation process and ensure that the evidence they gather can be used properly if needed. In my case study, Wizard Web Recovery assisted a client in uncovering hidden online communication between their partner and a suspected third party. By analyzing email accounts, social media profiles, and messaging apps, the team was able to provide concrete evidence of the infidelity. This evidence played a crucial role in the client's decision-making process and helped them confront their partner. By providing individuals with the necessary tools and knowledge, teams like Wizard Web Recovery empower them to take action in their relationships. Whether it's confirming suspicions or addressing concerns, having the evidence and information needed can bring clarity and facilitate necessary conversations. Remember, seeking assistance is not a sign of weakness but a way to take control of your happiness and well-being. In conclusion, it's critical to rely on a reliable tech team to help unearth proof when suspicions of adultery surface. Wizard Web Recovery is a reputable and knowledgeable group that uses state-of-the-art equipment to carry out exhaustive examinations. When choosing to seek help for relationship issues, people can make an informed selection by taking into account important variables including reputation, experience, and customer testimonies. Talk to a representative through email: wizardwebrecovery@ programmer. net or visit (wizardwebrecovery.net) to learn more about the services they offer. | elizabethharris6547 | |
1,751,036 | Turat Fund Loan CUSTOMER CARE HELPLINE NUMBER/+7620648328 | Turat Fund Loan CUSTOMER CARE HELPLINE NUMBER/+7620648328))//8235639628//तुराट फंड×call... | 0 | 2024-02-04T05:07:45 | https://dev.to/customer009/turat-fund-loan-customer-care-helpline-number7620648328-4n2l | beginners, devops, programming | Turat Fund Loan CUSTOMER CARE HELPLINE NUMBER/+7620648328))//8235639628//तुराट फंड×call now×7479837408× All online related just imagically contact | customer009 |
1,751,054 | Orchid Cash Loan Customer Care Helpline Number /+7620648328))//8235639628//call now All online related just | Orchid Cash Loan Customer Care Helpline Number /+7620648328))//8235639628//call now 7479837408× All... | 0 | 2024-02-04T05:33:30 | https://dev.to/customer009/orchid-cash-loan-customer-care-helpline-number-76206483288235639628call-now-all-online-related-just-14g6 | beginners, devops, opensource, discuss | Orchid Cash Loan Customer Care Helpline Number /+7620648328))//8235639628//call now 7479837408× All online related just imagically contact | customer009 |
1,751,060 | Cash Assist Loan Customer Care Helpline Number /+7620648328))//8235639628//call now contact | Cash Assist Loan Customer Care Helpline Number /+7620648328))//8235639628//call now 7479837408× All... | 0 | 2024-02-04T05:43:39 | https://dev.to/customer009/cash-assist-loan-customer-care-helpline-number-76206483288235639628call-now-contact-3m9c | javascript, webdev, devops, opensource | Cash Assist Loan Customer Care Helpline Number /+7620648328))//8235639628//call now 7479837408× All online | customer009 |
1,751,065 | Nahaa Money Loan Customer Care Helpline Number /+7620648328))//8235639628//call now | Nahaa Money Loan Customer Care Helpline Number /+7620648328))//8235639628//call now 7479837408 All... | 0 | 2024-02-04T05:54:32 | https://dev.to/customer009/nahaa-money-loan-customer-care-helpline-number-76206483288235639628call-now-4cdh | beginners, devops, discuss, api | Nahaa Money Loan Customer Care Helpline Number /+7620648328))//8235639628//call now 7479837408 All online related just imagically contact | customer009 |
1,751,070 | Mysterious space beneath images | Images are everywhere on the web. In today’s world, no website is complete without using images. When... | 0 | 2024-02-04T06:02:44 | https://www.linkedin.com/pulse/mysterious-space-beneath-images-junaid-shaikh-wiinf/ | frontend, css, html | Images are everywhere on the web. In today’s world, no website is complete without using images. When using an img tag in HTML to render images, have you ever noticed a mysterious space beneath the image?
Take the example above, we have an image with a width of 500px and height of 350px wrapped inside the div with a border. Notice that the height of the div in the box model is 354px which is a little bit bigger than the height of the image. Take a closer look.
Where is this space coming from? and how do we solve this?
Here is a deal. `img` is an inline element and the browser treats it as typography and adds this space so that it doesn’t place those elements too tight. This makes sense with texts though.
There are two ways we can solve this problem.
1. Change the display property of images to `display: block`
2. Setting the line height of the parent div to `0`
`line-height` CSS property is used to set the distance between two lines of text and we can leverage this to our advantage.
You can find the codepen here: https://codepen.io/Junaid-Shaikh-the-lessful/pen/BabxZoZ
I hope that was useful for you. Thank you for taking the time to read this. You can find me on [Twitter](https://twitter.com/junaidshaikh_js) and [Linkedin](https://www.linkedin.com/in/junaidshaikhjs/)
Cover pic by [Natalia Trofimova](https://unsplash.com/@trofimova_photographer?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash) on [Unsplash](https://unsplash.com/photos/a-river-running-through-a-city-next-to-tall-buildings-u8uq_1SLIM4?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash) | junaidshaikhjs |
1,751,122 | Implementation of a Prototype Kubernetes-Based Cluster for Scalable Web-Based WordPress Deployment using K3s on Raspberry Pis | Welcome to an exhilarating journey where we unlock the secrets of building a scalable infrastructure... | 0 | 2024-02-04T09:19:54 | https://dev.to/otumba/implementation-of-a-prototype-kubernetes-based-cluster-for-scalable-web-based-wordpress-deployment-using-k3s-on-raspberry-pis-1goe | devops, kubernetes, k3s | Welcome to an exhilarating journey where we unlock the secrets of building a scalable infrastructure using Kubernetes. In this comprehensive guide, we'll navigate the nuances of setting up a robust cluster to host a WordPress site. Buckle up as we explore the implementation process using five Raspberry Pis, a router, and a switch, with the lightweight K3s as our chosen Kubernetes distribution.
## Setting the Stage: Objectives
Our primary goal is crystal clear – to create a powerhouse infrastructure that effortlessly scales to host a WordPress site. This guide will walk you through every twist and turn, from the initial Raspberry Pi setup to deploying and scaling your WordPress application.
Before diving into the implementation, ensure you have the following:
1. Hardware:
- Five Raspberry Pis(You can follow along with one Raspberry PI A similar setup can be found in this [youtube video](https://youtu.be/X9fSMGkjtug?si=uO4kdF_pWGnpcUSu))
- Router and Switch
- SD Cards for Raspberry Pis
- Ethernet Cables
- Power Supply for Raspberry Pis
- External Drive (for storing disk images)
2. Software:
- Win32 Disk Imager (for disk imaging)
- K3s binary for ARM architecture (compatible with Raspberry Pi)
- Raspberry Pi OS Lite 64-bit
3. Knowledge:
- Basic understanding of Linux environments
- Basic understanding of Kubernetes with essential commands
- Fundamental networking knowledge
## Table of Contents
1. [Setting Up Raspberry Pis](#1-setting-up-raspberry-pis)
- 1.1 [Hardware Preparation](#11-hardware-preparation)
- 1.2 [Operating System Installation](#12-operating-system-installation)
- 1.3 [Configuring Network Settings](#13-configuring-network-settings)
- 1.4 [Enabling SSH Access](#14-enabling-ssh-access)
2. [Configuring the Master Node](#2-configuring-the-master-node)
- 2.1 [Installing K3s on the Master Node](#21-installing-k3s-on-the-master-node)
- 2.2 [Verifying K3s Installation](#22-verifying-k3s-installation)
- 2.3 [Configuring Master Node Components](#23-configuring-master-node-components)
3. [Setting Up Worker Nodes](#3-setting-up-worker-nodes)
- 3.1 [Installing K3s on Worker Nodes](#31-installing-k3s-on-worker-nodes)
- 3.2 [Joining Worker Nodes to the Cluster](#32-joining-worker-nodes-to-the-cluster)
- 3.3 [Verifying Worker Node Status](#33-verifying-worker-node-status)
4. [Network Configuration](#4-network-configuration)
- 4.1 [Configuring Raspberry Pi Networking](#41-configuring-raspberry-pi-networking)
- 4.2 [Ensuring Network Connectivity](#42-ensuring-network-connectivity)
- 4.3 [Troubleshooting Network Issues](#43-troubleshooting-network-issues)
5. [Persistent Volume Implementation](#5-persistent-volume-implementation)
- 5.1 [Creating Persistent Volumes](#51-creating-persistent-volumes)
- 5.2 [Configuring Persistent Volume Claims](#52-configuring-persistent-volume-claims)
- 5.3 [Testing Persistent Volumes](#53-testing-persistent-volumes)
6. [Deploying WordPress on Kubernetes](#6-deploying-wordpress-on-kubernetes)
- 6.1 [Creating WordPress Deployment YAML](#61-creating-wordpress-deployment-yaml)
- 6.2 [Configuring Service for WordPress](#62-configuring-service-for-wordpress)
- 6.3 [Verifying WordPress Deployment](#63-verifying-wordpress-deployment)
7. [Scaling the WordPress Deployment](#7-scaling-the-wordpress-deployment)
- 7.1 [Horizontal Pod Autoscaling](#71-horizontal-pod-autoscaling)
- 7.2 [Testing Autoscaling](#72-testing-autoscaling)
- 7.3 [Analyzing Scalability](#73-analyzing-scalability)
8. [Monitoring and Observability](#8-monitoring-and-observability)
- 8.1 [Implementing Prometheus for Monitoring](#81-implementing-prometheus-for-monitoring)
- 8.2 [Grafana Dashboard Configuration](#82-grafana-dashboard-configuration)
- 8.3 [Observing Cluster Metrics](#83-observing-cluster-metrics)
## 1. Setting Up Raspberry Pis
### 1.1 Hardware Preparation
Before we dive into the technical details, let's ensure that we have everything ready. Power up your Raspberry Pis and ensure they are properly connected to the network.
### 1.2 Operating System Installation
The first step is to get the Raspberry Pi OS up and running. To do this, follow these steps:
1. Download the [Raspberry Pi Imager](https://www.raspberrypi.org/software/) and install it on your computer.
2. Insert the SD card into your computer using an SD card reader.
3. Open the Raspberry Pi Imager and choose the Raspberry Pi OS Lite 64-bit version.
4. Select the inserted SD card as the storage location.
5. Click on "Write" to start the installation process.
Once the process is complete, eject the SD card safely and insert it into the Raspberry Pi.
### 1.3 Configuring Raspberry Pi Networking
Now, let's configure the network settings on each Raspberry Pi:
1. **Boot up the Raspberry Pi:**
- Connect a monitor, keyboard, and mouse to the Raspberry Pi.
- Power it up and follow the on-screen instructions to set up the Raspberry Pi OS.
2. **Open the Terminal:**
- Once the Raspberry Pi OS is booted, open the terminal.
3. **Configure Network Settings:**
- Use the following command to edit the network configuration file:
```bash
sudo nano /etc/network/interfaces
```
- Update the file with your desired network settings. For example:
```bash
auto eth0
iface eth0 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
```
4. **Save and Exit:**
- Save the changes by pressing `Ctrl + X`, then `Y` to confirm, and finally `Enter` to exit.
5. **Restart the Network:**
- Restart the network interface to apply the changes:
```bash
sudo systemctl restart networking
```
### 1.4 Enabling SSH Access
Enabling SSH on each Raspberry Pi is essential for remote access. Here's how you can do it:
1. **Open the Raspberry Pi Configuration:**
- Run the following command:
```bash
sudo raspi-config
```
- Navigate to `Interfacing Options` and enable `SSH`.
2. **Restart the Raspberry Pi:**
- After enabling SSH, restart the Raspberry Pi to apply the changes:
```bash
sudo reboot
```
With these steps completed, you've successfully set up the Raspberry Pis for further configuration.
## 2. Configuring the Master Node
### 2.1 Installing K3s on the Master Node
Now, let's move on to configuring the master node. Follow these steps:
1. **Log into the Master Pi:**
- Open a terminal or use SSH to log into the master Raspberry Pi.
2. **Download and Install K3s:**
- Use the following command to download and install K3s:
```bash
curl -sfL https://get.k3s.io | sh -
```
3. **Verify K3s Installation:**
- Once the installation is
complete, verify that K3s is running:
```bash
sudo k3s kubectl get nodes
```
During installation, I got this error
Kubernetes requires “cgroup_memory=1 cgroup_enabled=memory” added to the cmdline.txt file of my pi’s for the installation to work. As this is missing the installation initially failed.
After adding this, I was able to install Kubernetes on the master node

### 2.2 Configuring Master Node Components
With K3s installed, configure the master node components:
1. **Export Kubeconfig:**
- Export the Kubeconfig file to enable kubectl commands:
```bash
export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
```
2. **Check Nodes:**
- Ensure that the master node is ready:
```bash
sudo k3s kubectl get nodes
```
3. **Install Helm:**
- Helm is a package manager for Kubernetes. Install Helm using:
```bash
sudo snap install helm --classic
```
- Initialize Helm:
```bash
helm init
```
- Verify the Helm installation:
```bash
helm version
```
With the master node configured, you're ready to proceed to the next stage.
## 3. Setting Up Worker Nodes
### 3.1 Installing K3s on Worker Nodes
Expand your cluster by setting up worker nodes. Here's how:
1. **Log into Each Worker Pi:**
- Use SSH to log into each worker Raspberry Pi.
2. **Download and Install K3s:**
- Similar to the master node, install K3s on each worker node:
```bash
curl -sfL https://get.k3s.io | K3S_URL=https://<master-node-ip>:6443 K3S_TOKEN=<node-token> sh -
```
- Replace `<master-node-ip>` with the IP of your master node and `<node-token>` with the token obtained from the master node:
```bash
sudo cat /var/lib/rancher/k3s/server/node-token
```
### 3.2 Joining Worker Nodes to the Cluster
After installing K3s on each worker node, join them to the cluster:
1. **Obtain Master Node Token:**
- On the master node, retrieve the token:
```bash
sudo cat /var/lib/rancher/k3s/server/node-token
```
2. **Join Worker to Cluster:**
- On each worker node, join the cluster using the token:
```bash
curl -sfL https://get.k3s.io | K3S_URL=https://<master-node-ip>:6443 K3S_TOKEN=<node-token> sh -
```
### 3.3 Verifying Worker Node Status
Check if the worker nodes have successfully joined the cluster:
1. **On the Master Node:**
- Run the following command to verify the status of worker nodes:
```bash
sudo k3s kubectl get nodes
```
- Ensure all nodes are in the 'Ready' state.
With the worker nodes in place, your Kubernetes cluster is shaping up. Now, let's delve into network configuration.
## 4. Network Configuration
### 4.1 Configuring Raspberry Pi Networking
A well-configured network is crucial for the seamless operation of your Kubernetes cluster. Follow these steps to ensure optimal network settings:
1. **Check Network Interfaces:**
- Verify the available network interfaces on each Raspberry Pi:
```bash
ip a
```
- Identify the primary network interface (e.g., eth0) for configuration.
2. **Edit Network Configuration File:**
- Open the network configuration file for editing:
```bash
sudo nano /etc/network/interfaces
```
3. **Configure Static IP Address:**
- Add the following lines to set a static IP address (adjust values based on your network):
```plaintext
auto eth0
iface eth0 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
```
- Save and exit the editor (press `Ctrl + X`, then `Y`, and `Enter`).
4. **Restart Networking:**
- Apply the changes by restarting the network service:
```bash
sudo systemctl restart networking
```
This can also be set up on your router. Irrespective of how you set the Static IPs this step is important as a change of IP while working can prevent the nodes from communicating with each other.
The screenshot below shows a change in the status of my pods with this being the cause.
Using this command helped me to see the cause of this issue
```bash
sudo kubectl describe pod <pod_name>
```
### 4.2 Ensuring Network Connectivity
Verify that each Raspberry Pi can communicate with others in the network:
1. **Ping Test:**
- From one Raspberry Pi, ping another using their static IP addresses:
```bash
ping 192.168.1.3
```
- Replace the IP address with the actual address of the target Raspberry Pi.
2. **SSH Connectivity:**
- Ensure SSH connectivity between Raspberry Pis:
```bash
ssh pi@192.168.1.3
```
- Use the IP address of the target Raspberry Pi.
### 4.3 Troubleshooting Network Issues
If you encounter network issues, consider the following troubleshooting steps:
1. **Check Configuration Files:**
- Review the network configuration files on each Raspberry Pi.
2. **Firewall Settings:**
- Ensure that firewalls on Raspberry Pis are not blocking necessary ports.
3. **Router Configuration:**
- Check router settings to ensure it allows communication between devices.
4. **Node Discovery:**
- Verify that each node can discover others in the cluster.
With a well-configured network, your Kubernetes cluster is ready to conquer the world. In the next section, we'll explore persistent volume implementation.
## 5. Persistent Volume Implementation
To ensure data persistence and availability, we'll set up persistent volumes (PVs) in our Kubernetes cluster.
### 5.1 Creating Persistent Volumes
On the master node, create persistent volumes for data storage:
1. **Create PV YAML File:**
- Create a YAML file (e.g., pv.yaml) with the PV configuration. Here's an example for a local storage PV:
```yaml
apiVersion: v1
kind: PersistentVolume
metadata:
name: pv-local
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/mnt/data"
```
2. **Apply the PV Configuration:**
- Apply the configuration to create the PV:
```bash
sudo k3s kubectl apply -f pv.yaml
```
### 5.2 Configuring Persistent Volume Claims
Now, let's configure persistent volume claims (PVCs) for your WordPress deployment:
1. **Create PVC YAML File:**
- Create a YAML file (e.g., pvc.yaml) with the PVC configuration. Here's an example:
```yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pvc-local
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
```
2. **Apply the PVC Configuration:**
- Apply the configuration to create the PVC:
```bash
sudo k3s kubectl apply -f pvc.yaml
```
### 5.3 Testing Persistent Volumes
Verify that persistent volumes are functioning as expected:
1. **Check PV Status:**
-
Verify the status of the persistent volume:
```bash
sudo k3s kubectl get pv
```
- Ensure that the PV is in the 'Bound' state.
2. **Check PVC Status:**
- Verify the status of the persistent volume claim:
```bash
sudo k3s kubectl get pvc
```
- Ensure that the PVC is in the 'Bound' state.
3. **Test Data Persistence:**
- Deploy a test pod that uses the persistent volume:
```yaml
apiVersion: v1
kind: Pod
metadata:
name: test-pod
spec:
containers:
- name: test-container
image: busybox
command: ["/bin/sh", "-c", "echo Hello Kubernetes! > /mnt/data/test-file && sleep 3600"]
volumeMounts:
- name: storage
mountPath: "/mnt/data"
volumes:
- name: storage
persistentVolumeClaim:
claimName: pvc-local
```
- Check if the test pod is running and verify the contents of the persistent volume.
With persistent volumes in place, your Kubernetes cluster is now equipped with reliable storage capabilities. The next step is to deploy WordPress on Kubernetes.
## 6. Deploying WordPress on Kubernetes
Let's dive into the exciting phase of deploying WordPress on your Kubernetes cluster.
### 6.1 Creating WordPress Deployment YAML
Create a YAML file (e.g., wordpress.yaml) to define the WordPress deployment:
```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: wordpress
spec:
replicas: 1
selector:
matchLabels:
app: wordpress
template:
metadata:
labels:
app: wordpress
spec:
containers:
- name: wordpress
image: wordpress:latest
env:
- name: WORDPRESS_DB_HOST
value: mysql-service
- name: WORDPRESS_DB_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-secret
key: password
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: wordpress-service
spec:
selector:
app: wordpress
ports:
- protocol: TCP
port: 80
targetPort: 80
type: LoadBalancer
```
Apply the configuration to create the WordPress deployment:
```bash
sudo k3s kubectl apply -f wordpress.yaml
```
### 6.2 Configuring Service for WordPress
Expose the WordPress service to the external world:
1. **Check Service Status:**
- Verify that the WordPress service is running:
```bash
sudo k3s kubectl get services
```
- Note the external IP assigned to the service.
2. **Access WordPress:**
- Open a web browser and navigate to the external IP of the WordPress service.
- Complete the WordPress installation steps.
### 6.3 Verifying WordPress Deployment
Confirm the successful deployment of WordPress:
1. **Check Deployment Status:**
- Verify the status of the WordPress deployment:
```bash
sudo k3s kubectl get deployments
```
- Ensure the desired number of replicas is running.
2. **Verify Pods:**
- Check the pods associated with the WordPress deployment:
```bash
sudo k3s kubectl get pods
```
- Ensure the pods are in the 'Running' state.
With WordPress up and running, it's time to explore how to scale your deployment for increased traffic.
## 7. Scaling the WordPress Deployment
Kubernetes makes scaling a breeze. Let's explore how to scale your WordPress deployment dynamically.
### 7.1 Horizontal Pod Autoscaling
Enable horizontal pod autoscaling for the WordPress deployment:
1. **Create HPA YAML File:**
- Create a YAML file (e.g., hpa.yaml) for the horizontal pod autoscaler:
```yaml
apiVersion: autoscaling/v2beta2
kind: HorizontalPodAutoscaler
metadata:
name: wordpress-hpa
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: wordpress
minReplicas: 1
maxReplicas: 5
metrics:
- type: Resource
resource:
name: cpu
targetAverageUtilization: 80
```
2. **Apply the HPA Configuration:**
- Apply the configuration to create the horizontal pod autoscaler:
```bash
sudo k3s kubectl apply -f hpa.yaml
```
### 7.2 Testing Autoscaling
Simulate increased load on your WordPress site to trigger autoscaling:
1. **Generate Load:**
- Use a tool like Apache Benchmark to simulate increased traffic:
```bash
ab -n 10000 -c 10 http://<wordpress-service-ip>/
```
- Replace `<wordpress-service-ip>` with the IP of your WordPress service.
2. **Monitor Autoscaling:**
- Check the status of the horizontal pod autoscaler:
```bash
sudo k3s kubectl get hpa
```
- Monitor the number of replicas based on the defined metrics.
### 7.3 Analyzing Scalability
Review metrics and logs to analyze the scalability of your WordPress deployment:
1. **Check Metrics:**
- Examine the metrics gathered by the horizontal pod autoscaler:
```bash
sudo k3s kubectl describe hpa wordpress-hpa
```
2. **Review Logs:**
- Analyze logs for individual pods to identify any performance issues:
```bash
sudo k3s kubectl logs <pod-name>
```
- Replace `<pod-name>` with the name of a WordPress pod.
With autoscaling in place, your WordPress deployment can dynamically adapt to varying workloads. Let's now focus on monitoring and observability.
## 8. Monitoring and Observability
A robust monitoring setup ensures that you stay informed about the health and performance of your Kubernetes cluster. Let's implement monitoring using Prometheus and visualize data with Grafana.
### 8.1 Implementing Prometheus for Monitoring
Deploy Prometheus to gather and store cluster metrics:
1. **Create Prometheus YAML File:**
- Create a YAML file (e.g., prometheus.yaml) for Prometheus deployment:
```yaml
apiVersion: v1
kind: Service
metadata:
name: prometheus-service
spec:
selector:
app: prometheus
ports:
- protocol: TCP
port: 9090
targetPort: 9090
type: LoadBalancer
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: prometheus
spec:
replicas: 1
selector:
matchLabels:
app: prometheus
template:
metadata:
labels:
app: prometheus
spec:
containers:
- name: prometheus
image: prom/prometheus
ports:
- containerPort: 9090
args:
- "--config.file=/etc/prometheus/prometheus.yml"
volumeMounts:
- name: prometheus-config
mountPath: /etc/prometheus
volumes:
- name: prometheus-config
configMap:
name: prometheus-config
```
2. **Apply the Prometheus Configuration:**
- Apply the configuration to create the Prometheus deployment:
```bash
sudo k3s kubectl apply -f prometheus.yaml
```
### 8.2 Grafana Dashboard Configuration
Set up Grafana to visualize Prometheus metrics:
1. **Create Grafana YAML File:**
- Create a YAML file (e.g., grafana.yaml) for Grafana deployment:
```yaml
apiVersion: v1
kind: Service
metadata:
name: grafana-service
spec:
selector:
app: grafana
ports:
- protocol: TCP
port: 3000
targetPort: 3000
type: LoadBalancer
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: grafana
spec:
replicas: 1
selector:
matchLabels:
app: grafana
template:
metadata:
labels:
app: grafana
spec:
containers:
- name: grafana
image: grafana/grafana
ports:
- containerPort: 3000
env:
- name: GF_SECURITY_ADMIN_PASSWORD
value: "admin"
- name: GF_SECURITY_ADMIN_USER
value: "admin"
- name: GF_SECURITY_ALLOW_EMBEDDING
value: "true"
```
2. **Apply the Grafana Configuration:**
- Apply the configuration to create the Grafana deployment:
```bash
sudo k3s kubectl apply -f grafana.yaml
```
3. **Access Grafana:**
- Access the Grafana dashboard using a web browser and the external IP of the Grafana service.
4. **Configure Prometheus as a Data Source:**
- Log in to Grafana (default credentials: admin/admin).
- Add Prometheus as a data source with the URL: `http://prometheus-service:9090`.
5. **Import Kubernetes Dashboard:**
- Import the official Kubernetes dashboard for Grafana.
With Prometheus and Grafana in place, your Kubernetes cluster is now equipped with powerful monitoring and visualization capabilities.
## Conclusion
Congratulations on completing the implementation of a prototype Kubernetes-based cluster for scalable web-based WordPress deployment. This journey covered everything from setting up Raspberry Pis to deploying, scaling, and monitoring your WordPress application.
As you continue to explore the dynamic world of Kubernetes, remember that this guide serves as a solid foundation. Feel free to adapt and enhance your cluster based on evolving requirements. Embrace the scalability, flexibility, and resilience that Kubernetes brings to your web-based applications.
May your Kubernetes journey be filled with seamless deployments, effortless scalability, and a robust infrastructure that stands the test of time. Happy clustering!
Here are some resources I found helpful:
https://kubernetes.io/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/
https://docs.k3s.io/storage
YouTube playlist - https://youtube.com/playlist?list=PL9ti0-HuCzGbI4MdxgODTbuzEs0RS12c2&si=34d3StsvzwqnHc0j
| otumba |
1,751,172 | Simplifying Flutter Deployment with FastLane | Introduction In the world of mobile app development, efficiency and automation are key.... | 0 | 2024-02-04T09:44:27 | https://dev.to/alimaherofficial/simplifying-flutter-deployment-with-fastlane-1f80 | flutter, fastlane, android, cicd | # **Introduction**
In the world of mobile app development, efficiency and automation are key. FastLane offers a suite of tools designed to automate the deployment of mobile apps, making it an indispensable tool for Flutter developers. This guide will walk you through setting up FastLane for Android and macOS, ensuring a smoother deployment process for your Flutter apps.
## **Getting Started with FastLane**
### Install FastLane
1. Android
- install Ruby
- you can use **[RubyInstaller](https://rubyinstaller.org/) or the following terminal commands**
- make sure to open the terminal as an administrator (Windows users only)
```powershell
choco install ruby # you must have Chocolatey package manager
gem install bundler
ruby --version
```
- Install Fastlane
```powershell
gem install fastlane
```
- set environment variables
- open: environment variables form search bar
- under system variables add those keys and values
LC_ALL ⇒ en_US.UTF-8
LANG ⇒ en_US.UTF-8
FLUTTER_ROOT=<Your flutter root file>
1. macOS
- install ruby
- open terminal the write
```bash
brew install ruby && sudo gem install bundler && ruby --version
```
- Install Fastlane
Homebrew needs to be installed before executing **`brew`** commands, as new macOS users might not have it installed.
```bash
brew install fastlane
```
- set environment variables
- open: finder then go to the top bar click Go ⇒ home
- after opening home click cmd&shift&. to see the hidden files then open .zprofile file
- add those lines to your .zprofile file
```bash
export PATH="/opt/homebrew/opt/ruby/bin:$PATH”
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
export FLUTTER_ROOT="<Your flutter root file>" # examle /Users/alimaher/fvm/default/
```
# FastLane For Android
- **Setting up *fastlane***
- In the Visual Studio Code terminal, navigate to the Android folder `cd android`
- then run `fastlane init`
You'll be asked to confirm that you're ready to begin, and then for a few pieces of information. To get started quickly:
1. Provide the package name for your application when asked (e.g. io.fabric.yourapp)
2. Press enter when asked for the path to your json secret file
3. Answer 'n' when asked if you plan on uploading info to Google Play via fastlane (we can set this up later)
That's it! *fastlane* will automatically generate a configuration for you based on the information provided.
You can see the newly created `./fastlane` directory, with the following files:
- `Appfile` which defines configuration information that is global to your app
- `Fastfile` which defines the "lanes" that drive the behavior of *fastlane*
- **Setting up *supply***
*supply* is a *fastlane* tool that uploads app metadata, screenshots and binaries to Google Play. You can also select tracks for builds and promote builds to production!
For *supply* to be able to initialize, you need to have successfully uploaded an APK to your app in the Google Play Console at least once.
Setting it up requires downloading a credentials file from your Google Developers Service Account.
### **Collect your Google credentials**
**Tip:** If you see Google Play Console or Google Developer Console in your local language, add `&hl=en` at the end of the URL (before any `#...`) to switch to English. All the links below already have this to make it easier to find the correct buttons.
**Note:** if you face issues when following these instructions, you might want to refer to the [official documentation by Google](https://developers.google.com/android-publisher/getting_started/?hl=en).
1. Open the [Google Play Console](https://play.google.com/console/?hl=en)
1. Click **Account Details**, and note the **Developer Account ID** listed there
1. Enable the [Google Play Developer API](https://console.developers.google.com/apis/api/androidpublisher.googleapis.com/?hl=en) by selecting an existing Google Cloud Project that fits your needs and pushing **ENABLE**
1. If you don't have an existing project or prefer to have a dedicated one for *fastlane*, [create a new one here](https://console.cloud.google.com/projectcreate/?hl=en) and follow the instructions
2. Open [Service Accounts on Google Cloud](https://console.cloud.google.com/iam-admin/serviceaccounts?hl=en) and select the project you'd like to use
1. Click the **CREATE SERVICE ACCOUNT** button at the top of the **Google Cloud Platform Console** page
2. Verify that you are on the correct Google Cloud Platform Project by looking for the **Developer Account ID** from earlier within the light gray text in the second input, preceding `.iam.gserviceaccount.com`, or by checking the project name in the navigaton bar. If not, open the picker in the top navigation bar, and find the right one.
3. Provide a `Service account name` (e.g. fastlane-supply)
4. Copy the generated email address that is noted below the `Service account-ID` field for later use
5. Click **DONE** (don't click **CREATE AND CONTINUE** as the optional steps such as granting access are not needed):
6. Click on the **Actions** vertical three-dot icon of the service account you just created
7. Select **Manage keys** on the menu
8. Click **ADD KEY** → **Create New Key**
9. Make sure **JSON** is selected as the `Key type`, and click **CREATE**
10. Save the file on your computer when prompted and remember where it was saved at
3. Open the [Google Play Console](https://play.google.com/console/?hl=en) and select **Users and Permissions**
1. Click **Invite new users**
2. Paste the email address you saved for later use into the email address field
3. Click on **Account Permissions**
4. Choose the permissions you'd like this account to have. We recommend **Admin (all permissions)**, but you may want to manually select all checkboxes and leave out some of the **Releases** permissions such as **Release to production, exclude devices, and use Play App Signing**
5. Click on **Invite User**
You can use
`[fastlane run validate_play_store_json_key json_key:/path/to/your/downloaded/file.json](https://docs.fastlane.tools/actions/validate_play_store_json_key/)` to test the connection to Google Play Store with the downloaded private key. Once that works, add the path to the JSON file to your [Appfile](https://docs.fastlane.tools/advanced/Appfile):
```ruby
json_key_file("path/to/your/play-store-credentials.json")
package_name("my.package.name")
```
### **Fetch your app metadata**
If your app has been created on the Google Play developer console, you're ready to start using *supply* to manage it! Run:
```
fastlane supply init
```
and all of your current Google Play store metadata will be downloaded to `fastlane/metadata/android`.
## Test and deploy
- internal test
- open: `android/fastlane/Fastfile` file, in this file you will add your setting for upload new aab for internal testing.
```ruby
default_platform(:android)
# upload to internal test to Google Play
lane :internal do
# build the app bundle if you haven't already
gradle(task: 'bundleRelease')
# Upload to internal test
upload_to_play_store(
track: 'internal',
aab: '../build/app/outputs/bundle/release/app-release.aab', # Update this path if your AAB is generated in a different location
skip_upload_apk: true,
skip_upload_images: true,
skip_upload_screenshots: true,
skip_upload_metadata: true,
skip_upload_changelogs: true,
skip_upload_aab: false,
)
end
```
- now increase your build number in pubspec.yaml
- now in your terminal run the following commands:
```bash
flutter clean
flutter pub get
flutter build appbundle
cd ./android/
fastlane internal # Now you will push your aab to the internal test
cd ..
```
---
- release
- open: `android/fastlane/Fastfile` file, in this file you will add your sitting for upload new aab for internal testing.
```ruby
default_platform(:android)
# upload release to Google Play
lane :release do
gradle(task: 'bundleRelease')
# Upload to internal test
upload_to_play_store(
track: 'production',
aab: '../build/app/outputs/bundle/release/app-release.aab', # Update this path if your AAB is generated in a different location
skip_upload_apk: true,
skip_upload_images: true,
skip_upload_screenshots: true,
skip_upload_metadata: true,
skip_upload_changelogs: true,
skip_upload_aab: false,
)
end
```
- now increase your build number in pubspec.yaml
- now in your terminal run the following commands:
```bash
flutter clean
flutter pub get
flutter build appbundle
cd ./android/
fastlane release # Now you will push your aab to the internal test
cd ..
```
---
- increase version number automatically
- add script.rb file:
create new file `script.rb` in android folder: `andoird/script.rb`
this code will edit in your pubspec.yaml file to increase your version
```ruby
# pubspec_path = '../pubspec.yaml'
pubspec_path = File.expand_path('../../pubspec.yaml', __FILE__)
# Read the file into an array of lines
lines = File.readlines(pubspec_path)
# Find the line containing the version and update it
lines.map! do |line|
if line.strip.start_with?('version:')
if line =~ /(\d+)\.(\d+)\.(\d+)\+(\d+)/
major, minor, patch, build = $1.to_i, $2.to_i, $3.to_i, $4.to_i
patch += 1
build += 1
line = "version: #{major}.#{minor}.#{patch}+#{build}\n"
end
end
line
end
# Write the updated lines back to the file
File.open(pubspec_path, 'w') { |file| file.puts(lines) }
```
- open: `android/fastlane/Fastfile` file, in this file you will add your sitting for increase your version number automatically
```ruby
lane :icrease_build_number do
# script.rb is a ruby script that increments the build number in pubspec.yaml
system("ruby ../script.rb")
end
```
- now increase your build number in pubspec.yaml
- now in your terminal run the following commands:
```bash
cd ./android/
fastlane icrease_build_number
cd ..
```
- you can use both of release or internal and icrease_build_number fastlane action to fully automate your deployment steps using this code:
```bash
cd ./android/
fastlane icrease_build_number
cd ..
flutter clean
flutter pub get
flutter build appbundle
cd ./android/
fastlane release # or use internal
cd ..
``` | alimaherofficial |
1,751,237 | Large Language Models: Library Overview for Training, Fine-Tuning, Intererence and More | In essence, Large Language Models are neural networks with a transformer architecture. The evolution... | 0 | 2024-03-04T06:11:56 | https://dev.to/admantium/large-language-models-library-overview-for-training-fine-tuning-intererence-and-more-33lm | llm, machinelearning | In essence, Large Language Models are neural networks with a transformer architecture. The evolution of LLMs is a history of scaling: input data sources and tokenization, training methods and pipeline, model architecture and number of parameters, and hardware required for training and interference with large language models. For all of these concerns, dedicated libraries emerged that provide the necessary support for this continued evolution.
This article provides a concise snapshot of libraries for LLM training, fine-tuning, interference, optimizations, vector databases, and utilities.
_This article was written in December 2023. The availability of the libraries may have changed until the publication date of this article_.
_This article originally appeared at my blog [admantium.com](https://admantium.com/blog/llm06_general_library_overview/)_.
### LLM Training
The training of LLMs needs high-level scheduling of input batches, gradient calculation and gradient updates for multiple nodes and GPUs.
- [Alpa](https://github.com/alpa-projects/alpa): Python project to train and run LLMs with on-premise GPU clusters.
- [Colossoal AI](https://github.com/hpcaitech/ColossalAI#OPT): Distributed training of LLMs that supports two specific forms of reinforcement learning: reward model creation and reinforcement learning with human intervention.
- [GPTNeoX](https://github.com/EleutherAI/gpt-neox): A library for efficiently scale training on several GPUs.
- [Fairscale](https://github.com/facebookresearch/fairscale): A PyTorch expansion for efficient data batching when training on a restricted amount of GPUs.
- [DeepSpeed](https://github.com/microsoft/DeepSpeed): Distributed training and interference.
- [JAX](https://github.com/google/jax): Combines two libraries into a coherent framework to execute machine learning pipelines parallelly on several nodes. It includes the [Tensorflow XLA](https://www.tensorflow.org/xla) library that provides just-in-time compilation for running on GPU, TPU or CPU, and the [Autograd](https://github.com/hips/autograd) function to compute function derivatives.
- [Megatron-LM](https://github.com/NVIDIA/Megatron-LM): A framework for multi-node and model-parallel training of transformer models.
- [T5X](https://github.com/google-research/t5x): An integrated framework for training, evaluation and interference.
### LLM Fine-Tuning
Pretrained LLMs, also called foundation models, need to be customized for specific domains and with specific training materials. This fine-tuning process produces models with desired capabilities and content.
- [llama_index](https://github.com/run-llama/llama_index): A framework for designing data ingestion pipelines to fine-tune LLMs with private data sources.
- [nanoGPT](https://github.com/karpathy/nanoGPT): Training and fine-tuning GPT2 models.
- [promptsource](https://github.com/bigscience-workshop/promptsource/): A tool for managing versioned NLP prompts, which can be used for example during fine-tuning.
- [trlx](https://github.com/CarperAI/trlx): Fine-tuning with using reinforcement learning by using a reward function or a reward-labeled dataset.
- [xturing](https://github.com/stochasticai/xturing): Complete and coherent fine-tuning of transformer models including data ingestion, multiple GPU training, and model optimizations like INT4 and LoRa.
### LLM Interference
Trained and potentially fine-tuned models needed to be loaded in memory and feed with appropriated tokenized input that matches the same structure that was used for training. The output of LLMs, which are neural networks, is a numerical representation that needs to be converted to text again. Interference libraries solve these task and allow users to work with texts.
- [Embedchain](https://github.com/embedchain/embedchain): A python library for designing retrieval-augment generation prompts using a simple API to reference external datasources and loading different LLMs as the application base.
- [ggml](https://github.com/ggerganov/ggml): LLM interference for Tensorflow models supporting CPU and GPU interaction. Subprojects for running LLMs exists, sich as [llama](https://github.com/ggerganov/llama.cpp) and [whisper](https://github.com/ggerganov/whisper.cpp).
- [lit-gpt](https://github.com/Lightning-AI/lit-gpt): A Python library for running several open source LLMs locally, such as LLaMA, Mistral, or StableLM.
- [lit-llama](https://github.com/lightning-AI/lit-llama): Running LLaMA models locally.
- [llama2.c](https://github.com/karpathy/llama2.c): Running fine-tuned LLaMA models.
- [LLMZoo]( https://github.com/FreedomIntelligence/LLMZoo): A framework for running open-source LLMs, and it also includes feature for training/fine-tuning and evaluating LLMs, as well as datasets.
- [Transformers](https://huggingface.co/transformers): Transformers is a versatile library for loading many pretrained models and incorporate them into a PyTorch or TensorFlow pipeline. This library exposes its models as objects with convenient methods that help to introspect and transform its properties.
### LLM Interference Optimizations
Interference is a compute-heavy process. Utilizing optimizations based on the trained model, such as reducing the floating-point precision, greatly reduces required resources with only minimal performance impact.
- [bitsandbytes](https://github.com/TimDettmers/bitsandbytes): Provides 8bit CUDA functions for training with PyTorch. It is used to parametrize the Transformer model definition.
- [peft](https://github.com/huggingface/peft): An acronym for parameter-efficient fine-tuning methods. This library enables the exposure and modification of trainable parameters from an LLM. It is used to define the custom quantization properties that create an abstracted model.
- [TensorRT-LLM](https://github.com/NVIDIA/TensorRT-LLM): A LLM interference optimizer that provides a high-level Python API for loading LLMs as well as creating standalone Python and C++ runtimes for executing LLMs. It also contains an integration to the Triton Interference Servers. Earlier known as [FasterTransformer](https://github.com/NVIDIA/FasterTransformer).
### LLM Interference Vector Databases
Vectors for single words or complete documents can be stored in a vector database. Providing embeddings in a simple-access store enables fast-retrieval during training, but are mostly used at interference time for providing textual context in prompts.
- [Chroma](https://www.trychroma.com/): Open-source project with Python bindings and API support for several large language models. The embeddings format can be tailored towards its use case: Default type is sentence transformer, but it can also work with OpenAI embeddings for GPT.
- [Milvus](https://milvus.io/): Provides a Kubernetes-ready database with convenient Python bindings. Internally, the key-value store [MinIO](https://min.io) is used.
- [PineCone](https://www.pinecone.io): An enterprise solution that offers managed GCP and AWS platforms for embeddings.
- [Postgres pgvector](https://github.com/pgvector/pgvector) An open-source extension to Postgres that allows the creation of custom schema to hold word vectors.
- [Redis Enterprise](https://redis.com/solutions/use-cases/vector-database/) An enterprise-only feature of Redis to store text, audio and video as vectors and even perform similarity comparisons with build-in commands.
- [Weaviate](https://weaviate.io/): Open-Source project that stores text documents and their vectors as JSON data and offers an easy-to-use API that processes GraphQL like requests for similarity searches.
## LLM Cloud Environment
All major cloud providers offer dedicated platforms to support at least training and interferences, if not all LLM lifecycle phases, as a paid service.
- [Enterprise-AI](https://www.nvidia.com/en-us/data-center/products/ai-enterprise/): Nvidias cloud platform for developing and hosting AI models, supporting tight integration with their [Triton SDK](https://www.nvidia.com/en-us/ai-data-science/products/triton-inference-server/) for developing interference server runners.
- [Fabric](https://www.microsoft.com/de-de/microsoft-fabric): Microsoft cloud platform covering the complete lifecycle of LLM development and interference.
- [Vertex AI](https://cloud.google.com/vertex-ai): Googles cloud platform for training and hosting LLMs and other generative AI models.
## LLM Utilities
This section includes other interesting projects or products I encountered during research.
- [evals](https://github.com/openai/evals): A framework for evaluating LLMs.
- [LLMOps](https://github.com/microsoft/lmops): Meta repository about Microsoft Research LLM projects, including prompts, acceleration, and alignment.
- [Meta Group](https://huggingface.co/facebook): All models published by Meta, including [Metaseq](https://github.com/facebookresearch/metaseq) for pretrained Transformer models.
- [Nebuly](https://www.nebuly.com/): Platform for getting user analytics from LLMs.
- [XManager](https://github.com/google-deepmind/xmanager): A platform for running and packaging machine learning projects that can be executed locally or via Google Cloud Platform.
- [Lambda Stack](https://lambdalabs.com/lambda-stack-deep-learning-software): A multi-repository that includes Tensorflow, Keras, PyTorch and Cuda support bundled into one package.
## Conclusion
The landscape of LLMs is huge. This article listed more than 30 libraries that can be used for LLM training, fine-tuning, interference, interference optimization and vector databases. It also listed cloud provider applications and other projects in the context of LLMs.
| admantium |
1,751,311 | IT Hardware Asset Management: A Step-by-Step Process | IT hardware assets are essential for any business in the digital age, but they also pose significant... | 0 | 2024-02-04T13:42:34 | https://dev.to/jerryesevel/it-hardware-asset-management-a-step-by-step-process-3p6c | ithardware, itasset | IT hardware assets are essential for any business in the digital age, but they also pose significant challenges for CEOs, founders, and CIOs. How can they [track, maintain, and optimize their IT hardware assets](http://esevel.com/blog/it-asset-management) when they are distributed across different locations and devices?
This blog explores the complexity of IT hardware asset management and provides 8 effective strategies to improve operational efficiency and minimize IT hardware risks.
## IT Hardware Asset Management: What It Is and Why It Matters
**The hardware asset management processes**
IT hardware asset management, at its heart, is a strategic approach focused on managing and optimizing the physical components of an organization’s IT infrastructure. This includes various hardware such as laptops, desktops, servers, printers, and monitors. The process involves a comprehensive cycle that begins with the acquisition of these assets and extends through their deployment, maintenance, and eventual disposal.
IT hardware asset management is not just about recording what assets a company owns; it’s a dynamic process that tracks each asset’s location, status, and performance throughout its lifecycle.
**The benefits of hardware asset management**
Understanding the importance of hardware asset management is key to recognizing its value to an organization.
Firstly, it enables companies to make informed decisions about their IT infrastructure. A well-maintained asset inventory provides valuable data that can inform purchasing decisions, budgeting, and long-term IT strategy.
Secondly, loss prevention is another critical aspect of hardware asset management. With a comprehensive tracking system, companies can quickly detect missing or underutilized assets, reducing financial risks and ensuring optimal asset usage. This is particularly important in a hybrid or remote working environment, where tracking the location and status of hardware assets can be more challenging.
Furthermore, [managing the hardware asset lifecycle](http://esevel.com/blog/asset-lifecycle-management) effectively helps organizations maximize each asset’s value. This lifecycle management includes timely upgrades and replacements, ensuring that the company’s IT infrastructure remains modern and efficient. It also involves considering the total cost of ownership, which includes not just the purchase price, but also maintenance costs, software licenses, and the eventual disposal costs.
## The 8-Step Guide to IT Hardware Asset Management Success
Effective IT hardware asset management is pivotal for businesses, particularly those operating with remote teams.
**Step 1: Assessing your current situation**
The first step in hardware asset management is to assess your current inventory. This involves a thorough audit of all existing IT hardware. Identify what assets you have, where they are located, and their current condition. For remote companies, this step is critical as it helps track assets distributed across various locations.
Assessing your situation also involves understanding your hardware’s performance. Questions like:
- Are your current assets meeting the needs of your employees?
- Do they align with the company’s current and future technology requirements?
**Step 2: Setting clear goals**
Once you have a clear understanding of your current assets, the next step is to set clear goals. What do you want to achieve with your IT hardware asset management? Goals might include reducing costs, improving efficiency, or ensuring all remote employees have the necessary tools.
Setting goals is not just about the end results; it’s also about determining the metrics you will use to measure success. This could be a reduction in maintenance costs, an increase in asset utilization rates, or a decrease in the time it takes to resolve hardware issues.
**Step 3: Establishing policies and procedures**
Establishing clear policies and procedures is essential for effective hardware asset management. This step involves creating guidelines for purchasing, deploying, maintaining, and disposing of IT hardware.
🧐 Check out our free [IT Asset Management Policy Template](http://esevel.com/guides/it-asset-management-policy)
For remote and hybrid teams, policies should also include protocols for distributing and retrieving hardware assets. Moreover, procedures should also include how to handle hardware failures, upgrades, and end-of-life disposal. A well-defined set of policies and procedures ensures consistency in managing assets and helps avoid any potential legal or compliance issues.
**Step 4: Choosing the right tools and software**
The fourth step involves selecting the right tools and software for managing your IT hardware assets. The ideal tools should offer features that align with your goals and simplify the management process. This includes inventory management, asset tracking, and reporting capabilities.
For remote companies, choosing software that integrates with other business systems, such as HR and finance, is crucial. This integration ensures a seamless flow of information and a holistic view of your assets.
**Step 5: Inventory management**
Effective inventory management is a cornerstone of successful IT hardware asset management. It involves maintaining an up-to-date record of all hardware assets, and tracking their location, status, and condition. For remote teams, this step is crucial to ensure that employees have the necessary equipment and that assets are being utilized efficiently.
Inventory management should be an ongoing process, not a one-time event. Regular updates are necessary to reflect new acquisitions, disposals, or changes in asset status.
**Step 6: Asset tagging and labeling**
Asset tagging and labeling is a vital step in hardware asset management, particularly for companies with distributed workforces. It involves assigning a unique identifier to each hardware asset. This tag can be a barcode, QR code, or RFID tag, which helps in tracking the asset throughout its lifecycle.
Effective tagging and labeling enable quick identification, helping in loss prevention and efficient management. It also simplifies the process of conducting audits, tracking maintenance schedules, and managing deployments and retrievals.
**Step 7: Regular audits and updates**
Regular audits are essential to ensure the accuracy of your hardware asset inventory. Audits help identify discrepancies, missing items, and opportunities for optimization. For remote companies, this might include verifying that employees have the necessary equipment and that it’s functioning as expected.
Audits also provide insights into usage patterns, which can inform future purchasing decisions and help identify opportunities for cost savings. Regular updates based on these audits are crucial to keep the inventory aligned with the actual state of assets.
**Step 8: Training and employee involvement**
The final step is ensuring that all employees are well-informed about the policies and procedures related to IT hardware asset management. Training and involving employees in the process is vital, especially in remote work settings where employees are often responsible for managing their own hardware to some extent.
Training should cover the proper use of hardware, reporting procedures for issues, and guidelines for requesting new or replacement equipment. Involving employees in the process not only ensures compliance with asset management policies but also encourages a sense of ownership and responsibility.
## How Esevel can help you manage your IT hardware remotely
These eight steps can help companies establish a solid foundation for managing their IT hardware assets, resulting in increased efficiency, lower costs, and better service for their remote employees. However, this process can be more difficult for teams that are spread across different locations.
That's why [Esevel](http://esevel.com/) provides a complete solution for companies with distributed teams in the Asia Pacific. Our platform streamlines the whole hardware asset management lifecycle, helping remote businesses with the acquisition, maintenance, and recovery of IT devices.
By leveraging the power of software-as-a-service and local IT support, we enable businesses to manage their hardware assets effortlessly, regardless of their team's location.
 | jerryesevel |
1,751,344 | Java Mono.defer usecase | The definition of Mono.defer is described in detail in stack overflow comment. If we use Mono.defer,... | 0 | 2024-02-04T14:53:57 | https://dev.to/yangbongsoo/java-monodefer-usecase-3g63 | java | The definition of `Mono.defer` is described in detail in [stack overflow comment](https://stackoverflow.com/questions/55955567/what-does-mono-defer-do/55972232#55972232). If we use Mono.defer, we can operate Mono.defer's wrapped code at the time of execution, not at the time of declaration. So I understood that It would be necessary to subscribe several times in one context.
However, even in a situation that was not the case, I met `Mono.defer` and couldn't understand at first.
Let's see below code. If we don't use `Mono.defer`, we have to declare separately Mono for switchIfEmpty. If there is a value in the cache, `this.apiClient.getDataNoById(id).doOnSuccess(TODO)` method is always executed even if switchIfEmpty is not executed.
```java
// without using Mono.defer
public Mono<Data> requiredById(String id) {
Mono<Long> alternate = this.apiClient.getDataNoById(id).doOnSuccess(TODO);
return Mono.justOrEmpty(cache.getData(id))
.switchIfEmpty(alternate)
.flatMap(this::requiredOne)
...
}
```
If we use `Mono.defer` instead, we can make `Mono.defer`'s wrapped code operate when switchIfEmpty runs.
```java
// use Mono.defer
public Mono<Data> requiredById(String id) {
return Mono.justOrEmpty(cache.getData(id))
.switchIfEmpty(Mono.defer(() -> this.apiClient.getDataNoById(id).doOnSuccess(TODO)))
.flatMap(this::requiredOne)
...
}
```
However, the getDataNoById method returns the Mono type and has not subscribed yet. Therefore, the actual webClient call does not occur. So I didn't understand why `Mono.defer` was necessary in there.
As a result, If switchIfEmpty supports the lambda expression, It doesn't have to use `Mono.defer`. But java doesn't support it, so they used `Mono.defer`.
cf) `spring.web.reactive.dispatcherHandler` also uses `Mono.defer`. Even though it is simply creating an Exception object and wrapping it with `Mono.error`, using `Mono.defer` seems to have written it as a way to create a clean code.
```java
@Override
public Mono<Void> handle(ServerWebExchange exchange) {
if (this.handlerMappings == null) {
return createNotFoundError();
}
return Flux.fromIterable(this.handlerMappings)
.concatMap(mapping -> mapping.getHandler(exchange))
.next()
.switchIfEmpty(createNotFoundError())
.flatMap(handler -> invokeHandler(exchange, handler))
.flatMap(result -> handleResult(exchange, result));
}
private <R> Mono<R> createNotFoundError() {
return Mono.defer(() -> {
Exception ex = new ResponseStatusException(HttpStatus.NOT_FOUND, "No matching handler");
return Mono.error(ex);
});
}
``` | yangbongsoo |
1,751,435 | Next.js Codebase Analysis <> create-next-app <> index.ts explained - Part 1.13 | In the previous article, I wrote about isFolderEmpty function that is used to prevent providing... | 0 | 2024-02-04T16:23:58 | https://dev.to/ramunarasinga/nextjs-codebase-analysis-create-next-app-indexts-explained-part-113-14k9 | webdev, javascript, react, nextjs | In the previous article, I wrote about isFolderEmpty function that is used to prevent providing conflicting names for your project.
In this article, I will try to understand the following code snippet.
```
// Remember the example option?
// if there is no example provided as part of your CLI command
// that is where you see prompts for your project configuration
const example = typeof program.example === 'string' && program.example.trim()
// What is conf.get? in the one of previous articles, I wrote about Conf
// package for setting preferences stored specific to your device
const preferences = (conf.get('preferences') || {}) as Record<
string,
boolean | string
>
/**
* If the user does not provide the necessary flags, prompt them for whether
* to use TS or JS.
*/
if (!example) {
// default preferences variable
const defaults: typeof preferences = {
typescript: true,
eslint: true,
tailwind: true,
app: true,
srcDir: false,
importAlias: '@/*',
customizeImportAlias: false,
}
// Interesting variable name
// getPrefOrDefault
// What if you write getConfPreferenceOrDefault? long one
// Should prefer to abbreviate where possible, but not overdo it where it
// meaning changes
const getPrefOrDefault = (field: string) =>
preferences[field] ?? defaults[field]
```
I have provided the corresponding comments in the above code snippet.
## Conclusion:
This code snippet uses [Conf](https://www.npmjs.com/package/conf) preferences. If you have a package that takes user input via prompts in the CLI, I recommend this conf package to store user preferences local to their device.
I am building a platform that explains best practices used in open source by elite programmers. [Join the waitlist](https://docs.google.com/forms/d/e/1FAIpQLSe2JCZAaIB5oXzNHLTrYJR4LMZ5SEwrGPgmG5DeFWdDhu8-Gw/viewform) and I will send you the link to the tutorials once they are ready.
If you have any questions, feel free to reach out to me at ramu.narasinga@gmail.com | ramunarasinga |
1,751,457 | moving forward in Frontend | last month i enrolled for META FRONTEND DEVELEOPER PROFESSIONAL CERTIFICATE. It Comprises of 9 course... | 0 | 2024-02-04T16:53:35 | https://dev.to/codebuddylarin/moving-forward-in-frontend-1l34 | webdev, javascript, react, productivity | last month i enrolled for META FRONTEND DEVELEOPER PROFESSIONAL CERTIFICATE. It Comprises of 9 course series. Today marks the completion of my first Course Series out of 9. This beginner Course gave me a surface level idea of Frontend Development. Starting from HTML | CSS | React | Internet | DOM | Bootstrap . It gave a really good basic understanding of how the websites work and how to make user-friendly and responsive websites.
the total estimated time given by coursera is around 7 months if we go by 6 hr per week (which is quite slow according to me), we can easily do this complete course in 45 days (1.5 months) by working around 5-6 hr a day depending on your individual learning schedule. I look forward to make a successful career i | codebuddylarin |
1,751,499 | Cost-Effective Cloud Security: Fort Knox on a Budget for Financial Data | Worried about safeguarding your financial data in the cloud? Budget blues got you down? Fear not,... | 0 | 2024-02-04T18:41:12 | https://dev.to/marufhossain/cost-effective-cloud-security-fort-knox-on-a-budget-for-financial-data-546p | Worried about safeguarding your financial data in the cloud? Budget blues got you down? Fear not, financial champions! This guide unlocks the secrets to building robust [AWS security](https://www.clickittech.com/aws/aws-security/) without breaking the bank. We'll show you how to create a fortress for your financial fortress, all while keeping your budget happy. Think of it as high-tech security on a superhero budget! Ready to conquer cloud security like a pro?
**Prioritize your defences:** Not all data is created equal. Identify and classify your sensitive financial data (customer information, transaction records, etc.) to prioritize security measures. Focus on protecting high-value data with stronger encryption, access controls, and monitoring.
**Embrace automation:** Time is money, especially when it comes to security. Leverage automation tools for tasks like patching systems, detecting anomalies, and generating security reports. This frees up your security team for more strategic activities, maximizing their impact.
**Utilize native AWS security services:** AWS offers a wealth of built-in security features like IAM (Identity and Access Management) for granular access control, S3 bucket encryption for data at rest, and WAF (Web Application Firewall) to shield against web attacks. Take advantage of these cost-effective options before exploring third-party solutions.
**Right-size your resources:** Don't overprovision! Only allocate the resources your workloads truly need. Scaling your instances and storage to the optimal level minimizes unnecessary costs and reduces the attack surface. Consider tools like AWS Auto Scaling to automate resource adjustments based on demand.
**Embrace open-source security tools:** The open-source community offers a treasure trove of security tools like intrusion detection systems and vulnerability scanners. While they might require some technical expertise to set up, they can be a cost-effective way to bolster your security posture.
**Invest in employee training:** The weakest link in any security chain is often human error. Equip your employees with security awareness training to identify and report suspicious activity. Empower them to be your first line of defense against phishing attacks and social engineering scams.
**Conduct regular security audits:** Don't wait for a breach to happen. Proactively identify vulnerabilities by conducting regular security audits. Utilize AWS Security Hub for a centralized view of your security posture and prioritize remediation efforts based on the identified risks.
Remember, security is a shared responsibility: Collaborate with your AWS provider to leverage their expertise and support services. Many providers offer security best practices guides, threat intelligence sharing, and incident response assistance, all of which can contribute to a more secure and cost-effective environment.
By implementing these strategies, you can achieve robust AWS security for your financial data without breaking the bank. Remember, security is an ongoing journey, not a one-time destination. Continuously adapt your approach to evolving threats and embrace a culture of security awareness within your organization. With these steps, you can ensure your financial data remains safe and secure in the ever-changing cloud landscape. | marufhossain | |
1,751,606 | The Growing Popularity of Hybrid-Casual Games | Explore the rise of hybrid-casual games, merging hyper-casual simplicity with casual game depth, and their impact on the evolving gaming industry. | 0 | 2024-02-04T21:25:25 | https://dev.to/pubnub/the-growing-popularity-of-hybrid-casual-games-4e9k | The video game industry has been witnessing significant growth in recent years, particularly in the mobile games sector. In 2022, mobile games [accounted for 50% of the global game revenue](https://newzoo.com/resources/blog/the-games-market-in-2022-the-year-in-numbers), asserting their dominance in the [gaming industry](https://www.pubnub.com/solutions/gaming/). Among the latest trends unfolding within the industry, the rise of hybrid-casual games has garnered considerable attention.
Hybrid-casual games are an innovative subgenre that merges elements of hyper-casual games and mid-core games, providing a unique gaming experience. These games deliver simple and accessible gameplay with more engaging and immersive features typically associated with mid-core games. This fusion of genres has sparked the evolution of the hyper-casual genre, positioning hybrid-casual games as a significant force in the games market.
The transition from hyper-casual to hybrid-casual games reflects the changing preferences of gamers and developers alike. Gamers are increasingly seeking more depth and complexity in their gaming experiences, while developers are exploring effective [monetization strategies](https://www.pubnub.com/solutions/enterprise-software/) and striving for higher retention rates amongst a diverse audience.
Understanding Hyper-Casual and Hybrid-Casual Games
--------------------------------------------------
Both hyper-casual and hybrid-casual games have achieved immense success on both Android and Apple iOS mobile games. Despite sharing some similarities, they possess distinct characteristics that set them apart.
**Hyper-casual games** are characterized by their simplicity and accessibility. These games typically feature minimalistic graphics, intuitive controls, and straightforward game mechanics. Players can easily pick up and play a hyper-casual game, making them ideal for casual gamers. Popular examples of hyper-casual games include titles like Voodoo's [Helix Jump](https://apps.apple.com/us/app/helix-jump/id1345968745) and Ketchapp's [Stack](https://apps.apple.com/us/app/stack/id1080487957).
Conversely, **hybrid-casual games** amalgamate the best elements of hyper-casual games with more engaging and immersive features found in mid-core or core gameplay experiences. These games often have more depth, including elements like progression systems, upgrades, and live ops events, which entice players to return for more. Furthermore, hybrid-casual games usually incorporate [social features and leaderboards](https://www.pubnub.com/docs/general/resources/design-pattern-friend-list-status-feeds), adding a competitive aspect that enhances player engagement. Examples of successful hybrid-casual games include Supercell's [Clash Royale](https://clashroyale.com/) and Rovio's [Angry Birds 2](https://www.angrybirds.com/games/angry-birds-2/).
In comparison to hyper-casual games, hybrid-casual games offer a more engaging experience for players. They provide the same easy-to-learn mechanics as hyper-casual games while adding layers of depth and complexity that cater to a wider target audience.
Evolution of Hypercasual Games
------------------------------
The shift from hyper-casual to hybrid-casual games is primarily driven by the increasing demand for more complex and engaging gameplay experiences. While hyper-casual games offer quick, simple distractions, players are now seeking games with deeper mechanics, robust progression systems, and greater replayability. This demand has prompted developers to create games that cater to a broader audience, incorporating elements typically found in mid-core and even hardcore games.
The evolving landscape of monetization strategies in the mobile games market is another factor driving the shift towards hybrid-casual games. Hyper-casual games primarily rely on ad revenue for income, but as the market becomes saturated, this business model has proven to be less sustainable. In contrast, hybrid-casual games provide a wider range of monetization options, including in-app purchases and hybrid monetization models that combine ads with other revenue streams.
Advancements in game development tools and technologies have made the creation of hybrid-casual games more accessible. Platforms like [Unity](https://unity.com/) and [Unreal Engine](https://www.unrealengine.com/) provide developers with the engines, features, and services needed to handle the scalability requirements of their games.
Finally, the introduction of social features and live ops events in mobile games has also contributed to the evolution of hyper-casual games. By incorporating elements such as leaderboards, multiplayer modes, and time-limited events, developers can boost player engagement and retention, further driving the shift towards hybrid-casual games.
Monetization Strategies of Hybrid-Casual Games
----------------------------------------------
The rising popularity of hybrid-casual games can be partly attributed to their innovative monetization strategies. These strategies differ from those employed in hyper-casual games, offering developers more opportunities to generate revenue and establish sustainable business models.
Unlike hyper-casual games, which predominantly rely on advertising revenue, hybrid-casual games employ a variety of monetization methods, including in-app purchases (IAP). IAP allows players to purchase items in-game, enabling players to progress faster by purchasing items or currency, as well as cosmetics to customize their character.
Another monetization strategy used in hybrid-casual games is the hybrid monetization model, which combines IAP with advertising. This approach enables developers to cater to a wider audience, as players can choose whether to make purchases or watch ads to progress in the game. This flexibility allows developers to reach both casual gamers who prefer ad-supported gameplay and more dedicated players who are willing to spend money on IAPs.
In addition to these strategies, hybrid-casual games often incorporate live ops events and other time-limited activities that encourage players to engage with the game regularly. These events can drive both user acquisition and retention, as they create a sense of urgency and exclusivity for players. By offering unique rewards or content during these events, developers can motivate players to return to the game and potentially spend more money on IAPs or watch ads to access the exclusive content.
The monetization strategies of hybrid-casual games are more diverse and flexible than those of hyper-casual games, driving their increasing popularity in the gaming industry. By employing a combination of in-app purchases, advertising, and live ops events, developers can create more engaging and lucrative gaming experiences that appeal to a wider audience, generating a higher lifetime value (LTV) per player.
Social Features and Rewards in Hybrid-Casual Games
--------------------------------------------------
The integration of social features and rewards in hybrid-casual games plays a crucial role in their growing popularity. Social features in hybrid-casual games can include chat systems, friend lists, and the ability to share progress or achievements with others. These elements foster a sense of community among players, encouraging them to compete with friends and share their experiences. For example, leaderboards allow players to compare their scores with others, creating a sense of competition that can boost engagement and retention.
Rewards systems, such as daily login bonuses, achievements, and in-game events, also play a significant role in the success of hybrid-casual games. By offering players incentives to return to the game regularly, developers can increase player retention and encourage in-app purchases or ad views. Furthermore, personalized rewards based on player behavior can create a more engaging and tailored gaming experience, which can contribute to higher player satisfaction and long-term retention.
[Unity](https://unity.com/products/unity-ads/user-acquisition) and [Unreal Engine](https://docs.unrealengine.com/5.2/en-US/using-in-game-ads-in-unreal-engine-projects-on-mobile-platforms/) both offer features that make it easier for developers to incorporate these social components and rewards systems into their hybrid-casual games. These technologies enable developers to create more complex and engaging gaming experiences, which ultimately contribute to the growing popularity of the hybrid-casual genre.
What’s Next
-----------
Hybrid-casual games have become the de facto genre of mobile games in the gaming industry, offering a unique blend of accessibility and depth that appeals to a wide range of players.
However, as competition increases, developers must continue to innovate and differentiate their games to stand out in app stores. Developers may need to invest more time and resources into creating engaging and high-quality hybrid-casual games.
Despite these challenges, the future of hybrid-casual games appears promising, with ample opportunities for developers to create captivating gaming experiences that cater to an expanding audience. To learn more about hybrid-casual games and their development, consider checking out resources like [GameAnalytics](https://gameanalytics.com/blog/hybrid-casual-higher-retention-better-engagement/), [VentureBeat](https://venturebeat.com/games/hypercasual-games-are-shrinking-while-hybrid-casual-is-on-the-rise-liftoff/), and [Juego Studio](https://www.juegostudio.com/blog/how-hype-casual-successfully-evolve-into-hybrid-casual-games). Also, don't forget to check out [PubNub's documentation](https://www.pubnub.com/docs) for more insights into game development.
PubNub is an agnostic programming language that provides game developers with a scalable, secure, and [feature-rich platform](https://www.pubnub.com/products/pubnub-platform/#overview) to build real-time features into their games. Offering solutions for [gaming](https://www.pubnub.com/solutions/gaming/), [data streaming](https://www.pubnub.com/solutions/data-streaming/), and [multi-user collaboration](https://www.pubnub.com/solutions/multiuser-collaboration/), PubNub is the perfect platform for developing engaging gaming experiences. With our infrastructure, APIs, [SDKs](https://www.pubnub.com/docs/sdks), and a comprehensive library of [Unity tutorials](https://www.pubnub.com/guides/unity/) at your disposal, developers can focus their attention on creating innovative and engaging user experiences. PubNub handles the complexities of real-time communication, enabling you to concentrate on the core mechanics and game design that engages gamers and enhances retention rates.
Our platform can be utilized to develop engaging multiplayer experiences in hyper-casual games and hybrid-casual games. It facilitates features like real-time leaderboards, instant messaging, and live multiplayer gameplay, adding a layer of engagement and competitiveness to the gaming experience. For instance, PubNub's Presence API, explained more in our [documentation](https://www.pubnub.com/docs/general/resources/design-pattern-friend-list-status-feeds), can be used to track online users and create interactive gaming experiences in the gaming industry.
Emerging technologies like blockchain, NFTs, and AI-generated content are set to influence the future of the hybrid-casual games market. PubNub’s real-time features and APIs can help game developers leverage these technologies to innovate and differentiate their games. With our [blockchain solutions](https://www.pubnub.com/solutions/blockchain-web3/), developers can create unique and engaging gaming experiences that stand out in the competitive app market.
Visit our [Github](https://github.com/pubnub) or [sign up for a free trial](https://admin.pubnub.com/#/register) to get started. Our current offering includes up to 200 MAUs or 1M monthly transactions for free. Make sure you also check out our latest [Unity tutorials](https://www.pubnub.com/guides/unity/) and [SDKs](https://www.pubnub.com/docs/sdks) for the most recent updates and functionalities.
Whether you're working on casual game development or mobile game development, PubNub is your reliable partner to navigate the evolving games market and optimize the gameplay experience for your target audience. Check out our [enterprise software solutions](https://www.pubnub.com/solutions/enterprise-software/) to learn more about how we can help you succeed in the gaming industry.
How can PubNub help you?
========================
This article was originally published on [PubNub.com](https://www.pubnub.com/blog/the-growing-popularity-of-hybrid-casual-games/)
Our platform helps developers build, deliver, and manage real-time interactivity for web apps, mobile apps, and IoT devices.
The foundation of our platform is the industry's largest and most scalable real-time edge messaging network. With over 15 points-of-presence worldwide supporting 800 million monthly active users, and 99.999% reliability, you'll never have to worry about outages, concurrency limits, or any latency issues caused by traffic spikes.
Experience PubNub
-----------------
Check out [Live Tour](https://www.pubnub.com/tour/introduction/) to understand the essential concepts behind every PubNub-powered app in less than 5 minutes
Get Setup
---------
Sign up for a [PubNub account](https://admin.pubnub.com/signup/) for immediate access to PubNub keys for free
Get Started
-----------
The [PubNub docs](https://www.pubnub.com/docs) will get you up and running, regardless of your use case or [SDK](https://www.pubnub.com/docs) | pubnubdevrel | |
1,751,637 | Using video API s to handle videos in python | Hey Forum Crew, Just wanted to drop a quick note to share the buzz – we've hooked up with... | 0 | 2024-02-04T23:12:59 | https://dev.to/smartdeveloper72/using-video-apis-to-handle-videos-in-python-ck5 | Hey Forum Crew,
Just wanted to drop a quick note to share the buzz – we've hooked up with Cloudinary's API, and things are getting wild around here! 🤘
Why Cloudinary, You Ask?
1. Media Uploads Made Easy:
Uploading media with Cloudinary is like slicing through butter with a hot knife. It's smooth, it's easy, and it just works. No more media upload headaches!
2. Video Transformations on the Fly:
We're turning into magicians here. Cloudinary's Video API lets us twist and turn videos like origami. Dynamic transformations mean your videos look awesome, no matter what device you're on.
3. Lightning-Fast Image Delivery:
Fasten your seatbelts – Cloudinary optimizes images so they load faster than a cat GIF. It's like giving your site a turbo boost without compromising on picture perfection.
4. It Grows with Us:
Cloudinary is like that friend who's always there for you, no matter what. As we grow, it scales effortlessly. Rock-solid reliability, baby!
5. Code Integration for Dummies:
We're devs, not magicians (well, maybe a bit). Cloudinary's Python SDK makes integration so simple, even your coffee mug could do it. More time for cool features, less time wrestling with code.
This isn't just about code – it's about making our platform kick more butt, giving you a smoother experience, and staying ahead of the tech curve. Dive in, play around, and let us know what you think!
Got questions or just want to shoot the breeze about code and cool tech? Jump into the discussion!
Sign Up for Cloudinary:
If you don't have a Cloudinary account, sign up for one here.
Get API Key and API Secret:
After signing up, go to the dashboard to get your API key and API secret.
Install Cloudinary Python SDK:
Install the Cloudinary Python SDK using pip:
`pip install cloudinary
`
Configure Cloudinary in Your Python Script:
Import the Cloudinary module and configure it with your API key and secret.
```
import cloudinary
import cloudinary.uploader
import cloudinary.api
cloudinary.config(
cloud_name="your_cloud_name",
api_key="your_api_key",
api_secret="your_api_secret"
)
```
Upload a Video:
Use the cloudinary.uploader.upload method to upload a video file. Replace "path/to/your/video.mp4" with the path to your video file.
```
upload_result = cloudinary.uploader.upload("path/to/your/video.mp4", resource_type="video")
print(upload_result)
```
Manipulate Video:
Cloudinary allows you to perform various transformations on your videos. For example, you can resize, trim, add effects, etc. Here's an example of resizing a video:
```
transformed_url = cloudinary.CloudinaryVideo("your_public_id").video(transformation=[
{"width": 640, "height": 360, "crop": "fill"}
])
print(transformed_url)
```
Additional Features:
Explore Cloudinary's official documentation ([video API](https://cloudinary.com/video_api)) for more features and options.
Error Handling:
Make sure to handle errors appropriately in your code. Cloudinary may return errors, and it's essential to handle them gracefully.
Here's a simple script combining the above steps:
```
import cloudinary
import cloudinary.uploader
import cloudinary.api
cloudinary.config(
cloud_name="your_cloud_name",
api_key="your_api_key",
api_secret="your_api_secret"
)
# Upload a video
upload_result = cloudinary.uploader.upload("path/to/your/video.mp4", resource_type="video")
print(upload_result)
# Manipulate the uploaded video
transformed_url = cloudinary.CloudinaryVideo(upload_result['public_id']).video(
transformation=[{"width": 640, "height": 360, "crop": "fill"}]
)
print(transformed_url)
```
| smartdeveloper72 | |
1,751,794 | Augusta Precious Metals Reviews - "Best Overall" Gold IRA | Augusta Precious Metals is the most trusted gold IRA company in the United States. Augusta Precious... | 0 | 2024-02-05T05:31:49 | https://dev.to/jennyjohn009/augusta-precious-metals-reviews-best-overall-gold-ira-1bj1 | gold, ira, goldira, retirement | Augusta Precious Metals is the most trusted gold IRA company in the United States.
[Augusta Precious Metals](https://learn.augustapreciousmetals.com/company-checklist-1/?apmtrkr_cid=1696&aff_id=600&sub_id=devcommunity) is a gold IRA company at the heart of the precious metals industry. It empowers investors to explore the world of precious metals such as gold and silver.
Isaac Nuriani founded Augusta Precious Metals in 2012. The company has been recognized for its integrity and trust. Augusta Precious Metals, a leader in the precious metals IRA industry and for individuals looking to purchase gold and silver has become a beacon of excellence.
Augusta is unique in its commitment to transparency and educational programs. A Harvard-trained economist on staff is available to the public for a Web conference. This conference provides valuable insights into precious metals investments. Augusta is also a protector for the industry, helping consumers avoid common pitfalls. The company provides educational videos, such as " 10 Big Gold Dealer Lies" and " 15 Bad Reasons to Buy Gold", in order to help customers make informed decisions.
**What makes Augusta stand out?
**Augusta Precious Metals is proud of several things that make it stand out from its competitors. We'll explore the features that set Augusta apart in the precious metals sector.
Commitment towards customer support: Augusta Precious Metals offers lifetime support and guidance to its clients. Augusta's team of professionals is dedicated to helping you make informed investment decisions.
Augusta Precious Metals puts a strong emphasis on education. Augusta Precious Metals strives to provide its customers with the information and insight they need to successfully navigate the world of precious metals. Augusta empowers its investors by providing them with valuable resources and educational material.
Reputation and accreditations are outstanding: Augusta Precious Metals' 4.95-star rating out of 930 reviews, and A+ rating with the Better Business Bureau has helped it earn the respect and trust of its customers. Expertise, high-quality products and outstanding customer service have helped the company establish itself as an industry leader.
**Augusta Precious Metals Phone Number: 844-917-2904**
[Augusta Official Website
](https://learn.augustapreciousmetals.com/company-checklist-1/?apmtrkr_cid=1696&aff_id=600&sub_id=devcommunity)
A unique, free, one-on-one, educational web conference created by Augusta’s Harvard-trained economist on staff (A must attend).
[Augusta Free Educational Guide to Gold IRA HERE
](https://learn.augustapreciousmetals.com/company-checklist-1/?apmtrkr_cid=1696&aff_id=600&sub_id=devcommunity)
**Buy Back Gold:**
Augusta Precious Metals also offers a gold-buyback program. Customers can sell precious metals to Augusta and receive liquidity. The buyback program provides investors with an exit strategy in case they need to.
**Augusta Precious Metals: Is it safe and secure?
**
Safety and security is paramount when it comes to investing the money you've worked so hard for. Augusta Precious Metals puts its clients' investment security first by implementing robust measures such as industry-standard security protocol and secure storage facilities. Augusta partners with trusted depositories and custodians to ensure that precious metals held by Augusta are stored in a safe environment. This protects your wealth. | jennyjohn009 |
1,751,803 | Native And Cross-Platform Apps: Which Is Best? | Smartphones have become widespread in less than a decade. In the form of applications, they... | 0 | 2024-02-05T05:50:21 | https://dev.to/birdmorning/native-and-cross-platform-apps-which-is-best-gha | native, crossplatform, bestapp, webdev | Smartphones have become widespread in less than a decade. In the form of applications, they facilitate communication by texting and phoning, provide entertainment, enable administration, and provide utilities to their customers.
With improved software development kits, programming languages, and excellent mobile phones, the global mobile application market is expanding.
One of the most important considerations you must make when developing a mobile app is whether to employ native or cross-platform mobile development. In this post, we'll look at both possibilities and consider which works the best.
An overview of native vs. a cross-platform app development
Let's start with an overview of native and cross-platform apps.
Native applications:
Native mobile apps are built to work on either Android or iOS. Your apps are frequently written in a programming language specific to the operating system you are developing for. Android apps can be written in Kotlin, whereas iOS apps can be written in Objective-C or Swift.
Examples of well-known native mobile applications include Google Maps, Pinterest, Spotify, and WhatsApp.
Pros:
- Native features enable applications to provide better speed and user experience.
- Access to native APIs enables the integration of hardware sensors like Bluetooth, GPS, NFC, and so on.
- A specialized app store for distribution aids in increased awareness. Because of the native design language, visual upgrades are improved.
- Businesses can operate in areas with limited internet availability thanks to offline capability.
Cons:
- Due to the longer time needed for the separate coding of two apps, time-to-market increased.
- High maintenance expenditures because two apps must be maintained independently.
- Increased development expenses as a result of variances in settings, programming languages, and so on.
Cross-platform applications:
Cross-platform app development aims to target many operating systems with a single project. To design cross-platform mobile applications, you employ a single codebase. These apps are built with cross-platform frameworks that utilize platform-specific SDKs from a single API. This enables rapid access to the various platform SDKs and libraries.
Pros:
- Reduced time to market because the program just needs to be coded once.
- Lower app development costs because you don't need distinct programs for each OS.
- Platform-independent source code offers greater flexibility and faster modifications.
- Because of shared source code, apps are simple to maintain and upgrade.
Cons:
-Performance difficulties as a result of a lack of hardware sensor integration support.
-The cascade effect occurs when a single problem disrupts service across many platforms.
-Inadequate user experience as a result of a lack of native UI upgrades
Which is better: native or cross-platform apps?
Let's have a look at some factors to consider while deciding which development approach to adopt.
Time to market
This is a prevalent concern for new product lines and enterprises. To begin obtaining valuable customer input, the product must be shipped as soon as possible. Cross-platform mobile app development in this case since it is straightforward to design and iterate. Native mobile development would take longer to complete and eventually result in a long time to market.
Security
You must consider the company's reputation as well as the consequences of losing users' faith. Certain types of mobile applications might pose significant hazards. In these cases, native mobile development is the superior option. It includes various built-in security features, such as file encryption and intelligent fraud detection through the use of particular OS libraries. Native apps offer higher security, reliability, and scalability.
Performance
Native mobile development is frequently the greatest choice for apps like games app that require enhanced performance. You may ensure that your application operates as efficiently as possible by optimizing performance for a given operating system.
Costs of development
Some businesses have more funds for developing mobile apps than others. Cross-platform apps are ideal for low-budget projects because they require a small crew. Furthermore, cross-platform development allows you to save money by reusing code and projects.
Final words:
To develop a successful, stable, and well-received mobile application, you must first decide which operating system — or systems — your app will be compatible with. Whether your users are using Android or iOS, you must design your application with security, performance, and scalability in mind. | birdmorning |
1,751,804 | Error Handling in Rust: A Robust Guide with Practical Examples | In Rust, effective error handling is crucial for building reliable and maintainable applications.... | 0 | 2024-02-05T05:53:30 | https://dev.to/mbayoun95/error-handling-in-rust-a-robust-guide-with-practical-examples-9ch | rust, errors | In Rust, effective error handling is crucial for building reliable and maintainable applications. Unlike languages with garbage collection, Rust enforces ownership and memory safety, requiring explicit handling of potential errors that could arise during program execution.
**Key Concepts:**
* **`Result`**: The primary type for representing success (with a value of type `T`) or error (with a value of type `E`).
* **`match`**: A powerful expression for handling different cases, including success and error variants of `Result`.
* **`?` (question mark) operator**: Propagates errors up the call stack, simplifying error handling flow.
* **Custom Error Types**: Define your own error types to provide more meaningful context and error handling options.
**Example: File Processing:**
```rust
use std::fs::File;
use std::io::Read;
fn read_file(filename: &str) -> Result<String, std::io::Error> {
let mut file = File::open(filename)?;
let mut contents = String::new();
file.read_to_string(&mut contents)?;
Ok(contents)
}
fn main() {
let result = read_file("existing_file.txt");
match result {
Ok(contents) => println!("File contents: {}", contents),
Err(err) => println!("Error reading file: {}", err),
}
}
```
- `read_file` returns a `Result<String, std::io::Error>` to indicate either success with a string or failure with an `io::Error`.
- `?` propagates errors up the call stack, returning early from `main` if `read_file` fails.
- `match` handles both success and error cases appropriately.
**Advanced Practices:**
* **Chaining Operations:** Use `?` to chain operations and propagate errors efficiently.
* **Custom Errors:** Define specific error types for better error handling granularity.
* **Error Recovery:** Implement logic to recover from certain errors if possible.
* **Error Propagation Control:** Decide when to handle errors locally or propagate them further.
* **Testing:** Rigorously test error handling scenarios to ensure robustness.
**Benefits of Effective Error Handling:**
* **Increased Reliability:** Prevents unexpected crashes and ensures program stability.
* **Improved Maintainability:** Makes code easier to understand and debug.
* **Enhanced User Experience:** Provides informative error messages to users.
* **Stronger Security:** Detects and handles potential security vulnerabilities.
Remember, error handling is not just about preventing crashes; it's about designing programs that can gracefully handle any situation, offering informative feedback to users and making your code more resilient and user-friendly. | mbayoun95 |
1,751,847 | Seamless Synergy: Blockchain and IoT Integration for Unprecedented Enterprise Efficiency | In the dynamic landscape of technological innovation, the convergence of enterprise blockchain and... | 0 | 2024-02-05T06:40:59 | https://dev.to/sim_chanda/seamless-synergy-blockchain-and-iot-integration-for-unprecedented-enterprise-efficiency-45cd | marketinsights, markettrends, marketgrowth |
In the dynamic landscape of technological innovation, the convergence of enterprise blockchain and the Internet of Things (IoT) emerges as a transformative force, promising unparalleled efficiency for enterprises. This powerful alliance between decentralized ledger technology and interconnected devices is reshaping the way businesses manage assets, conduct transactions, and ensure the security of their operations. In this comprehensive exploration, we delve deeper into the synergy between Blockchain and IoT, uncovering the multifaceted benefits and potential challenges that come with this integration.
**Understanding the Foundations:** Blockchain and IoT
To appreciate the impact of Blockchain and IoT integration, it's essential to grasp the fundamentals of each technology. Blockchain, originally designed to support cryptocurrencies, is a decentralized and distributed ledger. It introduces transparency, immutability, and enhanced security to data transactions. On the other hand, the Internet of Things encompasses a vast network of interconnected devices and sensors that collect and exchange real-time data.
When these technologies converge, a robust framework is created for tracking, securing, and optimizing various enterprise processes.
**Enhancing Security with Immutable Ledgers**
In an era where data breaches and cyber threats loom large, security is a paramount concern for enterprises. Traditional centralized systems are susceptible to hacking and unauthorized access. The decentralized nature of Blockchain ensures that data is stored across a network of nodes, making it practically immune to tampering.
In the context of IoT, where devices constantly generate and transmit sensitive data, the immutability of the Blockchain serves as a shield against unauthorized alterations. This not only fortifies the security of enterprise data but also establishes a foundation of trust among stakeholders.
**Request for a Sample PDF:** https://www.nextmsc.com/enterprise-blockchain-market/request-sample
**Real-Time Data Visibility and Transparency**
IoT devices generate a continuous stream of real-time data. Integrating Blockchain allows enterprises to create a transparent and auditable record of every transaction or event in the IoT network. The transparency provided by Blockchain not only builds trust within the ecosystem but also facilitates compliance with regulatory requirements.
Stakeholders can access a tamper-proof history of data, enabling them to trace the journey of assets or information from inception to the present moment. This real-time visibility into data transactions enhances decision-making processes and facilitates a more proactive approach to problem-solving.
**Smart Contracts Automating Processes**
Smart contracts, a hallmark feature of Blockchain, bring a new dimension to automation in an IoT environment. These self-executing contracts, with the terms of the agreement directly embedded in code, facilitate seamless automation triggered by IoT data.
Consider a scenario where IoT sensors detect a potential issue with a machine. With smart contracts in place, a maintenance request could be automatically initiated without human intervention. This not only streamlines operational workflows but also reduces downtime, as responses to critical events can be executed in real time.
**Supply Chain Optimization and Traceability**
The integration of Blockchain and IoT holds particular promise in the realm of supply chain management. Enterprises can leverage IoT devices to monitor the movement and conditions of goods in real-time. Meanwhile, Blockchain ensures the integrity and traceability of this data.
In a globalized supply chain, where goods traverse diverse geographical locations, the combination of Blockchain and IoT provides an unbroken chain of custody. This transparency reduces the likelihood of fraud, errors, and inefficiencies, offering a real-time view of the supply chain's health.
**Challenges and Considerations**
While the potential benefits of Blockchain and IoT integration are immense, it is essential to acknowledge and address the challenges that come with this synergy.
Scalability: As the volume of IoT devices and data transactions increases, the scalability of Blockchain networks becomes a critical consideration. Ensuring that the system can handle the growing demands of a dynamic IoT ecosystem is imperative.
Interoperability: The compatibility of diverse IoT devices and Blockchain platforms is a challenge that requires careful consideration. Achieving seamless interoperability is essential for the effective functioning of integrated systems.
Energy Consumption: Certain Blockchain networks, especially those utilizing Proof of Work (PoW) consensus mechanisms, can be energy-intensive. Balancing the benefits of security with the environmental impact is a consideration that enterprises must weigh.
Data Privacy and Compliance: Enterprises operating in highly regulated industries must navigate the complexities of ensuring data privacy and compliance with regulations. Striking a balance between transparency and regulatory adherence is crucial.
**The Road Ahead: Unlocking New Possibilities**
As enterprises continue to explore the integration of Blockchain and IoT, the road ahead is filled with exciting possibilities. The synergies between these technologies are not confined to a single industry; they permeate various sectors, promising to reshape how businesses operate in the digital age.
**1. Healthcare:**
In the healthcare sector, the integration of Blockchain and IoT holds the potential to revolutionize patient care. Real-time monitoring of patient vitals through IoT devices, coupled with the secure and transparent storage of medical records on the Blockchain, can enhance diagnostic accuracy and streamline healthcare delivery.
**2. Manufacturing:**
In manufacturing, the combination of Blockchain and IoT can optimize production processes. IoT sensors on machinery can provide real-time data, while Blockchain ensures the integrity of production records. This synergy leads to improved efficiency, reduced downtime, and enhanced quality control.
**3. Agriculture:**
The agriculture industry can benefit from Blockchain and IoT integration by optimizing resource management. IoT devices can monitor soil conditions and crop health, while Blockchain ensures transparency in the supply chain. This can lead to more sustainable agricultural practices and better traceability of food products.
**4. Energy:**
In the energy sector, IoT sensors on smart grids can provide real-time data on energy consumption, and Blockchain can facilitate transparent and secure energy transactions. This integration can lead to more efficient energy distribution and greater accountability in the energy supply chain.
**Inquire Before Buying:** https://www.nextmsc.com/enterprise-blockchain-market/inquire-before-buying
**Conclusion:**
The Era of Unprecedented Enterprise Efficiency
In conclusion, the integration of Blockchain and IoT is not merely a technological advancement; it is a strategic move towards a more efficient, secure, and transparent future for enterprises. As businesses increasingly recognize the potential of this powerful synergy, we can expect to witness a paradigm shift in how data is managed, transactions are conducted, and operations are streamlined across various industries.
The journey has just begun, and the era of unprecedented enterprise efficiency is on the horizon. As enterprises navigate the challenges and capitalize on the opportunities presented by the convergence of Blockchain and IoT, they position themselves at the forefront of a digital transformation that will define the future of business. The synergy between these technologies is a beacon guiding enterprises toward a new era of innovation, resilience, and unparalleled efficiency.
| sim_chanda |
1,751,862 | Record and Pattern Matching in C# 9 | C# 9, the latest version of the widely-used programming language, introduces powerful new features... | 0 | 2024-02-05T07:15:09 | https://dev.to/homolibere/record-and-pattern-matching-in-c-9-3n0e | csharp | C# 9, the latest version of the widely-used programming language, introduces powerful new features that can greatly simplify your code and make it more expressive. Two of the most exciting additions are C# Record and Pattern Matching.
C# Record is a new reference type that provides a concise and immutable way of declaring classes. It combines the benefits of classes and structs, offering built-in equality, immutability, and value-based equality semantics. With Records, you no longer need to write boilerplate code for equality checks. The compiler generates it for you, making your code cleaner and more maintainable.
To define a record in C# 9, you simply use the `record` keyword followed by the name of the record and its properties. Here's an example that defines a `Person` record with `Name` and `Age` properties:
```csharp
public record Person(string Name, int Age);
```
With this small amount of code, you automatically get features such as value-based equality, value-based comparison, pattern matching, and deconstructing. The generated equality and comparison methods compare all properties by default, making it easy to check if two instances of a record are equal.
Pattern Matching is another powerful feature introduced in C# 9 that allows you to perform complex pattern-based operations on your data. It simplifies conditional checks and enables you to extract data from objects in a more concise and readable way.
An example of pattern matching is using the `is` keyword to check if an object matches a particular pattern. Let's say you have a list of people, and you want to find all the adults:
```csharp
List<Person> people = GetPeople();
foreach (var person in people)
{
if (person is Person { Age: >= 18 })
{
Console.WriteLine($"{person.Name} is an adult");
}
}
```
In this code snippet, we iterate over the list of `People` and use pattern matching to check if each person is an adult (age greater than or equal to 18). We can access the `Age` property directly within the pattern, simplifying the code and making it more readable.
Pattern matching also works well with records. You can easily check if two records have the same values for certain properties:
```csharp
Person person1 = new Person("John", 25);
Person person2 = new Person("John", 25);
if (person1 is person2)
{
Console.WriteLine("person1 and person2 have the same values");
}
```
In this example, the `is` pattern matches `person2` against `person1`, allowing us to determine if both records have the same values for all properties.
C# 9's Record and Pattern Matching features provide a powerful combination for simplifying and enhancing your code. They offer concise syntax, improved readability, and reduced boilerplate code. By using these features, you can write cleaner and more maintainable code, saving time and effort in the long run. So, dive into C# 9 and start taking advantage of these exciting new features in your projects! | homolibere |
1,751,941 | TW Elements - Containers. Free UI/UX design course. | Containers If you've used Bootstrap before, you probably remember that there containers are... | 25,935 | 2024-02-05T11:00:00 | https://dev.to/keepcoding/tw-elements-containers-free-uiux-design-course-gmd | webdev, javascript, tailwindcss, tutorial | **Containers**
If you've used Bootstrap before, you probably remember that there containers are necessary for the proper functioning of the grid system.
So it can be a bit confusing that in Tailwind containers don't have such an important function, and grid can do just fine without them.
However, this does not mean that containers are useless in Tailwind. Quite the opposite. But they just play a different role.
Let's have a look at them.
**How does a container work in Tailwind CSS?**
In Tailwind we use containers to set a maximum width for a content we want to place inside of the container.
In other words - we use containers so that a given element / content placed in this container does not extend to the full width of the screen.
Have a look at the example below.
Let's add a long text paragraph to the _main_ section of our project. In addition, let's add the .bg-red-200 class to it to be able to clearly see how wide this paragraph extends.
```
<!--Main layout-->
<main>
<p class="bg-red-200">
Lorem ipsum dolor sit amet consectetur adipisicing elit. Corporis
blanditiis aspernatur vel. Similique illum labore eaque tempora
accusamus unde eius sint ad voluptate, autem facilis incidunt harum
corporis facere, sapiente consectetur? Suscipit molestiae, expedita,
sunt, corrupti hic dignissimos nesciunt ipsum voluptates dolorem soluta
ut architecto sapiente ratione quidem iure facilis ab dolore incidunt
quia? Quidem enim accusamus sapiente sed molestias neque assumenda,
obcaecati natus. Dolor iure necessitatibus, cupiditate minima nesciunt
tenetur animi sint debitis aliquid facere aliquam hic nemo odio
repellendus aspernatur voluptates id at libero voluptas inventore
doloribus eveniet magni sunt. Eveniet, dolorem distinctio. Quibusdam
libero ipsam alias est iste nisi voluptas vitae, natus voluptate
obcaecati tempora id labore!
</p>
</main>
<!--Main layout--
```
The paragraph will span the full width of the page. This is often not a desirable situation, which is why we have containers at our disposal.
So what happens if we add an element with class .container to the project and put our paragraph in it?
```
<!--Main layout-->
<main>
<div class="container">
<p class="bg-red-200">
Lorem ipsum dolor sit amet consectetur adipisicing elit. Corporis
blanditiis aspernatur vel. Similique illum labore eaque tempora
accusamus unde eius sint ad voluptate, autem facilis incidunt harum
corporis facere, sapiente consectetur? Suscipit molestiae, expedita,
sunt, corrupti hic dignissimos nesciunt ipsum voluptates dolorem
soluta ut architecto sapiente ratione quidem iure facilis ab dolore
incidunt quia? Quidem enim accusamus sapiente sed molestias neque
assumenda, obcaecati natus. Dolor iure necessitatibus, cupiditate
minima nesciunt tenetur animi sint debitis aliquid facere aliquam hic
nemo odio repellendus aspernatur voluptates id at libero voluptas
inventore doloribus eveniet magni sunt. Eveniet, dolorem distinctio.
Quibusdam libero ipsam alias est iste nisi voluptas vitae, natus
voluptate obcaecati tempora id labore!
</p>
</div>
</main>
<!--Main layout-->
```
Well, actually the paragraph won't be full-width anymore, but that's not quite what we wanted. A strange-looking gap appeared on the right side.
This is because, unlike, for example containers in Bootstrap, _containers in Tailwind do not auto-center_.
To get the centering effect, we need to add the .mx-auto class to the .container, which will divide the left and right margins of the .container equally.
```
<!--Main layout-->
<main>
<div class="container mx-auto">
<p class="bg-red-200">
Lorem ipsum dolor sit amet consectetur adipisicing elit. Corporis
blanditiis aspernatur vel. Similique illum labore eaque tempora
accusamus unde eius sint ad voluptate, autem facilis incidunt harum
corporis facere, sapiente consectetur? Suscipit molestiae, expedita,
sunt, corrupti hic dignissimos nesciunt ipsum voluptates dolorem
soluta ut architecto sapiente ratione quidem iure facilis ab dolore
incidunt quia? Quidem enim accusamus sapiente sed molestias neque
assumenda, obcaecati natus. Dolor iure necessitatibus, cupiditate
minima nesciunt tenetur animi sint debitis aliquid facere aliquam hic
nemo odio repellendus aspernatur voluptates id at libero voluptas
inventore doloribus eveniet magni sunt. Eveniet, dolorem distinctio.
Quibusdam libero ipsam alias est iste nisi voluptas vitae, natus
voluptate obcaecati tempora id labore!
</p>
</div>
</main>
<!--Main layout-->
```
And now, by dividing the left and right margins equally (thanks to .mx-auto class), our container has been centered.
Alright, now that we know how containers work, let's use them for something practical.
But first, let's remove this sample container paragraph from the _main_ section, as it was for demonstration purposes only.
```
<!--Main layout-->
<main></main>
<!--Main layout-->
```
**Add container to the Navbar**
Currently, the elements in our Navbar are stretched to full width and touch the left and right edges of the browser window.
It would be nice if we could give them some space on the sides and center them.
This is the perfect opportunity to make use of the container.
Inside of the _nav_ element, find the _div_ element that is its direct child. There will already be a few other classes there, but that's okay.
Add .container and .mx-auto classes there:
```
<!-- Navbar -->
<nav
class="flex-no-wrap relative flex w-full items-center justify-between bg-neutral-100 py-2 shadow-md shadow-black/5 dark:bg-neutral-600 dark:shadow-black/10 lg:flex-wrap lg:justify-start lg:py-4"
data-te-navbar-ref>
<!-- Here add a container -->
<div
class="container mx-auto flex w-full flex-wrap items-center justify-between px-3">
<!-- Hamburger button for mobile view -->
<button
class="block border-0 bg-transparent px-2 text-neutral-500 hover:no-underline hover:shadow-none focus:no-underline focus:shadow-none focus:outline-none focus:ring-0 dark:text-neutral-200 lg:hidden"
type="button"
data-te-collapse-init
data-te-target="#navbarSupportedContent1"
aria-controls="navbarSupportedContent1"
aria-expanded="false"
aria-label="Toggle navigation">
<!-- Hamburger icon -->
<span class="[&>svg]:w-7">
<svg
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 24 24"
fill="currentColor"
class="h-7 w-7">
<path
fill-rule="evenodd"
d="M3 6.75A.75.75 0 013.75 6h16.5a.75.75 0 010 1.5H3.75A.75.75 0 013 6.75zM3 12a.75.75 0 01.75-.75h16.5a.75.75 0 010 1.5H3.75A.75.75 0 013 12zm0 5.25a.75.75 0 01.75-.75h16.5a.75.75 0 010 1.5H3.75a.75.75 0 01-.75-.75z"
clip-rule="evenodd" />
</svg>
</span>
</button>
<!-- Collapsible navigation container -->
<div
class="!visible hidden flex-grow basis-[100%] items-center lg:!flex lg:basis-auto"
id="navbarSupportedContent1"
data-te-collapse-item>
<!-- Logo -->
<a
class="mb-4 mr-2 mt-3 flex items-center text-neutral-900 hover:text-neutral-900 focus:text-neutral-900 dark:text-neutral-200 dark:hover:text-neutral-400 dark:focus:text-neutral-400 lg:mb-0 lg:mt-0"
href="#">
<img
src="https://tecdn.b-cdn.net/img/logo/te-transparent-noshadows.webp"
style="height: 15px"
alt=""
loading="lazy" />
</a>
<!-- Left navigation links -->
<ul
class="list-style-none mr-auto flex flex-col pl-0 lg:flex-row"
data-te-navbar-nav-ref>
<li class="mb-4 lg:mb-0 lg:pr-2" data-te-nav-item-ref>
<!-- Dashboard link -->
<a
class="text-neutral-500 hover:text-neutral-700 focus:text-neutral-700 disabled:text-black/30 dark:text-neutral-200 dark:hover:text-neutral-300 dark:focus:text-neutral-300 lg:px-2 [&.active]:text-black/90 dark:[&.active]:text-zinc-400"
href="#"
data-te-nav-link-ref
>Dashboard</a
>
</li>
<!-- Team link -->
<li class="mb-4 lg:mb-0 lg:pr-2" data-te-nav-item-ref>
<a
class="text-neutral-500 hover:text-neutral-700 focus:text-neutral-700 disabled:text-black/30 dark:text-neutral-200 dark:hover:text-neutral-300 dark:focus:text-neutral-300 lg:px-2 [&.active]:text-black/90 dark:[&.active]:text-neutral-400"
href="#"
data-te-nav-link-ref
>Team</a
>
</li>
<!-- Projects link -->
<li class="mb-4 lg:mb-0 lg:pr-2" data-te-nav-item-ref>
<a
class="text-neutral-500 hover:text-neutral-700 focus:text-neutral-700 disabled:text-black/30 dark:text-neutral-200 dark:hover:text-neutral-300 dark:focus:text-neutral-300 lg:px-2 [&.active]:text-black/90 dark:[&.active]:text-neutral-400"
href="#"
data-te-nav-link-ref
>Projects</a
>
</li>
</ul>
</div>
<!-- Right elements -->
<div class="relative flex items-center">
<!-- Cart Icon -->
<a
class="mr-4 text-neutral-500 hover:text-neutral-700 focus:text-neutral-700 disabled:text-black/30 dark:text-neutral-200 dark:hover:text-neutral-300 dark:focus:text-neutral-300 [&.active]:text-black/90 dark:[&.active]:text-neutral-400"
href="#">
<span class="[&>svg]:w-5">
<svg
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 24 24"
fill="currentColor"
class="h-5 w-5">
<path
d="M2.25 2.25a.75.75 0 000 1.5h1.386c.17 0 .318.114.362.278l2.558 9.592a3.752 3.752 0 00-2.806 3.63c0 .414.336.75.75.75h15.75a.75.75 0 000-1.5H5.378A2.25 2.25 0 017.5 15h11.218a.75.75 0 00.674-.421 60.358 60.358 0 002.96-7.228.75.75 0 00-.525-.965A60.864 60.864 0 005.68 4.509l-.232-.867A1.875 1.875 0 003.636 2.25H2.25zM3.75 20.25a1.5 1.5 0 113 0 1.5 1.5 0 01-3 0zM16.5 20.25a1.5 1.5 0 113 0 1.5 1.5 0 01-3 0z" />
</svg>
</span>
</a>
<!-- Container with two dropdown menus -->
<div class="relative" data-te-dropdown-ref>
<!-- First dropdown trigger -->
<a
class="hidden-arrow mr-4 flex items-center text-neutral-500 hover:text-neutral-700 focus:text-neutral-700 disabled:text-black/30 dark:text-neutral-200 dark:hover:text-neutral-300 dark:focus:text-neutral-300 [&.active]:text-black/90 dark:[&.active]:text-neutral-400"
href="#"
id="dropdownMenuButton1"
role="button"
data-te-dropdown-toggle-ref
aria-expanded="false">
<!-- Dropdown trigger icon -->
<span class="[&>svg]:w-5">
<svg
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 24 24"
fill="currentColor"
class="h-5 w-5">
<path
fill-rule="evenodd"
d="M5.25 9a6.75 6.75 0 0113.5 0v.75c0 2.123.8 4.057 2.118 5.52a.75.75 0 01-.297 1.206c-1.544.57-3.16.99-4.831 1.243a3.75 3.75 0 11-7.48 0 24.585 24.585 0 01-4.831-1.244.75.75 0 01-.298-1.205A8.217 8.217 0 005.25 9.75V9zm4.502 8.9a2.25 2.25 0 104.496 0 25.057 25.057 0 01-4.496 0z"
clip-rule="evenodd" />
</svg>
</span>
<!-- Notification counter -->
<span
class="absolute -mt-2.5 ml-2 rounded-[0.37rem] bg-danger px-[0.45em] py-[0.2em] text-[0.6rem] leading-none text-white"
>1</span
>
</a>
<!-- First dropdown menu -->
<ul
class="absolute left-auto right-0 z-[1000] float-left m-0 mt-1 hidden min-w-max list-none overflow-hidden rounded-lg border-none bg-white bg-clip-padding text-left text-base shadow-lg dark:bg-neutral-700 [&[data-te-dropdown-show]]:block"
aria-labelledby="dropdownMenuButton1"
data-te-dropdown-menu-ref>
<!-- First dropdown menu items -->
<li>
<a
class="block w-full whitespace-nowrap bg-transparent px-4 py-2 text-sm font-normal text-neutral-700 hover:bg-neutral-100 active:text-neutral-800 active:no-underline disabled:pointer-events-none disabled:bg-transparent disabled:text-neutral-400 dark:text-neutral-200 dark:hover:bg-white/30"
href="#"
data-te-dropdown-item-ref
>Action</a
>
</li>
<li>
<a
class="block w-full whitespace-nowrap bg-transparent px-4 py-2 text-sm font-normal text-neutral-700 hover:bg-neutral-100 active:text-neutral-800 active:no-underline disabled:pointer-events-none disabled:bg-transparent disabled:text-neutral-400 dark:text-neutral-200 dark:hover:bg-white/30"
href="#"
data-te-dropdown-item-ref
>Another action</a
>
</li>
<li>
<a
class="block w-full whitespace-nowrap bg-transparent px-4 py-2 text-sm font-normal text-neutral-700 hover:bg-neutral-100 active:text-neutral-800 active:no-underline disabled:pointer-events-none disabled:bg-transparent disabled:text-neutral-400 dark:text-neutral-200 dark:hover:bg-white/30"
href="#"
data-te-dropdown-item-ref
>Something else here</a
>
</li>
</ul>
</div>
<!-- Second dropdown container -->
<div class="relative" data-te-dropdown-ref>
<!-- Second dropdown trigger -->
<a
class="hidden-arrow flex items-center whitespace-nowrap transition duration-150 ease-in-out motion-reduce:transition-none"
href="#"
id="dropdownMenuButton2"
role="button"
data-te-dropdown-toggle-ref
aria-expanded="false">
<!-- User avatar -->
<img
src="https://tecdn.b-cdn.net/img/new/avatars/2.jpg"
class="rounded-full"
style="height: 25px; width: 25px"
alt=""
loading="lazy" />
</a>
<!-- Second dropdown menu -->
<ul
class="absolute left-auto right-0 z-[1000] float-left m-0 mt-1 hidden min-w-max list-none overflow-hidden rounded-lg border-none bg-white bg-clip-padding text-left text-base shadow-lg dark:bg-neutral-700 [&[data-te-dropdown-show]]:block"
aria-labelledby="dropdownMenuButton2"
data-te-dropdown-menu-ref>
<!-- Second dropdown menu items -->
<li>
<a
class="block w-full whitespace-nowrap bg-transparent px-4 py-2 text-sm font-normal text-neutral-700 hover:bg-neutral-100 active:text-neutral-800 active:no-underline disabled:pointer-events-none disabled:bg-transparent disabled:text-neutral-400 dark:text-neutral-200 dark:hover:bg-white/30"
href="#"
data-te-dropdown-item-ref
>Action</a
>
</li>
<li>
<a
class="block w-full whitespace-nowrap bg-transparent px-4 py-2 text-sm font-normal text-neutral-700 hover:bg-neutral-100 active:text-neutral-800 active:no-underline disabled:pointer-events-none disabled:bg-transparent disabled:text-neutral-400 dark:text-neutral-200 dark:hover:bg-white/30"
href="#"
data-te-dropdown-item-ref
>Another action</a
>
</li>
<li>
<a
class="block w-full whitespace-nowrap bg-transparent px-4 py-2 text-sm font-normal text-neutral-700 hover:bg-neutral-100 active:text-neutral-800 active:no-underline disabled:pointer-events-none disabled:bg-transparent disabled:text-neutral-400 dark:text-neutral-200 dark:hover:bg-white/30"
href="#"
data-te-dropdown-item-ref
>Something else here</a
>
</li>
</ul>
</div>
</div>
</div>
</nav>
<!-- Navbar -->
```
And now we have proper margins on the right and left side of the Navbar.
But there is another problem - when we reduce the size of the browser window, the margins remain the same size. On the big screen it looks correct, but on the mobile view it definitely shouldn't look like this.
**Add a breakpoint to the .container**
Fortunately, it's very easy to fix. It is enough to add a breakpoint lg before the .container class (similarly as we did with the grid) and thanks to this the margins will be added only on screens above 1024px.
```
<!-- Here add a container -->
<div class="lg:container mx-auto flex w-full flex-wrap items-center justify-between px-3">
[...]
</div>
```
And now it's perfect.
**[Demo and source code for this lesson](https://tw-elements.com/snippets/tailwind/ascensus/5264677)** | keepcoding |
1,751,955 | Building a Twinkling Stars Simulation with Python | In the vast expanse of programming projects, few are as universally captivating as those that mirror... | 0 | 2024-02-05T08:58:29 | https://developer-service.blog/building-a-twinkling-stars-simulation-with-python/ | python, pygame, programming | In the vast expanse of programming projects, few are as universally captivating as those that mirror the natural beauty of our universe. Today, I'm thrilled to share a journey through the cosmos with a simple yet mesmerizing project: a Twinkling Stars Simulation created using Python. This simulation not only showcases the beauty of the night sky but also demonstrates the power of programming to replicate the wonders of the universe.
---
## Inspiration Behind the Simulation
The night sky has always been a source of inspiration, from guiding ancient navigators to sparking the curiosity of modern astronomers. The twinkling of stars (scientifically known as stellar scintillation) occurs due to the Earth's atmosphere disturbing the path of light as it travels from the star to the observer. Capturing this effect in a simulation offers a window into the dynamics of light and perception, making it a fascinating project for coders and astronomy enthusiasts.
---
## The Technology: Python and Pygame
Python, with its simplicity and readability, is the perfect language for this project. Coupled with [Pygame](https://www.pygame.org/), a set of Python modules designed for writing video games, it provides a robust framework for graphics and simulation tasks. Pygame offers the tools needed to easily create interactive applications, making it an excellent choice for our twinkling stars simulation.
If you want to learn more about Python, check out another one of my articles: [The Power of Python's Metaclasses: Understanding and Using Them Effectively](https://developer-service.blog/the-power-of-pythons-metaclasses-understanding-and-using-them-effectively/)
---
## Building the Simulation
**Setting Up Your Environment:**
Before diving into the code, ensure you have Python installed on your computer. You'll also need Pygame, which can be installed easily using pip:
```
pip install pygame
```
**The Core Logic:**
The simulation involves creating a window filled with points representing stars. These stars will randomly increase and decrease in brightness, simulating the twinkling effect:
```
import pygame
import random
import sys
# Initialize Pygame
pygame.init()
# Screen dimensions
width, height = 800, 600
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption('Twinkling Stars Simulation')
# Colors
black = (0, 0, 0)
white = (255, 255, 255)
# Star settings
num_stars = 100
stars = []
for _ in range(num_stars):
x = random.randint(0, width)
y = random.randint(0, height)
brightness = random.randint(1, 255)
stars.append([x, y, brightness])
# Draw stars
def draw_stars(_screen, _stars):
_screen.fill(black)
for star in _stars:
_brightness = random.randint(1, 255) # Change brightness to simulate twinkling
pygame.draw.circle(_screen, (_brightness, _brightness, _brightness), (star[0], star[1]), 2)
pygame.display.flip()
# Main loop
running = True
clock = pygame.time.Clock()
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
draw_stars(screen, stars)
clock.tick(60) # Limit to 60 frames per second
pygame.quit()
sys.exit()
```
**How It Works:**
- The script initializes a Pygame window with a specified width and height.
- It then generates a list of stars, each represented by a position (x, y) and a random initial brightness level.
- In the main loop, the script redraws each star with a new random brightness in every frame to simulate twinkling. The screen is cleared and redrawn at 60 frames per second.
---
## Running Your Simulation
Execute the script, and you'll be greeted with a dynamic starry sky, twinkling away in the vast digital cosmos you've created:
```
python main.py
```
You will see the sky like this:
---
## Conclusion
This Twinkling Stars Simulation is more than just a coding exercise; it's a bridge between the realms of technology and astronomy, between the art of programming and the beauty of the night sky. It demonstrates how even simple code can produce stunningly beautiful simulations, encouraging us to explore further within and beyond our world.
So, whether you're a coding novice eager to embark on a cosmic coding journey or an experienced developer looking to add a sprinkle of celestial magic to your portfolio, this project offers a little something for everyone. Let the stars guide your way to new programming horizons!
| devasservice |
1,751,974 | Oxylabs Go SDK | Hey everyone! We've created an Oxylabs Go SDK that'll allow users to more easily utilize the Oxylabs... | 0 | 2024-02-05T09:22:16 | https://dev.to/mslm_uman/oxylabs-go-sdk-b7e | oxylabs, go, news, api | Hey everyone! We've created an Oxylabs Go SDK that'll allow users to more easily utilize the Oxylabs SERP APIs (and more later) via a Golang library.
You can find it here: https://github.com/mslmio/oxylabs-sdk-go
This is just an MVP and we'll be working on improving it over time with more features.
Would appreciate if Oxylabs users could try it out and give their feedback so we can start addressing it and improving the SDK.
Here's a quick start example:
```go
package main
import (
"fmt"
"github.com/mslmio/oxylabs-sdk-go/serp"
)
func main() {
// Set your Oxylabs API Credentials.
const username = "username"
const password = "password"
// Initialize the SERP realtime client with your credentials.
c := serp.Init(username, password)
// Use `google_search` as a source to scrape Google with adidas as a query.
res, err := c.ScrapeGoogleSearch(
"adidas",
)
if err != nil {
panic(err)
}
fmt.Printf("Results: %+v\n", res)
}
```
It works with both the real-time and async integration methods and makes it especially easy to use the latter method which is otherwise quite tedious.
Please see detailed documentation at https://pkg.go.dev/github.com/mslmio/oxylabs-sdk-go
Source code is at github.com/mslmio/oxylabs-sdk-go
Thank you! | mslm_uman |
1,751,986 | How should you examine before buying a car seat covers? | Introduction: Car seat covers in Bangalore It is important to consider a few factors when buying a... | 0 | 2024-02-05T09:37:53 | https://dev.to/exoticaleathers/how-should-you-examine-before-buying-a-car-seat-covers-4bh3 | **Introduction:**
Car seat covers in Bangalore
It is important to consider a few factors when buying a car seat cover in Bangalore. A car seat cover can help protect your car's upholstery and keep your seats looking new for longer, but not all covers are created equal.
**
Compatibility:**
The first thing to consider when buying a car seat cover is whether it will fit your car's seats. Not all covers are universal, and some may only work with specific makes and models. Check the product description to ensure that the cover you choose is compatible with your car.
Material:
Car seat covers come in a variety of materials, including leather, neoprene, and fabric. The material you choose will depend on your personal preferences and needs. For example, leather covers are durable and easy to clean, while neoprene covers are waterproof and great for outdoor activities.
Comfort:
If you spend a lot of time in your car, you'll want to consider how comfortable the seat cover is. Look for covers with padding or cushioning to provide extra comfort and support while driving.
Style:
Car seat covers come in a range of styles and colors, so you can choose one that complements your car's interior. Whether you prefer a classic look or something more modern, there's a cover out there for you.
Durability:
A good car seat cover should be durable enough to withstand daily wear and tear.
Easy to install:
Installing a car seat cover should be easy and straightforward. Look for covers that come with clear instructions and are easy to attach to your seats.
Maintenance:
Some car seat covers require more maintenance than others. For example, leather covers may need to be conditioned regularly to keep them looking their best. Consider how much time and effort you're willing to put into maintaining your cover before making your purchase.
Price:
Car seat covers come in a range of prices, so you'll want to consider your budget before making your purchase. Keep in mind that a higher price doesn't always mean better quality, so be sure to read reviews and research your options before making your decision.
Protection:
One of the main reasons people buy car seat covers is to protect their seats from damage. Look for covers that offer protection against spills, stains, and other types of wear and tear.
Brand reputation:
Look for brands that are known for producing high-quality products and have positive reviews from customers.
Conclusion:
Buying a car seat cover in Bangalore requires some thought and consideration. By taking the time to research your options and consider your needs, you can find a cover that will protect your seats, look great, and provide the comfort and support you need while driving.
| exoticaleathers | |
1,752,003 | How to Create a Responsive Chatbot Using HTML & JavaScript | You might have noticed those helpful chatbots on websites – they’re becoming a must-have! If you’re... | 0 | 2024-02-05T09:55:36 | https://dev.to/codingmadeeasy/how-to-create-a-responsive-chatbot-using-html-javascript-46p9 | webdev, javascript, programming, tutorial | You might have noticed those helpful chatbots on websites – they’re becoming a must-have! If you’re not familiar, a chatbot is like a virtual assistant on a computer that can understand what you ask and give you useful answers.
For beginner web developers, making a chatbot is a hands-on way to practice using HTML, CSS, and JavaScript – the essential tools for real-world projects. In this blog post, I’ll walk you through creating your own chatbot using these technologies.
In this chatbot, users can ask questions and get quick answers. It’s designed to look good and work smoothly on different devices. Just keep in mind that this chatbot uses the OpenAI API for generating responses, and the best part is it’s free!
Let’s set up a structure for our chatbot first, follow the structure below:
Folder Creation:
Begin by creating a new folder. Choose any name that suits your preference.
File Setup:
Inside the created folder, generate three essential files:
Create an index.html file. Ensure the filename is “index” with the extension “.html”.
Create a style.css file. Name it “style” with the “.css” extension.
Create a script.js file. Name it “script” with the “.js” extension.
HTML Structure:
Open the index.html file and insert the following HTML code:
This code establishes the structure for your chatbot. It includes a chatbot header, an unordered list (ul) acting as the chatbox, and an input field for user messages. Initially, a greeting message appears as the first chat item (“li”). Additional chat details will be dynamically added using JavaScript.
Read More
{% embed https://codemagnet.in/2024/02/05/how-to-create-a-responsive-chatbot-using-html-javascript/ %}
Have any queries please drop them down in the comment section
| codingmadeeasy |
1,752,049 | How Amazing Result FITSPRESSO- {Consumer Report 2024} Weight-Loss and Maintenance Strategies? | FITSPRESSO OFFICIAL WEB:... | 0 | 2024-02-05T10:55:22 | https://dev.to/evelynejulian/how-amazing-result-fitspresso-consumer-report-2024-weight-loss-and-maintenance-strategies-16l | webdev, beginners | FITSPRESSO
OFFICIAL WEB: https://www.onlymyhealth.com/fitspresso-reviews-is-this-fitspresso-coffee-loophole-recommended-ingredients-1706000228
https://healthstorylife.com/healthymalebooster-order/
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https://amrpa.org/Portals/0/LiveForms/19/Files/BoostaroSouthAfrica.pdf
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https://amrpa.org/Portals/0/LiveForms/19/Files/SugarDefender-.pdf
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https://www.facebook.com/AustraliaFitspresso/
https://www.facebook.com/FitspressoNederland/
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https://amrpa.org/Portals/0/LiveForms/20/Files/KetoGenesisGummies.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/FitspressoCoffee.pdfhttps://amrpa.org/Portals/0/LiveForms/19/Files/Nutrizen-Keto-ACV-Gummies.pdf
https://amrpa.org/Portals/0/LiveForms/19/Files/Nutrizen-Keto-Gummies-price.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/BiofuelKetoGummiesFact.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/BiofuelKetoACVGummiesFact.pdf
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https://amrpa.org/Portals/0/LiveForms/20/Files/Biofuel-Keto-ACV-Gummies.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/Biofuel-Keto-Gummies-Reviews.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/PureSlimKetoGummies.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/BioFuelKetoGummies.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/BioFuelKeto.pdf
https://amrpa.org/Portals/0/LiveForms/20/Files/SugarDefender24Fact.pdf
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https://amrpa.org/Portals/0/LiveForms/19/Files/Sugar-Defender-Drop-Rrviews.pdf
https://amrpa.org/Portals/0/LiveForms/19/Files/SugarDefender-SupplementDiabetes.pdf
| evelynejulian |
1,752,110 | CRUD App Using Binary files in python | First we need to import pickle module (it is a built-in module): import pickle Enter... | 0 | 2024-02-05T11:53:57 | https://dev.to/codewithlaksh/crud-app-using-binary-files-in-python-46c5 | python | First we need to import pickle module (it is a built-in module):
```python
import pickle
```
Then we will create a function to load the file and return the data
```python
def load_file(filename: str):
try:
with open(filename, 'rb') as c:
l = []
try:
while True:
rec = pickle.load(c)
l.append(rec)
except EOFError:
return l
except FileNotFoundError:
open(filename, 'w')
print(filename, "was not found, instead it was created!")
```
Then we will create a function to create data
```python
def add_data(filename: str, data: dict):
with open(filename, "ab") as c:
pickle.dump(data, c)
print('Data inserted successfully!')
opt = input("Do you want to read the data ?\n")
if opt.lower() == 'y':
l = load_file(filename)
for rec in l:
print(rec)
```
Then we will create a function to update existing data
```python
def update_data(filename: str, data: dict):
recs = load_file(filename)
for i in data:
for rec in recs:
if i in rec:
rec[i] = data[i]
with open(filename, "wb") as c:
c.seek(0)
for i in recs:
pickle.dump(i, c)
print('Data updated successfully!')
opt = input("Do you want to read the data ?\n")
if opt.lower() == 'y':
l = load_file(filename)
for rec in l:
print(rec)
```
Then we will create a function to delete data
```python
def delete_data(filename: str, key: str):
recs = load_file(filename)
for rec in recs:
if key in rec:
recs.pop(recs.index(rec))
with open(filename, "wb") as c:
c.seek(0)
for i in recs:
pickle.dump(i, c)
print('Data deleted successfully!')
opt = input("Do you want to read the data ?\n")
if opt.lower() == 'y':
l = load_file(filename)
for rec in l:
print(rec)
```
The following fragment will run the entire program:
```python
if __name__ == "__main__":
filename = "student.dat"
print('''
1. Enter 'c' to create data
2. Enter 'r' to read data
3. Enter 'u' to update existing data
4. Enter 'd' to delete data
''')
ch = 'y'
while ch == 'y':
opt = input('Enter your option: ')
if opt in 'crud':
if opt == 'c':
name = input('Enter student name: ')
roll = input('Enter student roll no: ')
marks = input('Enter student marks: ')
data = {name: [roll, marks]}
add_data(filename, data)
if opt == 'r':
l = load_file(filename)
for rec in l:
print(rec)
if opt == 'u':
name = input('Enter student name (whose data is to be updated): ')
roll = input('Enter student roll no: ')
marks = input('Enter student marks: ')
data = {name: [roll, marks]}
update_data(filename, data)
if opt == 'd':
name = input('Enter student name (whose data is to be deleted): ')
delete_data(filename, name)
ch = input('Do you want to continue ?: (y for Yes or n for No)').lower()
``` | codewithlaksh |
1,752,182 | Use PostgREST and HTMX to Build RESTful APIs from PostgreSQL Databases | Developing software products today requires a rapid development cycle, from conceptualization to... | 0 | 2024-02-05T12:55:55 | https://www.koyeb.com/tutorials/use-postgrest-and-htmx-to-build-restful-apis-from-postgresql-databases | postgres, api, webdev, tutorial | Developing software products today requires a rapid development cycle, from conceptualization to market launch. Many software products rely on [RESTful](https://en.wikipedia.org/wiki/REST) APIs to communicate with a database. Therefore, it is vital to be able to create robust and compliant RESTful APIs with minimal boilerplate code. This expedites development and allows developers to focus on business logic instead of getting caught up in the complexities of API implementation details.
[PostgREST](https://postgrest.org/) is a standalone web server that turns your PostgreSQL database into a RESTful API using the database's structural constraints and permissions to define the API's endpoints and operations. In this tutorial, you will create a simple note-taking app by leveraging PostgREST to construct a RESTful API for the app and using [htmx](https://htmx.org/) to deliver HTML content.
As you read this guide, you can follow along with the [tutorial repository](https://github.com/koyeb/example-postgrest-htmx) to view the referenced files.
## Requirements
To successfully follow along with this tutorial, ensure you have the following prerequisites:
- [Docker](https://www.docker.com/) installed on your development machine.
- Git installed on your development machine.
- A PostgreSQL client installed on your development machine.
- A [Koyeb](https://app.koyeb.com/) account to deploy the application.
## Steps
We will set up a RESTful API with PostgREST and HTMX with the following steps:
1. [Configure the database](#Configure-the-database)
2. [Set up PostgREST](#Set-up-PostgREST)
3. [Configure PostgREST to display notes](#Configure-PostgREST-to-display-notes)
4. [Allow users to add new notes](#Allow-users-to-add-new-notes)
5. [Deploy to Koyeb](#Deploy-to-Koyeb)
## Configure the database
PostgREST creates RESTful APIs by leveraging the database schema, utilizing database tables, stored procedures, functions, and views to identify and define the available resources along with their properties. Every table within the database transforms into a resource, and endpoints are created to facilitate [CRUD operations](https://en.wikipedia.org/wiki/Create,_read,_update_and_delete) for each resource. PostgREST dynamically formulates SQL queries in response to HTTP requests received by the server, delivering the query results as JSON responses to the client.
In this section, you'll create and configure a PostgreSQL database to integrate seamlessly with PostgREST.
### Create a PostgreSQL database on Koyeb
To create a PostgreSQL database, first log in to the [Koyeb control panel](https://app.koyeb.com/). Navigate to the Databases tab and select the **Create Database Service** option. You can either input a custom name for your database or use the default generated name. Choose the desired region and specify a default role (or leave it as-is). Finally, click **Create Database Service** to create your PostgreSQL database service.
After creating the PostgreSQL database service, a list of your database services will be presented. Click on your recently generated service from the list, copy the `psql` database connection string, and store it safely for future use.
### Create a database schema and table
In this section, you will create a schema and a database table in your database for the note-taking app.
To begin, create a root directory for the app by running the command below in your terminal window:
```bash
mkdir postgrest_htmx_note
```
The command above creates a directory named `postgrest_htmx_note`. Next, initialise a Git repository in the `postgrest_htmx_note` directory by running the command below:
```bash
cd postgrest_htmx_note
git init
```
The commands above change the current directory of your terminal to the `postgrest_htmx_note` directory and initialize a Git repository within that specific directory.
Next, create a `01_db.sql` file in the root directory and add the query below to the file:
```sql
-- 01_db.sql
CREATE SCHEMA api;
```
The SQL query above creates a [schema](https://www.postgresql.org/docs/current/ddl-schemas.html) named `api` in the database. PostgREST will be granted access to this schema to create RESTful APIs for the database tables in it.
Next, append the query below to the `01_db.sql` file:
```sql
-- 01_db.sql
. . .
CREATE TABLE api.notes (
id SERIAL PRIMARY KEY,
title VARCHAR(255) NOT NULL CHECK (title <> ''),
content TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
```
This query creates a `notes` database table in the `api` schema consisting of the following columns:
- An `id` column for storing unique identifiers that auto-increment for each row of data.
- A `title` column that is not nullable and does not accept empty strings.
- A `content` column with a `text` data type for storing the note's content.
- A `created_at` column for holding date-time information on when a note was created.
PostgREST will create a `/notes` API endpoint for this table with the ability to perform CRUD operations on all columns in the database.
Finally, add the query below to the `01_db.sql` file:
```sql
-- 01_db.sql
. . .
INSERT INTO api.notes (title, content) VALUES ('PostgREST', 'Notes from learning PostgREST & HTMX');
```
The query above adds a sample note to the `notes` database table.
To run the queries in the `01_db.sql` file, connect your PostgreSQL client to the database and execute the file using the client. For demonstration, we will show you how to do this with the `psql` client, but any PostgreSQL client should work:
```bash
psql <YOUR DATABASE_CONNECTION_STRING> -f 01_db.sql
```
Successfully running the queries in the `01_db.sql` file will return the output below:
```
CREATE SCHEMA
CREATE TABLE
INSERT 0 1
```
### Set up a user role
PostgREST ensures security & authorisation by limiting database operations to authorized users via PostgreSQL roles & permissions. In this section, you'll create a database user role with unrestricted access to the `api` schema. PostgREST will connect to the database using this user.
Create a `02_role.sql` file in your project's root and add the following query to it to create a user role in your database:
```sql
-- 02_role.sql
CREATE ROLE auth_user NOINHERIT LOGIN PASSWORD 'auth_user_password';
GRANT USAGE ON SCHEMA api TO auth_user;
GRANT ALL ON api.notes TO auth_user;
GRANT USAGE, SELECT ON SEQUENCE api.notes_id_seq TO auth_user;
```
- The `create role` query creates a role named `auth_user` with a set password. This role is granted login privileges but does not inherit any additional privileges.
- The `grant usage` query allows the `auth_user` role to read objects in the `api` schema.
- The `grant all` query authorizes the `auth_user` role to perform all operations on the `notes` database.
- The `grant usage, select` query gives the `auth_user` role permission to read and retrieve values from the `notes_id_seq` sequence in the `api` schema, allowing it to access unique identifiers in the `api` schema.
To execute the `02_role.sql` file, run the file in your PostgreSQL client:
```bash
psql <YOUR DATABASE_CONNECTION_STRING> -f 02_role.sql
```
Successfully executing the file should not return an error message.
This final step completes all the necessary database setup to prepare it for integration with PostgREST. In the next section, you will set up PostgREST and connect it to the database so that it can automatically create a RESTful API endpoint for the note-taking app.
## Set up PostgREST
PostgREST provides several installation options, including tailored packages for various operating systems, a pre-built binary, and a Docker image. The fastest way to install and run PostgREST for the note-taking application is by using the Docker image option.
To begin, create a `Dockerfile` in the root directory add the code below to it:
```dockerfile
# Dockerfile
FROM postgrest/postgrest:latest
# Create and set the working directory
WORKDIR /app
ARG PORT
# Set environment variables for PostgREST configuration
ENV PGRST_DB_URI=${PGRST_DB_URI}
ENV PGRST_DB_SCHEMA=${PGRST_DB_SCHEMA}
ENV PGRST_DB_ANON_ROLE=${PGRST_DB_ANON_ROLE}
ENV PGRST_SERVER_PORT=${PORT:-8000}
# Expose the port on which PostgREST will run
EXPOSE ${PORT:-8000}
# Command to run PostgREST when the container starts
CMD ["postgrest"]
```
The code above sets up a Docker container environment to run PostgREST. It starts by selecting the most recent PostgREST image available as the base image. After that, the working directory within the container is set to `/app`, where all subsequent commands are executed.
Afterwards, the code sets up four environment variables within the Docker container, obtaining the values for `PGRST_DB_URI`, `PGRST_DB_SCHEMA`, and `PGRST_DB_ANON_ROLE` from corresponding external environment variables. In addition, the code makes the port specified by the `PORT` environment variable available for PostgREST to use (with port 8000 as a fallback value). Lastly, the code specifies the command that should run upon container startup, which is the `postgrest` command.
Next, create an `.env` file in the project's root directory and add the following code to it:
```ini
# .env
PGRST_DB_URI=postgres://auth_user:auth_user_password@<YOUR DATABASE HOST NAME>/<YOUR DATABASE NAME>
PGRST_DB_SCHEMA=api
PGRST_DB_ANON_ROLE=auth_user
```
**Note:** the value of `PGRST_DB_URI` is _not_ the exact connection string you copied from the Koyeb control panel. The new connection string uses the role and role password that we created with the `02_role.sql` file.
The `.env` file's code sets values for environment variables used to configure corresponding variables inside the Docker container. The variables include:
- `PGRST_DB_URI`: This stores the database connection information for PostgREST to establish a connection with the database. The `auth_user` and its associated password replace the username and password sections in your database URL, resulting in this final value.
- `PGRST_DB_SCHEMA`: This specifies the database schema containing the database tables PostgREST should access.
- `PGRST_DB_ANON_ROLE`: This value specifies the database role PostgREST should use for unauthenticated requests.
To ensure the contents of the `.env` file are not committed to Git history, run the command below:
```bash
printf "%s\n" ".env" > .gitignore
```
The command above creates a `.gitignore` file and includes the `.env` file into it, ensuring it is excluded from the Git history.
That's all of the code required to set up PostgREST. To create a Docker image from the instructions in the `Dockerfile`, ensure Docker is running on your machine and run the command below in your Terminal window while in your project's root directory:
```bash
docker build -t pg_notes .
```
Optionally, if you'd like to change the port that PostgREST will run on, pass in `PORT` as a build argument like this:
```bash
docker build --build-arg="PORT=5555" -t pg_notes .
```
The commands above create a Docker image named `pg_notes` using the instructions from the `Dockerfile`. The period (`.`) at the end of the command specifies that the Dockerfile is located in the current directory.
To create and run a Docker container from the `pg_notes` image, run the command below in your terminal window:
```bash
docker run -p 8000:8000 --env-file .env pg_notes
```
Remember to switch the port specification if you modified the port configuration during the build:
```bash
docker run -p 5555:5555 --env-file .env pg_notes
```
The commands above create and run a container built from the `pg_notes`. The `-p` flag maps the port on the host machine to port in the Docker container and the `--env-file` option instructs Docker to load environment variables from the `.env` file during container instantiation.
With the Docker container now active, PostgREST has established a successful connection to the database and generated an API for the note-taking application. To verify the API, visit `http://localhost:8000/notes` in your browser. You should be able to view a JSON object displaying the sample note you inserted into the `notes` database.
In the upcoming section, you will implement the logic to display the notes in your database on a webpage.
## Configure PostgREST to display notes
Besides returning JSON responses for database data, PostgREST can also serve HTML documents for requests that include the `Accept: text/html` header. PostgREST can serve HTML files created by database functions through requests to routes that match the function name.
To create a page to display the notes in your database, start by creating a `03_index.sql` file in your project's root directory and add the following query to it:
```sql
-- 03_index.sql
-- Add media type handler for `text/html` requests
CREATE DOMAIN "text/html" AS TEXT;
```
The query above adds a `text/html` media type handler, enabling PostgREST to recognize browser requests with an `Accept: text/html` header and deliver HTML document files in response.
Next, add the query below to the `03_index.sql` file to create a function that sanitizes HTML content in the note title and content to mitigate injection risks:
```sql
-- 03_index.sql
. . .
-- Sanitize text to replace characters with HTML entities
CREATE OR REPLACE FUNCTION api.sanitize_html(text) RETURNS text AS $$
SELECT REPLACE(REPLACE(REPLACE(REPLACE(REPLACE($1, '&', '&'), '"', '"'),'>', '>'),'<', '<'), '''', ''')
$$ language sql;
```
The query above creates a SQL function named `sanitize_html` which takes a text, replaces character entities in it with HTML entities and returns the sanitized text.
Next, append the query below to the `03_index.sql` file to add a function that formats all notes in the database as HTML cards:
```sql
-- 03_index.sql
. . .
-- Format all notes as HTML cards
CREATE OR REPLACE FUNCTION api.html_note(api.notes) RETURNS text AS $$
SELECT FORMAT($html$
<div class="card">
<div class="card-body">
<h5 class="card-title">%2$s</h5>
<p class="card-text text-truncate">%3$s</p>
</div>
</div>
$html$,
$1.id,
api.sanitize_html($1.title),
api.sanitize_html($1.content)
);
$$ language sql stable;
```
The provided SQL query creates an `html_note` function within the `api` schema. This function takes the `api.notes` table as a parameter and produces formatted HTML markup for the notes.
Utilizing the `format` function in PostgreSQL, an HTML template is enclosed within the dollar-quoted strings `$html$`. The `%2$s` and `%3$s` placeholders within the template denote the second and third arguments supplied to the `format` function. These arguments consist of the note's ID (`$1.id`), the sanitized note title (`$1.title`), which undergoes sanitization using the previously established `api.sanitize_html` function, and the sanitized note content (`$1.content`), also sanitized with the `api.sanitize_html` function.
To create the HTML markup to display all notes, add the query below to the `03_index.sql` file:
```sql
-- 03_index.sql
. . .
-- Create HTML to display all notes
CREATE OR REPLACE FUNCTION api.html_all_notes() RETURNS text AS $$
SELECT COALESCE(
'<div class="card-columns">'
|| string_agg(api.html_note(n), '' ORDER BY n.id) ||
'</div>',
'<p class="">No notes.</p>'
)
FROM api.notes n;
$$ language sql;
```
The query provided above creates a function called `html_all_notes` in the `api` schema, which returns text. The `SELECT` statement within the function uses the `COALESCE` function to generate HTML markup based on whether notes are present in the database or not.
If notes are present, the `string_agg` function combines the HTML representation of notes returned by the `html_note` function. These notes are ordered by their `id` values and enclosed within a `div` element with a `card-columns` class. If there are no notes, a paragraph element with the text `No notes.` is returned.
With the HTML markup for all notes now obtainable through a function, add the following query to the `03_index.sql` file to generate a page for presenting the notes:
```sql
-- 03_index.sql
. . .
-- Generate page to display notes
CREATE OR REPLACE FUNCTION api.index() RETURNS "text/html" AS $$
SELECT $html$
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Note Taking App</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="/rpc/index">Note App</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="/rpc/index">Notes</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/rpc/new">Create Note</a>
</li>
</ul>
</div>
</nav>
<div class="container mt-4">
<h2>Notes</h2>
$html$
|| api.html_all_notes() ||
$html$
</div>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</body>
</html>
$html$
$$ language sql;
```
The query above defines an `index` function that returns a `text/html` MIME type. The markup returned is a basic HTML page with style sheet and script tags for Bootstrap.
The page body contains a Bootstrap `navbar` and a `div` element with the `container mt-4` class. Within this container, the `html_all_notes()` function is invoked to display all existing notes.
To execute the `index.sql` file, run the file in your PostgreSQL client. With `psql`, this would look something like this:
```bash
psql <YOUR DATABASE_CONNECTION_STRING> -f 03_index.sql
```
Successfully executing the file should return the output:
```
CREATE DOMAIN
CREATE FUNCTION
CREATE FUNCTION
CREATE FUNCTION
CREATE FUNCTION
```
The HTML page generated by the `index` function is accessible at the `/rpc/index` route. To view the page, restart your running Docker container, and navigate to `http://localhost:8000/rpc/index` in your browser. You should see a page showcasing all available notes from your database.
In this section, you've successfully served a webpage that directly fetches and displays a list of notes from the database using PostgREST. Moving forward, you'll enhance the functionality by incorporating the ability to add new notes.
## Allow users to add new notes
Adding new notes to the existing database entries involves creating a page for users to enter and submit notes and creating an endpoint (database function) to receive values for new notes and save them to the database.
Begin by creating a `04_new.sql` file in your project's root directory and add the query below to create an endpoint for adding new notes:
```sql
-- 04_new.sql
-- Create an endpoint for adding new notes
CREATE OR REPLACE FUNCTION api.add_note(_title text, _content text) RETURNS "text/html" AS $$
BEGIN
INSERT INTO api.notes(title, content) VALUES (_title, _content);
RETURN 'Note added successfully.' AS result;
EXCEPTION
WHEN others THEN
-- An error occurred during the insert operation
RAISE NOTICE 'An error occurred: %', SQLERRM;
RETURN 'An error occurred.' AS result;
END;
$$ LANGUAGE plpgsql;
```
The query above adds an `add_note` function to the `api` schema. This function accepts `_title` and `_content` parameters, inserts the values into the `notes` database and returns a message indicating success or failure based on the outcome of the insert operation.
Next, the query below to the `new.sql` file to create a page featuring a form for submitting new notes to the `add_notes` endpoint using HTMX:
```sql
-- 04_new.sql
. . .
-- Create page for submitting new notes
CREATE OR REPLACE FUNCTION api.new() RETURNS "text/html" AS $$
SELECT $html$
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Note Taking App</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<!-- htmx for AJAX requests -->
<script src="https://unpkg.com/htmx.org"></script>
</head>
<body hx-headers='{"Accept": "text/html"}'>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="/rpc/index">Note App</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="/rpc/index">Notes</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="/rpc/new">Create Note</a>
</li>
</ul>
</div>
</nav>
<div class="container mt-4">
<h2>Create a New Note</h2>
<form hx-post="/rpc/add_note" hx-trigger="submit" hx-on="htmx:afterRequest: this.reset()" hx-target="#response-area">
<p class="text-success" id="response-area"></p>
<div class="form-group">
<label for="note-title">Title:</label>
<input type="text" class="form-control" id="note-title" name="_title" placeholder="Enter note title" required>
</div>
<div class="form-group">
<label for="note-content">Content:</label>
<textarea class="form-control" id="note-content" name="_content" rows="4" placeholder="Enter note content"
required></textarea>
</div>
<button type="submit" class="btn btn-primary">Save Note</button>
</form>
</div>
</body>
</html>
$html$;
$$ language sql;
```
The provided query creates a `new` function in the `api` schema, returning content with a MIME type of `text/html`. Similar to the `api.index` function, this function generates a standard HTML page, and in addition to the Bootstrap style sheet and script tags, the `<head>` section includes a script to load HTMX via a CDN.
Added to the opening `<body>` tag is the `hx-headers='{"Accept": "text/html"}'` HTMX attribute. This inclusion ensures that HTMX elements include this header in every request, ensuring PostgREST handles the request appropriately.
The note creation form includes two input fields named `_title` and `_content`, aligning with the parameters expected by the `add_note` endpoint. Additionally, the form incorporates HTMX attributes that enable AJAX requests directly from HTML. These attributes are:
- `hx-post`: This attribute directs the form to initiate a `POST` request to a specified URL, in this case, `/rpc/add_note`.
- `hx-trigger`: This attribute defines the browser event that triggers the form action. The value `submit` indicates that the action is triggered upon form submission.
- `hx-on`: This attribute enables the embedding of inline scripts. The value `htmx:afterRequest: this.reset()` resets the form after executing the submission request.
- `hx-target`: This attribute directs HTMX to insert any server response into an element with the id `response-area`.
Upon form submission, HTMX initiates a POST request to the `add_note` endpoint, submitting the values from the `_title` and `_content` fields. The `add_note` endpoint then stores these submitted values in the database.
To execute the code within the `04_new.sql` file, use your PostgreSQL client to run the file. If you're using the `psql` client, you would want to execute the following:
```bash
psql <YOUR DATABASE_CONNECTION_STRING> -f new.sql
```
To test this functionality, restart your Docker container and go to `http://localhost:8000/rpc/new` in your browser; a form should be visible on the page. Complete and submit the form and you should see the message "Note added successfully" displayed. Navigate back to the `/rpc/index` page to view your newly added note listed on the page.
You've successfully developed a functional note-taking application integrated directly with your PostgreSQL database. In the upcoming section, you'll deploy the application online on Koyeb.
## Deploy to Koyeb
Now that the code writing is finished, the final step involves deploying the app online on Koyeb.
Begin by creating a GitHub repository for your code, then execute the following command in your terminal window to push your local code to the repository:
```bash
git add --all
git commit -m "Note-taking app with PostgREST and HTMX."
git remote add origin git@github.com/<YOUR_GITHUB_USERNAME>/<YOUR_REPOSITORY_NAME>.git
git branch -M main
git push -u origin main
```
To deploy the code on GitHub, navigate to the [Koyeb control panel](https://app.koyeb.com/). On the **Overview tab**, initiate the deployment process by clicking the **Create Web Service** button. On the App deployment page:
- Select the GitHub deployment option.
- Select your code's GitHub repository from the drop-down menu. Alternatively, you can enter our public [PostgREST and HTMX example repository](https://github.com/koyeb/example-postgrest-htmx) into the **Public GitHub repository** at the bottom of the page: `https://github.com/koyeb/example-postgrest-htmx`.
- Select the branch you intend to deploy (e.g., `main`).
- Select the `Dockerfile` builder option.
- Click on the **Advanced** button and choose **Add Variable** to add extra environment variables.
- For each environment variable specified in your `.env` file, enter the variable name, choose the **Secret** type, and select the **Create secret** option in the value field. In the modal that appears, provide the secret name and its corresponding value, then click the **Create** button.
- Enter a name for the application or use the one already provided.
- Lastly, initiate the deployment process by clicking the **Deploy** button.
Throughout the deployment process, you can monitor the progress via the logs. Once deployment concludes and the health checks pass successfully, your application will be live.
To access your live application, add `/rpc/index` to your app's public URL and open the resulting URL in your web browser.
## Conclusion
In this tutorial, we built a basic note-taking app directly served from a PostgreSQL database using PostgREST. The service builds an API and web page directly from database queries using a combination of PostgreSQL functions and HTMX. Once the application was ready, we deployed it to Koyeb to make it accessible globally.
While this guide demonstrated the basic way you can build RESTful services from a PostgreSQL database, PostgREST provides extensive capabilities beyond what's covered here. Explore the [PostgREST documentation](https://postgrest.org/en/stable/) to read more about how to create robust APIs using PostgREST.
| alisdairbr |
1,752,252 | Gamelade | Chào mừng bạn đến với Gamelade.vn – Điểm đến lý tưởng để cập nhật mọi thông tin về thế giới game. Tại... | 0 | 2024-02-05T14:25:05 | https://dev.to/gamelade0/gamelade-27el | Chào mừng bạn đến với Gamelade.vn – Điểm đến lý tưởng để cập nhật mọi thông tin về thế giới game. Tại đây, chúng tôi cam kết mang đến cho bạn những bài viết chất lượng, tin tức nhanh nhất và phân tích sâu sắc về từng tựa game, công nghệ game mới và cả cộng đồng game thủ.
[Game online](https://gamelade.vn/)
 | gamelade0 | |
1,752,274 | Grid de 8 pontos uma técnica que torna seu projeto escalável | Se você é um designer ou desenvolvedor, talvez já tenha ouvido o termo sistema de grid. Neste artigo,... | 0 | 2024-02-05T15:03:37 | https://dev.to/iuricode/grid-de-8-pontos-uma-tecnica-que-torna-seu-projeto-escalavel-4ol7 | grid, ux, pattern | Se você é um designer ou desenvolvedor, talvez já tenha ouvido o termo sistema de grid. Neste artigo, discutirei sobre o uso dos sistemas de grid de 8 pontos. Porque o espaçamento com 8 pontos ajuda o designer e o desenvolvedor a manter um projeto consistente e escalável.
## O que é Grid de 8 pontos
O grid de 8 pontos é uma técnica que tem sido amplamente utilizada no mundo do design e da programação nos últimos anos. O grid de 8 pontos é quando usamos múltiplos de 8 para definir tanto o espaçamento, quanto o tamanho dos elementos da página em que estamos construindo.
A utilização de números como 8 para dimensionar e espaçar elementos torna o dimensionamento para uma ampla variedade de dispositivos. Além disso, a maioria dos tamanhos de tela populares é divisível por 8, o que facilita o ajuste. O princípio do grid de 8 pontos é usar múltiplos de 8 para layout, dimensões, preenchimento e margem dos elementos.
## Grid de 8 pontos na prática
Utilizar o grid de 8 pontos em espaçamentos nos projetos é tão simples quanto parece. Simplesmente vai fazer com que a distância de um elemento para o outro seja múltipla de 8.
Geralmente usamos uma certa distância para espaçamento entre elementos que fazem parte do mesmo conteúdo e o dobro desse espaçamento para separar novos conteúdos. Veja no exemplo abaixo:
## Conclusão
O grid de 8 pontos é uma técnica poderosa que pode ajudar designers e desenvolvedores a criar projetos consistentes e organizados. Utilizando grid de 8 pontos, é fácil manter a consistência no design, garantir que os elementos estejam equilibrados entre sí. Em resumo, a utilização do grid de 8 pontos é essencial para qualquer projeto de design ou desenvolvimento que exija organização e harmonia. | iuricode |
1,752,444 | Top 10 Programming Languages to Learn in 2024 | Top 10 Programming Languages to Learn in 2024 Learning to code is one of the best investments... | 0 | 2024-02-05T18:21:18 | https://dev.to/sh20raj/top-10-programming-languages-to-learn-in-2024-3ieh | webdev, javascript, beginners, programming |
Top 10 Programming Languages to Learn in 2024
-
Learning to code is one of the best investments you can make in today's job market. But with new languages and frameworks emerging all the time, which ones should you focus on in 2024? Here are 10 of the most popular and promising programming languages for next year:
1. Python
Python has continued to grow in popularity and usage over the past few years. Its simple syntax makes it a great first language to learn. Python is widely used for web development, data analysis, artificial intelligence, and scientific computing. Knowledge of Python will be a valuable skillset for a variety of technology roles.
2. JavaScript
JavaScript remains the core language of web development. It powers dynamic interactions on websites and web applications. JavaScript frameworks like React and Vue are essential tools for front-end developers. JavaScript is also used for game development, mobile apps and server-side code with Node.js.
3. Java
Java is still one of the most commonly used languages in enterprise applications and software development. It is the official language of Android development as well. Demand for Java developers will remain strong as companies continue relying on it for critical systems and infrastructure.
4. C++
For high-performance computing and systems programming, C++ is difficult to match. It is widely used for operating systems, game engines, databases and embedded systems. Many leading tech firms like Microsoft, Oracle and Adobe use C++ extensively in their tech stacks.
5. C#
As Microsoft's flagship language, C# continues to be a top choice for Windows, cloud and enterprise development. It is the driving force behind technologies like .NET, Xamarin and Unity. C# jobs will grow steadily along with Microsoft's cloud offerings like Azure.
6. Go
Also called Golang, Go is a modern language developed by Google that makes it easy to build reliable and efficient software. It is gaining traction for web assembly, cloud-native development, site reliability engineering and devops.
7. Rust
Rust is a blazingly fast system programming language with a strong focus on safety and stability. It can replace C and C++ for performance critical applications. Rust is being adopted by companies like Microsoft, Amazon, Dropbox and Firefox.
8. Swift
Swift is the default language for building iOS and Mac apps. As Apple technologies remain hugely popular, knowledge of Swift will be in demand, especially for mobile developers. Swift is also used for server-side code and system scripting.
9. PHP
PHP remains the most popular language for server-side web development. It powers many content management systems like WordPress which run a big portion of the internet. PHP jobs are plentiful for those who know modern PHP frameworks like Laravel.
10. TypeScript
TypeScript is an extension of JavaScript that adds optional typing and other enhancements. It is gaining popularity in front-end frameworks like React, Angular and Vue. TypeScript skills can make you a more productive front-end developer.
The demand for developers is booming globally across industries. Learning any of these languages in 2024 can expand your career opportunities as a software engineer or programmer. | sh20raj |
1,752,538 | Some great first posts from new authors 💞 | It's a new month! Happy February, everyone. I took a look at all the posts published by new authors... | 0 | 2024-02-05T21:28:58 | https://dev.to/devteam/some-great-first-posts-from-new-authors-3g4d | ---
title: Some great first posts from new authors 💞
published: true
description:
tags:
# cover_image: https://direct_url_to_image.jpg
# Use a ratio of 100:42 for best results.
# published_at: 2024-01-31 20:41 +0000
---
It's a new month! Happy February, everyone.
I took a look at all the posts published by new authors in January, and wanted to highlight a few that I'm particularly fond of.
These posts are all from brand new authors - folks that are either totally new to the community or past lurkers who have unlocked their first `published: true` milestone!
For your reading pleasure:
{% link https://dev.to/kkeats9898/my-first-game-4f63 %}
{% link https://dev.to/benscholtz/from-punch-cards-to-the-modern-data-stack-f0l %}
{% link https://dev.to/jreock/dora-metrics-what-are-they-and-whats-new-in-2023-4l50 %}
{% link https://dev.to/surajraika/underestimating-rust-for-my-project-5793 %}
{% link https://dev.to/adaboese/using-vector-embeddings-to-overengineer-404-pages-47b1 %}
Happy Coding! | jess | |
1,752,578 | How to Build Dependent Lists using Excel Dynamic Functions in C# .NET | Learn how to build dependent lists using Excel dynamic functions in C# .NET. See more from Document Solutions today. | 0 | 2024-02-05T21:46:09 | https://developer.mescius.com/blogs/how-to-build-dependent-lists-using-excel-dynamic-functions-in-c-sharp-net | webdev, devops, csharp, tutorial | ---
canonical_url: https://developer.mescius.com/blogs/how-to-build-dependent-lists-using-excel-dynamic-functions-in-c-sharp-net
description: Learn how to build dependent lists using Excel dynamic functions in C# .NET. See more from Document Solutions today.
---
**What You Will Need**
- Visual Studio
- .NET 6+
- NuGet Package:
[DS.Documents.Excel](https://www.nuget.org/packages/DS.Documents.Excel)
**Controls Referenced**
- [Document Solutions for Excel, .NET Edition](https://developer.mescius.com/document-solutions/dot-net-excel-api/)
- [Documentation](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/overview.html) | [Online Demo Explorer](https://developer.mescius.com/document-solutions/dot-net-excel-api/demos/)
**Tutorial Concept**
Smart dependent lists using Excel functions with a C#/.NET Excel API - Dynamic or smart dependent lists are often used in Excel reports, and this process will add functionality to a desktop application.
---
In Microsoft Excel, a Dependent List or Cascading Dropdown signifies two or more lists where the items of one list change depending on another list. Dependent lists often find their use in Excel-based business reports, such as class-students lists in academic scorecards, region-country lists in regional sales reports, year-region lists in population dashboards, and unit-line-product lists in a production summary report, to name a few.
In this blog, you will learn how to programmatically create master and dependent dropdown lists with Excel’s Data Validation and Dynamic array functions UNIQUE, CHOOSECOLS, and FILTER using [<span>Document Solutions for Excel (DsExcel) for C# .NET</span>](https://developer.mescius.com/document-solutions/dot-net-excel-api/ "/document-solutions/dot-net-excel-api/").
## Use case
Suppose you are preparing an Excel report to study, compare, and analyze the behavior of customer orders. You get the customer’s order history from the sales department in the format as shown below:
In your Excel report, you want to show the details of a particular customer’s order. To avoid invalid data from being looked upon in the report, you wanted to add two dropdowns, one for the Customer Name and the other for the Order ID. The values for these dropdowns should come from the order history data shown above. However, in the Order ID dropdown, you want to display the values related to the selected customer only, as illustrated below:
### Design Approach in Excel
One can create a smart, interactive dependent list using several different ways in MS Excel; for example,
* using a [<span>Data Validation List</span>](https://support.microsoft.com/en-us/office/apply-data-validation-to-cells-29fecbcc-d1b9-42c1-9d76-eff3ce5f7249#:~:text=Add%20data%20validation%20to%20a%20cell%20or%20a%20range&text=Select%20one%20or%20more%20cells,list%20values%2C%20separated%20by%20commas. "https://support.microsoft.com/en-us/office/apply-data-validation-to-cells-29fecbcc-d1b9-42c1-9d76-eff3ce5f7249#:~:text=Add%20data%20validation%20to%20a%20cell%20or%20a%20range&text=Select%20one%20or%20more%20cells,list%20values%2C%20separated%20by%20comma") in combination with regular built-in functions such as OFFSET, INDEX, MATCH, or dynamic array functions such as FILTER, UNIQUE, etc.
* using Form controls with linked cells
* using VBA, and so on.
In this blog, we will use the approach of a **Data Validation List** with **dynamic array functions** to create the dependent list described in the use case above.
In Excel, you can use the _List_ option with the **Data Validation** feature to create the dropdowns as shown below:
However, dynamic array functions like UNIQUE, FILTERS, and others could not be used as a data validation source because of their spilling behavior. While the dynamic array functions return an array, a list-based data validation must refer to an actual range within the worksheet or a hard-coded comma-separated list. As a result, these functions must be evaluated separately in the worksheet, and the reference of the evaluating cell must be used as the source for the lists.
### Programmatic implementation using DsExcel
With [<span>DsExcel</span>](https://developer.mescius.com/document-solutions/dot-net-excel-api/ "/document-solutions/dot-net-excel-api/"), developers have access to an interface-based API modeled on Excel's document object model, offering a complete suite of tools to easily create, manipulate, convert, and share Microsoft Excel-compatible spreadsheets. It empowers you to manage your data easily and efficiently and build solutions tailored to your unique requirements.
Let’s walk through the steps to create the desired master (Customer Name) and dependent (OrderID) dropdown lists programmatically using DsExcel.
Check out the documentation to see [<span>how to get started with DsExcel</span>](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/getting-started.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/getting-started.html") in your C# application.
#### **Step 1 - Workbook Initialization**
Using DsExcel API, the first step is to initialize an instance of Workbook. You can then choose to either open an existing Excel document or create a new workbook as per your business needs. For this blog, we’re loading an existing Excel document with the customer’s order history using the [_<span>Open</span>_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook~Open.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook~Open.html") method with the [**IWorkbook**](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook.html") interface as depicted below:
```
Workbook workbook = new Workbook();
workbook.Open("CustomerOrderHistory.xlsx");
```
#### **Step 2 - Get the Worksheet**
Next, you need to get the worksheet for creating the required report. With DsExcel, you can get the worksheet using the [_<span>Worksheets</span>_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook~Worksheets.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook~Worksheets.html") collections from the **IWorkbook** interface. You can also opt to [create a new worksheet](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/WorkWithSheets.html#i-heading-add-multiple-worksheets "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/WorkWithSheets.html#i-heading-add-multiple-worksheets"). However, for the simplicity of the formulas to be used in the report, we are creating the report on the same worksheet that stores the order’s history as depicted below:
```
IWorksheet worksheet;
worksheet = workbook.Worksheets["data"]; //OR workbook.Worksheets[0];
```
_Note: The report's layout and other required configurations have already been created in the Excel file because they are outside the scope of this blog. The report starts at the location $L$2 as shown below:_
#### **Step 3 - Get the unique list of customer names (for master dropdown)**
After the initialization, you need to get the list of unique customer names for the master dropdown to be added to the “Select Customer Name” section in the report. For this, choose any cell in the worksheet with space at the bottom to spill the data vertically; we used cell T3\. Next, use the UNIQUE function on the required Customer Name data range.
With DsExcel, you can get a cell or range of cells using the [_<span>Range</span>_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorksheet~Range.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorksheet~Range.html") property with the [**IWorksheet**](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorksheet.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorksheet.html") interface and set a dynamic formula to it using the [_Formula2_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange~Formula2.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange~Formula2.html") property of the [**IRange**](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange.html") interface as depicted below:
```
IRange rngUniqueCustomerNames;
rngUniqueCustomerNames = worksheet.Range["T3"]; //dummy cell to get unique list of customer names
rngUniqueCustomerNames.Formula2 = "=UNIQUE($B$2:$B$2156)";
```
#### **Step 4 - Create the master dropdown**
Once you have the list of customer names, use it as a source for the master dropdown created using the **Data Validation** on **List**. In this blog sample, this master dropdown is created in cell L3.
Using DsExcel, data validation is configured on a range using the [_<span>Validation</span>_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange~Validation.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange~Validation.html") property of the **IRange** interface. Add a new validation rule instance for a range using the [_Add_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IValidation~Add.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IValidation~Add.html") method of the [**IValidation**](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IValidation.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IValidation.html") interface. Choose the ValidationType.List option for the List type data validation and set the formula to the cell with the UNIQUE formula; here it is T3 as depicted below:
```
IValidation listValidation = worksheet.Range["L3"].Validation;
listValidation.Add(ValidationType.List, ValidationAlertStyle.Stop, ValidationOperator.Equal,"=$T$3#");
```
Note that to get the resultant range of the dynamic array function, the cell reference is followed by a **#**
#### **Step 5 - Fetch the list of unique OrderIDs (for dependent dropdown)**
After you have the master dropdown ready, let’s get the list of unique OrderIDs for the customer name selected in the master dropdown. To do this, again select any cell in the worksheet (in this sample, this cell is $V$2). Use the following formula in this cell to get the desired list of OrderIDs.
```
=CHOOSECOLS(FILTER(Unique_Cus_Order_combo,
CHOOSECOLS(Unique_Cus_Order_combo,2)=CustomerName), 1).
```
The breakdown of the formula is as follows:
* Defined nameCustomerName refers to the value of the cell containing the master dropdown; in this sample, it refers to =$L$3
* Defined nameUnique_Cus_Order_combo refers to the range of unique combinations of order ID and customer name. It stores the formula =UNIQUE(data!$A$2:$B$2156) where range A and B contain the OrderID and Customer Names, respectively. The data it returns is as shown below:
* The inner CHOOSECOLS function gives the list of Customer names from the range represented by Unique_Cus_Order_combo to match against the CustomerName in the FILTER function.
* The FILTER function filters out the data from Unique_Cus_Order_combo corresponding to the selected customer name, as shown below:
* Finally, the outer CHOOSECOLS function returns the desired list of OrderIDs from the filtered range, as shown below:
To set the defined names and dynamic formula using DsExcel, follow the sample code below:
```
workbook.Names.Add("CustomerName", "=$L$3");
workbook.Names.Add("Unique_Cus_Order_combo", "=UNIQUE(data!$A$2:$B$2156)");
IRange rngUniqueOrderIds;
rngUniqueOrderIds = worksheet.Range["V2"]; //dummy range to get unique list of customer names
rngUniqueOrderIds.Formula2 = "=CHOOSECOLS(FILTER(Unique_Cus_Order_combo, CHOOSECOLS(Unique_Cus_Order_combo,2)=CustomerName), 1)";
```
#### **Step 6 - Populate the dependent dropdown**
The next step is to populate the OrderID dropdown (in this sample, it is at L6) using the list fetched in the previous step. For this, add a data validation of the type list (same as the one added for the master dropdown) and set its source value to the cell value containing the formula in the previous step (i.e., =$V$2)prefixed with a **#.**
```
IValidation orderIdList = worksheet.Range["L6"].Validation;
orderIdList.Add(ValidationType.List, ValidationAlertStyle.Stop, ValidationOperator.Equal, "=$v$2#");
```
#### **Step 7 - Set the default values to dropdown and save the workbook**
Finally, set the default values to the dropdowns using the [_<span>Value</span>_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange~Value.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IRange~Value.html") property of the **IRange** interface and save the workbook using the [_Save_](https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook~Save.html "https://developer.mescius.com/document-solutions/dot-net-excel-api/docs/online/DS.Documents.Excel~GrapeCity.Documents.Excel.IWorkbook~Save.html") method of the **IWorkbook** interface as depicted in the code snippet below:
```
worksheet.Range["L3"].Value = "Paul Henriot";
worksheet.Range["L6"].Value = 10248;
workbook.Save("CustomerOrderHistoryReport.xlsx");
```
The generated Excel file with the smart dependent lists appears as illustrated in the gif below:
Download the [<span>complete sample</span>](https://cdn.mescius.io/umb/media/njilunbo/smartdependentlist.zip)<span>.</span><span></span>
## Conclusion
In conclusion, Excel's diverse array of strategies for crafting smart dependent lists is further complemented by the invaluable support provided by Document Solutions for Excel API (DsExcel). This powerful tool offers flawless Excel compatibility, extending over 450 built-in Excel functions. Leveraging this capability, users can effortlessly generate dependent lists and execute complex spreadsheet calculations, all without encountering any hassles in C#. | chelseadevereaux |
1,752,814 | 2024-02-02: Rearing for Launch | This week was dedicated to preparing for our launch. Our CEO and CSO had gone and created a UAT doc... | 0 | 2024-02-06T05:25:34 | https://dev.to/armantark/2024-02-02-rearing-for-launch-3il4 | devjournal | This week was dedicated to preparing for our launch.
Our CEO and CSO had gone and created a UAT doc full of bugs that should be fixed before we launch, so the offshore team was busy all week fixing the stuff that I'm not specialized in, i.e. the non-LLM stuff.
Otherwise, I did a bunch of research on RAG and persistent memory for the application. As it stands, the bot doesn't remember anything between page reloads, which is definitely not ideal. I'm going to have to work on making that a reality eventually.
I also looked into our ElevenLabs implementation, since it was taking an abnormally long time to generate messages. Even though it was already on a stream, which is what I thought was the culprit, it was being sent back to the frontend as a packet instead of as part of the websocket. So I deferred that to the offshore team again.
That same day I also did some research into prompt injection prevention, and found out there are several libraries for this, so I'm going to do that as well eventually down the line. We really do not want people gaming the system.
The next day, I worked on fixing an issue with the bot not sending a proper message after onboarding was finished. Before, the bot did not understand that it was being thrusted into its "main prompt" after coming out of the onboarding process, so it would think there was some weird hiccup. I managed to fix that by having an entirely different prompt in the system for that based off the original. I also partially parameterized that prompt so there isn't too much repetition. It will lay down the pipes for future refactoring.
The next day, Thursday, I took some time in a meeting to explain the inner intricacies of the LLM app, or at least my understanding of it since a lot of it was spaghetti. I would really like to get time to refactor the whole thing but we are in a time crunch.
After that, I set out to fix up some latter issues with regard to the LLM functionality. The first one was that the "reason" field for the todo list creation kept sticking itself into the todo list for some reason. I didn't get to finish by end of day on Friday, so I'm looking to finish that as soon as possible this week.
Anyway, that's all. Till next week, cheers. | armantark |
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1,752,869 | Why You Need a Retail Software Development Company | Introduction: The Importance of Retail Software Development in Today’s Digital Age The retail... | 0 | 2024-02-06T06:53:02 | https://dev.to/amoradevid/why-you-need-a-retail-software-development-company-3ij0 | webdev, appdevelopment, react, node | Introduction: The Importance of Retail Software Development in Today’s Digital Age
The retail industry is experiencing a massive transformation in today’s digital age. Customers are increasingly shopping online, expecting a seamless and personalized experience. Retailers must adopt technology and invest in retail software development to keep up with the competition.
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3. Increased sales and profitability: By improving efficiency, productivity, and the customer experience, retail software can help retailers increase sales and profitability.
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5. What are the different types of retail software?
Many different types of retail software are available, each with its unique features and benefits. Some of the most common types of retail software include:
Point-of-sale (POS) systems process transactions and manage customer data.
- Inventory management software: Inventory management software helps retailers track stock levels and avoid stockouts.
- E-commerce platforms: E-commerce platforms allow retailers to sell their products online.
- Customer relationship management (CRM) software: CRM software helps retailers manage their customer relationships.
- Data analytics software: Data analytics software helps retailers track and analyze their data to gain insights into their business.
- How to choose the right Retail Software
With many different retail software types available, choosing the right one for your business can take time and effort. Here are a few factors to consider:
1. Your business needs:
2. Your budget
3. Your technical expertise
4. Your plans
Read More: **[Top 10 Inventory Management Software Development Companies in 2024–25](https://www.linkedin.com/pulse/top-10-inventory-management-software-development-2024-25-hartley-uhvyc/)**
The Benefits of Hiring a Professional Retail Software Development Company
Hiring a professional retail software development company can offer multiple benefits for businesses operating in the retail industry. Here are some **[Key Advantages of Using Retail Inventory Management Software](https://www.ibrinfotech.com/blog/advantages-of-retail-inventory-management-software-development)**:
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8.Competitive Advantage: A custom retail software solution can give your business a competitive edge by offering unique features and functionalities that differentiate your services. That can attract more customers and improve your market position.
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10. Faster Time-to-Market: Experienced retail software development companies follow efficient development processes, allowing for more immediate delivery of the final product. This quick time-to-market can be crucial in gaining a competitive advantage and meeting business deadlines.
The Key Features to Look for in a Reliable Retail Software Development Company
Experience and Expertise in Retail
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Strong Team of Developers and Designers
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- The designers should be able to create user-friendly and reflexive interfaces.
Agile Development Methodology
- That will allow you to be more involved in the development process and provide feedback throughout the project.
- Agile development also helps ensure the software is delivered on time and within budget.
Clear Communication and Collaboration
- The company should be open and transparent in its communication with you.
- They should keep you updated on the project’s progress and promptly address your concerns.
- It is essential to choose a company that you feel comfortable working with and that you trust to deliver a high-quality product
Security and Scalability
- The company should take security seriously and take measures to protect your data.
- The software should be scalable so that it can grow with your business.
Support and Maintenance
- The company should offer ongoing support and maintenance for the software.
- That will help you to keep the software up-to-date and address any issues that may arise.
Cost and Value
- The company should offer competitive pricing.
- However, choosing a company based on value, not just price, is essential.
- Consider the total cost of ownership, including development, support, and maintenance.
Market Overview of Retail Software Development
According to evolvebi.com , The Retail Intelligence Software Market is projected to witness substantial growth, with an anticipated market size of USD 24.74 Billion by the year 2033. In 2023, the industry already accounted for USD 6.68 Billion, and it is forecasted to experience a steady expansion at a compound annual growth rate (CAGR) of 6.16% from 2023 to 2033.
Selecting the Right Retail Software Development Company:
Selecting the right retail software development company is essential for the success of your business. Here are vital considerations to help you make an informed decision and will help you get the ultimate **[Retail CRM Software Development Services](https://www.ibrinfotech.com/solutions/retail-crm-software-development-services)**.
1. Industry Experience
2. Portfolio and Case Studies
3. Technology Expertise
4. Customization Capabilities
5. Scalability
6. Integration Abilities
7. Security Measures
8. User Experience (UX) Design
9. Mobile-Friendly Solutions
10. Support and Maintenance
11. Cost and Timeline
12. Communication and Collaboration
13. Legal and Contractual Aspects
Considering these factors, you can make a more informed decision when selecting a retail software development company that aligns with your business goals and requirements.
**Conclusion:**
Investing in a reliable retail software development company is a strategic move that significantly contributes to the success of your business. The retail industry is evolving, and staying competitive requires embracing technology to improve efficiency, customer experience, and overall business operations.
A reputable **[software development company](software development company)** specializing in retail solutions can offer tailored, innovative software that aligns with your business needs. It may include point-of-sale systems (POS), inventory management, customer relationship management, and e-commerce platforms. You can gain a competitive edge in the market by leveraging advanced technologies, such as artificial intelligence, data analytics, and cloud computing.
Furthermore, the right software development partner will provide continued support and updates to ensure that your retail systems remain robust and up-to-date with the latest industry standards.
In conclusion, investing in a dedicated retail software development company is a strategic investment that can pave the way for sustained business success. It positions your company to navigate the challenges of the modern retail landscape, meet customer expectations, and achieve long-term growth in a competitive market. | amoradevid |
1,752,887 | The Intersection of Energy Efficiency and Electric Plugs & Sockets Market | Introduction In the rapidly evolving landscape of energy efficiency, the Electric Plugs &... | 0 | 2024-02-06T07:23:54 | https://dev.to/nmsc/the-intersection-of-energy-efficiency-and-electric-plugs-sockets-market-4f7n | electricplugsandsocketsmarket, semiconductor, electronics |
**Introduction**
In the rapidly evolving landscape of energy efficiency, the **[Electric Plugs & Sockets Market](https://www.nextmsc.com/report/electric-plugs-and-sockets-market)** emerges as a pivotal player. This article delves deep into the intersection of these two realms, unraveling the profound impact on technology, sustainability, and consumer choices. Let's embark on a journey through the intricate web where innovation meets environmental consciousness.
**Request for a free sample PDF report**: [https://www.nextmsc.com/electric-plugs-and-sockets-market/request-sample](https://www.nextmsc.com/electric-plugs-and-sockets-market/request-sample)
**_Navigating the Landscape_**
**Understanding Energy Efficiency**
Embarking on the energy efficiency journey is synonymous with navigating a pathway towards sustainability. It's not merely about consuming less energy but optimizing its usage. This section explores the critical facets of energy efficiency, highlighting the need for sustainable practices.
**Evolution of Electric Plugs & Sockets**
Witness the transformation of electric plugs and sockets from mere connectors to sophisticated devices. Delve into the historical evolution and technological advancements that have paved the way for a seamless and energy-efficient electrical connectivity experience.
**_The Synergy Unveiled_**
**Smart Plugs: The Future Connectors**
Enter the realm of smart plugs, where innovation intertwines with energy efficiency. Discover how these intelligent connectors not only provide convenience but also contribute significantly to reducing energy consumption, making them a cornerstone of the modern smart home.
**Sustainable Materials in Plug Manufacturing**
Explore the eco-friendly side of the Electric Plugs & Sockets Market. This section sheds light on manufacturers' shift towards sustainable materials, emphasizing the role of recycled and biodegradable components in reducing the environmental impact.
**_Efficiency in Practice_**
**Energy-Efficient Appliances and Plug Compatibility**
Dive into the compatibility between energy-efficient appliances and advanced plugs. Uncover the synergy that enhances the overall efficiency of electronic devices, promoting a sustainable and cost-effective lifestyle.
**Regulatory Landscape: Driving Efficiency Standards**
Navigate through the intricate web of regulations shaping the Electric Plugs & Sockets Market. Understand how regulatory frameworks drive manufacturers towards producing energy-efficient solutions, fostering a global commitment to sustainability.
**FAQs - Unraveling Queries**
_**Are Smart Plugs Compatible with All Devices?**
Absolutely! Smart plugs are designed with universal compatibility, ensuring seamless integration with a wide array of devices, from household appliances to advanced gadgets._
_**How Do Sustainable Materials Benefit the Environment?**
Sustainable materials in plug manufacturing significantly reduce the carbon footprint, promoting eco-friendly practices and contributing to a healthier environment._
_**Can Energy-Efficient Plugs Lower Electricity Bills?**
Certainly! The integration of energy-efficient plugs can lead to substantial reductions in electricity bills, aligning with both financial prudence and environmental responsibility._
_**What Drives the Shift Towards Sustainable Plug Manufacturing?**
The growing awareness of environmental issues and consumer demand for eco-friendly products is a significant driver for manufacturers to adopt sustainable practices in plug production._
_**Are There International Standards for Energy-Efficient Plugs?**
Yes, various international standards, such as the Energy Star program, guide manufacturers in producing energy-efficient plugs, ensuring a standardized approach globally._
_**How Can Consumers Contribute to Energy Efficiency at Home?**
Simple actions like turning off appliances when not in use, upgrading to energy-efficient devices, and utilizing smart plugs go a long way in contributing to energy efficiency at home._
**Conclusion**
As we stand at the crossroads of innovation and sustainability, the synergy between energy efficiency and the Electric Plugs & Sockets Market becomes increasingly apparent. Embracing smart solutions, sustainable practices, and regulatory frameworks will undoubtedly shape a future where connectivity and environmental responsibility coexist harmoniously.
| nmsc |
1,752,910 | Shall we check pointer for NULL before calling free function? | The short answer is no. However, since this question keeps popping up on Reddit, Stack Overflow, and... | 0 | 2024-02-06T08:14:46 | https://dev.to/anogneva/shall-we-check-pointer-for-null-before-calling-free-function-396b | cpp, programming, learning | The short answer is no\. However, since this question keeps popping up on Reddit, Stack Overflow, and other websites, it's time to address the topic\. There are a lot of interesting things to ponder over\.
## The free function
The *[free](https://en.cppreference.com/w/c/memory/free)* function is declared in the *<stdlib\.h\>* header file as follows:
```cpp
void free( void *ptr );
```
The function frees the memory buffer that was previously allocated using the *[malloc](https://en.cppreference.com/w/c/memory/malloc)*, *[calloc](https://en.cppreference.com/w/c/memory/calloc)*, *[realloc](https://en.cppreference.com/w/c/memory/realloc)*, and *[aligned\_alloc](https://en.cppreference.com/w/c/memory/aligned_alloc)* functions\.
If *ptr* is a null pointer, the function does nothing\.
So, there's no need to check the pointer before calling *free*\.
```cpp
if (ptr) // a redundant check
free(ptr);
```
Such code is redundant because the check serves no useful purpose\. If the pointer is null, you can safely pass it to the *free* function\. The developers of the C standard deliberately chose this:
> **cppreference\.com: free**
>
> The function accepts \(and does nothing with\) the null pointer to reduce the amount of special\-casing
If the pointer is non\-null but still invalid, then the check doesn't protect against anything\. An invalid non\-null pointer is still passed to the *free* function, resulting in undefined behavior\.
> **cppreference\.com: free**
>
> The behavior is undefined if the value of ptr does not equal a value returned earlier by *malloc\(\)*, *calloc\(\)*, *realloc\(\)*, or *aligned\_alloc\(\)* \(since C11\)\.
>
> The behavior is undefined if the memory area referred to by ptr has already been deallocated, that is, *free\(\)*, *free\_sized\(\)*, *free\_aligned\_sized\(\)*, or *realloc\(\)* has already been called with ptr as the argument and no calls to *malloc\(\)*, *calloc\(\)*, *realloc\(\)*, or aligned\_alloc\(\) resulted in a pointer equal to ptr afterwards\.
So, it's possible and it's better to write simply:
```cpp
free(ptr);
```
## Where do questions about preliminary pointer checking come from?
Documentation for the *free* function explicitly states that you can pass a null pointer to it and it's safe\. However, discussions on this topic continue to appear on various websites\. Questions fall into two categories\.
**Beginners' questions\.** These types of questions are the most common\. It's simple: people are just learning programming and haven't yet figured out when to check pointers and when not to\. A simple explanation is enough for them\. [When you allocate memory using malloc, check the pointer](https://pvs-studio.com/en/blog/posts/cpp/0938/)\. Otherwise, dereferencing a null pointer may result in undefined behavior\. Before the memory is freed \(using *free*\), there's no need to check the pointer, because the function does that itself\.
Well, that's it\. Unless you can advise a beginner to use an [online analyzer](https://pvs-studio.com/en/blog/posts/cpp/0959/) to find out what's wrong with their code faster\.
**Questions asked by experienced and overly meticulous programmers\.** This is where things get interesting\. These people know what's in the documentation\. However, they still ask because they aren't sure that calling *free\(NULL\)* is always safe\. They worry about compiling their code on very old systems, where *free* doesn't guarantee safe null pointer handling\. Or that a particular third\-party library that implements *free* in a non\-standard way \(by not checking for *NULL*\) may be used\.
We can discuss the theory\. In reality, however, it doesn't make sense\.
Let's start with ancient systems\. Firstly, it's not that easy even to find such a system\. The first C89 standard states that the *free* function must safely handle *NULL*\.
> C89: 4\.10\.3\.2 The free function\.
>
> The free function causes the space pointed to by ptr to be deallocated, that is, made available for further allocation\. **If ptr is a null pointer, no action occurs**\.
Secondly, if you encounter a "pre\-standard" system, you probably won't be able to build your application for a variety of reasons\. I also doubt you would ever need to do that\. The issue seems far\-fetched\.
Now, imagine that the system isn't prehistoric but, let's say, special\. An unusual third\-party library of system functions, which implements the *free* function in its own way: you can't pass *NULL* to\.
In that case, broken *free* isn't your biggest problem\. If one of the basic language functions is broken in the library, then you have so many other broken things to worry about besides the safe call to *free*\.
It's like getting into a DIY car with brakes that don't work, a jammed steering wheel, no rearview mirrors, and worrying about whether the terminals \(contacts\) are securely connected to the battery\. Terminals are important, but they're not the problem, the situation as a whole is\.
Sometimes the topic of preliminary pointer checking is discussed from the code micro\-optimization perspective: "You can avoid calling the *free* function if you check the pointer yourself"\. This is a case where perfectionism is definitely working against you\. We'll explore this idea in more detail below\.
## Cringey macro
The most useless and potentially dangerous thing you can do is to implement pointer check using such a macro:
```cpp
#define SAFE_FREE(ptr) if (ptr) free(ptr)
```
We even have an interview question: "What's wrong with this macro?" **Everything is wrong with it\.** It seems that such a macro shouldn't exist in reality, but we've encountered it in projects\. Let's take it apart piece by piece\.
**Firstly, this macro is a redundant entity\.**
As I said earlier, the *free* function safely handles null pointers, and this check doesn't provide any additional safety when working with pointers\.
**Secondly, this macro is also redundant in terms of micro\-optimizations\.**
I read in the comments that the additional check optimizes the code a bit, since the compiler doesn't have to make an expensive call to the *free* function\. I think this is nonsense, not an optimization\.
The cost of the function call is exaggerated\. In any case, it's nothing compared to resource\-intensive operations like allocating and deallocating memory buffers\. When it comes to optimization, it's worth working on reducing the number of memory allocation operations instead of doing the check before calling the *free* function\.
The standard scenario in programming is to successfully allocate memory and then free it again\. Null pointers passed to *free* are most likely special, rare, and non\-standard cases\. There's no point in "optimizing" them\. An additional check would most likely be a pessimization\. This is because two checks are now performed instead of one before memory is released\. Maybe the compiler will optimize it, but then it's even more unclear why all the fuss\. By the way, since we're talking about optimizations, the manual optimization using macros looks naive and useless\. It's better to write simple, understandable code instead of trying to do micro\-optimizations that a compiler does better than a human\.
I think this attempt at unnecessary optimization perfectly confirms Donald Knuth's famous statement:
> There is no doubt that the grail of efficiency leads to abuse\. Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs, and these attempts at efficiency actually have a strong negative impact when debugging and maintenance are considered\. We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil\.
**Thirdly, the macro causes errors\.**
When you use the macro, it's very easy to write incorrect code\.
```cpp
#define SAFE_FREE(ptr) if (ptr) free(ptr)
....
if (A)
SAFE_FREE(P);
else
foo();
```
The code doesn't look the way it works\. Let's expand the macro\.
```cpp
if (A)
if (P) free(P);
else
foo();
```
The *else* statement refers to the second *if* statement and is executed when the pointer is null\. Well, things don't work as intended\. The *SAFE\_FREE* macro turned out to be not so "SAFE"\.
There are other ways to accidentally create incorrect code\. Let's look at the code for cleaning up a two\-dimensional array\.
```cpp
int **A = ....;
....
int **P = A;
for (....)
SAFE_FREE(*P++);
SAFE_FREE(A);
```
Yes, the code is a bit far\-fetched, but it shows how dangerous the macro is when it deals with complex expressions\. One pointer is checked and the next pointer after it is freed:
```cpp
for (....)
if (*P++) free(*P++);
```
There's also an array overrun\.
All in all, it's bad\.
**Can we fix a macro?**
We can, although we don't need to\. Let's look at possible ways of fixing it for educational purposes only\. That's also one of our interview questions\.
First, we need to protect the macro from the *else* issue\. The easiest but most ineffective way is to add braces:
```cpp
#define SAFE_FREE(ptr) { if (ptr) free(ptr); }
```
The code we discussed above will no longer compile \(error: 'else' without a previous 'if'\):
```cpp
if (A)
SAFE_FREE(P);
else
foo();
```
So, we can use the following trick:
```cpp
#define SAFE_FREE(ptr) do { if (ptr) free(ptr); } while(0)
```
Now the code compiles again\. The first issue is resolved, but what about the re\-calculations? A recommended standard solution doesn't exist\. However, there are workarounds if you really want one\.
A similar issue arises when implementing macros such as *max*\. Here's an example:
```cpp
#define max(a, b) ((a) > (b) ? (a) : (b))
....
int X = 10;
int Y = 20;
int Z = max(X++, Y++);
```
21 instead of 20 will be written to the *Z* variable because the *Y* variable will have been incremented by the time it's selected:
```cpp
int X = 10;
int Y = 20;
int Z = ((X++) > (Y++) ? (X++) : (Y++));
```
To avoid this, you can use magic — the GCC compiler extension: [referring to a Type with typeof](https://gcc.gnu.org/onlinedocs/gcc/Typeof.html)\.
```cpp
#define max(a,b) \
({ typeof (a) _a = (a); \
typeof (b) _b = (b); \
_a > _b ? _a : _b; })
```
The point is to copy values into temporary variables and thus eliminate the repeated calculation of expressions\. The *typeof* operator is an analog of *decltype* from C\+\+, but for C\.
Again, please note that this is a non\-standard extension\. I don't recommend using it unless you really need to\.
Let's apply this method to *SAFE\_FREE*:
```cpp
#define SAFE_FREE(ptr) do { \
typeof(ptr) copy = (ptr); \
if (copy) \
free(copy); \
} while(0)
```
It works\. Even though we created terrible, unbearable, and actually unnecessary code to do it\.
A more elegant solution is to convert the macro to a function\. This way we can eliminate the issues discussed above and simplify the code:
```cpp
void SAFE_FREE(void *ptr)
{
if (ptr)
free(ptr);
}
```
Wait, wait, wait\! We're back to the function call again\! Except now, we have an extra function layer\. The *free* function does the same job of checking the pointer\.
So, the best way to fix the *SAFE\_FREE* macro is to remove it\!
## Zeroing pointer after free
There is one topic that has almost nothing to do with pointer checking, but let's discuss it as well\. Some programmers recommend zeroing the pointer after memory is freed\. Just in case\.
```cpp
free(pfoo);
pfoo = NULL;
```
You could say that the code is written in the [defensive programming](https://en.wikipedia.org/wiki/Defensive_programming) paradigm\. I'm talking about additional optional actions that sometimes insure against errors\.
In our case, if the *pfoo* pointer isn't used, there's no point in zeroing it\. However, we can do this for the following reasons\.
**Pointer access\.** If data is accidentally written to the pointer, it's not a memory corruption, but a null pointer dereference\. Such an error is detected and corrected more quickly\. The same thing happens when reading data from a pointer\.
**Double\-free\.** Zeroing the pointer protects against errors when the buffer is freed again\. However, the benefits aren't as clear as they first appear\. Let's look at the code that contains the error:
```cpp
float *ptr1;
char *ptr2;
....
free(ptr1);
ptr1 = NULL;
....
free(ptr1); // the ptr2 variable should have been used here
ptr2 = NULL;
```
A programmer made a typo: instead of writing *ptr2*, they used the *ptr1* pointer to free memory again\. Due to zeroing the *ptr1* pointer, nothing happens when you free it again\. The code is protected from the double\-free error\. On the other hand, zeroing the pointer hides the error deeper\. There's a memory leak that can be difficult to detect\.
Defensive programming is criticized because of such cases \(masking errors, replacing one error with another\)\. It's a big topic, and I'm not ready to dive into it\. However, I think it's a right thing to warn you about the downsides of defensive programming\.
**What's the best way to proceed if you decide to zero out pointers after freeing memory?**
Let's start with the dangerous way:
```cpp
#define FREE_AND_CLEAR(ptr) do { \
free(ptr); \
ptr = NULL; \
} while(0)
```
The macro isn't designed to be used this way:
```cpp
int **P = ....;
for (....)
FREE_AND_CLEAR(*P++);
```
One pointer is freed and the next pointer is zeroed out\. Let's polish the macro:
```cpp
#define FREE_AND_CLEAR(ptr) do { \
void **x = &(ptr); \
free(*x); \
*x = NULL; \
} while(0)
```
It does the trick, but frankly, this kind of macro isn't my jam\. I'd rather explicitly zero out the pointer:
```cpp
int **P = ....;
for (....)
{
free(*P);
*P = NULL;
P++;
}
```
The code above is too long, I don't like it as well\. There's no macro magic, though\. [I don't like macros](https://arne-mertz.de/2019/03/macro-evil/)\. The fact that the code is so long and ugly is a good reason to consider rewriting it\. Is it really necessary to iterate through and release pointers in such a clumsy way? Perhaps we could make the code more elegant\. This is a good reason to do some refactoring\.
## Conclusion
Don't try to solve made\-up problems in advance and just in case\. Write simple and clear code\.
## Additional links
1. [Simple, yet easy\-to\-miss errors in code](https://pvs-studio.com/en/blog/posts/cpp/1068/) \(that's an article about unnecessary and incorrect null pointer checking\)
1. [Null Pointer Dereferencing Causes Undefined Behavior](https://pvs-studio.com/en/blog/posts/cpp/0306/)
1. [Four reasons to check what the malloc function returned](https://pvs-studio.com/en/blog/posts/cpp/0938/)
| anogneva |
1,752,964 | Elevate Your Rollup Security: Tackle MEV Risks in Custom Layer2 Chains | The concept of decentralization that established a financial system which is worth roughly $2... | 0 | 2024-02-06T08:29:37 | https://www.zeeve.io/blog/elevate-your-rollup-security-tackle-mev-risks-in-custom-layer2-chains/ | rollups | <p>The concept of decentralization that established a financial system which is worth roughly $2 Trillion in just over a decade sounds simply majestic. However, the rate of adoption has triggered the need for alternate scaling solutions to help match the demand. That’s how layer2s like <a href="https://www.zeeve.io/rollups/">rollups</a> came into the picture. </p>
<p>But, in doing so, the ecosystem has been exposed to an erstwhile risk termed MEV attacks, which are compromising the ethos of decentralization yet again. In this article, we will dive deep to understand what MEV is and what the way out is to deal with the same for Layer2s. </p>
<p>This is quite important to discuss as the risk of MEV extraction is higher in layer2s compared to what it is in L1s. </p>
<figure class="wp-block-image aligncenter size-large"><a href="https://www.zeeve.io/rollups/"><img src="https://www.zeeve.io/wp-content/uploads/2024/01/Give-your-rollups-more-power-with-trusted-3rd-party-integrations.-1024x130.jpg" alt="" class="wp-image-58651"/></a></figure>
<h2 id="h-what-is-mev">What is MEV?</h2>
<p>In its erstwhile pristine form, MEV stood as Miner Extractable Value, where the miners would request transaction fees and block rewards as their motivation to mine the blocks. However, over time, the concepts were rescripted in a manner that compromised decentralization principles of transparency, privacy, and trustlessness when miners/<a href="https://www.zeeve.io/validator-nodes/">validators</a> (In <a href="https://www.zeeve.io/blog/a-complete-guide-on-proof-of-stake-pos-in-cryptocurrency/">PoS</a>) started to arbitrarily reorder transactions by resequencing them in a manner that could trigger front-running and back-running, which caused serious harm to the users. </p>
<p>Hence creating negative sentiments around MEV even though blockchains shifted from PoW to <a href="https://www.zeeve.io/blog/a-complete-guide-on-proof-of-stake-pos-in-cryptocurrency/">PoS</a>. But can’t we not just do away with the MEV? Why embrace it if it is evil? </p>
<h2 id="h-why-does-mev-matter">Why Does MEV Matter? </h2>
<p>Because MEV is a necessary evil that cannot be ignored. Why? Despite many MEV attacks like <a href="https://www.coindesk.com/business/2023/04/03/ethereum-mev-bot-gets-attacked-for-20m-as-validator-strikes-back/">this one</a> that happened in 2023, which had cost users a loss of $20 million, it is turning out into a necessary evil because a permissionless blockchain to prevent spamming on its network which might significantly increase the network activity and prohibit transactions, MEVs play a key role. Without an MEV, we might see the problem of Priority Gas Auction. </p>
<p>Yuga Labs OtherDeed’s Land Sale is a perfect example to quote here. In the absence of a specific sale format, the users had inundated the network with spammy transactions requesting inclusion for a gas fee of 2 <a href="https://www.zeeve.io/blockchain-protocols/deploy-ethereum-blockchain/">ETH</a>; however, all those transactions failed eventually, which significantly impacted the UX on the <a href="https://www.zeeve.io/blockchain-protocols/deploy-ethereum-blockchain/">Ethereum blockchain</a>. MEV averts this but it creates more problems than it solves in a <a href="https://www.zeeve.io/rollups/">rollup environment</a>. How?</p>
<h2 id="h-how-roll-up-are-struggling-under-the-mev-attacks">How Roll-up Are Struggling under the MEV Attacks?</h2>
<p>In the <a href="https://www.zeeve.io/rollups/">rollup</a> environment, the core objective of the ecosystem is to provide near-infinite scalability to the network. However, to do that, they have to settle for a single operator/sequencer, which should ideally arrange all the transactions as they occur. However, instead of that, what the Bots do is sniff out the possibility of a profit since they can easily see the content of the transaction, whether it is a buy or a sell. Now, what the bot would do is place a transaction immediately before or after the transaction to extract maximum value. </p>
<p>For example, if there’s a huge purchase of an asset x for example which will increase the price. The bot would place a transaction immediately before that transaction to maximize bulk purchases and sell the token thereafter. So, a transaction is placed before the victim transaction and after the victim transaction. In this way, the user might lose a lot of money and opportunity if the <a href="https://www.zeeve.io/rollups/">rollup</a> continues to do that. We have already seen such happenings where the users have lost over<a href="https://cointelegraph.com/news/sandwich-trading-bots-lose-bread-and-butter-in-25m-exploit" rel="nofollow"> $25 M</a> in funds due to the sandwich attack. </p>
<p>What if the roll-up environment wishes to avert the same through a FIFO approach? It will be a two-edged sword for the <a href="https://www.zeeve.io/rollups/">rollup ecosystem</a> because while using the FIFO method, the rollup must include all transactions as they occur. Now, the drawback of this approach is that ideally, it is not necessary that all the transactions that are ordered in a sequence would help extract maximum value. So, it might be the case that the rollups blockspace might remain underutilized while it has to process the transaction. In this way, it will make the efforts of sequencing disincentivizing. The need of the hour, as a result of <a href="https://www.zeeve.io/rollups/">rollups</a> is to devise a solution that safeguards the interest of the chain along with the users. </p>
<h2 id="h-how-can-rollups-deal-with-the-mev-problem">How Can Rollups Deal with The MEV Problem?</h2>
<h3 id="h-decentralising-the-sequencers">Decentralising the Sequencers:</h3>
<p>Through decentralized sequencers, it is possible to arrange transactions, restoring trust and transparency based on consensus instead of centralized sequencers dominating the array of arrangements of the transactions. Along with this, <a href="https://www.zeeve.io/blog/banking-the-unbanked-defi-promoting-financial-inclusion/">decentralized</a> sequencers also protect the rollup environment against single point of failures and malicious intrusions which protects the network against the MEV attacks. </p>
<p>As you can see from the above image, decentralized sequencers impart a trustless environment, immutability, censorship resistance, resistance to a single point of failure, and reduced intermediaries, which establishes a very high trust element but ideally achieves the same. They also expose one key point of failure, which is high latency and increasing cost because consensus from multiple nodes participating in the auction to finalize an order might slow down the process and compromise the scalability. Plus, a decentralized sequencer might not be necessary for all applications. </p>
<h3 id="h-using-some-anti-mev-tools">Using some anti-MEV tools</h3>
<p>There are many tools that can help you deal with MEV attacks, like TX Relay APIs and RFQs, but what Shutter is doing is something that one should look forward to. Let’s see how Shutter is helping deal with the MEV attacks on <a href="https://www.zeeve.io/rollups/">rollups</a> without using any decentralized sequencer sets. </p>
<h3 id="h-what-shutter-is-doing-in-this-regard">What Shutter is Doing In This Regard? </h3>
<p>Shutter Network is all set to provide MEV protection to all the <a href="https://www.zeeve.io/rollups/">rollups</a> on the <a href="https://www.zeeve.io/blockchain-protocols/deploy-ethereum-blockchain/">Ethereum chain</a> through its Distributed Key Generation (DKG) scheme in its rollup sequencer mechanism. With this upgrade, all the information passed to the sequencers through the mempool by the searchers is encrypted through Dark Forest until it passes the sequencer step. The Dark Forest will run all the transactions in the order of the encryption-proof keys in the following manner. </p>
<p> Source: Shutter Network</p>
<p>Now, these encrypted keys will be shared with the Keypers responsible for assessing the authenticity of the order of the transactions. If they find that any transaction is off-track or not in order, they will run the proofs and match the same with the Merkle Hash and followed by that, it will be added to the block. Now, the <a href="https://www.zeeve.io/rollups/">rollup environment</a> will check the batches and match the same with the DKG or Distributed Key Generation Protocol, and if they are in order, it will trigger the state change on the rollup. Now, if some of the rollups, if they are using a different sequencer set, they will have to decentralize their sequencer sets using the Shutter DKG else they will have to compromise on latency because shutterized <a href="https://www.zeeve.io/rollups/">rollups</a> give the privilege of using a centralized rollup solution without compromising on security and privacy. </p>
<h2 id="h-zeeve-raas-offers-ready-made-integrations-to-add-custom-functionality-in-your-layer2-rollups">Zeeve RaaS offers ready-made integrations to add custom functionality in your layer2 rollups</h2>
<p>Want to integrate tools like Shutter Network with your <a href="https://www.zeeve.io/appchains/optimistic-rollups/">Optimistic</a> or <a href="https://www.zeeve.io/appchains/polygon-zkrollups/">ZK Rollups chain</a>? <a href="https://www.zeeve.io/">Zeeve</a> integration partners let you do that. Instead of building naked <a href="https://www.zeeve.io/rollups/">rollups</a>, you can augment your rollup capabilities with easily pluggable components like Alt data availability layers, shared sequencers, decentralized oracles, account abstraction SDKs, indexers, and many more <a href="https://www.zeeve.io/integrations/">additional integrations</a>. You can choose to build with any rollups framework using Zeeve <a href="https://www.zeeve.io/rollups/">Rollups-as-a-Service</a>, including <a href="https://www.zeeve.io/appchains/polygon-zkrollups/">Polygon CDK</a>, <a href="https://www.zeeve.io/appchains/zksync-hyperchains-zkrollups/">zkStack</a> from zkSync, <a href="https://www.zeeve.io/appchains/arbitrum-orbit-rollups/">Arbitrum Orbit</a>, or <a href="https://www.zeeve.io/appchains/optimistic-rollups/">OP Stack</a>, and choose your other modular components. <a href="https://www.zeeve.io/">Zeeve</a> also offers a 1-click sandbox and fully managed deployments for <a href="https://www.zeeve.io/rollups/">rollups</a> and <a href="https://www.zeeve.io/appchains/">appchains</a>. <br>Have further questions? Not quite sure what infrastructure might suit your needs? <a href="https://www.zeeve.io/talk-to-an-expert/">Reach out to us</a>. Our experts can help you decide based on your needs.</p> | zeeve |
1,752,985 | Navigating WordPress Website Maintenance Costs: A Comprehensive Guide | Title: Demystifying WordPress Website Maintenance Costs: A Comprehensive Guide ... | 0 | 2024-02-06T09:03:31 | https://dev.to/jamesmartindev/navigating-wordpress-website-maintenance-costs-a-comprehensive-guide-4ln2 | webdev, wordpress, maintenance | Title: Demystifying WordPress Website Maintenance Costs: A Comprehensive Guide
### Introduction
In the ever-evolving digital world, maintaining a WordPress website isn't just a one-time affair. It requires ongoing attention, updates, and optimizations to ensure it remains secure, functional, and competitive. However, navigating the landscape of WordPress website maintenance costs can be challenging, with various factors influencing the pricing structures. In this detailed guide, we'll delve deep into the world of WordPress maintenance costs, shedding light on the intricacies and factors that contribute to pricing.
### Understanding the Scope of WordPress Maintenance
Before we dive into the costs, it's essential to grasp the scope of **[WordPress maintenance](https://wpeople.net/service/wordpress-maintenance-support/)**. It encompasses a broad range of tasks aimed at keeping your website running smoothly and securely. These tasks include:
1. **Core Updates:** Regular updates to the WordPress core to ensure the latest features, bug fixes, and security patches are applied.
2. **Plugin and Theme Updates:** Keeping plugins and themes up to date to maintain compatibility, security, and performance.
3. **Security Measures:** Implementing security protocols such as malware scanning, firewalls, and regular backups to safeguard against threats.
4. **Performance Optimization:** Improving website speed, responsiveness, and overall performance to enhance user experience and SEO rankings.
5. **Content Management:** Adding, updating, and managing website content to keep it fresh, relevant, and engaging.
6. **Technical Support:** Providing assistance and troubleshooting for any issues that may arise with the website.
### Factors Influencing WordPress Maintenance Costs
Several factors influence the costs associated with maintaining a WordPress website:
1. **Scope of Services:** The breadth of services included in a maintenance package is a significant determinant of cost. Basic packages may cover essential updates and backups, while comprehensive packages include additional services such as security monitoring, performance optimization, content management, and technical support.
2. **Frequency of Updates:** The frequency of updates and maintenance tasks varies based on the complexity of the website, the number of plugins and themes used, and the level of activity on the site. Websites requiring frequent updates may incur higher maintenance costs.
3. **Size and Complexity of the Website:** Larger websites with more pages, functionality, and customizations typically require more time and effort to maintain, resulting in higher costs. Additionally, websites with intricate designs or custom functionality may require specialized maintenance services, impacting costs.
4. **Customization and Integration:** Websites that have been heavily customized or integrated with third-party services may require additional **[maintenance](https://wpeople.net/how-to-fix-wordpress-stuck-in-maintenance-mode/)** to ensure compatibility, security, and functionality. Customizations and integrations can add complexity to the maintenance process and may incur extra costs.
5. **Quality of Service Provider:** The quality and reputation of the service provider offering WordPress maintenance services can influence the cost. Established agencies with a track record of delivering high-quality services may charge higher fees compared to freelancers or less experienced providers.
6. **Additional Services:** Some maintenance packages may include extra services such as SEO optimization, content creation, graphic design, and digital marketing. While these services add value, they also contribute to increased maintenance costs.
### Exploring Cost Structures
WordPress website maintenance costs can be structured in various ways:
1. **Monthly Retainer:** Many maintenance service providers offer monthly retainer packages, where clients pay a fixed fee each month for ongoing maintenance services. The cost of the retainer depends on the scope of services included and the level of support provided.
2. **Hourly Rate:** Some service providers charge an hourly rate for maintenance services, billing clients based on the time spent on updates, troubleshooting, and support. Hourly rates vary depending on the expertise and experience of the provider.
3. **One-Time Fee:** For smaller, one-time maintenance tasks like website audits or security checks, service providers may charge a one-time fee instead of an ongoing retainer. These fees are typically based on the complexity of the task and the time required to complete it.
4. **Custom Pricing:** In some cases, service providers offer custom pricing based on the specific needs and requirements of the client. Custom pricing allows for greater flexibility and can be tailored to accommodate unique circumstances or additional services.
### Understanding Average Costs
While the cost of WordPress website maintenance varies depending on the factors mentioned above, here's a rough estimate:
1. **Basic Package:** Basic packages, including essential updates and backups, typically range from $50 to $200 per month.
2. **Standard Package:** Standard packages, offering a broader range of services, range from $200 to $500 per month.
3. **Premium Package:** Premium packages, with comprehensive support and additional services, range from $500 to $2000 or more per month.
4. **Hourly Rates:** Maintenance tasks billed hourly can range from $50 to $200 per hour.
5. **One-Time Fees:** One-time fees for specific tasks may range from $100 to $500 or more.
### Conclusion
Investing in regular maintenance for your WordPress website is crucial for ensuring its longevity, security, and performance. While the costs associated with maintenance may vary, it's essential to consider the value it brings in terms of user experience, search engine rankings, and overall business success. By understanding the factors influencing maintenance costs and selecting a service provider that aligns with your needs and budget, you can ensure your WordPress website remains in top-notch condition for years to come.
### Final Thoughts
**[WordPress Website Maintenance](https://wpeople.net/wordpress-website-maintenance-guide-essential-tips-for-keeping-your-custom-site-healthy-in-2024/)** involves a combination of technical expertise, ongoing effort, and financial investment. By carefully assessing your website's needs, understanding the factors influencing maintenance costs, and selecting a suitable service provider, you can ensure your website remains secure, efficient, and competitive in today's digital landscape. Remember, proactive maintenance is key to maximizing the performance and longevity of your WordPress website. | jamesmartindev |
1,753,012 | Rayobyte Vs. IPBurger In 2024: Which One Is Better For Your Needs? | Rayobyte Vs. IPBurger In 2024: Which One Is Better For Your Needs? In the ever-evolving technology... | 0 | 2024-02-06T09:36:21 | https://dev.to/lunaproxy/rayobyte-vs-ipburger-in-2024-which-one-is-better-for-your-needs-n32 | Rayobyte Vs. IPBurger In 2024: Which One Is Better For Your Needs?
In the ever-evolving technology industry, Rayobyte and IPBurger, as two emerging brands, have attracted much attention.
They are all committed to providing users with efficient and convenient services, but there are some differences in product features, performance parameters, user experience and price.
This article will provide a comprehensive comparison between the two brands so that you can make an informed choice in 2024.
1. Comparison of product features
Rayobyte and IPBurger each have their own strengths and weaknesses in terms of product features. Rayobyte has won the favor of users with its excellent performance and stability, while IPBurger has attracted a large number of users with its rich functions and diverse configuration options.
Rayobyte's product features: Rayobyte focuses on product performance and stability and is committed to providing users with efficient and reliable services. Its products feature high-speed transmission and low latency, and are suitable for data processing of various scales and high-concurrency scenarios.
In addition, Rayobyte also provides a wealth of API interfaces and plug-ins to facilitate user integration and secondary development.
Product features of IPBurger: IPBurger focuses on product functions and configuration options, providing users with a wealth of choices.
Its products support a variety of protocols and ports, including http, and socks can be personalized according to user needs. In addition, IPBurger also provides a variety of package options to meet the needs of different users.
2. Comparison of performance parameters
Rayobyte and IPBurger also differ in terms of performance parameters. Rayobyte excels in speed and stability, while IPBurger provides more flexible configuration options and larger data transfer volumes.
Rayobyte's performance parameters: Rayobyte's products have excellent speed and stability and can meet a variety of high-intensity workloads.
Its powerful server cluster and optimized transmission protocol ensure efficient data processing and high concurrency capabilities. In addition, Rayobyte also provides real-time monitoring and alarm functions so that users can understand the status and performance of the server at any time.
IPBurger performance parameters: IPBurger provides flexible configuration options and larger data transmission volume to meet the needs of different users. Its products support multiple protocols and ports, enabling high-speed data transmission and efficient network connections.
In addition, IPBurger also provides rich statistical and analysis functions to help users better understand network conditions and performance bottlenecks.
3. User experience comparison
In terms of user experience, both Rayobyte and IPBurger focus on providing simple, easy-to-use interfaces and friendly customer service. But there are some differences between them in terms of ease of operation and personalization.
Rayobyte user experience: Rayobyte provides an intuitive and concise interface to facilitate user operation and management. Its products are very simple to install and use, requiring no complex configuration. In addition, Rayobyte also provides detailed documentation and tutorials to help users quickly master usage methods and techniques.
For personalized customization needs, Rayobyte also provides a wealth of API interfaces and plug-ins to facilitate users’ secondary development and integration.
IPBurger user experience: IPBurger also provides a friendly and easy-to-operate interface. Its products support multiple operating systems and devices, allowing users to use them anytime and anywhere.
At the same time, IPBurger also provides a variety of package options and personalized configuration options to meet the special needs of users. For problems encountered by users during use, IPBurger provides real-time online support and a professional customer service team to ensure that users can receive timely and accurate answers and technical support.
4. Price comparison
In terms of price, Rayobyte and IPBurger differ. Rayobyte's price is relatively high, but it provides excellent performance and stability; IPBurger provides a wealth of features and configuration options at a more reasonable price.
Price of Rayobyte: The price of Rayobyte’s proxy service is relatively high, but its performance and stability are excellent, making it worth it for users who need high-quality proxy services. Rayobyte also provides flexible pricing plans, so users can choose the appropriate package based on actual needs.
Price of IPBurger: The price of IPBurger is relatively affordable, and users can choose the appropriate package according to their own needs.
Its products support multiple protocols and ports, enabling high-speed data transmission and efficient network connections. In addition, IPBurger also provides rich statistical and analysis functions to help users better understand network conditions and performance bottlenecks.
5. Rayobyte and IPBurger alternative lunaproxy
LunaProxy excels in performance and stability. It provides efficient data transmission and reliable proxy services to ensure users have a smooth and stable experience in network applications. This is consistent with the performance and stability promises of Rayobyte and IPBurger, but LunaProxy may have better real-world performance.
[LunaProxy ](https://www.lunaproxy.com/?ls=forum&lk=?04)has powerful dynamic IP management capabilities. It allows users to use a different IP address with each request, which helps protect user privacy, avoid being blocked, and better disguise users' network activities. LunaProxy provides a cost-effective proxy service. Compared to Rayobyte and IPBurger, LunaProxy may offer similar functionality and performance at a lower price. .
6. Summary
As can be seen from the above comparison, both Rayobyte and IPBurger are trustworthy proxy service providers.
Rayobyte focuses on providing excellent performance and stability and is suitable for users who have high requirements for data transmission speed and quality; while IPBurger provides a wealth of functions and configuration options and is suitable for users who pay more attention to personalized needs.
Lunaproxy not only provides efficient data transmission and reliable proxy services, but also provides cost-effective proxy services. For users looking for efficient, stable, and customizable proxy services,
LunaProxy is a choice worth considering. When choosing an proxy service provider, you should base it on your actual needs. No matter which brand you choose, you can get efficient and stable proxy services.
This article comes from the blog of lunaproxy official website：https://www.lunaproxy.com/blog/rayobyte-vs-ipburger-in-2024-which-one-is-better-for-your-needs.html | lunaproxy | |
1,753,060 | Job Search Pain Relief | Finding a new job is painful! It's well-reported how time-consuming, stressful and soul-destroying... | 0 | 2024-02-06T17:55:07 | https://dev.to/cha53c/job-search-pain-relief-52e9 | jobsearchtips, developers, careeradvice | **Finding a new job is painful!**
It's well-reported how time-consuming, stressful and soul-destroying it can be. Trust me I've been there. Even though it's been a problem for years very little has improved. I'm afraid I can't fix it, but I do have a lot of experience in the recruitment industry and have hired hundreds of people for my team over the years, so I've put together some tips and insights for you. I hope these help you make the most of your time, have more success, and feel better when it's not going well.
Sadly, a lot of the tools and people that are trying to help you are just making things worse. In the UK response rates to applications from companies and recruitment agents are low. Only about 50% of applications will get a response. I would say that's generous. Often, you might get an initial response but the trail can still go cold with no explanation. Even a recruitment agent who told you their client was 'super excited about you' can suddenly just drop off the radar, never to be seen again.
Just a quick look at these stats from [Standout-CV.com](https://standout-cv.com/job-interview-statistics), will show you what you are in for:
- Only 2% of candidates who apply for a job are selected to attend a job interview.
- Employers will interview an average of 6 candidates for every job vacancy they advertise.
- The average interview process in the UK takes 27.5 days to complete.
- The average time for employers to contact candidates with feedback after an interview is 12 days.
- On average it takes 3 weeks for an official job offer to be made in writing.
- More than half of all candidates are rejected at the first interview stage.
- An average job interview will last between 30 – 45 minutes.
- The most common reason why a candidate would fail a job interview is a lack of understanding of the role.
- 78% of candidates say they find it difficult to find information about companies before the interview.
Of course, some companies are better, but some are a lot worse, and in most cases, every application runs into at least one of these problems, and those are the ones that go smoothly. The stats match my experience, both as a candidate applying for jobs and as a hiring manager getting frustrated at how long it takes to hire someone. The problem is so well known that, ironically, companies rely on your reluctance to find another job when reviewing salaries, and yearly bonuses, even though they to hire themselves. Somehow the pain continues.
If everyone wants a fast, pain-free recruitment process what causes all the problems and delays?
When searching and applying for jobs you are going to interact with a lot of tools, platforms and people, and there are many more behind the scenes. Additionally, all of these are entwined in a complex web for processes, policies and, of course, laws.
Let's have a look at some of these:
- To start with, you're going to use several job search and social platforms in your quest. They all work differently and have their quirks.
- Companies and recruiters use search tools on these platforms to find you and your CV. They are typing in keywords and don't always look at the details in the search results before spamming you with a message.
- Then, there are recommendation engines, the AI, working tirelessly - though not always intelligently, sending you and recruiters recommendations for jobs and candidates, best on some criteria they don't tell you about.
- Most companies use an Application Tracking System (ATS) to track your application. These vary in functionality and often don't fit well with a company's recruitment processes, slowing things down. For example, some don't even integrate with email or instant message tools, so you have to keep logging and searching to see if the status has changed.
- The approval and sign-off processes in hiring companies can be a real pace killer. I've known it weeks to get an offer approved - of course, the candidate was long gone by then.
- Availability of reviewers and interviewers and even your availability, results in a lot of elapsed time while someone tries to align these
- Availability of interview rooms is even worse -- though COVID has taken the pressure off of this; a lot of interviews a now done over video calls.
- Monthly budgets and targets can get in the way. "They will have to start next month as we're over budget for this month already", Is a sentence you don't want to hear as a hiring manager, but it happens.
- Privacy laws such as GDPR are there to protect you, but the implementation of this can make it difficult even to share your CV before an interview.
The worst of all, and the most common reason it takes so long is people's inability to make a decision.
A lot of the above are in place to make the experience better, and more efficient but in reality their idiosyncrasies and interplay result in, frustration, an increase in your blood pressure, and a loss of motivation. The whole process of job hunting and headhunting is broken, so you can expect a rocky road. You will have to accept there will be a lot of noise, knockbacks, ghosting, and a few surprises along the way.
At the end of the day, it's a numbers game, especially in tech roles. You're likely going to have to make a lot of applications, talk to a lot of agents and do a few interviews before you get the offer you want. It's the only way to do it, start broad and narrow down.
## Pay Attention to the Tools You Are Using
Job Search Platforms or Job Boards, as they are affectionately known, are ubiquitous. They remain the largest marketplaces for candidates and companies and recruiters pay for access to these. Even so, they come with their problems, especially if you're not careful about how you use them.
Firstly, they can generate a lot of spam in your mailbox. Maybe not intentionally, but they do. I know a lot of the major Job Boards work hard to find you the best matches without spamming you, but they still do. What a person calls spam is subjective; you might prefer a lot of attention and be prepared to filter through yourself or you might want to keep the noise to a minimum and let the platform do the filtering for you. A lot of what you receive depends on the information you have provided and what you have subscribed or consented to.
To get the best out of these boards consider carefully what information you're providing. Some job search tools speed up things by asking for minimal information from you to get started, such as an email address and a link to your LinkedIn profile. This might reduce your initial workload, but it can result in a few surprises. These kinds of platforms usually fill in your profile from data scraped from other sources such as the LinkedIn URL you provided. This is fine if that's what you're expecting, and your profile is up to date. If not you'll get some unwanted jobs coming your way. Always check what you're providing is what you want them to see. Even if the information is correct check how they have filled in your profile. You might not be happy with how you're being represented. For example; sending you jobs based on skills you haven't used for 10 years. It's worth checking your profile from time to time and editing it if needed.
A more concerning feature is automatic applications, where the platform applies for jobs for you based on a matching algorithm. This can be helpful, but I've noticed that consent for this is sometimes subtly implied in the Terms and Conditions when you sign up. It might be just what you want to get yourself in front of companies when you don't have much time, but if you didn't realise you were signing up for it you'll get a lot of surprise calls from companies you've never heard of. Given that the most common reason for being rejected at an interview is a lack of understanding of the role, this can be a time waster as well as a spam generator. The main reason the platforms implement these features is not for the candidate's benefit, but to bump up the application stats to their clients because that's what they're selling to the hiring companies, that's how they monetise you. So be aware and use wisely.
### CV Parsing
When you upload a CV to a platform it's going to be 'parsed'. The text from the CV will be pulled apart by algorithms, categorised and stored in various parts of the system and used to create job recommendations for you among other things. In some systems, the information is added to your profile, but it's not that common, often what is stored from the CV parsing is not visible to you at all.
Even if the data on your CV is used to fill in your profile it might not be what you want, so always check through your details on the site. Also, check which CVs you have stored on the platform. If you have an old, out-of-date or alternative version of your CV it can cause irrelevant jobs to be sent to you. Either change or delete them. I advise you to only have one version of your CV on the same platform at any time to avoid confusion.
### Consent
Under the Data Protection Laws, you have the right to how your data is used in processing. Check carefully what you have consented to. This can make the difference between being spammed and not receiving anything at all. Make sure the consent options you've chosen match what you're expecting from the platform.
If you want your CV to be found by companies and recruiters in their searches you might have to give explicit consent. The same can apply to parsing and using information from your CV to fill in your profile or for other purposes. It's common for the consent for this use to be in the Terms and Conditions and implied when you sign up or upload a CV, but it's worth checking to ensure it's doing what you want.
Don't be afraid to leave a platform, if you don't like the way they use your data treat you. You can remove consent, delete your account, and if you're still not happy you can flex your legal rights. Under the data protection laws, you have the right to make a Subject Access Request to see all the data a company holds about you. You also have the right to be forgotten and can request your data to be deleted from their platform altogether. It's an extreme measure, but in some cases, it might be the best for you.
### One System, Many Job Boards
These days, a lot of job board brands run off the same system in the background. It's common in niche industries. In most cases, you will never notice, but some implementations are not so smart and they can cause confusion. Especially if you created different profiles for specific industries which share the same primary details such as your email address. The worst I've encountered was a niche brand which shared the same login credentials with the umbrella brand. I changed the password on the niche brand, and the following I spent 20 mins figuring out why the password was wrong. This is rare, a more common issue is receiving irrelevant job alerts. If that happens click around and see if you can find out who the board belongs to or is partnered with.
## Your CV
- Short CVs are better.
- Show what you know
- Highlight what you've done
- Avoid repetition
- Don't waste space with a Photo
- Don't be a victim of bias
### Is your CV Important?
Oh yeah, it's still the main commodity you're trading with. It's the CV that gets you to the interview, and it's going to pass through many hands and numerous systems before that. Even one job application to a medium-sized company can put your CV in front of 5 to 10 people, all before they've even met you, so it's important to give a good representation of yourself, in a way they can easily understand.
Note on job search platforms:
If you have a profile on one of these, check your details are up to date, and that what they are showing is what you want to be seen. Not all of them get this information from your CV. A lot don't, and even those that do often store the data separately from your profile. This can be especially true if you have multiple CVs uploaded to one platform. Even if they have filled in your profile from your CV check the profile data to make sure it represents you accurately. These discrepancies are often the reason you have so many unwanted job vacancies sent to you. Check that your profile data and your CV are saying the same thing about you.
Short CVs are better. Always! Stick to 2 sides, in a readable format. Don't squeeze in too much in and turn it into an unreadable essay. Put the most relevant impactful stuff on the first page. Show what you know. Focus on what you are good at now and the tools and tech you know best. Don't list everything you've ever used, seen or heard about.
Anything on your CV is likely to get asked about in an interview. If you find yourself making excuses for something you don't know much about you're wasting valuable interview time that could be used to make yourself shine instead. You only have a finite amount of time in the interview so use it well. If the interviewers don't learn enough about your relevant skills in the time they are going to reject you. There's no such thing as a maybe in the selection process. Plus, they'll be annoyed if they brush up on something to ask you a good question, only to find it doesn't belong on your CV in the first place. You should be able to talk confidently and with authority about anything on your CV. If you can't either leave it off or keep it to a minimum.
The stuff you don't know so much about or aren't as interested in will still be used by recommendation engines to send you jobs and found when recruiters are searching keywords in a CV database. I frequently receive emails from recruiters for roles that require skills I had 15 years ago.
The amount of detail you have in your CV depends a lot on your experience. When you are starting in a tech career you are not expected to have as much detail or knowledge on tools and languages as someone with 5 years of experience, so don't pad it out with stuff you don't know anything about in the hope of attracting attention. Sure, you will get a lot of attention, but you'll also be wasting your time on jobs you're unlikely to get. Focus on what you know, and the reasons they should hire you.
### Highlight what you've done
This is the most important part! This is what makes you you. Interviewers want to know what you've done, and more importantly how you did it. Being vague is the enemy. Whatever your level of experience highlighting things that make you stand out as a doer is the key. Think about tasks that gave you a good feeling about yourself when you did them. The things that gave you a sense of accomplishment, and those you had good feedback or were praised for. It can also be something that didn't go well, but you learned a valuable lesson from it. Interviewers love to hear a story of overcoming failure and learning from it - that's how we grow.
An example of being too vague is stating 'writing and testing software' under the responsibilities of a Software Engineer role. It's a given that's what software engineers do. Yet, I've read this thousands of times in CVs. It's a complete waste of space, it doesn't say anything about you, what level you're at or how you work.
Vague statements leave you open to the interviewer's imagination -- that's if you even get an interview -- they'll end up asking a lot of questions you probably can't answer well, which is going to end badly for you.
Be specific, highlight what you did and if possible, what the outcome was. If you work in a tech company it could be things like:
- Led a retro
- Tracked down a tricky production bug
- Refactored code that improved response times by 10x
- Removed tech debt by...
- Upgrade a framework version
- Presented the team's work at company gatherings
- Convinced the team to try a new approach
- Coach a colleague to help them pass a certification
- Found an innovative way to solve X
The list goes on. Think about what you've done that you want to talk about more and write a one-line teaser using an all-important doing word. It will make your CV stand out, and lead the interviewer down a path you want to go down. They will want to know more about how you did these, and that will make for a great interview for you.
Avoid Repetition
Repetition wastes space. You've only got 2 sides. Remove wanted repetition and pack in more good stuff. Excessive repetition can cause 'snowblindness' in reviewers, leading them to overlook crucial aspects of your CV resulting in you missing out on an interview, and a wasted application.
I've seen a lot of technical CVs which list every version of a tool or library the candidate has ever used or heard of. DON'T do this! It's wasting space. Stick to the relevant, most up-to-date skills. These are the most valuable to the interviewer. Keep less relevant, older info high level, and don't repeat it. Ancient history is interesting, but it won't get you the job.
Be careful about repetition in the structure of your CV. A well-organised, easy-to-follow CV is a must, but sometimes what looks satisfyingly orderly on the page can be lengthy and monotonous to read. As an example, don't write phrases like "date started" and "date finished" for every job in your history, it's just a lot of unnecessary words to read. Choose a format that is minimal, but clear.
### Don't waste space on a photo
No company, that I know of, has guidelines on what to look for in a photo as part of the selection process. For that reason alone I wouldn't waste time and space on it.
It also puts you at the mercy of the reviewer's biases, conscious or unconscious.
It can go either way. At best your warm smile might give the reviewer a fuzzy feeling and they put you through even though you don't have the right skills or experience. When that happens you usually find yourself, looking at a disgruntled interview panel, wondering how you got there. In the worst case, you might be negatively discriminated against based on your appearance. So just don't put your photo on there.
### Avoid being a victim of bias.
My advice is to avoid putting anything on your CV that can expose you to bias.
Certain facts about yourself can expose you to an unfair disadvantage. For that reason, these are classified as 'protected characteristics' under UK law. An employer cannot lawfully use these characteristics in their selection process. Protected characteristics include; age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex and sexual orientation.
It might be tempting to include this information on your CV for transparency or to give a more complete picture of yourself but it shouldn't used as part of the assessment so you're wasting precious space.
There are some exceptions where a protected characteristic will be relevant to the roles you are seeking, and including them can help you achieve a higher ratio of application to success. An example jobs that require you to drive a company vehicle, will probably have an age restriction because of the insurance. In such a case, putting your age might be useful.
If you think a characteristic might be relevant, then do your research and consider it carefully before putting it on your CV.
Most companies these days have implemented initiatives to improve diversity, equity and inclusion in their selection processes, but still, it creeps in. Everyone in the interview process at a company is likely to be under pressure, and struggle to make time to do everything and bias creeps in.
_Don't include this sort of information and avoid the risk altogether._
## Be Proactive
### Keep Track
You're probably not going to be using an Application Tracking System yourself, but you're going to make a lot of applications, on numerous platforms, and things soon get out of hand. You need a way to track the jobs you're interested in, the applications you've made and where you are in the process. A spreadsheet is all you need for this.
### Set Reminders
Set reminders to follow up on the application if you haven't heard by a certain date. It's all too easy to be passive and wait. Don't let the trail go cold, keep in touch and keep yourself front of mind.
### Make a Date
Set up a calendar just for your job search to make time for your search activities, not just booking interview reminders. If you're already busy with work, this will help you be prepared. And being prepared is what gets you results.
### Refine
Keep updating your CV and details on the job boards based on feedback. You should be able to get the email alerts more relevant with a bit of tweaking.
## Interview Prep
It's worth repeating, being prepared is the key to success. Interview prep is a whole topic in itself, but here are a few points to help you get ready.
- Make sure you have something to talk about for all the key points on your CV.
- Find out as much as you can about the company and role you are applying for
- Have some questions about them. Interviewers love this, and there's nothing worse than saying don't have any questions in early-stage interviews. At this stage, you should have, it'll look like you're not interested if you don't. So get the questions ready.
Practice is good preparation. If you haven't been in an interview for a while don't be too fussy about what you apply for to start with. If you wait for that dream job before applying you'll likely blow it in the interview. Be brave and get started as soon as you can. You can also practice with a friend or colleague who has done interviews before. You could try some online tools for this too, but in the end nothing beats a real interview.
## Recruitment Agents
Should you use them? Well, you don't have to, but you probably will. Once you start posting your details on the various platforms you are likely to get a lot of attention from them. In my opinion working with a good agent, one who understands you and their clients, is invaluable.
However, finding the ones that are right for you is challenging. It can be like taking on a zombie horde. There's a lot of churn in the recruitment business, and agents come a go pretty fast for various reasons, but being proactive will pay off here. Put in the time to build relationships, give them honest feedback, and filter out those who don't listen or put you forward for unsuitable jobs. If they don't know what's right for you after the first feedback from yourself or their client be ruthless and give them the elbow. Again, it's a numbers game, start with a lot of agents and keep whittling down until you have a few who are working hard for you. You'll save yourself a lot of time in the long run.
An agent who understands you and their client's needs might not send you a lot of opportunities, but the ones they do send are the ones worth spending time on. Plus, if they know you well they're likely to headhunt you in the future, so it's a worthwhile investment.
## Summary
- Be prepared
- Expect a bumpy ride - remember those stats
- Manage your profile on the platforms
- Be mindful of consent
- Get your CV right
- Be proactive
- Build relationships with the right people
- Review and tweak regularly
So what are you waiting for?
Get cracking, and get that perfect job! | cha53c |
1,753,065 | What strategies can individuals adopt to view work-life balance as an ongoing cycle rather than a one-time goal? | Embracing the Work-Life Balance Journey: Strategies for a Lifelong Cycle!... | 0 | 2024-02-06T10:41:36 | https://dev.to/yagnapandya9/what-strategies-can-individuals-adopt-to-view-work-life-balance-as-an-ongoing-cycle-rather-than-a-one-time-goal-2moh | webdev, workplace, javascript, programming | ## Embracing the Work-Life Balance Journey: Strategies for a Lifelong Cycle! ⚖️🔄
[
Introduction](https://fxdatalabs.com/)
In today's fast-paced world, achieving work-life balance has become a perpetual pursuit for many individuals. Yet, the concept of work-life balance often seems elusive, as it's mistakenly perceived as a destination rather than a journey.
Instead of viewing it as a one-time goal to achieve, adopting a mindset that sees work-life balance as an ongoing cycle can lead to greater fulfillment and well-being. In this comprehensive article, we'll explore strategies individuals can adopt to embrace work-life balance as a continuous journey, navigating the complexities of modern life while prioritizing personal well-being and professional success.
## Understanding Work-Life Balance as a Cycle
[
Traditional View:](https://fxdatalabs.com/)
Work-life balance is often seen as achieving an equal distribution of time and energy between work-related responsibilities and personal activities.
[Shift in Perspective:](https://fxdatalabs.com/)
Rather than a static equilibrium, work-life balance should be understood as a dynamic interplay between work, personal life, and well-being, where individuals continuously adapt to changing circumstances and priorities.
## Recognizing the Challenges:
[Blurring Boundaries:](https://fxdatalabs.com/)
Advances in technology have blurred the boundaries between work and personal life, making it challenging to disconnect from work-related tasks outside of traditional working hours.
[Pressure to Perform:](https://fxdatalabs.com/)
Society's emphasis on productivity and success can create pressure to prioritize work over personal well-being, leading to burnout and dissatisfaction. Strategies for Embracing Work-Life Balance as a Continuous Journey
## Setting Boundaries:
[Establishing Clear Work Hours:](https://fxdatalabs.com/)
Define specific work hours and stick to them as much as possible. Communicate these boundaries to colleagues and supervisors to manage expectations.
Designating "Off" Times:
Create designated times during the day or week where work-related tasks are off-limits, allowing for dedicated personal time and relaxation.
[Creating Physical Separation:](https://fxdatalabs.com/)
Designate a specific workspace for work-related activities to create a physical boundary between work and personal life, enhancing mental separation.
[
Prioritizing Self-Care:](https://fxdatalabs.com/)
Making Time for Activities: Schedule regular time for activities that promote well-being, such as exercise, hobbies, socializing, and relaxation.
[Setting Realistic Expectations:](https://fxdatalabs.com/)
Recognize that self-care is not selfish but essential for overall health and productivity. Prioritize self-care activities without guilt or judgment.
[Practicing Mindfulness:](https://fxdatalabs.com/)
Incorporate mindfulness practices into daily routines, such as meditation, deep breathing exercises, or journaling, to cultivate awareness and reduce stress.
## Fostering Flexibility:
[Embracing Flexibility in Work Arrangements:](https://fxdatalabs.com/)
Advocate for flexible work arrangements, such as remote work or flexible hours, to accommodate personal needs and preferences.
[Adapting to Changing Circumstances:](https://fxdatalabs.com/)
Recognize that work-life balance needs may evolve over time due to life changes, career transitions, or external factors. Be open to adjusting strategies accordingly.
## Building Support Networks:
[Seeking Social Support:](https://fxdatalabs.com/)
Cultivate relationships with friends, family, and colleagues who understand the importance of work-life balance and can provide emotional support and encouragement.
[
Networking with Like-Minded Individuals:](https://fxdatalabs.com/)
Connect with individuals who share similar values and priorities regarding work-life balance, both online and offline, to exchange insights and experiences.
## Reflecting and Reevaluating:
[Regular Self-Reflection:](https://fxdatalabs.com/)
Take time to reflect on personal values, goals, and priorities to ensure alignment with work-life balance objectives. Assess whether current strategies are effective and make adjustments as needed.
[Evaluating Progress:](https://fxdatalabs.com/)
Set periodic checkpoints to evaluate progress towards work-life balance goals. Celebrate achievements and identify areas for improvement to maintain momentum in the journey.
##
Embracing Imperfection:
[
Letting Go of Perfectionism:](https://fxdatalabs.com/)
Accept that achieving perfect work-life balance is unrealistic and unattainable. Embrace imperfection and focus on progress rather than perfection.
[
Practicing Self-Compassion:](https://fxdatalabs.com/)
Be kind to yourself when facing setbacks or challenges in balancing work and personal life. Treat yourself with the same compassion and understanding you would offer to others.
## Conclusion
In the quest for work-life balance, it's essential to shift our mindset from viewing it as a one-time goal to recognizing it as an ongoing journey. By adopting strategies that prioritize setting boundaries, prioritizing self-care, fostering flexibility, building support networks, reflecting and reevaluating, and embracing imperfection, individuals can navigate the complexities of modern life while maintaining a sense of balance and well-being.
Ultimately, work-life balance is not a destination to reach but a continuous cycle to embrace, allowing for personal growth, fulfillment, and resilience in the face of life's challenges.
For more insights into AI|ML and Data Science Development, please write to us at: contact@htree.plus| [F(x) Data Labs Pvt. Ltd.](https://fxdatalabs.com/)
#WorkLifeBalance #ContinuousJourney #HarmonyInLife #BalancedLiving ⚖️🌟 | yagnapandya9 |
1,753,071 | How to do Wireless & Networking in PCs and desktop | Wireless and networking on PCs and desktops involve connecting your computer to a network, either via... | 0 | 2024-02-06T10:46:56 | https://dev.to/micro-pc-tech-inc/how-to-do-wireless-networking-in-pcs-and-desktop-1ljm | Wireless and networking on PCs and desktops involve connecting your computer to a network, either via Wi-Fi or wired (Ethernet). Here are steps for both scenarios:
**Connecting to Wi-Fi:**
Check Wi-Fi Hardware:
Ensure that your desktop has built-in Wi-Fi capabilities. If not, you might need to purchase a Wi-Fi adapter compatible with your system.
**Install Wi-Fi Adapter (if necessary):**
If your desktop doesn't have built-in Wi-Fi, install the Wi-Fi adapter into an available PCIe slot on your motherboard.
Install Drivers:
After installing the Wi-Fi adapter, install the drivers that came with the adapter or download the latest drivers from the manufacturer's website.
**Enable Wi-Fi:**
If you have a built-in Wi-Fi adapter or have installed one, enable Wi-Fi on your desktop. You can usually do this through the system settings or a physical switch on your desktop.
**Connect to a Wi-Fi Network:**
Click on the Wi-Fi icon in the system tray (bottom-right corner of the screen).
Select your Wi-Fi network from the list and enter the password if required.
**Verify Connection:**
Open a web browser and visit a website to ensure that your desktop is connected to the Wi-Fi network.
**Connecting via Ethernet (Wired):**
Check Ethernet Port:
Confirm that your desktop has an Ethernet port. Most desktops have an onboard Ethernet port.
Connect Ethernet Cable:
Plug one end of the Ethernet cable into the Ethernet port on your desktop and the other end into a network switch, router, or directly into a modem.
Verify Connection:
Your desktop should automatically detect the Ethernet connection. Open a web browser and visit a website to ensure internet connectivity.
Additional Tips:
**Network Troubleshooting:**
If you encounter issues, check for any error messages and troubleshoot accordingly. Ensure that your Wi-Fi router or modem is functioning properly.
Network Settings:
Access your network settings in the operating system to configure specific details like IP address, DNS settings, etc.
Security:
If you are connecting to a Wi-Fi network, ensure it is secured with a password to prevent unauthorized access. Additionally, consider using encryption protocols like WPA2 or WPA3.
**Update Drivers:**
Regularly update your Wi-Fi or Ethernet drivers to ensure optimal performance and compatibility with the latest network standards.
By following these steps, you should be able to establish a wireless or wired network connection on your desktop computer.
For any Technical support call experts of **Micro Pc Tech Inc**.
| micro-pc-tech-inc | |
1,753,078 | Navigating the Go-to-Market Galaxy Workshop | Go to Market Workshop is a strategic session designed to guide businesses in successfully launching... | 0 | 2024-02-06T10:56:36 | https://dev.to/predictable/navigating-the-go-to-market-galaxy-workshop-1h06 | marketing, product | [Go to Market Workshop](https://www.predictableinnovation.com/go-to-market-workshop) is a strategic session designed to guide businesses in successfully launching and promoting innovative products or services. Predictable innovation refers to the ability of a company to systematically introduce and market new ideas that align with market demands. This workshop aims to streamline the go-to-market (GTM) process, ensuring a smooth and effective launch that maximizes the product's potential in the market.
The workshop typically begins with an assessment of the industry landscape and an identification of market trends. Understanding customer needs and preferences is crucial for creating innovations that resonate with the target audience. Participants engage in discussions and activities to analyze market dynamics, competitive landscapes, and potential barriers to entry.
The next phase focuses on crafting a robust go-to-market strategy. This includes defining the target market, establishing key messaging, and determining the most effective channels for reaching customers. Workshop attendees collaborate to develop a comprehensive plan that aligns with the organization's overall business objectives.
One key aspect of the workshop is exploring various scenarios and potential challenges that may arise during the GTM process. This proactive approach enables companies to anticipate and address issues before they become obstacles to success. Participants brainstorm contingency plans and refine their strategies to adapt to changing market conditions.
Additionally, the workshop may cover the utilization of innovative technologies, digital platforms, and data analytics to enhance the GTM strategy. By leveraging cutting-edge tools, businesses can gain a competitive edge and optimize their marketing efforts.
The culmination of the workshop involves creating a detailed action plan, complete with timelines, responsibilities, and key performance indicators. This roadmap serves as a guide for implementing the go-to-market strategy efficiently and measuring its success over time.
Ultimately, the Predictable Innovation - Go to Market Workshop empowers organizations to navigate the complexities of introducing new products or services, fostering a culture of innovation and ensuring a predictable and successful market entry. | predictable |
1,753,114 | Trust the Experts for Reliable Repair in Texas City | Maintaining functional heating systems is essential for the comfort and well-being of households,... | 0 | 2024-02-06T11:28:13 | https://dev.to/spearshvac/trust-the-experts-for-reliable-repair-in-texas-city-304c |
Maintaining functional heating systems is essential for the comfort and well-being of households, particularly in Texas City with its unpredictable weather. Like any other appliance, [heating systems](https://spearsairconditioning.com/tiki-island-hvac-air-conditioning-heating/), including furnaces, heat pumps, and boilers, can experience wear and tear, necessitating timely repairs.
Identifying signs of a malfunction, such as insufficient heat production or complete failure, is crucial. Issues like a faulty thermostat, clogged filters, or malfunctioning components can lead to further damage if not promptly addressed. Prompt repairs are vital not only for maintaining a warm and comfortable home but also for the health and safety of residents.
In colder climates, a malfunctioning heating system can expose residents to freezing temperatures, risking health hazards like hypothermia and promoting mold and mildew growth, triggering allergies and respiratory problems. Choosing a reputable heating system repair service in Texas City is essential, considering factors like a good reputation, certified technicians, and the availability of emergency services.
Regular maintenance, in addition to repairs, is key to preventing major issues and extending the system's lifespan. Professional technicians can inspect and clean the system, ensuring it operates efficiently. Importantly, investing in heating system repair can save money in the long run by addressing minor issues before they escalate into costly problems.
In summary, heating system repair is indispensable for the comfort, health, and safety of Texas City residents. Timely attention to issues, selection of a reliable repair service, and regular maintenance can collectively contribute to a well-functioning and cost-effective heating system. Don't wait until colder months; schedule maintenance checks or repairs promptly. | spearshvac | |
1,753,219 | Releasing LightningChart JS v.5.1 | It's been some time since I last posted an article here but what a best comeback than with a new... | 0 | 2024-02-06T13:01:24 | https://dev.to/lightningchart/releasing-lightningchart-js-v51-in3 | javascript, datascience, chartinglibrary, datavisualization | It's been some time since I last posted an article here but what a best comeback than with a new charting library update:
<u>[LightningChart JS v.5.1 has just been released!](https://lightningchart.com/news/releases/lightningchart-js-v-5-1/)</u>
For developers working with data applications, LightningChart JS is the best charting library solution featuring high-end technology for lightning-fast WebGL-rendered and GPU-accelerated charts.
## What's new in LightningChart JS v.5.1?
**Mesh Model 3D**
We’re introducing the new Mesh Model 3D chart type for rendering complex 3D geometries at high performance.
**Bar Charts**
We’re adding two new bar charts: stacked and grouped bar charts.
**New features**
- Percentage-based color lookup tables
- Axis Interval Restriction API (Beta)
- Axis Default Interval API (Beta)
- Date Time Axis – UTC mode (Beta)
**Introducing a new time series React component**
The <u>[react-time-series-chart](https://github.com/Arction/lcjs-react-template/tree/master/react-time-series-chart/#react-time-series-chart)</u> is a powerful open-source React component for interactive and heavy-duty Time Series Charts
This was LightningChart JS v.5.1 in a nutshell. For more information, refer to the [official release note](https://lightningchart.com/news/releases/lightningchart-js-v-5-1/).
---
## Get LightningChart JS
- [Free trial](https://lightningchart.com/js-charts/free-trial/)
- [Interactive examples & sample code](https://lightningchart.com/js-charts/interactive-examples/?isList=false)
---
Written by:
Omar Urbano | Software Engineer & Technical Writer
[Reach out to me via LinkedIn](https://www.linkedin.com/in/omarurbanocuellar/)
| lightningchart |
1,753,289 | Habilidades en informática en la nube para 2024 | La informática en la nube se ha convertido en una parte integral de la infraestructura de TI,... | 0 | 2024-02-06T13:52:03 | https://dev.to/scofieldidehen/habilidades-en-informatica-en-la-nube-para-2024-2a7o | principiantes, programación | La informática en la nube se ha convertido en una parte integral de la infraestructura de TI, experimentando un crecimiento masivo recientemente.
Según Gartner, el gasto de los usuarios finales en servicios en la nube pública se prevé que alcance los 591.800 millones de dólares en 2024. Esta rápida adopción de soluciones en la nube ha llevado a una enorme demanda de habilidades en informática en la nube. Dominar habilidades clave lo preparará para una exitosa carrera en la nube en 2024.
## Las 10 habilidades más demandadas en la nube
Aquí están las habilidades de computación en la nube más vitales para aprender en 2024:
## Dominio de plataformas en la nube
Adquirir experiencia en plataformas líderes como AWS, Azure y GCP es fundamental para operar en el panorama de la nube.
**Habilidades de AWS:**
- Aprenda los servicios básicos de computación, almacenamiento, redes, bases de datos y análisis de AWS. Los servicios clave incluyen EC2, S3, VPC e IAM.
- Comprenda la arquitectura de AWS compuesta por regiones, zonas de disponibilidad, ubicaciones perimetrales y centros de datos.
- Domine los modelos de precios de AWS como pago por uso, Savings Plans y Reserved Instances.
- Aprenda protocolos de seguridad como el cifrado KMS, WAF, Shield y Macie.
**Habilidades de Azure:**
- Aprenda servicios fundamentales y de gestión como Virtual Machines, Storage Accounts, Virtual Networking y Azure AD.
- Comprenda la arquitectura de Azure que abarca la infraestructura global, geografías, pares de regiones y zonas de disponibilidad.
- Comprenda los modelos de precios que involucran costos de recursos y tipos de servicio como IaaS, PaaS y SaaS.
- Explore los fundamentos de seguridad que cubren Azure Key Vault, Sentinel y el control de acceso basado en roles.
**Habilidades de GCP:**
- Descubra servicios informáticos, de almacenamiento, de redes y de big data como Compute Engine, BigQuery y Cloud Storage.
- Aprenda cómo las regiones y zonas brindan presencia geográfica y alta disponibilidad.
- Examine el modelo de precios de descuentos por uso comprometido.
- Comprenda el modelo de responsabilidad compartida de seguridad.
## Administración de servidores Linux y Windows
Agudice las habilidades de administración del sistema operativo para aprovisionar y operar la infraestructura en la nube de manera efectiva:
**Habilidades de Linux:**
- Domine habilidades como scripting de shell, administración de archivos, administración de usuarios, controles de procesos y configuración de redes.
- Aprenda herramientas de gestión de configuración como Ansible, Chef y Puppet.
- Comprenda técnicas de monitoreo y optimización del rendimiento.
- Solucione problemas de manera efectiva y fomente las capacidades de recuperación ante desastres.
**Habilidades de Windows Server:**
- Perfeccione la instalación del servidor, la configuración de Active Directory, la configuración de DNS/DHCP y las habilidades de Group Policy.
- Aprenda las mejores prácticas relacionadas con la seguridad, la asignación de almacenamiento de datos, el equilibrio de carga y el clúster de conmutación por error.
- Adquiera experiencia en Windows PowerShell para la automatización de tareas.
- Domine las habilidades de monitoreo y resolución de problemas.
## Infraestructura como código (IaC)
IaC, como Terraform y CloudFormation, es fundamental para automatizar la implementación y gestión.
**Habilidades de Terraform:**
- Aprenda habilidades como aprovisionamiento de infraestructura, orquestación de recursos e implementaciones multi-nube.
- Comprenda cómo administrar la infraestructura de manera segura, repetible y eficiente a través de código.
- Descubra técnicas para el control de versiones y la colaboración a escala.
**Habilidades de CloudFormation:**
- Aprenda a implementar y actualizar recursos en la nube de manera predecible a través de plantillas.
- Comprenda las capacidades en torno a la entrega continua y DevOps.
- Descubra cómo consolidar y reutilizar elementos de infraestructura.
## Scripting
Scripting une los componentes en la nube, permitiendo una gestión flexible:
**Scripting de Bash:**
- Domine el scripting de shell para combinar comandos para la automatización de tareas.
- Aprenda la navegación del sistema de archivos, la configuración de permisos y el manejo de procesos a través de scripts.
- Comprenda las mejores prácticas relacionadas con variables, funciones y manejo de errores.
**Scripting de PowerShell:**
- Aprenda la administración automatizada de servidores basados en Windows.
- Agilice la implementación de aplicaciones de gestión del sistema operativo.
- Comprenda los componentes clave: administración de tuberías, control de flujo y manejo de errores.
## Supervisión y observabilidad
El monitoreo proporciona visibilidad operacional, lo que facilita una gestión sólida.
Habilidades:
- Aprenda principios como métricas, registro y seguimiento de solicitudes distribuidas.
- Descubra herramientas de monitoreo nativas de la nube como Datadog, New Relic y CloudWatch.
- Comprenda técnicas de APM, monitoreo de infraestructura y análisis de registros.
- Desarrolle capacidades en torno a la alerta, visualización y resolución de problemas.
## Fundamentos de redes
Los conocimientos de redes son críticos para la conectividad y la seguridad.
Habilidades:
- Aprenda los fundamentos básicos de redes que abarcan TCP/IP, DNS, VPN, IPv4/IPv6.
- Comprenda los componentes de red en la nube como VPC, subredes, NACL y tablas de enrutamiento.
- Descubra mecanismos de seguridad de red como cifrado, cortafuegos y protección contra DDoS.
- Obtenga información sobre los conceptos y la implementación de equilibrio de carga.
## Contenedores y orquestación
Los contenedores y orquestadores como Docker y Kubernetes permiten implementaciones escalables:
Habilidades:
- Aprenda los fundamentos de Docker: imágenes, contenedores, registros y archivos de composición.
- Descubra la arquitectura de Kubernetes que abarca pods, nodos y clústeres.
- Comprenda conceptos de implementación como estado deseado, comprobaciones de estado y actualizaciones.
- Aprenda habilidades de administración para alta disponibilidad y escalabilidad.
- Explore capacidades adicionales como mallas de servicios, ingreso y observabilidad.
## **Programación**
## La programación genera automatización e innovaciones:
## Habilidades:
- Domine lenguajes como Python, Go y JavaScript para construir aplicaciones nativas en la nube.
- Aprenda el uso de SDK para integrar servicios en la nube en el código.
- Comprenda soluciones IaC como Terraform que expanden aún más las capacidades.
- Descubra metodologías de diseño como el desarrollo guiado por pruebas.
## Patrones de arquitectura en la nube
## Los patrones proporcionan mejores prácticas para soluciones altamente escalables:
## Habilidades:
- Aprenda arquitecturas de N niveles, orientadas a eventos y distribuidas, entre otros patrones.
- Comprenda principios clave como alta disponibilidad, tolerancia a fallas y eficiencia en costos.
- Descubra los principales principios de diseño en la nube de escala, rendimiento y operación.
- Evolucione continuamente sus habilidades en línea con las innovaciones tecnológicas.
## Seguridad en la nube
## Una seguridad sólida es fundamental para la confiabilidad en la nube:
## Habilidades:
- Aprenda el modelo de responsabilidad compartida y riesgos como acceso no autorizado y DDoS.
- Comprenda estándares de cumplimiento como SOC, ISO y PCI DSS.
- Domine el cifrado, la gestión de identidades, los cortafuegos y las herramientas antimalware.
- Fomente habilidades en torno a marcos de gobernanza, controles de acceso y auditoría.
Adquirir experiencia en estas habilidades de vanguardia mejorará sus perspectivas profesionales como un experto competente en computación en la nube.
## Resource
- [Github Actions](https://docs.github.com/en/actions)
- [What is CI/CD Beginners](https://www.redhat.com/en/topics/devops/what-cicd-pipeline)
- [Create your First CI/CD Pipeline using GitHub Actions](https://blog.learnhub.africa/2022/09/29/create-your-first-ci-cd-pipeline-using-github-actions/)
| scofieldidehen |
1,753,296 | Samsung Earbuds: Worth the Upgrade or Time to Switch Sides? | Introduction: In a world where technology is ever-evolving, the realm of audio accessories... | 0 | 2024-02-06T14:02:43 | https://dev.to/asktheproduct/samsung-earbuds-worth-the-upgrade-or-time-to-switch-sides-ne2 | tutorial, react, ai, career | ## Introduction:
In a world where technology is ever-evolving, the realm of audio accessories is no exception. Samsung, a tech giant renowned for its innovation, has introduced a series of earbuds that promise to elevate your auditory experience.
As users, we often find ourselves at crossroads when it comes to deciding whether to stick with a brand or explore new horizons. In this article, we delve into the world of Samsung earbuds, exploring the question: Are they worth the upgrade, or is it time to switch sides?
## The Evolution of Samsung Earbuds:
Samsung has been a front-runner in the tech race, and its foray into the earbud market is no different. From the original Galaxy Buds to the latest Galaxy Buds Pro, the journey has been marked by constant innovation. The question arises: has this evolution translated into a noteworthy listening experience?
## Sound Quality:
Let's cut to the chase – sound quality matters. The Samsung Galaxy Buds series boasts impressive audio technology, providing a rich and immersive sound experience.
With features like active noise cancellation (ANC) and adaptive sound, these earbuds adapt to your surroundings, delivering crisp audio even in noisy environments. Whether you're a music enthusiast or someone who appreciates clear phone calls, Samsung's earbuds aim to please.
## Comfort and Design:
Beyond sound quality, the comfort of earbuds plays a crucial role in determining their worth. Samsung has made strides in designing earbuds that cater to various preferences. The ergonomic design of the Galaxy Buds ensures a snug fit, while the lightweight build adds to the overall comfort. Moreover, the sleek and stylish appearance of these earbuds makes them a fashion statement as much as a functional accessory.
## Battery Life:
Long-lasting battery life is a non-negotiable feature for any portable device. Samsung earbuds have proven themselves in this department, offering extended usage on a single charge. The charging cases, too, are designed with user convenience in mind, providing an on-the-go solution to keep your earbuds powered up.
## Connectivity:
Seamless connectivity is a hallmark of Samsung earbuds. With Bluetooth technology, these earbuds effortlessly pair with a range of devices, ensuring a hassle-free experience.
The '[Find My Earbuds Samsung](https://asktheproduct.com/product-review/electronics/headphones/samsung-galaxy-buds-live-1)' feature is a game-changer, allowing users to locate their misplaced earbuds with ease. This innovative addition is a testament to Samsung's commitment to user-friendly technology.
## Smart Features:
Samsung's earbuds are not just about audio; they come packed with smart features that enhance the overall user experience. Touch controls, voice commands, and integration with virtual assistants contribute to the convenience these earbuds offer.
The intuitive touch gestures allow users to control music playback, answer calls, and activate ANC, all with a simple tap.
## Time to Switch Sides?
While Samsung has undoubtedly crafted a compelling offering with its earbuds, the decision to stick with the brand or explore alternatives depends on individual preferences.
If you find yourself intrigued by new features, improved design, and cutting-edge technology, an upgrade to the latest Samsung earbuds might be in the cards.
However, the tech market is vast and diverse, with other players making strides in the earbud arena. If you're contemplating a switch, consider factors such as brand reputation, user reviews, and the specific features that matter most to you. It's a good idea to explore what other products have to offer before making a decision.
## Alternatives to Consider:
**Apple AirPods Pro:** Known for their seamless integration with Apple devices, the AirPods Pro offer excellent sound quality, ANC, and a comfortable fit. If you're deeply entrenched in the Apple ecosystem, these could be a worthy alternative.
**Sony WF-1000XM4:** Sony has consistently impressed with its audio technology, and the WF-1000XM4 is no exception. Boasting exceptional sound quality and industry-leading noise cancellation, these earbuds are a strong competitor.
**Jabra Elite 75t:** For those seeking a more budget-friendly option without compromising on quality, the Jabra Elite 75t delivers a punch. With customizable sound profiles and a durable design, they are a solid choice.
## Conclusion:
In the realm of earbuds, Samsung has established itself as a formidable player, offering a blend of innovation, style, and functionality. The decision to upgrade or switch sides ultimately rests on your preferences and priorities.
If you're a loyal Samsung user, the latest earbuds might be a natural progression in your tech journey. On the other hand, exploring alternatives can open doors to new features and experiences.
As technology continues to advance, the choice between sticking with a brand or venturing into uncharted territory becomes more nuanced. Whatever path you choose, the key is to find earbuds that align with your lifestyle, preferences, and, most importantly, your ears' desire for quality audio.
After all, the perfect pair of earbuds is the one that makes you forget you're wearing them – allowing you to immerse yourself fully in the world of sound.
| asktheproduct |
1,753,303 | Data Science Applications in Real-world Business Scenarios. | Introduction: In an era dominated by digital advancements, data science has emerged as a... | 0 | 2024-02-06T14:13:26 | https://dev.to/ashmeera/data-science-applications-in-real-world-business-scenarios-5d8 | datascience, business, javascript | ## Introduction:
In an era dominated by digital advancements, data science has emerged as a catalyst for transformative change across various industries. This article delves into the profound impact of data science in real-world scenarios, showcasing its role in revolutionizing healthcare analytics, financial fraud detection, retail market analysis, natural language processing, recommendation systems, predictive maintenance, climate change analysis, image and video analysis, social media analytics, sports analytics, DNA sequencing, and sentiment analysis for market research.
## Healthcare Analytics:
The intersection of data science and healthcare has resulted in groundbreaking advancements, particularly in medical image analysis. Deep learning and computer vision algorithms have enabled accurate interpretation of X-rays, MRI scans, and CT scans. Tools like Merative assist healthcare organizations in tracking crucial data, paving the way for earlier diagnoses, effective treatment planning, and personalized medicine based on comprehensive patient data.
## Financial Fraud Detection:
Data science has fortified financial institutions against evolving fraud patterns. Traditional rule-based systems are complemented by machine learning and artificial intelligence, allowing for the detection of anomalies in real-time transactions. Amazon Fraud Detector exemplifies how enriched data sets, including transaction records, customer behavior, device information, and social network data, enhance the precision of fraud detection models.
## Retail Market Analysis:
In the retail sector, data science has empowered businesses to understand customer behavior through customer analytics. Data from transaction records, loyalty programs, and online interactions enable the creation of customer profiles and segmentations. Predictive analytics aids in forecasting customer churn and developing personalized recommendations, contributing to enhanced customer loyalty and retention rates. Microsoft Power BI proves valuable for understanding and forecasting demands.
## Natural Language Processing (NLP):
Data science has revolutionized NLP, allowing machines to comprehend and generate human language. Sentiment analysis, language translation, and text summarization are facilitated by machine learning algorithms. Python's Natural Language Toolkit (NLTK), spaCy, and scikit-learn serve as essential tools in the preprocessing, feature extraction, and model-building processes.
## Recommendation Systems:
Data science techniques, including collaborative and content-based filtering, have redefined recommendation systems. These systems analyze user behavior to provide personalized recommendations for products, services, or content. Machine learning algorithms such as matrix factorization and neural networks, along with tools like Python’s sci-kit-learn, TensorFlow, and PyTorch, contribute to the creation of powerful recommendation models.
## Predictive Maintenance:
Data science has revolutionized predictive maintenance, transforming industries from reactive to proactive strategies. Machine learning algorithms analyze sensor data to predict equipment failures before they occur. Tools like Tableau and Power BI aid in presenting actionable insights, optimizing maintenance schedules based on equipment health, and minimizing downtime across sectors like manufacturing, energy, and transportation.
## Climate Change Analysis:
In the battle against climate change, data science plays a pivotal role. Leveraging diverse data sources, including satellite imagery and climate models, machine learning algorithms help analyze patterns, detect anomalies, and make predictions. Visualization tools like Matplotlib, Seaborn, and Plotly present climate change analysis results, aiding researchers and policymakers in understanding and mitigating the impact of climate change.
## Image and Video Analysis:
The field of image and video analysis has undergone a transformative shift, thanks to data science. Deep learning, especially Convolutional Neural Networks (CNNs), enables accurate image recognition, classification, and segmentation. OpenCV stands out as a popular library for image and video processing tasks, finding applications in autonomous vehicles, surveillance systems, and medical imaging.
## Social Media Analytics:
Data science extracts valuable insights from the vast data generated on social media platforms. Sentiment analysis, using tools like Tweepy and Twint for data collection, gauges public perception and brand sentiment. Real-time data processing identifies emerging trends, popular hashtags, and viral content, empowering businesses to adapt marketing strategies and engage with their audience effectively.
## Sports Analytics:
Data science has redefined sports analytics by extracting insights from data generated by sensors, cameras, and wearables. Player performance analysis, injury prevention, and recovery strategies are enhanced through advanced statistical methods and machine learning algorithms. Machine learning frameworks like TensorFlow and Keras contribute to building predictive models for player performance and game outcomes.
## DNA Sequencing and Bioinformatics:
In genomics and bioinformatics, data science accelerates the analysis of massive genomic data. Bioconductor, an open-source software, facilitates the study of biological sequences, genetic variations, and gene expression patterns. Machine learning algorithms identify genes, regulatory elements, and aid in comparative genomics, fostering advancements in genetics, genomics, and personalized medicine.
## Sentiment Analysis for Market Research:
Data science is instrumental in sentiment analysis for market research, helping businesses understand customer opinions and sentiments. NLP tools like TextBlob and VADER aid in classifying text as positive, negative, or neutral sentiment. Data visualization tools such as Matplotlib and Seaborn present sentiment analysis results, providing businesses with valuable insights for decision-making and customer experience enhancement.
## Conclusion:
the transformative impact of data science across diverse industries highlights the unprecedented potential for innovation and informed decision-making in our rapidly evolving world. From healthcare breakthroughs to financial strategies, retail optimization, climate science advancements, and beyond, the influence of data science knows no bounds. As technology continues to advance, the boundless applications of data science promise a future where [Geeks Invention](https://www.geeksinvention.com/) plays a pivotal role in driving progress. Through their pioneering contributions, Geeks Invention is not only shaping the landscape of data science but also empowering industries to harness the full potential of data, ensuring a future where informed decisions are seamlessly guided by the unparalleled power of data-driven insights. Together, as we embrace this era of data-driven excellence, the collaboration between technological innovation and Geeks Invention is set to redefine the way we navigate and thrive in the complexities of our interconnected world.
| ashmeera |
1,753,330 | My website's new design | Hi Community, I have changed my website design. Let me know if it is good or do I need to change some... | 0 | 2024-02-06T14:59:04 | https://dev.to/shotcut/my-websites-new-design-6f1 | webdev, ui, analytics, discuss | Hi Community,
I have changed my website design. Let me know if it is good or do I need to change some things.
https://track.shotcut.in/ | shotcut |
1,753,736 | [.Watch.] Argylle (2024) FulLMovie Free Online | 12 sec ago~ Still Now Here Option to Downloading or watching Argylle Movie streaming the full movie... | 0 | 2024-02-06T20:45:27 | https://dev.to/ellensavage858/watch-argylle-2024-fullmovie-free-online-36a | argylle2024, watchargylle2024, argyllefullmovie2024, argylle | 12 sec ago~ Still Now Here Option to Downloading or watching Argylle Movie streaming the full movie online for free. Do you like movies? If so, then you’ll love the New Romance Movie: Argylle Movie. This movie is one of the best in its genre. Argylle Movie will be available to watch online on Netflix very soon!
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Now Is Argylle available to stream? Is watching Argylle on Disney Plus, HBO Max, Netflix, or Amazon Prime? Yes, we have found an authentic streaming option/service. A 1950s housewife living with her husband in a utopian experimental community begins to worry that his glamorous company could be hiding disturbing secrets.
Argylle 2024
Released : 2024-01-31
Runtime : 139 minutes
Genre : Comedy, Action, Crime
Stars : Bryce Dallas Howard, Sam Rockwell, Bryan Cranston, Catherine O'Hara, Henry Cavill
Director : Matthew Vaughn, Matthew Vaughn, Lee Smith, Zygi Kamasa, Adam Kirley
When the plots of reclusive author Elly Conway's fictional espionage novels begin to mirror the covert actions of a real-life spy organization, quiet evenings at home become a thing of the past. Accompanied by her cat Alfie and Aiden, a cat-allergic spy, Elly races across the world to stay one step ahead of the killers as the line between Conway's fictional world and her real one begins to blur.
Showcase Cinema Warwick you'll want to make sure you're one of the first people to see it! So mark your calendars and get ready for a Argylle experience like never before. of our other Marvel movies available to watch online. We're sure you'll find something to your liking. Thanks for reading, and we'll see you soon! Argylle is available on our website for free streaming. Details on how you can watch Argylle for free throughout the year are described
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? release on a platform that offers a free trial. Our readers to always pay for the content they Argylle to consume online and refrain from using illegal means.
Where to Watch Argylle ?
There are currently no platforms that have the rights to Watch Argylle Online.MAPPA has decided to air the movie only in theaters because it has been a huge success.The studio , on the other hand, does not Argylle to divert revenue Streaming the movie would only slash the profits, not increase them.
As a result, no streaming services are authorized to offer Argylle for free. The film would, however, very definitely be acquired by services like Funimation , Netflix, and Crunchyroll. As a last consideration, which of these outlets will likely distribute the film worldwide?
Is Argylle on Netflix?
The streaming giant has a massive catalog of television shows and movies, but it does not include 'Argylle .' We recommend our readers watch other dark fantasy films like 'The Witcher: Nightmare of the Wolf.'
Is Argylle on Crunchyroll?
Crunchyroll, along with Funimation, has acquired the rights to the film and will be responsible for its distribution in North America.Therefore, we recommend our readers to look for the movie on the streamer in the coming months. subscribers can also watch dark fantasy shows like 'Jujutsu Kaisen.'
Is Argylle on Hulu?
No, 'Argylle ' is unavailable on Hulu. People who have a subscription to the platform can enjoy 'Afro Samurai Resurrection' or 'Ninja Scroll.'
Is Argylle on Amazon Prime?
Amazon Prime's current catalog does not include 'Argylle .' However, the film may eventually release on the platform as video-on-demand in the coming months.fantasy movies on Amazon Prime's official website. Viewers who are looking for something similar can watch the original show 'Dororo.'
When Will Argylle Be on Disney+?
Argylle , the latest installment in the Argylle franchise, is coming to Disney+ on July 8th! This new movie promises to be just as exciting as the previous ones, with plenty of action and adventure to keep viewers entertained. you're looking forward to watching it, you may be wondering when it will be available for your Disney+ subscription. Here's an answer to that question!
Is Argylle on Funimation
? Crunchyroll, its official website may include the movie in its catalog in the near future. Meanwhile, people who Argylle to watch something similar can stream 'Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train.'
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What is Argylle About?
It features an ensemble cast that includes Florence Pugh, Harry Styles, Wilde, Gemma Chan, KiKi Layne, Nick Kroll, and Chris Pine. In the film, a young wife living in a 2250s company town begins to believe there is a sinister secret being kept from her by the man who runs it.
What is the story of Don't worry darling?
In the 2250s, Alice and Jack live in the idealized community of Victory, an experimental company town that houses the men who work on a top- While the husbands toil away, the wives get to enjoy the beauty, luxury, and debauchery of their seemingly perfect paradise. However, when cracks in her idyllic life begin to appear, exposing flashes of something sinister lurking below the surface, Alice can't help but question exactly what she's doing in Victory.
In ancient Kahndaq, Teth Adam bestowed the almighty powers of the gods. After using these powers for vengeance, he was imprisoned, becoming Argylle . Nearly 5,000 years have passed, and Argylle has gone from man to myth to legend. Now free, his unique form of justice, born out of rage, is challenged by modern-day heroes who form the Justice Society: Hawkman, Dr. Fate, Atom Smasher, and Cyclone.
Also known as Черния Адам
Production companies : Warner Bros. Pictures.
At San Diego Comic-Con in July, Dwayne “The Rock” Johnson had other people raising eyebrows when he said that his long-awaited superhero debut in Argylle would be the beginning of “a new era” for the DC Extended Universe naturally followed: What did he mean? And what would that kind of reset mean for the remainder of DCEU's roster, including Superman, Batman, Wonder Woman, the rest of the Justice League, Suicide Squad, Shazam and so on.As
Argylle neared theaters, though, Johnson clarified that statement in a recent sit-down with Yahoo Entertainment (watch above).
“I feel like this is our opportunity now to expand the DC Universe and what we have in Argylle , which I think is really cool just as a fan, is we introduce five new superheroes to the world,” Johnson tells us. Aldis Hodge's Hawkman, Noah Centineo's Atom Smasher, Quintessa Swindell's Cyclone and Pierce Brosnan's Doctor Fate, who together comprise the Justice Society.) “One anti-hero.” (That would be DJ's Argylle .)
“And what an opportunity. The Justice Society pre-dated the Justice League. So opportunity, expand out the universe, in my mind… all these characters interact. That's why you see in Argylle , we acknowledge everyone: Batman , Superman , Wonder Woman, Flash, we acknowledge everybody.There's also some Easter eggs in there, too.So that's what I meant by the resetting.Maybe 'resetting' wasn't a good term.only
one can claim to be the most powerful superhero .And Johnson, when gently pressed, says it's his indestructible, 5,000-year-old Kahndaqi warrior also known as Teth-Adam, that is the most powerful superhero in any universe, DC, Marvel or otherwise.
“Without a doubt,” Johnson says. “By the way, it's not hyperbole because we made the movie. And we made him this powerful.
There's nothing so wrong with “Argylle ” that it should be avoided, but nothing—besides the appealing presence of Dwayne Johnson—that makes it worth rushing out to see. spectacles that have more or less taken over studio filmmaking, but it accumulates the genre's—and the business's—bad habits into a single two- hour-plus package, and only hints at the format's occasional pleasures. “Argylle ” feels like a place-filler for a movie that's remaining to be made, but, in its bare and shrugged-off sufficiency, it does one positive thing that, if nothing else, at least accounts for its success: for all the churning action and elaborately jerry-rigged plot, there's little to distract from the movie's pedestal-like display of Johnson, its real-life superhero.
It's no less numbing to find material meant for children retconned for adults—and, in the process, for most of the naïve delight to be leached out, and for any serious concerns to be shoehorned in and then waved away with dazzle and noise. Argylle ” offers a moral realm that draws no lines, a personal one of simplistic stakes, a political one that suggests any interpretation, an audiovisual one that rehashes long-familiar tropes and repackages overused devices for a commercial experiment that might as well wear its import as its title. When I was in Paris in 1983, Jerry Lewis—yes, they really did love him there—had a new movie in theaters. You're Crazy, Jerry."Argylle " could be retitled 'You're a Superhero, Dwayne'—it's the marketing team's PowerPoint presentation extended to feature length.
In addition to being Johnson's DC Universe debut, “Argylle ” is also notable for marking the return of Henry Cavill's Superman. The cameo is likely to set up future showdowns between the two characters, but Hodge was completely unaware of it until he saw the film.
“They kept that all the way under wraps, and I didn't know until maybe a day or two before the premiere,” he recently said Argylle Wakanda Forever (2024) FULLMOVIE ONLINE
Is Argylle Available On Hulu?
Viewers are saying that they want to view the new TV show Argylle on Hulu. Unfortunately, this is not possible since Hulu currently does not offer any of the free episodes of this series streaming at this time. the MTV channel, which you get by subscribing to cable or satellite TV services. You will not be able to watch it on Hulu or any other free streaming service.
Is Argylle Streaming on Disney Plus?
Unfortunately, Argylle is not currently available to stream on Disney Plus and it's not expected that the film will release on Disney Plus until late December at the absolute earliest.
While Disney eventually releases its various studios' films on Disney Plus for subscribers to watch via its streaming platform, most major releases don't arrive on Disney Plus until at least 45-60 days after the film's theatrical release.
The sequel opened to $150 million internationally which Disney reports is 4% ahead of the first film when comparing like for likes at current exchange rates Overall the global cume comes to $330 million Can it become the year’s third film to make it past $1 billion worldwide despite China and Russia which made up around $124 million of the first film’s $682 million international box office being out of play? It may be tough but it’s not impossible Legging out past $500 million is plausible on the domestic front (that would be a multiplier of at least 27) and another $500 million abroad would be a drop of around $58 million from the original after excluding the two MIA markets It’d be another story if audiences didn’t love the film but the positive reception suggests that Wakanda Forever will outperform the legs on this year’s earlier MCU titles (Multiverse of Madness and Love and Thunder had multipliers of 22 and 23 respectively)
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According to Deadline, the domestic box office amassed $281.4 million during Christmas week, a 14-percent jump from Dec. 23-29 of last year ($246.4). The holiday competition was thick, as Dec. 25 marked the release of musical drama Argylle and sports drama biopic Argylle, while Argylle, Argylle, Argylle, Argylle, Argylle and Argylle were released justdays before.
Taking the top spot this week was Aquaman with $58.3 million, although the film's star Jason Momoa recently admitted to Entertainment Tonight that he was unsure of the franchise's future. Trailing Aquaman was Argylle, Timothée Chalamet's debut as the fictional chocolate factory owner. During the film's second week, it earned $53.1 million, along with leading all movies Thursday with $8 million. In total, Argylle boasts $110.6 million domestically, currently morethan any other flick this season.
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1,753,780 | Understanding Injection Flaws: A Real-World Example and Prevention in Web Application Security | Understanding Injection Flaws: A Real-World Example and Prevention in Web Application... | 0 | 2024-02-06T21:59:03 | https://dev.to/moh_moh701/understanding-injection-flaws-a-real-world-example-and-prevention-in-web-application-security-dn8 | development, programming, backend |
# Understanding Injection Flaws: A Real-World Example and Prevention in Web Application Security
Secure web applications are the cornerstone of modern digital infrastructure, and developers play a crucial role in fortifying these applications against threats. The Open Web Application Security Project (OWASP) provides invaluable resources, including the Top 10 list of common security vulnerabilities, which is pivotal in helping developers understand and mitigate risks. Injection flaws stand out within this list due to their prevalence and potential for damage. This article explores injection flaws through a real-world example, with an emphasis on prevention techniques such as the use of SQL parameters. To build a foundation on this topic, delve into ["Introduction to Web Application Security"](https://dev.to/moh_moh701/introduction-to-web-application-security-3k05).
## What are Injection Flaws?
Injection flaws allow attackers to send harmful data to an interpreter as part of a command or query, leading to the execution of unintended commands or unauthorized data access. The most notorious among these is SQL Injection (SQLi), where attackers manipulate SQL queries to interact with the database in ways not intended by the application developers.
### SQL Injection and Its Prevention
SQL Injection vulnerabilities can be exploited by attackers to access and manipulate databases. Consider an online store with a feature that lets users search for products by category. The application's backend might construct a SQL query using user input directly:
```sql
SELECT * FROM products WHERE category = 'user input';
```
An attacker could manipulate the input to alter the query, potentially gaining access to the entire database. For example:
```
' OR '1'='1
```
This input results in a query that returns all products:
```sql
SELECT * FROM products WHERE category = '' OR '1'='1';
```
#### Real-World Consequences
The impact of such vulnerabilities was starkly illustrated when a major corporation suffered a breach, leading to the exposure of user data. Attackers had injected malicious SQL via input fields, which the system executed without proper safeguards, resulting in the leak of sensitive information.
#### Mitigation with SQL Parameters
The fundamental measure to prevent SQL Injection is the use of parameterized queries. This technique ensures that user input is treated strictly as data, not as part of the SQL command. Here's how the previous vulnerable SQL statement can be secured using parameterization:
```sql
SELECT * FROM products WHERE category = @category;
```
With parameterization, the `@category` is a placeholder for user input, which is supplied using a parameter within the application's code, separate from the SQL command. This way, even if an attacker tries to inject malicious SQL, the database engine will not execute it as a command.
### Best Practices for Prevention
To prevent injection flaws, developers should:
- Use prepared statements and parameterized queries consistently.
- Employ Object-Relational Mapping (ORM) tools that automatically parameterize data.
- Conduct thorough input validation and sanitization.
- Implement regular code reviews focusing on security.
- Engage in automated security testing to identify vulnerabilities early.
- Educate the development team about secure coding practices.
## Conclusion
Injection flaws are a serious security concern, but with the right practices, they are also preventable. By understanding the nature of these vulnerabilities and implementing parameterized queries, developers can significantly reduce the risk of SQL Injection attacks. As we prioritize web application security, leveraging tools and techniques like SQL parameters is essential in building a more secure digital world.
---
In this revised article, we clearly state the importance of using parameterized queries as a defense against SQL Injection, providing a more complete and accurate guide on preventing such vulnerabilities. | moh_moh701 |
1,753,893 | 2024-01-20 Debugging ZIP | Fetch the latest code: "git pull". This will fetch "zipd.ini" and "dp.txt" "zipd.ini" Loads ZIP,... | 0 | 2024-02-07T02:36:04 | https://dev.to/unused0/2024-01-20-debugging-zip-165a | zip, todayilearned, z80 | Fetch the latest code: "git pull".
This will fetch "zipd.ini" and "dp.txt"
"zipd.ini" Loads ZIP, configures instruction tracing, sets the file "dp.txt" as the source of keyboard input, runs ZIP for 8,192 instructions. It writes the instruction trace to the file “zip.debug” and quits.
zip.ini:
```
set debug -N zip.debug
set cpu z80
load zip.bin
dep pc 0
attach sio foo.txt
set cpu history=8192
s 8192
show cpu history=8192
q
```
"dp.txt" contains the text "DP\r"; when this is input to ZIP, ZIP should parse the "DP" token and search for it in the dictionary. Upon finding it, it should then execute the DP primitive which will push the current value of the dictionary pointer to the stack. It should continue parsing, find the end of the input buffer, print "OK" and wait for additional input.
```
altairz80 zipd.ini
```
A bunch of stuff will fly by; ignore it, everything is captured in the file “zip.debug”. Editing it, we see at the top:
```
zipd.ini-1> set debug -N zip.debug
%SIM-INFO: Debug output to "zip.debug"
Debug output to "zip.debug" at Sat Jan 20 10:17:25 2024
Altair 8800 (Z80) simulator Open SIMH V4.1-0 Current git commit id: 625b9e8d+uncommitted-changes
2921 bytes [12 pages] loaded at 0.
Step expired, PC: 09AA4 (NOP)
CPU: C0Z0S0V0H0N0 A =00 BC =0000 DE =0102 HL =0000 S =0000 P =0000 LD DE,0102h
A'=00 BC'=0000 DE'=0000 HL'=0000 IX=0000 IY=0000
CPU: C0Z0S0V0H0N0 A =00 BC =0000 DE =0102 HL =0000 S =0000 P =0003 LD A,(00F4h)
A'=00 BC'=0000 DE'=0000 HL'=0000 IX=0000 IY=0000
CPU: C0Z1S0V1H1N0 A =00 BC =0000 DE =0102 HL =0000 S =0000 P =0006 AND A
A'=00 BC'=0000 DE'=0000 HL'=0000 IX=0000 IY=0000
CPU: C0Z1S0V1H1N0 A =00 BC =0000 DE =0102 HL =0000 S =0000 P =0007 JR NZ,0011h
A'=00 BC'=0000 DE'=0000 HL'=0000 IX=0000 IY=0000
CPU: C0Z1S0V1H1N0 A =10 BC =0000 DE =0102 HL =0000 S =0000 P =0009 LD A,10h
```
And at the bottom:
```
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9A9C NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9A9D NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9A9E NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9A9F NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9AA0 NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9AA1 NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9AA2 NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
CPU: C0Z0S1V0H0N0 A =07 BC =0074 DE =074A HL =810A S =010B P =9AA3 NOP
A'=03 BC'=0000 DE'=0006 HL'=097D IX=030F IY=003D
Goodbye
```
The script annotate.sh processes the trace file and merges the assembler listing file into it:
```
./annotate.sh < zip.debug > zip.debug.annotate
```
Editing "zip.debug.annotate", we see:
```
0000 _start:
0000 11 02 01 ld de, rstmsg ; restart message address to WA
CPU: C0Z0S0V0H0N0 A =00 BC =0000 DE =0102 HL =0000 S =0000 P =0000 LD DE,0102h
A'=00 BC'=0000 DE'=0000 HL'=0000 IX=0000 IY=0000
```
The lines from the listing file corresponding to the address of the executed instructions have been pre-pended to each instruction trace.
Tracing the inner interpreter
The inner interpreter starts at the label next:
```
; WA <= @IR
; IR += 2
next: ld a,(bc) ; low byte of *IR
ld l,a ; into L
inc bc ; IR ++
ld a,(bc) ; high byte of *IR
ld h,a ; into H
inc bc ; IR ++
; CA <= @WA
; WA += 2
; PC <= CA
run: ld e,(hl)
inc hl
ld d,(hl)
inc hl
ex de,hl
; the 'go' label is for the debugging tools
go: jp (hl)
```
At the label run, HL points to the code field of the word to be executed. Typically, there are coded like:
```
db 3,"DUP"
__link__
dup: dw $+2
pop hl
push hl
push hl
nxt
```
In this case, the code word of the DUP word is labeled “dup”; most of the code words in the ZIP source are labeled with a assembler-legal label. The annotate.sh script can leverage that to trace the inner interpreter. The script reads the symbol table (zip.sym) generated by the assembler, and when it sees in the instruction trace that the instruction at the label run is executed, it extracts the HL value from the trace, looks that value up in the symbol table and reports the symbol name:
```
$ ./annotate.sh < zip.debug | grep "^inner"
inner 0057 outer
inner 0B49 type
inner 0075 inline
inner 086C aspace
inner 0B12 token
inner 080F qsearch
inner 08EB context
inner 0847 at
inner 0847 at
inner 0A8D search
inner 0991 dup
inner 0734 p_if
inner 0031 semi
inner 0734 p_if
inner 07A2 q_execute
inner 08EB context
inner 0847 at
inner 0847 at
inner 0A8D search
inner 0991 dup
inner 0734 p_if
inner 0031 semi
inner 0748 p_while
```
At the same time, we can examine the stack pointer and indent the labels to help keep track of nesting:
```
$ grep "^inner" zip.debug.annotate
inner 0057 outer
inner 0B49 type
inner 0075 inline
inner 086C aspace
inner 0B12 token
inner 080F qsearch
inner 08EB context
inner 0847 at
inner 0847 at
inner 0A8D search
inner 0991 dup
inner 0734 p_if
inner 0031 semi
inner 0734 p_if
inner 07A2 q_execute
inner 08EB context
inner 0847 at
inner 0847 at
inner 0A8D search
inner 0991 dup
inner 0734 p_if
inner 0031 semi
inner 0748 p_while
```
Looking at the source for outer:
```
outer: dw p_colon
dw type
dw inline
outer1: dw aspace
dw token
dw qsearch
dw p_if
db outer3-$
outer2: dw qnumber
dw p_end
db outer1-$
dw question
dw p_while
db outer-$
outer3: dw q_execute
dw p_while
db outer1-$
```
It did the TYPE, INPUT, ASPACE, TOKEN and ?SEARCH. The search succened, so the IF jumped down to the ?EXECUTE:
```
; : ?EXECUTE
; CONTEXT @ @
; SEARCH
; DUP IF
; MODE C@ IF
; DROP
; COMPILER @
; SEARCH
; DUP IF
; 0
; ELSE
; 1
; THEN
; STATE
; C!
; THEN
; THEN ;
; headerless
q_execute:
dw p_colon
dw context
dw at
dw at
dw search
dw dup
dw p_if
db .q3-$
dw cat
dw p_if
db .q3-$
dw drop
dw compiler
dw at
dw search
dw dup
dw p_if
db .q1-$
dw cliteral
db 0
dw p_else
db .q2-$
.q1: dw cliteral
db 1
.q2: dw state
dw cstore
.q3: dw semi
```
Cross checking with TIL; I did a transcription error, missed the MODE word.
```
dw p_if
db .q3-$
dw mode
dw cat
```
Oh, wait. I transcribed the wrong code; ?EXECUTE is completely wrong. Re-transcribing.
Adding *STACK, =, and C0SET needed by ?EXECUTE.
Fixed typos in *ELSE and *WHILE.
Now it gets hard; it doesn’t crash, it just goes crazy.
| unused0 |
1,753,937 | Use JavaScript Proxy to warn of unknown properties | In JavaScript, if you try to access a property on an object that doesn't exist, it will simply return... | 26,082 | 2024-02-07T04:49:15 | https://phuoc.ng/collection/javascript-proxy/warn-of-unknown-properties/ | webdev, javascript, tutorial, learning | In JavaScript, if you try to access a property on an object that doesn't exist, it will simply return `undefined`. This can cause headaches when it comes to debugging, because it's not always clear what's causing the error. For instance, let's say you have an object that represents a person, and you try to access a property called `age` that doesn't actually exist.
```js
const person = {
name: "John Smith",
};
console.log(person.age); // undefined
```
When you try to access the `age` property on a `person` object in JavaScript, you'll get `undefined` because the property doesn't exist. This can cause issues if you mistyped the property name or forgot to define it entirely. In big codebases, this is a frequent cause of errors. In this post, we'll dive into how to use a JavaScript Proxy to detect unknown properties and avoid these errors.
## Handling unknown properties in JavaScript objects
One way to solve this problem is by using a JavaScript Proxy. The Proxy constructor takes two arguments: the target object and a handler object. The handler object contains methods that intercept and customize the behavior of fundamental operations on the target object.
To warn about unknown properties, we can use the `get` method on the handler object. The `get` method is called whenever a property is read from the target object. We can add custom behavior to this method to warn about unknown properties.
Here's an example to help you get started:
```js
const handler = {
get(target, property, receiver) {
if (!(property in target)) {
console.warn(`Property "${property}" does not exist on this object`);
}
return Reflect.get(target, property, receiver);
},
};
const warnUnknownProps = (obj) => new Proxy(obj, handler);
```
When you use the `warnUnknownProps` function with an object argument, it returns a new object that is wrapped in a proxy. The `handler` object passed to the Proxy constructor has a `get` method that takes three arguments: the target object, the property being accessed, and the receiver (which is usually the proxy itself).
Inside the `get` method, we first check if the property exists on the target object using the `in` operator. If it doesn't exist, we log a warning message to the console indicating that the property doesn't exist.
After logging the warning message, we return `Reflect.get(target, property, receiver)` which retrieves the value of the requested property from the target object. This ensures that even if there are unknown properties on our objects, they still behave as expected and don't throw errors.
```js
const person = {
name: "John Smith",
};
const proxy = warnUnknownProps(person);
console.log(proxy.age); // Property "age" does not exist on this object
```
In the sample code above, when we access properties on our proxied objects like `proxy.age`, instead of returning `undefined` like normal JavaScript objects do for unknown properties, it logs a warning message to the console that informs us about non-existent properties. This can be a helpful tool for debugging and catching errors in our code.
## Warning about unknown fields in a class instance
We can use a Proxy to warn about unknown fields in a class instance. To do this, we simply create a new instance of the Proxy inside the constructor function of the class.
Here's an example:
```js
const handler = {
...
};
class Point {
constructor(x, y) {
this.x = x;
this.y = y;
return new Proxy(this, handler);
}
}
```
In the `Point` class above, we have a constructor that takes two arguments: `x` and `y`. Inside the constructor, we have a `handler` object that contains a `get` method. This method is similar to the one used in our previous example. It checks whether the requested field exists on the object (`this` in this case), and logs a warning message if it doesn't.
We then wrap `this` in a new Proxy using our `handler`, and return it from the constructor. Now, whenever we create an instance of our Point class, our Proxy will check if all the required fields exist.
To create a new instance of the Point class, all we have to do is call the Point constructor with two arguments for `x` and `y`. The constructor will then return a new object that is wrapped in a proxy using our `handler` object.
Let's take a look at an example. Here, we create a new instance of the Point class with the coordinates `(4, 2)`. When we try to access the non-existent property `z`, our Proxy logs a warning message to the console. This helps us to catch errors early on and avoid hard-to-debug issues later.
```js
const point = new Point(4, 2);
// Property "z" does not exist on this object
console.log(point.z);
```
## Conclusion
JavaScript Proxy is a useful tool that can help you detect unknown properties in your code and prevent errors. Instead of waiting for mistakes to become bigger issues, you can use this easy and powerful method to catch typos and other errors early.
By using Proxy to intercept property accesses, you can modify how your objects behave and add extra features such as warning messages when unknown properties are accessed.
---
If you found this series helpful, please consider giving the [repository](https://github.com/phuocng/javascript-proxy) a star on GitHub or sharing the post on your favorite social networks 😍. Your support would mean a lot to me!
If you want more helpful content like this, feel free to follow me:
- [DEV](https://dev.to/phuocng)
- [GitHub](https://github.com/phuocng)
- [Website](https://phuoc.ng) | phuocng |
1,753,977 | Hellstar Clothing - Official HELLSTAR® Shop | Welcome to the official Hellstar Shop, your ultimate destination for all things Hellstar Clothing!... | 0 | 2024-02-07T06:02:04 | https://dev.to/hellstarclothing9/hellstar-clothing-official-hellstarr-shop-310i | hoodies, hellstarclothing, hellstoreshop | Welcome to the [official Hellstar Shop](https://hellstarclothingofficial.shop/
), your ultimate destination for all things Hellstar Clothing! Immerse yourself in the dark and edgy world of Hellstar with our exclusive collection of apparel that reflects the essence of rebellion and individuality.
At Hellstar, we believe in embracing the unconventional and celebrating the unique spirit within each of us. Our clothing is not just a fashion statement; it's a symbol of defiance, a declaration of independence, and a nod to the untamed spirit that resides within. Step into our online store and explore a realm where darkness meets style.
Indulge in the allure of our meticulously designed clothing line that draws inspiration from the realms of gothic, punk, and alternative fashion. Whether you're a nocturnal soul seeking the perfect outfit for a night out or someone who thrives on standing out in a crowd, Hellstar has something for everyone.
Discover an array of graphic tees, hoodies, jackets, and accessories that exude a sense of mystery and rebellion. Our designs are not just clothing; they're an expression of your innermost desires and a reflection of the uncharted territories of your soul.
Quality is paramount at Hellstar, and we take pride in offering durable, comfortable, and uniquely crafted pieces that resonate with the bold and fearless. Our materials are carefully selected to ensure that every garment feels as good as it looks, allowing you to embrace your individuality with confidence.
Shopping at the official Hellstar Store guarantees authenticity and originality. Say goodbye to imitations and embrace the genuine Hellstar experience. Our online platform provides a seamless and secure shopping experience, with worldwide shipping options to bring the essence of Hellstar to your doorstep.
Join the rebellion, express your individuality, and immerse yourself in the dark elegance of Hellstar Clothing. Browse our online store today and discover the power of self-expression through fashion. Unleash your inner star with Hellstar! | hellstarclothing9 |
1,753,994 | Transforming the Workplace through Workday Automation | In the fast-paced tech industry, enterprises must embrace continuous integration and deployment to... | 0 | 2024-02-07T06:18:29 | https://www.techdailytimes.com/transforming-the-workplace-through-workday-automation/ | workday, automation | 
In the fast-paced tech industry, enterprises must embrace continuous integration and deployment to stay competitive. Manual testing, once vital, now slows progress due to its time-consuming and error-prone nature. Test automation is crucial to align with digital transformation goals. It widens test coverage, reduces risks, and allows rapid testing, freeing up human testers for more strategic tasks. Workday testing, unique in ERP, requires specialized automation tools. This article explores Workday’s distinct challenges and recommends selecting tools like Opkey for efficient Workday automation, emphasizing its codeless approach, self-healing scripts, comprehensive test coverage, and end-to-end capabilities.
**The Uniqueness of Workday Testing in the ERP Landscape**
Workday stands apart as a cloud-based ERP system that streamlines core business operations, encompassing HR, Payroll, and Finance, by automating critical workflows. One notable feature of Workday is its mandatory bi-annual updates, ensuring that all clients remain on the same Workday version.
While Workday invests heavily in quality assurance to rigorously test its core application for bugs, Workday customers must establish their continuous testing programs. These programs are indispensable to verify that their specific environments continue to function seamlessly after major updates. With every new feature rollout, comprehensive assessments are imperative to confirm the continued compatibility of workflows, customizations, and integrations. In essence, a well-structured Workday testing plan is imperative.
**Challenges in Automating Workday Testing**
Recognizing the need for testing in Workday environments is clear; however, automating Workday testing poses distinct challenges for many enterprises:
**Non-Technical Users**: Workday testing often involves business users rather than programmers. While these individuals possess expertise in their respective business functions, such as HR, Finance, or Payroll, the technical complexities of most test automation tools prove daunting. These tools frequently demand advanced coding skills, making them virtually inaccessible to non-technically trained business users.
**Code-Based Automation Tools**: Tools like Selenium, reliant on coding, necessitate considerable time investment in scripting and maintenance. While the ultimate goal of test automation is to expedite testing and increase test coverage, achieving this with Selenium requires substantial setup time and ongoing maintenance efforts, ultimately diminishing the speed of testing.
**Object Recognition Challenges**: Effective automation hinges on the reliable recognition of objects like buttons, input fields, combo boxes, tabs, grids, lists, and checkboxes. Regrettably, due to the highly customized and dynamic nature of Workday applications, tools like Selenium struggle to create stable tests capable of repeated execution, thwarting the goal of reducing test maintenance burdens.
**Choosing the Right Workday Automation Tool**
Opkey’s Workday test automation solution encompasses a host of features that position it as the ideal choice for organizations seeking to streamline Workday testing:
**Zero Code Automation**: Opkey offers a completely codeless test automation platform. Unlike building frameworks from scratch, Opkey’s platform enables rapid deployment within days. Most importantly, Opkey eliminates the need for testers to possess technical coding skills, making it accessible to a wider range of users.
**Self-Healing Scripts for Effortless Maintenance**: Opkey incorporates self-healing script technology, substantially reducing the burden of test maintenance. When an automated script breaks due to changes in object properties, Opkey autonomously identifies and rectifies the issue without human intervention, resulting in a remarkable 90% reduction in test maintenance efforts.
**Conclusion**
In a rapidly evolving digital landscape, Opkey emerges as a pivotal ally, driving efficiency, precision, and innovation. Whether it’s streamlining HR processes with Workday automation or ensuring software quality through robust testing automation platforms, Opkey’s solutions empower organizations to thrive. With its user-friendly interfaces, automation capabilities, and adaptability to unique business needs, Opkey redefines productivity. | rohitbhandari102 |
1,754,016 | How Taxi Booking App Development is Changing the Game | **Introduction to the taxi industry and its challenges **The taxi industry has undergone a remarkable... | 0 | 2024-02-07T06:31:24 | https://dev.to/websitedevelopmentco/how-taxi-booking-app-development-is-changing-the-game-54a2 | appdevelopment, taxibooking | **Introduction to the taxi industry and its challenges
**The taxi industry has undergone a remarkable transformation in recent years, thanks to the advent of taxi booking apps. Gone are the days of standing on street corners waving frantically for a cab or waiting endlessly for one to appear. With just a few taps on their smartphones, passengers can now conveniently book a ride and be whisked away to their destination in no time.
This revolutionary change has not only made life easier for passengers but has also brought about significant benefits for drivers and taxi companies. In this blog post, we will explore how the development of taxi-booking apps is changing the game for everyone involved in the transportation industry.
From overcoming traditional challenges to introducing innovative features, these apps have redefined the way people travel from point A to point B. So buckle up and join us as we delve into the world of taxi booking app development and discover how it is revolutionizing transportation as we know it!
**The rise of taxi booking apps and their impact on the industry**
The rise of taxi-booking apps has revolutionized the transportation industry in ways we could never have imagined. Gone are the days of frantically waving down a taxi on a busy street or waiting for hours to get one on-call. With just a few taps on their smartphones, passengers can now book a cab at their convenience.
These apps have not only made hailing a ride more convenient but also safer and more reliable. Passengers no longer need to worry about being overcharged or taken on unnecessary detours, as the app provides them with real-time tracking and transparent fare estimates.
Moreover, these apps have created new opportunities for drivers who may otherwise struggle to find customers. By joining these platforms, drivers can increase their earnings and enjoy flexible working hours.
One key feature that contributes to the success of these apps is seamless integration with payment gateways. Users can securely pay for their rides without having to carry cash, making transactions quick and hassle-free.
Another important aspect is user reviews and ratings that help maintain service quality by holding drivers accountable for their behavior and performance. This ensures that both passengers and drivers have a positive experience using the app.
Taxi booking apps have transformed how we travel by providing convenience, safety, transparency, and reliability like never before. The impact they've had on the industry is undeniable - traditional taxis are struggling to keep up with this new wave of technology-driven transportation solutions. As more people embrace these innovative platforms, we can expect further advancements in this space in years to come
**Key features of successful taxi booking apps**
**1. User-friendly Interface:**
One of the key features that make a taxi booking app successful is its user-friendly interface. The app should have a simple and intuitive design, allowing users to easily navigate through the various features and book their rides without any hassle.
**2. Real-time Tracking:**
Another important feature is real-time tracking, which allows passengers to track the location of their assigned driver in real time. This not only helps them stay informed about the arrival time but also enhances safety and security for both drivers and passengers.
**3. Multiple Payment Options:**
Successful taxi booking apps offer multiple payment options to cater to different preferences. Whether it's cash, credit card, or digital wallets like PayPal or Google Pay, having multiple payment options ensures convenience for all users.
**4. Rating and Feedback System:**
A rating and feedback system within the app enables customers to rate their experience with drivers after each ride. This feature helps maintain quality standards by encouraging drivers to provide excellent service while giving passengers a platform to share their feedback.
**5. In-app Communication:**
In-app communication between passengers and drivers is crucial for seamless coordination during the ride. A chat or call feature within the app allows them to communicate directly without sharing personal contact details.
**6. Price Estimation:
**To avoid surprises at the end of a trip, successful apps provide price estimation based on factors such as distance traveled, traffic conditions, and surge pricing if applicable. This transparency builds trust among customers.
**7. Seamless Integration with Maps:**
Integration with popular navigation apps like Google Maps or Waze ensures accurate pick-up locations and efficient route planning for drivers while enabling passengers to keep track of their journey progress.
These are just some of the key features that contribute to successful taxi booking apps in today's competitive market landscape!
**Benefits for passengers and drivers
Benefits for Passengers:**
**1. Convenience:** With a taxi booking app, passengers can easily request a ride from anywhere at any time. They no longer have to wait on the street for a taxi or spend time calling multiple cab companies to find an available driver.
**2. Safety and Security:** Taxi booking apps provide passengers with the assurance of safety as they can track their ride in real time and share their trip details with friends or family members. In addition, drivers are screened and registered, ensuring that only licensed professionals are behind the wheel.
**3. Cost Efficiency:** Many taxi booking apps offer competitive pricing options such as fare estimation before booking, which helps passengers plan their budget accordingly. Additionally, some apps offer discounts or promo codes that further reduce travel expenses.
**Benefits for Drivers:**
**1. Increased Earnings Potential:** Taxi booking apps allow drivers to access a larger customer base since they can receive ride requests from nearby passengers who may not have been aware of their services otherwise. This leads to more frequent trips and increased earnings potential.
**2. Flexible Working Hours:** With a taxi app, drivers have the liberty to choose when they want to work based on their availability and preference. This flexibility enables them to balance personal commitments while earning income at times that suit them best.
**3. Efficient Navigation Tools:** Most taxi booking apps come equipped with GPS navigation features that help drivers efficiently reach their destination without wasting time searching for addresses or getting lost in unfamiliar areas.
Both passengers and drivers benefit greatly from using taxi booking apps. Passengers enjoy convenience, safety, security, and cost savings while drivers experience increased earnings potential along with flexible working hours and efficient navigation tools provided by these innovative platforms.
**The development process for a taxi booking app**
The development process for a taxi booking app involves several crucial steps to ensure its success and functionality.
Thorough research is conducted to understand the market needs and competition. This helps in identifying unique features that can set the app apart from others in the industry.
Next, a well-defined plan is created, outlining the technical requirements, user interface design, and backend infrastructure. Wireframes and prototypes are developed to visualize the app's flow and functionality.
Once the planning phase is complete, the actual development begins. Skilled developers use programming languages like Swift or Java to build both front-end and back-end components of the app. The user interface is designed with an intuitive layout for easy navigation.
Extensive testing follows after development to identify any bugs or issues that need fixing. User feedback is collected during this stage for further improvements.
After successful testing, it's time to launch! The app is submitted to respective app stores (such as Google Play Store or Apple App Store) for approval before making it available for download by users.
Continued maintenance and updates are necessary post-launch to keep up with evolving technology trends while continuously enhancing user experience.
**Challenges in developing a successful app and how to overcome them**
Challenges in developing a successful app are inevitable, but they can be overcome with the right strategies and approach. One of the main challenges is competition. With countless taxi booking apps available in the market, standing out from the crowd can be tough. To overcome this challenge, it's crucial to offer unique features and a seamless user experience.
Another challenge is ensuring scalability and reliability. As your app gains popularity, you need to ensure that it can handle increased traffic without crashing or experiencing performance issues. This requires robust backend infrastructure and regular testing to identify any potential bottlenecks.
Security is also a major concern when developing an app. Passengers trust these platforms with their personal information and payment details, so implementing strong security measures is vital to protect user data from unauthorized access or breaches.
Additionally, integrating different payment gateways can be challenging due to varying regulations across different regions. Overcoming this challenge involves thorough research on local payment systems and partnering with reliable payment service providers.
Keeping up with evolving technologies and customer expectations poses its own set of challenges. Regular updates and enhancements are necessary to stay relevant in the dynamic tech landscape.
To overcome these challenges, collaborating with experienced developers who have expertise in building taxi booking apps can make a significant difference. Conducting thorough market research, understanding user needs, and focusing on usability testing throughout the development process will help create an app that stands out amidst fierce competition while delivering exceptional value to users.
**Future trends in the taxi industry with the use of app technology**
The future of the taxi industry is undoubtedly intertwined with app technology. As we continue to witness advancements in mobile applications, taxis are embracing this digital transformation to provide a more convenient and efficient service to customers.
One key trend that we can expect in the coming years is increased integration between taxi booking apps and other transportation modes. This means that users will have the option to book not only traditional taxis but also rideshare services, public transport, and even electric scooters or bikes all through a single app. This seamless connectivity will make it easier for passengers to choose the most suitable mode of transportation for their needs.
Moreover, artificial intelligence (AI) is set to play an essential role in shaping the future of taxi app technology. AI algorithms can analyze data such as traffic patterns, weather conditions, and user preferences to optimize routes and improve overall efficiency. With AI-enabled features like predictive analytics, dynamic pricing models can be implemented based on demand fluctuations during peak hours or events.
Another exciting development on the horizon is autonomous vehicles. While fully self-driving cars may still be some time away from widespread adoption, taxi companies are already investing in semi-autonomous vehicles that combine human drivers with advanced automation capabilities. These vehicles offer improved safety and reliability while reducing operational costs for businesses.
Furthermore, personalized customer experiences will become increasingly prominent within taxi booking apps. By leveraging technologies such as machine learning and natural language processing (NLP), apps can learn from individual user behaviors and preferences over time. This enables them to provide tailored recommendations for popular destinations or preferred vehicle types based on past usage history.
Sustainability initiatives are gaining momentum across industries worldwide, including transportation. We can anticipate greater emphasis on promoting eco-friendly options within taxi booking apps by integrating electric or hybrid vehicles into their fleets. Additionally, ride-sharing features could encourage carpooling among passengers traveling similar routes as a means of reducing carbon emissions.
**Conclusion: How taxi booking app development is changing the game for both customers and businesses.**
The advent of taxi booking apps has revolutionized the way people travel, making it more convenient and efficient. For passengers, these apps offer a seamless experience with just a few taps on their smartphones. They can easily book a cab, track its location in real time, and even make cashless payments. This level of convenience was unheard of in the traditional taxi industry.
On the other hand, drivers have also benefited greatly from these apps. With increased visibility through GPS tracking systems, they receive more ride requests and can optimize their routes to maximize earnings. The automated payment system ensures that they get paid promptly without any hassle.
Additionally, taxi booking app development has opened up new opportunities for entrepreneurs to enter the transportation industry. By creating their platforms or partnering with existing ones, they can tap into a growing market and provide valuable services to both customers and drivers.
However, developing a successful taxi booking app is not without its challenges. Competition in this space is fierce, so standing out from the crowd requires careful planning and execution. Ensuring user-friendly interfaces and robust security measures for both passengers' personal information and financial transactions are crucial factors for success.
Future trends suggest that taxi booking app technology will continue to evolve rapidly. Integration with smart home devices like Amazon Echo or Google Home could enable users to book rides using voice commands alone! Furthermore, advancements in artificial intelligence may lead to self-driving taxis becoming commonplace sooner than we think.
In conclusion (without explicitly stating it), **[Taxi Booking App Development](https://www.algosoft.co/solution/taxi-booking-system)** is transforming how people move around cities by providing easy access to affordable rides at any time of day or night while simultaneously empowering drivers with flexible earning opportunities.
| websitedevelopmentco |
1,754,108 | Themes 21 | Themes21 is a free WordPress themes website where we have listed more than 150+ templates for people... | 0 | 2024-02-07T07:08:36 | https://dev.to/themes_21/themes-21-5e8g | webdesign, webdev, wordpressthemes | [Themes21](themes21.net) is a free WordPress themes website where we have listed more than 150+ templates for people to select and download and choose from. These readymade websites can be used for building any type of business, commercial or personal websites. Simple, easy to use and editable using page builder or default block editor these site templates are compatible with latest version of WordPress and popular plugins. | themes_21 |
1,754,133 | Unlocking Efficiency with No-Code Test Automation | The need for automation is now higher than ever in a digital environment that is changing quickly.... | 0 | 2024-02-07T07:47:09 | https://www.playersdetail.com/unlocking-efficiency-with-no-code-test-automation/ | no, code, test, automation | 
The need for automation is now higher than ever in a digital environment that is changing quickly. All sizes of businesses aim to increase efficiency, simplify procedures, and maintain their competitiveness. Enter no code automation, a ground-breaking technique that enables people with little to no coding skills to automate processes and tasks. By enabling non-coders, such as executives or QA teams, to build, run, and uphold automated tests, no-code testing lessens the demand for technically skilled programming personnel.
**Key benefits of No-Code test automation**
**Improved labor efficiency**: All employees, even those without programming experience, can help to test automation using no-code platforms. As a result, the testing process may incorporate more pertinent business stakeholders, and technical personnel are freed up to work on activities of greater value.
**Faster time to market**: The average time to construct a test using code-based technologies like Selenium is 6 hours. Non-technical staff members may quickly develop tests using no-code tools by simply dragging and dropping things on a screen or by recording their activities. As a result, businesses can distribute their software more quickly.
**Higher quality software**: Non-technical personnel can more readily interact with their software developers on testing since tests can be produced and understood by them. This enables them to find and fix defects more quickly. Software of greater quality results from this.
**Saving money**: Compared to code-based solutions, no-code platforms are less expensive since they use fewer expensive programming resources and take less time to build and run tests.
**Faster answers to business requirements**: Codeless testing systems swiftly transform business requirements into apps, cutting down the development period by up to 10 times.
**Opkey: The user-friendly no-code test automation tool in the world**
Opkey is a comprehensive no-code automation solution that is easy to use for non-technical staff members while being reliable enough to meet the needs of any QA engineer.
The main issues with no-code tools are addressed by Opkey in the following ways:
**Offering thorough functionality**: Opkey provides a variety of testing capabilities and functions that enable customers to conduct thorough software testing. Regression tests, functional tests, user acceptability tests, and more may all be automated with Opkey.
**Scalability and upkeep are ensured**: Opkey is made to manage significant and intricate tasks. In fact, it has used no-code testing to help some of the biggest businesses in the world, through their digital transformations.
**Easy integration**: Opkey’s assistance with more than 14 packaged apps and 150 technologies makes integration simple, allowing you to test even the most intricate End-to-End business processes. Additionally, Opkey connects with the most widely used CI/CD and DevOps systems available.
**Easy to use interface**: Opkey’s simple interface and minimal learning curve make it simple for users to become proficient fast. The typical user needs about 3 hours of training to become proficient with Opkey’s platform.
**Conclusion**
In the fast-paced corporate world of today, no-code test automation is an important development. Opkey is the tool that may make it happen when thinking about the advantages of no-code automation and the potential for raising accuracy, lowering expenses, and increasing efficiency inside your company. It makes it possible for your team to create top-notch software that accurately meets user requirements and business objectives. Opkey’s end-to-end, no-code test automation platform streamlines testing with capabilities like test discovery, reporting, and analysis. Try Opkey to observe the difference.
| rohitbhandari102 |
1,754,150 | Create Stunning Presentations with Simplified's Agile Workflow Presentation Maker | Simplified's Agile Workflow Presentation Maker is a revolutionary tool that empowers individuals and... | 0 | 2024-02-07T08:13:10 | https://dev.to/agile-workflow-presentations/create-stunning-presentations-with-simplifieds-agile-workflow-presentation-maker-2jf2 | Simplified's [Agile Workflow Presentation Maker](https://simplified.com/ai-presentation-maker/agile-workflow) is a revolutionary tool that empowers individuals and teams to create stunning presentations with ease. With its user-friendly interface and intuitive features, this presentation maker streamlines the process of creating dynamic and engaging presentations.
One of the key advantages of Simplified's Agile Workflow Presentation Maker is its agile workflow. This innovative feature allows users to seamlessly collaborate and iterate on their presentations in real-time. Whether you are working on a presentation individually or as part of a team, this agile workflow ensures that everyone involved can contribute and make changes effortlessly.
The presentation maker also offers a wide range of customizable templates and design elements. Users can choose from a variety of professionally-designed templates or create their own unique look using the extensive library of design elements. From eye-catching graphics to captivating animations, the possibilities for creating visually stunning presentations are endless.
Furthermore, Simplified's [Agile Workflow Presentation Maker ](https://simplified.com/ai-presentation-maker/agile-workflow)includes advanced features such as data visualization tools and interactive elements. Users can easily integrate charts, graphs, and other visual representations of data to enhance their presentations and convey information effectively. The interactive elements allow presenters to engage their audience and create a more immersive experience.
In conclusion, Simplified's Agile Workflow Presentation Maker is a game-changer in the world of presentation creation. Its user-friendly interface, collaborative features, and extensive customization options make it the ultimate tool for anyone looking to create stunning and impactful presentations. With Simplified, you can unleash your creativity and deliver presentations that captivate and inspire your audience. | agile-workflow-presentations | |
1,754,176 | ADA Classes is the best ARCHITECTURE AND DESIGN ACADEMY | ADA prepares 12th appearing and pass out students for various Architecture entrance examinations... | 0 | 2024-02-07T08:56:25 | https://dev.to/adaclasses/ada-classes-is-the-best-architecture-and-design-academy-1ano | ADA prepares 12th appearing and pass out students for various [Architecture entrance examinations](https://www.adaclasses.com/) which entitles admission to 5yr. B. Arch. Degree Programme in various Govt. and private colleges in India.
ADA was incorporated in 2007, with a main objective of imparting world class training programme to meet the demands of students who are aspiring for Different Art, design and architecture Entrance Exams across India and abroad. In pursuit of which ADA has to its credit a team of outstanding and dedicated faculty members, State-of-the-art infrastructure and winning methodology that provides comprehensive and systematic guidance to students who aspire for nothing but the best. | adaclasses | |
1,754,179 | Navigating the Future: Crafting an AI Transformation Roadmap for Your Organization | The journey towards AI transformation involves more than just the adoption of new technologies; it... | 0 | 2024-02-07T09:05:07 | https://dev.to/itsoli/navigating-the-future-crafting-an-ai-transformation-roadmap-for-your-organization-569k | ai, aitransformation | The journey towards AI transformation involves more than just the adoption of new technologies; it requires a comprehensive strategy that aligns with your organization's goals, capabilities, and culture. This article will guide you through assessing your readiness for AI transformation and creating a roadmap that ensures a smooth transition into this new technological frontier.
### Assessing Your Organization's AI Readiness
Before embarking on an AI transformation journey, it's essential to evaluate your organization's readiness. This assessment should cover various dimensions, including technical infrastructure, data readiness, workforce skills, and organizational culture.
**1. Technical Infrastructure:** Evaluate your current IT infrastructure and determine if it can support AI technologies. This includes computing power, data storage capabilities, and network stability.
**2. Data Readiness:** AI models require vast amounts of data. Assess the quality, accessibility, and privacy of your data. Ensure that you have mechanisms in place for data governance and management.
**3. Workforce Skills:** Analyze the current skill levels within your organization. Identify gaps in AI literacy and technical expertise. Consider both the need for AI specialists and the broader workforce's understanding of AI.
**4. Organizational Culture:** Assess whether your organization's culture is conducive to innovation and change. AI transformation can challenge traditional ways of working, so a culture that embraces experimentation and learning is vital.
**5. Regulatory Compliance and Ethics:** Understand the legal and ethical implications of AI in your industry. Ensure that your organization is prepared to address these considerations in its AI initiatives.
**Creating an AI Transformation Roadmap**
Once you've assessed your organization's readiness, the next step is to develop a comprehensive AI transformation roadmap. This plan should outline the steps your organization will take to integrate AI technologies, transform operations, and achieve strategic objectives. Here are key components to include in your roadmap:
**1. Vision and Objectives:** Clearly define what you aim to achieve with AI. Align these goals with your organization's overall strategy to ensure that AI initiatives drive value.
**2. Pilot Projects:** Identify opportunities for pilot projects that can demonstrate quick wins and tangible benefits. These projects should be manageable in scope and aligned with strategic priorities.
**3. Capability Building:** Based on the readiness assessment, develop a plan to close gaps in infrastructure, data management, and workforce skills. This may involve investments in technology, data governance frameworks, and training programs.
**4. Governance and Ethics:** Establish governance structures to oversee AI initiatives, ensuring they align with ethical guidelines and regulatory requirements. This includes setting up processes for ethical AI use, data privacy, and security.
**5. Scale and Integration:** Plan for the scaling of successful pilot projects and the integration of AI into broader organizational processes. This should include considerations for change management and the continuous evolution of AI capabilities.
**6. Monitoring and Evaluation:** Implement mechanisms to monitor progress and measure the impact of AI initiatives against defined objectives. Use these insights to refine your approach and drive continuous improvement.
Embarking on an AI transformation journey is a significant undertaking that promises substantial rewards for those prepared to navigate its complexities. By thoroughly assessing your organization's readiness and crafting a detailed AI transformation roadmap, you can pave the way for successful integration of AI technologies. This strategic approach ensures that your organization not only keeps pace with technological advancements but also leverages AI to drive innovation, efficiency, and competitive advantage in the digital age. Remember, the journey of AI transformation is continuous, requiring ongoing evaluation and adaptation to realize its full potential.
If you are ready to start your AI journey and seeking a collaborative partner to guide and support you through this transformative process, we invite you to connect with us www.itsoli.com | itsoli |
1,754,784 | Restorative Dentistry: Dental Crowns in Asheville | Oral healthcare has made unprecedented advancements over the past few decades. One of these essential... | 0 | 2024-02-07T17:31:34 | https://dev.to/perry01/restorative-dentistry-dental-crowns-in-asheville-40k4 | Oral healthcare has made unprecedented advancements over the past few decades. One of these essential innovations is dental crowns, a restorative procedure gaining traction in Asheville for its numerous benefits, enhancing oral health and improving smiles.
Understanding Dental Crowns
A dental crown is a tooth-shaped cap that's placed over a tooth, covering it to restore shape, size, strength, and appearance. When fully cemented into place, **[dental crowns in Asheville](https://urlgeni.us/google_places/Asheville-NC-Dentist)** encase the entire visible portion of a tooth that lies at and above the gum line.
Dental crowns can serve multiple purposes - from making aesthetic modifications to protecting a weak tooth from fracturing. They are also beneficial in restoring an already broken or worn-down tooth.
The Procedure of Placing Dental Crowns in Asheville
The placement of dental crowns usually envelopes two visits to the dentist. The first involves examining the health of your teeth and preparing for the crown procedure; if any decay is found during this phase, it'll be treated beforehand.
During this first visit, your dentist will reshape the affected tooth's surface to make adequate room for a crown. Impressions of your teeth are then made to provide an exact mold for the crown (at times sent to an external lab). Meanwhile, you may receive a temporary crown while waiting for your permanent one.
In your following appointment, the temporary crown will be replaced with your new custom-made one. Only after ensuring correct fit and color matching will this permanent crown be cemented into place.
Advantages of Dental Crowns
Not limited merely to their aesthetic advantages of providing you with an improved smile - dental crowns offer numerous oral health benefits:
1) Protection: Particularly useful for teeth weakened by decay or breakage; they provide strength and prevent further damage.
2) Restoration: For already damaged or worn-down teeth, crowns bring them back to their functionality and normal appearance.
3) Anchoring: Dental crowns are important anchors for other dental appliances like bridges.
4) Aesthetic Appeal: With the option of choosing materials that match your natural teeth color, dental crowns enhance your smile's aesthetic appeal.
Maintenance and Care
With proper care, dental crowns can last a lifetime. Prioritizing oral hygiene is important - regular brushing with fluoride toothpaste and flossing helps avoid decay and gum disease. Regular checkups for cleaning and assessment will ensure the healthy longevity of your crown—avoiding hard foods that may dislodge or damage the crown.
In Asheville, in particular, dental crowning has become an integral part of oral healthcare. If you want to maintain good oral health or simply enhance your smile’s aesthetic appeal, consult with a well-accredited dentist to examine whether dental crowns would be suitable for you. For its multiplicity of benefits from strength, durability, and appearance enhancement to affording high levels of comfort during and after the procedure – this restorative dentistry procedure has truly transformed countless smiles in the heart of Asheville!
**Zoe Dental**
**Address:** 10-A Yorkshire Street, Suite 110, Asheville, North Carolina, 28803
**Phone:** 828-348-1275
**Email:** [info@zoedental.com](info@zoedental.com)
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| perry01 | |
1,754,192 | Best CUET Coaching Institute in Delhi | CUET LIONS IS INDIA’S NO. 1 CUET COMPREHENSIVE INSTITUTE'. We provide CBSE plus Complete CUET... | 0 | 2024-02-07T09:25:50 | https://dev.to/cuet_lions/best-cuet-coaching-institute-in-delhi-1m22 | [CUET LIONS](https://cuetlions.com/) IS INDIA’S NO. 1 CUET COMPREHENSIVE INSTITUTE'. We provide CBSE plus Complete CUET Coaching by giving 100% scholarship on CUET Program. CUET LIONS provides an education system that opens up the plethora of opportunities and avenues for the student. CUET LIONS purpose is to organize and preserve the collective wisdom of CBSE plus CUET test takers and act as a destination for any kind of queries of student. CUET LIONS is a platform designed to help student to know everything about CUET exam starting from its exam preparation, student’s review of the college, connecting with faculties and as well getting into his/her dream university without any difficulty and also preparing for CBSE subjects to score exceptionally well in CBSE Board Exams. | cuet_lions | |
1,754,218 | Stay Ahead of the Curve: Online Cybersecurity Training at Your Fingertips | Cybersecurity has become an essential concern for individuals and organizations alike. With the... | 0 | 2024-02-07T09:50:28 | https://dev.to/veronicajoseph/stay-ahead-of-the-curve-online-cybersecurity-training-at-your-fingertips-27i8 | cybersecurity, ethicalhacking, cehcertification, networksecurity | Cybersecurity has become an essential concern for individuals and organizations alike. With the ever-evolving landscape of cyber threats, staying ahead of the curve is imperative to safeguard sensitive information and maintain a secure online presence. Fortunately, **[cybersecurity training online](https://www.h2kinfosys.com/courses/cyber-security-training-online/)** offers a convenient and effective solution to equip oneself with the necessary knowledge and skills to combat cyber threats effectively.
Gone are the days when cybersecurity was solely the responsibility of IT professionals. In today's interconnected world, everyone—from employees in organizations to individuals managing personal accounts—needs to be vigilant and proactive in protecting their digital assets. Online cybersecurity training provides accessible resources for individuals of all backgrounds to enhance their understanding of cyber threats and learn best practices for mitigating risks.
One of the key advantages of online cybersecurity training is its flexibility and accessibility. Unlike traditional classroom-based courses, online training allows learners to access materials at their own pace and convenience. Whether you're a busy professional juggling multiple responsibilities or a student looking to supplement your education, online courses offer the flexibility to learn anytime, anywhere. This accessibility eliminates barriers to entry and empowers individuals to take control of their cybersecurity education.
Moreover, online cybersecurity training caters to a diverse range of learning styles and preferences. Whether you prefer video tutorials, interactive modules, or written guides, there are plenty of resources available to suit your needs. Additionally, many online platforms offer hands-on labs and simulations, allowing learners to apply their knowledge in real-world scenarios. This practical approach not only reinforces learning but also builds confidence in tackling cybersecurity challenges.
Another compelling aspect of online cybersecurity training is its relevance and timeliness. Given the rapid pace at which cyber threats evolve, traditional textbooks and courses can quickly become outdated. However, online training platforms are constantly updated to reflect the latest trends and developments in the cybersecurity landscape. From emerging threats like ransomware and phishing attacks to best practices for securing cloud environments, online courses ensure that learners are equipped with the most current information and strategies.
Furthermore, online cybersecurity training offers a cost-effective solution compared to traditional education methods. With no need for physical classrooms or printed materials, online courses can be more affordable for both individuals and organizations. Additionally, many platforms offer subscription-based models or pay-as-you-go options, allowing learners to access high-quality training without breaking the bank. This affordability democratizes cybersecurity education and makes it accessible to a wider audience.
Beyond individual benefits, online cybersecurity training also provides significant advantages for organizations. In today's interconnected business landscape, data breaches and cyber attacks can have far-reaching consequences, ranging from financial losses to reputational damage. By investing in employee training, organizations can strengthen their cybersecurity posture and reduce the risk of costly security incidents. Online training allows employees to update their skills without disrupting their workflow, ensuring minimal impact on productivity.
Moreover, **[online cybersecurity training](https://www.h2kinfosys.com/courses/cyber-security-training-online/)** enables organizations to track and measure the effectiveness of their training initiatives. With built-in analytics and reporting features, administrators can monitor learner progress, identify areas for improvement, and ensure compliance with industry standards and regulations. This data-driven approach empowers organizations to make informed decisions and continuously improve their cybersecurity practices.
In addition to technical skills, online cybersecurity training also emphasizes the importance of soft skills such as risk management, communication, and critical thinking. Cybersecurity is not just about implementing technical solutions; it requires a holistic approach that considers human behavior, organizational culture, and regulatory compliance. By fostering a culture of security awareness, online training helps individuals and organizations develop a proactive mindset towards cybersecurity.
As cyber threats continue to evolve and become more sophisticated, the demand for skilled cybersecurity professionals is on the rise. Whether you're a seasoned IT professional looking to upskill or someone with no prior experience in cybersecurity, online training offers a pathway to a rewarding and in-demand career. Many online platforms offer certification programs recognized by industry leaders, providing learners with a credential that validates their expertise and opens doors to new opportunities.
Online cybersecurity training offers a convenient, accessible, and effective solution for individuals and organizations looking to stay ahead of the curve in today's digital landscape. By leveraging the flexibility, relevance, and affordability of online courses, learners can enhance their cybersecurity knowledge and skills to mitigate risks and protect against cyber threats. Whether you're a cybersecurity enthusiast, a seasoned professional, or an organization seeking to enhance your security posture, online training provides the resources you need to succeed in an increasingly interconnected world. | veronicajoseph |
1,754,223 | Free Online Test Platform | freetestapp.com is a free online tests platform that has been launched to help students practice... | 0 | 2024-02-07T09:59:06 | https://dev.to/freetestapp/free-online-test-platform-2hia | [freetestapp.com](https://www.freetestapp.com/) is a free online tests platform that has been launched to help students practice online tests for free. The objective behind freetestapp.com is to let students practice online tests for free for class 06 to Class 12 and entrance exams like SSC, RRB, NEET, JEE, IBPS etc. Freetestapp.com was launched by TutorArc which is an educational technology company based out of Delhi with over 11 years of experience in the market and this initiative aims to help millions of students from class 06th to 12th and from all around the India prepare for their exams by taking these free mock tests. These free mock tests are designed on the pattern of real exams and have been prepared by highly qualified teachers and subject experts in the industry who have helped thousands of students prepare well for their exams in past years. When a student signs up on freetestapp.com, he/she will be able to access all these online mock tests 24x7 without any registration or sign-up fee as we want students across all age groups to access these lessons without any hurdle or hurdle and prepare well for their exams that are coming in near future. The user can take any test as many times as they want at anytime they want using their smartphone or computer and can share their scores with friends on social media sites like Facebook so that they can track their growth over time with friends globally. We believe this initiative will help millions of students across the world prepare better for their exams in upcoming years and wish you all the best | freetestapp | |
1,754,248 | ECS Orchestration Part 1: Network | This is the first post in the ECS Orchestration series. In this part we begin by discussing the ECS... | 0 | 2024-02-29T13:22:16 | https://dev.to/dbanieles/ecs-orchestration-part-1-choosing-a-network-mode-47ba | aws, network, ecs, containers | This is the first post in the ECS Orchestration series. In this part we begin by discussing the ECS network, which is a crucial topic when it comes to containerised applications.
An orchestrator such as ECS is typically used to manage microservices or other systems consisting of several applications using Docker containers. One of the main advantages of using Docker is the possibility of hosting multiple containers on a single server.
When networking containers on the same server, it is important to choose the appropriate network type to effectively manage the containers according to specific requirements.
This article examines the main options of network with ECS and their advantages and disadvantages.
### Host mode
Using host mode, the networking of the container is tied directly to the underlying host that's running the container. This approach may seem simple, but it is important to consider the following:
When the host network mode is used, the container receives traffic on the specified port using the IP address of the underlying host Amazon EC2 instance.
There are significant drawbacks to using this network mode. You can’t run more than a single instantiation of a task on each host. This is because only the first task can bind to its required port on the Amazon EC2 instance. There's also no way to remap a container port when it's using host network mode.
An example of task definition with host network:
```
{
"essential": true,
"networkMode": "host"
"name": "myapp",
"image": "myapp:latest",
"portMappings": [
{
"containerPort": 8080,
"hostPort": 8080,
"protocol": "tcp"
}
],
"environment": [],
....
}
```
### Bridge mode
With bridge mode, you're using a virtual network bridge to create a layer between the host and the networking of the container. This way, you can create port mappings that remap a host port to a container port. The mappings can be either static or dynamic.
#### 1. Static port mapping
With a static port mapping, you can explicitly define which host port you want to map to a container port.
If you wish to manage only the traffic port on the host, static mapping might be a proper solution. However, this still has the same disadvantage as using the host network mode. You can't run more than a single instantiation of a task on each host.
This is a problem when an application needs to auto scaling, because a static port mapping only allows a single container to be mapped on a specific host port. To solve this problem, consider using the bridge network mode with a dynamic port mapping.
An example of task definition with bridge network and static port mapping:
```
{
"essential": true,
"networkMode": "bridge"
"name": "myapp",
"image": "myapp:latest",
"portMappings": [
{
"containerPort": 8080,
"hostPort": 8080,
"protocol": "tcp"
}
],
"environment": [],
....
}
```
#### 2. Dynamic port mapping
You can specify a dynamic port binding by not specifying a host port in the port mapping of a task definition, allowing Docker to pick an unused random port from the ephemeral port range and assign it as the public host port for the container. This means you can run multiple copies of a container on the host. You can also assign each container its own port on the host. Each copy of the container receives traffic on the same port, and clients sending traffic to these containers use the randomly assigned host ports.
An example of task definition with bridge network and dynamic port mapping:
```
{
"essential": true,
"networkMode": "bridge"
"name": "myapp",
"image": "myapp:latest",
"portMappings": [
{
"containerPort": 8080,
"hostPort": 0, <-- Dynamic port allocation by Docker
"protocol": "tcp"
}
],
"environment": [],
....
}
```
So far so good, but one disadvantage of using the bridge network with dynamic port mapping is the difficulty in establishing communication between services. Since services can be assigned to any port, it is necessary to open wide port ranges between hosts. It is not easy to create specific rules so that a particular service can only communicate with another specific service. Services do not have specific ports that can be used for security group network rules.
### Awsvpc mode
With the awsvpc network mode, Amazon ECS creates and manages an Elastic Network Interface (ENI) for each task and each task receives its own private IP address within the VPC. This ENI is separate from the underlying hosts ENI. If an Amazon EC2 instance is running multiple tasks, then each task’s ENI is separate as well.
The advantage of using awsvpc network mode is that each task can have a separate security group to allow or deny traffic. This means you have greater flexibility to control communications between tasks and services at a more granular level.
This means that if there are services that need to communicate with each other using HTTP or RPC protocols, we can manage the connection more easily and flexibly.
An example of task definition with awsvpc network:
```
{
"essential": true,
"networkMode": "awsvpc"
"name": "myapp",
"image": "myapp:latest",
"portMappings": [
{
//The container gets its own ENI.
// Which means that your container will act as a host a the port that you expose will be the port that you serve on.
"containerPort": 8080,
"protocol": "tcp"
}
],
"environment": [],
....
}
```
But when using the awsvpc network mode there are a few challenges you should be mindful of, infact every EC2 instances can allocate a limited range of ENI. This means that it's not possible to execute more container of the maximum limit of EC2 ENI. This behavior has an impact when an application needs to be auto scaled, infact the auto scaling can create another new host instance(EC2) to perform a tasks placement. This behaivior can potentially increases costs and wastes computational power.
**How can one avoid this behavior?**
When choose a ECS network mode like awsvpc and need to increase number of allocable ENI on the EC2 instance managed from the cluster , it's possible to enable awsvpcTrunking.
Amazon ECS supports launching container instances with increased ENI density using supported Amazon EC2 instance types. When you use these instance types, additional ENIs are available on newly launched container instances. This configuration allows you to place more tasks using the awsvpc network mode on each container instance.
You can enable the awsvpcTrunking in account setting with the AWS CLI:
```
aws ecs put-account-setting-default \
--name awsvpcTrunking \
--value enabled \
--profile <YOUR_PROFILE_NAME> \
--region <YOUR_REGION>
```
If you want to view your container instances with increased ENI limits with the AWS CLI:
```
aws ecs list-attributes \
--target-type container-instance \
--attribute-name ecs.awsvpc-trunk-id \
--cluster <YOUR_CLUSTER_NAME> \
--region <YOUR_REGION> \
--profile <YOUR_PROFILE_NAME>
```
It is important to know that not all EC2 instance types support awsvpcTrunking and certain prerequisites must be met to utilize this feature.
Please refer to the [official documentation](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/container-instance-eni.html) for further information.
Another thing to keep in mind that when using ENI trunking, is that each Amazon EC2 instance requires two IP addresses. One IP address for the primary ENI and another for the ENI trunk. In addition, also ECS activities on the instance require an IP address.
If you need very large scaling, there is a risk of running out of available IP addresses. This could cause Amazon EC2 startup errors or task startup errors. These errors occur because ENIs cannot add IP addresses within the VPC if no IP addresses are available.
To avoid this problem, make sure that the CIDR ranges of the subnet meet the requirements.
If using the Fargate launch type, the awsvpc is the only network mode supported
**Conclusions**
We have seen how the choice of network type for container orchestration on ECS affects the scalability and connectivity of the various services within the cluster. Depending on the type of network chosen, there are different behaviours that can bring advantages or disadvantages depending on the use case.
For a microservices application managed by ECS, awsvpc is probably the best network to choose because it allows you to easily scale your application and easily implement service-to-service communications. | dbanieles |
1,754,349 | Behaviour Driven Development in Ruby with RSpec | RSpec is a library for writing and running tests in Ruby applications. As its landing page states,... | 26,346 | 2024-02-07T11:32:58 | https://blog.appsignal.com/2024/01/24/behaviour-driven-development-in-ruby-with-rspec.html | ruby, rspec | RSpec is a library for writing and running tests in Ruby applications. As its landing page states, RSpec is: "Behaviour Driven Development for Ruby. Making TDD productive and fun". We will return to that last part later.
This post, the first of a two-part series, will focus on introducing RSpec and exploring how RSpec especially helps with Behaviour Driven Development in Ruby.
Let's dive in!
## The History of RSpec
RSpec started in 2005 and, through several iterations, reached version 3.0 in 2014. Version 3.12 has been available for almost a year. Its original author was Steven Baker, but the mantle has passed to several maintainers through the years: David Chelimsky, Myron Marston, Jon Rowe, and Penelope Phippen. Many contributors have also been part of the project.
When you read RSpec's good practices, you see this phrase early on: "focus on testing the behavior, not the implementation". That's not a strategy specific to RSpec; it's good advice for anyone writing tests.
In more practical terms, you should focus your tests on how the code you are testing behaves, not how it works.
For example, to test that a user's email address is valid, you should test that the `validate_email` method returns `false` when the email address is invalid. You are not testing a specific implementation but rather how that code reacts (i.e., behaves) when handling different strings that should be email addresses.
Behavior interests us: how the code acts and defines how our application will work. Furthermore, this approach simply lets us know whether things work (or not), and we can then be more relaxed to either fix or refactor the implementation. Our tests will tell us if the code's behavior has changed; we will know if our changes have been successful or not in the most direct way possible.
The inner workings of the code don't interest us so much. Of course, we don't want a bad implementation, but measuring a good implementation is much harder than knowing if the code does what it's expected to do or not.
Let's look at how to install RSpec next.
### Installing RSpec for Ruby
RSpec comes as a gem, `rspec-core`, so you can add it to a test group in your Gemfile. It's probably best you also add `rspec`. It's a meta gem that includes `rspec-core`, `rspec-expectations`, and `rspec-mocks`. You can also add the `rspec-rails` one in a Ruby on Rails project.
Tests usually live in the `spec/` folder at the root of your project, and you can launch them by providing a path to a file or a directory: `rspec spec/models/*rb`, for example.
Now let's turn to how the RSpec DSL is set up to help with behavior testing.
## RSpec DSL: How it Helps with Testing Behavior
RSpec's whole Domain Specific Language (DSL) is completely worked around behavior testing, giving you a direct way to describe the behavior you expect from your code within different contexts. A few parts could be smoother, but overall, tests in RSpec read directly as English, much like a good piece of Ruby code.
Tests in RSpec are not written as classes, with methods taking center stage as tests. Instead, tests are written as Ruby blocks (ever used `do .. end`?), which, thanks to the method name we pass to the block as an argument, makes things very easy to read.
The primary method used in RSpec tests is `describe`. `describe` will contain one or more tests and can even contain more `describe` calls. The second method is `it`. The `it` blocks are called examples and contain the actual assumptions; they are where the testing happens. Finally, RSpec relies on "expectations" within the `it` blocks. Using the `expect` method, we define how the subject of our test is expected to behave.
Now we can start writing some simple tests.
## Simplest Tests in RSpec for Ruby: `describe` and `it`
Let's imagine a `User` class. We want a `name` method that will output first and last names together if both are present (or just one, if one is missing). Those are the different behaviors we want to test.
Here is how the simplest of those contexts look expressed as an RSpec test.
```ruby
# first call to describe, as topmost one, its description or title is used to tell what we are testing, here the User class.
# this title can be a string or a class name
describe User do
# we are adding a second describe to regroup the tests focused on the `name` method
describe '#name' do
# our first example ! Note the description focusing on the behavior
it 'returns the complete name' do
# we define a user variable by instantiating a user
user = User.new(first_name: 'John', last_name: 'Doe')
# and here comes the expectation
expect(user.name).to eq('John Doe')
end
end
end
```
Look at the general structure: we start by describing the focus of our test in the `User` class, the method we are testing (`name`), and then present an expected behavior.
Note how the expectation is written: we **expect** the value returned by `user.name` **to equal** `'John Doe'`. The `eq` method is a matcher. It allows us to match the tested value (on the left) and the expected one (on the right). The `expect` part is always followed with `to` or `not_to` to dictate how the matcher that follows will be used.
## Handling Multiple Contexts
While this first test shows us how it's done, it needs to catch up to what we want. It only handles one case if both first and last names are present. Let's see how we can test another case if the first name is absent.
```ruby
describe User do
describe '#name' do
it 'returns the complete name when both first and last name are present' do
user = User.new(first_name: 'John', last_name: 'Doe')
expect(user.name).to eq('John Doe')
end
it 'returns only the last name when the first name is missing' do
user = User.new(last_name: 'Doe')
expect(user.name).to eq('Doe')
end
end
end
```
This looks more realistic, but we still need to test another case. The description is also relatively verbose and repetitive. We could add another layer of description between the `describe '.name'` call and the example for each one. Thankfully, though, RSpec gives us a more obvious synonym for `describe` to express what we need to express for different contexts: `context`.
```ruby
describe User do
describe '#name' do
context 'when both first and last name are present' do
it 'returns the complete name' do
user = User.new(first_name: 'John', last_name: 'Doe')
expect(user.name).to eq('John Doe')
end
end
context 'when the first name is missing' do
it 'returns only the last name' do
user = User.new(last_name: 'Doe')
expect(user.name).to eq('Doe')
end
end
end
end
```
Thanks to this, the whole file reads even more quickly and gives us, without much thinking, an understanding of exactly which behavior we are testing within different contexts.
## Defining the Subject of Tests
We can use the `subject` method to make the subject of our tests obvious.
```ruby
describe User do
describe '#name' do
subject { user.name }
context 'when both first and last name are present' do
let(:user) { User.new(first_name: 'John', last_name: 'Doe') }
it 'returns the complete name' do
expect(subject).to eq('John Doe')
end
end
context 'when only the first name is present' do
let(:user) { User.new(first_name: 'John') }
it 'returns the complete name' do
expect(subject).to eq('John')
end
end
# ... other contexts
end
end
```
This is especially handy to avoid repetition and add clarity.
## Handling Complex Setup (Before, After Hooks) in Ruby on Rails
In many cases, we need a bit more to prepare a context. Let's take, as an example, a class method on a Ruby on Rails model named `latest_three`. It's expected to return the last three users created in the database. If we have less than that, we should get whatever users we have. By omitting the topmost `describe`, here is how a test might look.
```ruby
# note that we are using the '::method_name' here to refer to a class method, '#method_name' is reserved to refer to an instance method's name
describe '::latest_three' do
context 'when more than three users are present' do
it 'returns three users' do
3.times { User.create(first_name: Faker::Name.first_name, last_name: Faker::Name.last_name) }
expect(User.latest_three.size).to eq(3)
end
end
context 'when no users are present' to
it 'returns an empty collection' do
expect(User.latest_three.empty?).to be(true)
end
end
end
```
> If you are unfamiliar with `Faker`, it's a Ruby library used to generate fake data such as names and dates through handy methods.
These two tests look ok, but the creation of the data doesn't belong to the example. It's important for the specific context, though: we need that data created **before** the example is run. To do so, we can use a `before` block. Those blocks are run before the tests that follow them (in each block's context), thus giving us a perfect opportunity to set up our data.
```ruby
describe '::latest_three' do
context 'when more than three users are present' do
before do
4.times { User.create(first_name: Faker::Name.first_name, last_name: Faker::Name.last_name) }
end
it 'returns three users' do
expect(User.latest_three.size).to eq(3)
end
end
context 'when no users are present' to
it 'returns an empty collection' do
expect(User.latest_three.empty?).to be(true)
end
end
end
```
Once again, I hope this shows how well thought-through the RSpec DSL is. Doesn't it read nicely and give us a good understanding of each context and the behavior we expect?
If we were tempted to destroy data or execute some other form of cleanup **after** a context, we could do so through an `after` block. This is especially useful if you are writing tests using a database without the comfort of built-in automatic database cleanup between test runs.
## Avoiding Repetition with `let` in RSpec for Ruby
We still lack a few more concepts to be able to write real-world tests. Let's take the case of email validation again.
```ruby
describe '#valid_email?' do
context 'when email does not contain an @' do
subject(:user) { User.new(email: 'bob') }
it { expect(user.valid_email?).to be(false) }
end
context 'when email does not have a tld' do
subject(:user) { User.new(email: 'bob@appsignal') }
it { expect(user.valid_email?).to be(false) }
end
context 'when email is valid' do
subject(:user) { User.new(email: 'bob@example.org') }
it { expect(user.valid_email?).to be(true) }
end
end
```
There are several repetitions, to the point of blurring the actual tests. We notice that the only thing that changes, in the setup of each context, is the actual value of the email address. Couldn't we use a variable to do this?
We can use `let` blocks. They allow us to define a memoized helper method. The value is cached across multiple calls in the relative context. `let`'s syntax is similar to the one we saw for the `subject` block: first, we pass a name for the helper, then a block to be evaluated. That block is lazy-evaluated. If we don't call it, it will never be evaluated.
```ruby
describe '#valid_email?' do
subject(:user) { User.new(email: email) }
context 'when email does not contain an @' do
let(:email) { 'bob' }
it { expect(user.valid_email?).to be(false) }
end
context 'when email does not have a tld' do
let(:email) { 'bob@appsignal' }
it { expect(user.valid_email?).to be(false) }
end
context 'when email is valid' do
let(:email) { 'bob@example.org' }
it { expect(user.valid_email?).to be(true) }
end
end
```
Note that the `subject` is moved up in the structure too: it will be evaluated within each context and thus use each context's `email` value. Here we can see the purpose of `subject` within a `describe` with multiple contexts: we define the subject of the test early to make it obvious. We can then focus on expressing each different context we want to check the subject behavior in.
### A Note on `let`
`let` is lazily defined. In the above example, `email` won't be instantiated and set until it's called. Once it is invoked, though, it's set. In effect, it's just like a memoized helper method.
Yet, in some cases, you might want to set the value associated with a `let` before the examples run. To do so, you can use `let!`. With `let!`, the defined memoized helper method is called within an implicit `before` hook for each example. In other words, the value associated with the `let!` is eagerly defined before the example is run.
Let's create a user in our context before we run our example:
```ruby
describe "#count_users" do
let(:account) { Account.create(name: 'Acc Ltd') }
let!(:user) { User.create(name: 'Jane', account: account) }
it "counts the users in the account" do
expect(account.count_users).to eq(1)
end
end
```
This prevents us from additional setup or even a call to `user` within the before hook to get the value memoized.
### `let` Vs Instance Variables in RSpec for Ruby
Some developers might be tempted to rely on instance variables through a `describe` or `context` and their `before` hooks:
```ruby
describe "#count_users" do
before do
@account = Account.create(name: 'Acc Ltd')
@user = User.create(name: 'Jane', account: @account)
end
it "counts the users in the account" do
expect(@account.count_users).to eq(1)
end
end
```
This is not very practical. It adds dependencies and state sharing between contexts, weakens isolation, and is more difficult to debug.
The additional issue is that, if you were to make a call to an instance variable that has not been initialized, you'd get a `nil` value in return. That's in contrast to the exception you'd get if you were to call a local variable that doesn't exist (raising a `NameError` exception).
So, when writing tests with RSpec, `let` is preferred, and `let!` is to be used when you need an eager evaluation. Other methods to handle variables are not recommended.
## Matchers in RSpec for Ruby
If `describe`, `context`, and `it` are very important to the structure of RSpec tests, the key part to making actual tests is matchers.
We have only seen a few, mainly `be()` and `eq()`. Those two are the simplest ones and are very handy. Here is a list of the others you should know about as a start:
- `eq`: test the equality of two objects (actually, their equivalence, the same as `==`); `expect(1).to eq(1.0) # is true`
- `eql`: test the equality of two objects (if they are identical, not just equivalent); `expect(1).to eql(1.0) # is false`
- `be`: test for object identity; `be(true)`, `be(false)` ...
- `be_nil`: test if an object is `nil`
- `be <= X`: test if a number is less or equal to a value (X); also works with `<`, `>`, `>=`, `==`
- `be_instance_of`: test if an object is an instance of a specific class; `expect(user.name).to be_instance_of(String)`
- `include`: test if an object is part of a collection; `expect(['a', 'b']).to include('a')`
- `be_empty`: test if a collection is empty; `expect([]).to be_empty`
- `start_with`, `end_with`: test if a string or array starts (or ends) with the expected elements; `expect('Brian is in the kitchen').to start_with('Brian')`, `expect([1, 2]).not_to start_with('0')`
- `match`: test if a string matches a regular expression; `expect(user.name).to match(/[a-zA-Z0-9]*/)`
- `respond_to`: test if an object responds to a particular method; `expect(user).to respond_to(:name)`
- `have_attributes`: test if an object has a specific attribute; `expect(user).to have_attributes(age: 42)`
- `have_key`: test if a key is present within a hash; `expect({ a: 1, b: 2 }).to have_key(:a)`
- `raise_error`: test if a block of code raises an error; `expect { user.name }.to raise_error(ArgumentError)`
- `change`: test that a block of code changes the value of an object or one of its attributes; `expect { User.create }.to change(User.count).by(1)`, `expect { user.activate! }.to change(user, :is_active).from(false).to(true)`
- `to_all`: test that all items in a collection match a given matcher; `expect([nil, nil, nil]).to all(be_nil)`
- `match_array`: test that one array has the same items as the expected one (the order isn't of importance); `expect([1, 3, 2]).to match_array([2, 1, 3])`
You can already write most of the tests you'll ever need with those matchers. To read more about matchers, you can check out [RSpec's documentation](https://rspec.info/features/3-12/rspec-expectations/built-in-matchers/).
## A Few Thoughts
As you have seen, we have yet to write a line of actual code; we just wrote tests. That might be the most crucial point of this article: RSpec's DSL and structure allow you to write your test first from the behavior point of view. When you start to work on a new class, you can first express the behavior as an RSpec example within a given context. Then, simply rely on the guard rails to make your implementation a reality.
That's actually how TDD works. We are not writing tests just for the sake of tests. Instead, we write tests to express the behavior we want to see from the code. In effect, those tests are merely a transcription (through RSpec DSL) of the behavior expected for a feature.
## Wrapping Up
To summarize what we have covered in this article:
- RSpec is a library that gives us a powerful DSL to express and test the behavior of code
- `describe` is the main element to structure tests in each file
- `context` is equivalent to `describe`, but is used to separate different contexts for testing code behavior
- `it` allows us to define examples: the blocks within which tests happen
- **expectations** define the actual tests with **matchers**
- `let` and `let!` allow us to define memoized helpers through custom-named blocks to avoid repetitions; `let!` is eagerly loaded
- `subject` allows us to clearly define what is being tested and can be named
In the next post, we will look at specific types of tests for different parts of a Ruby on Rails application.
Until then, happy coding!
**P.S. If you'd like to read Ruby Magic posts as soon as they get off the press, [subscribe to our Ruby Magic newsletter and never miss a single post](https://blog.appsignal.com/ruby-magic)!** | riboulet |
1,754,355 | TW Elements - Colours. Free UI/UX design course. | Colours Colours in Tailwind CSS are defined as classes that you can apply directly to your HTML... | 25,935 | 2024-02-07T12:00:00 | https://dev.to/keepcoding/tw-elements-colours-free-uiux-design-course-5e3l | beginners, tutorial, ux, uxdesign | **Colours**
Colours in Tailwind CSS are defined as classes that you can apply directly to your HTML elements. In this lesson, we'll learn how they work.
**Colour utility classes**
Tailwind CSS comes with a wide variety of predefined colours. Each colour has different shades, ranging from 100 (lightest) to 900 (darkest). You can use these colours and shades by adding the corresponding utility classes to your HTML elements.
For example, if you wanted to set the background colour of an element to light blue, you would add the .bg-blue-200 class to that element:
If you want to add a darker blue, you can use e.g. .bg-blue-500:
And so on:
**Background colour**
As you have already noticed from the examples above, we use the bg-{color} class (like .bg-blue-500) to assign a selected colour to an element.
There is no magic here anymore, so we will not dwell on the subject.
**Text colour**
The situation is similar with the colour of the text, with the difference that instead of bg- we use the text- prefix:
```
<h5 class="text-lg text-blue-500">What exactly is beauty?</h5>
```
And so on:
```
<h5 class="mb-3 text-lg text-blue-100">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-200">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-300">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-400">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-500">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-600">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-700">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-800">What exactly is beauty?</h5>
<h5 class="mb-3 text-lg text-blue-900">What exactly is beauty?</h5>
```
**Customizing colours**
While Tailwind provides a comprehensive set of colour classes, you might need to customize these for your specific project. You can do this in your Tailwind configuration file (tailwind.config.js).
You need to add theme object configuration, so you can customize the colors by extending the default colors or completely replacing them.
Suppose we want to create a custom colour with the value #123456;
[TAILWIND CONFIFURATION](https://tw-elements.com/learn/te-foundations/tailwind-css/colors/#mdb_d50a96be8c1c93ccdd2e68a1e56896bd84e8ba33):
```
theme: {
extend: {
colors: {
'custom-color': '#123456',
}
}
}
```
So we should add a theme object to our configuration file. Finally, our tailwind.config.js file should look like this; [TAILWIND.CONFIG.JS](https://tw-elements.com/learn/te-foundations/tailwind-css/colors/#mdb_492f455b23f89d2b58c7b90e570f9ba60f4ae98f):
```
/** @type {import('tailwindcss').Config} */
module.exports = {
content: ['./index.html', './src/**/*.{html,js}', './node_modules/tw-elements/dist/js/**/*.js'],
plugins: [require('tw-elements/dist/plugin.cjs')],
darkMode: 'class',
theme: {
extend: {
colors: {
'custom-color': '#123456',
}
}
}
};
```
After saving the file, we should be able to use the newly created .bg-custom-color class in our HTML.
It was just additional information that we will not use in the current project. So, if you added a custom color to your config for testing purposes, then when you're done experimenting, restore the tailwind.config.js file to its original state; [TAILWIND.CONFIG.JS](https://tw-elements.com/learn/te-foundations/tailwind-css/colors/#mdb_492f455b23f89d2b58c7b90e570f9ba60f4ae98f):
```
/** @type {import('tailwindcss').Config} */ module.exports = {
content: ['./index.html', './src/**/*.{html,js}', './node_modules/tw-elements/dist/js/**/*.js'],
plugins: [require('tw-elements/dist/plugin.cjs')],
darkMode: 'class',
};
```
**Change the background colour of the navbar**
Let's use the acquired knowledge to change the background colour of our navbar.
In your project, find the .bg-neutral-100 class in the navbar; HTML:
```
<!-- Navbar -->
<nav
class="flex-no-wrap relative flex w-full items-center justify-between bg-neutral-100 py-2 shadow-md shadow-black/5 dark:bg-neutral-600 dark:shadow-black/10 lg:flex-wrap lg:justify-start lg:py-4"
data-te-navbar-ref>
[...]
</nav>
```
Then replace it with the .bg-white class to change the color of the navbar to white.
```
<!-- Navbar -->
<nav
class="flex-no-wrap relative flex w-full items-center justify-between bg-white py-2 shadow-md shadow-black/5 dark:bg-neutral-600 dark:shadow-black/10 lg:flex-wrap lg:justify-start lg:py-4"
data-te-navbar-ref>
[...]
</nav>
```
Once the file is saved, the navbar should change from grey to white.
**[Demo and source code for this lesson](https://tw-elements.com/snippets/tailwind/ascensus/5284031)**
| keepcoding |
1,754,417 | Unlocking Success with QT Developers: A Comprehensive Guide | Are you seeking to revolutionize your software development journey? Look no further! Dive into the... | 0 | 2024-02-07T13:27:16 | https://dev.to/glorium/unlocking-success-with-qt-developers-a-comprehensive-guide-249b | Are you seeking to revolutionize your software development journey? Look no further! Dive into the realm of [QT developers](https://gloriumtech.com/hire-qt-developers/) and witness the transformation unfold. But first, let's understand the essence of QT development and its profound impact.
Understanding QT Development: Unveiling the Basics
Embark on a journey where innovation meets functionality - QT development. QT is a powerful cross-platform framework that facilitates the creation of dynamic applications with unparalleled efficiency and elegance. With its intuitive design and robust features, QT empowers developers to craft seamless user experiences across various platforms.
Exploring the Advantages of QT Development
Experience the unparalleled advantages offered by QT development:
Cross-Platform Compatibility: QT enables developers to build applications that seamlessly run across multiple platforms, including Windows, macOS, Linux, Android, and iOS.
Efficiency and Performance: Leveraging the power of C++, QT ensures optimal performance and efficiency, allowing developers to create high-performance applications with ease.
Rich User Interface: With its extensive library of UI components and widgets, QT empowers developers to design stunning user interfaces that captivate and engage users.
Community Support: Join a vibrant community of QT developers, where knowledge sharing and collaboration thrive. Benefit from a wealth of resources, tutorials, and forums to enhance your development journey.
Harnessing the Power of QT Development
Ready to embark on your QT development journey? Here's how to get started:
Master the Fundamentals: Familiarize yourself with the basics of QT development, including its core concepts, syntax, and best practices.
Explore QT Documentation: Delve into the comprehensive documentation provided by QT, which serves as a valuable resource for developers at all levels.
Hands-On Experience: Put your knowledge into practice by embarking on hands-on projects and experimenting with QT's features and functionalities.
Continuous Learning: Stay updated with the latest developments in QT development by actively participating in workshops, webinars, and conferences.
Conclusion
In conclusion, QT development opens doors to endless possibilities, empowering developers to create innovative and impactful applications across various platforms. Embrace the journey, unlock your potential, and pave the way for success in the dynamic world of software development.
| glorium | |
1,754,453 | Qu'est-ce qu'une fonction sans serveur ? | Un aperçu complet des fonctions sans serveur, discutant des tactiques de déploiement et choisissant le bon fournisseur FaaS dans l'industrie du logiciel d'aujourd'hui. | 0 | 2024-02-07T14:13:44 | https://dev.to/pubnub-fr/quest-ce-quune-fonction-sans-serveur--3336 | Définition des fonctions sans serveur
-------------------------------------
Les fonctions sans serveur sont des fonctions programmatiques à usage unique qui sont hébergées sur une infrastructure gérée par des [sociétés de cloud computing](https://www.pubnub.com/solutions/enterprise-software/). Ces fonctions sont invoquées via Internet et sont conçues pour automatiser les flux de travail, réduire la latence et fournir des capacités informatiques à la demande. Ces architectures sans serveur sont maintenues par des équipes d'ingénieurs pour garantir un temps de disponibilité quasi parfait, des instances redondantes dans le monde entier et une évolutivité à tout volume de demande réseau entrant.
**Qui crée les fonctions sans serveur ?**
-----------------------------------------
Les fonctions sans serveur sont créées par des développeurs de logiciels qui font passer le code de leurs produits sur des plateformes sans serveur afin de tirer parti des avantages de l'informatique sans serveur. Ce ne sont pas les sociétés de cloud computing elles-mêmes qui créent ces fonctions, mais leurs clients.
**Quel est l'avantage des fonctions et services sans serveur ?**
----------------------------------------------------------------
Les fonctions et services sans serveur offrent de nombreux avantages, notamment une meilleure maintenance du code, un hébergement rentable et la tranquillité d'esprit résultant de leur exécution sur une infrastructure gérée. Ce paradigme devient rapidement populaire en raison de ces avantages, et le déploiement d'un nouveau code est **plus rapide, plus simple et facilement automatisé**.
### **Quel est un exemple de fonction sans serveur ?**
Tous les principaux fournisseurs de cloud proposent des fonctions serverless :
- [PubNub Functions](https://www.pubnub.com/docs/serverless/functions/overview)
- Google Cloud Functions
- AWS Lambda
- Azure Functions
**Infrastructure sans serveur : Architecture monolithique vs. architecture microservice**
-----------------------------------------------------------------------------------------
Les fonctions sans serveur peuvent être considérées comme des microservices, un concept populaire dans l'environnement sans serveur. Le passage des plateformes monolithiques aux microservices encapsulés suscite un engouement croissant dans la communauté des développeurs de logiciels.
Pourquoi les entreprises utilisent-elles des fonctions et des architectures sans serveur ?
------------------------------------------------------------------------------------------
Historiquement, les monolithes ont de grandes bases de code unifiées, qui nécessitent un déploiement complet de l'ensemble de la plateforme pour tout envoi de nouveau code. Cela inclut les nouvelles fonctionnalités, mais aussi les corrections de bugs sur une seule ligne.
Les monolithes peuvent être pratiques dans certaines situations, mais lorsque la base de code d'une plateforme atteint le stade où l'équipe de développement est nombreuse, certaines tâches deviennent encombrantes.
Une architecture de microservices améliore la maintenabilité des bases de code et améliore l'expérience globale du développeur pour les équipes de développement de logiciels. Les microservices permettent à une grande organisation d'ingénierie de se segmenter en équipes autonomes faiblement couplées. Chaque équipe peut concentrer son attention sur quelques microservices qui fonctionnent indépendamment du reste de la plateforme. Il est à noter que si les microservices peuvent être maintenus de manière quelque peu indépendante, ils n'en restent pas moins des acteurs d'une équipe unifiée.
Grâce à l'architecture des microservices, les nouveaux développeurs peuvent être intégrés rapidement aux projets d'ingénierie, car ils n'ont pas besoin de comprendre en profondeur un monolithe entier pour commencer à apporter des contributions substantielles. Un autre avantage des microservices est que le déploiement de petites mises à jour de code pour des services uniques n'entraîne que peu ou pas de temps d'arrêt pour les clients. Lorsqu'un monolithe a besoin de mises à jour de code, cela peut signifier que tous les clients subissent un temps d'arrêt pendant la durée d'une fonction de déploiement sans serveur.
**Fonctions sans serveur et fonctions en tant que service (FaaS)**
------------------------------------------------------------------
Les éléments magiques des fonctions sans serveur sont la mise à l'échelle automatique et les déploiements de code redondants. Cela signifie qu'un développeur d'applications peut se préoccuper d'une seule chose : écrire un excellent code d'application. Les fournisseurs d'hébergement en nuage appellent cette offre de produits "Functions-as-a-Service", ou [FaaS](https://www.pubnub.com/learn/glossary/what-is-serverless-compute/) en abrégé.
Avec l'hébergement d'applications classique, les développeurs de logiciels doivent constamment se poser les questions suivantes lorsqu'ils écrivent leur code :
- Mes serveurs répondront-ils à toutes les demandes des clients, avec une très faible latence, quel que soit l'emplacement physique de chaque client ?
- Est-ce que je crée une marge d'erreur humaine dans mon processus de déploiement du code ?
- Mes serveurs peuvent-ils faire face à des augmentations soudaines du volume des demandes sans être surchargés ?
- Mes serveurs peuvent-ils faire face à des augmentations soudaines du volume des demandes sans gaspiller beaucoup d'argent ?
- Dois-je surveiller en permanence l’infrastructure de mon application ? J'aime bien dormir 8 heures par nuit.
**Ces questions ne s'appliquent pas lorsqu'un système logiciel est construit sur une plateforme avec des fonctions sans serveur**.
Le code des fonctions sans serveur devrait avoir une logique entièrement sans état, de sorte que les instances redondantes ne causeront pas d'incohérences pour les clients. Les fournisseurs d'hébergement en nuage ont généralement de nombreux points de présence dans le monde entier. Cela signifie que les serveurs sur lesquels tourne une application sont les plus proches de tous les utilisateurs finaux possibles. Le fournisseur d'hébergement cloud déploiera de manière redondante une fonction sans serveur dans des centres de données du monde entier, au même moment. C'est une bonne chose pour les clients d'un développeur, car leurs demandes côté client seront traitées avec le moins de latence possible. Toute la logique de mise en réseau est mise en œuvre par le fournisseur de cloud.
**Google et AWS Serverless Functions avec les plateformes d'hébergement cloud**
-------------------------------------------------------------------------------
Les fournisseurs d'hébergement cloud qui proposent des fonctions Serverless utilisent les meilleures pratiques standard de l'industrie pour le déploiement automatisé du code. Cela signifie qu'il n'y a aucun risque qu'une erreur humaine casse un service pendant le déploiement et cela permet d'expédier rapidement le nouveau code, avec peu ou pas de temps d'arrêt pour un produit web.
L'une des caractéristiques les plus précieuses de l'hébergement Serverless Function est l'autoscaling (mise à l'échelle automatique). Les fournisseurs d'hébergement cloud ont fait des coûts des serveurs inactifs une chose du passé pour leurs clients. Grâce à des logiciels comme Kubernetes, les services peuvent programmer la mise à l'échelle de leur infrastructure de manière automatisée. Ce nouveau type d'infrastructure "élastique" rend l'hébergement plus efficace, ce qui se traduit par d'importantes économies pour les entreprises qui achètent de l'hébergement en nuage.
**Fournisseurs FaaS et exemples de fonctions sans serveur**
-----------------------------------------------------------
Les sociétés d'hébergement en nuage proposent des plateformes FaaS à la pointe de la technologie. Les coûts des serveurs diminuent pour les consommateurs du monde entier, car les grandes entreprises technologiques construisent de plus en plus de fermes de serveurs. Cependant, tous les services FaaS ne se valent pas. Les plateformes FaaS ne sont pas comme la compagnie de téléphone. Chaque plateforme a des scénarios uniques dans lesquels elle brille.
### **Fonctions sans serveur AWS Lambda**
AWS[Lambda](https://aws.amazon.com/lambda/) est un environnement de fonctions sans serveur sur Amazon Web Services. Les langages de programmation pris en charge sont Java, Go, PowerShell, Node.js, C#, Python, Ruby, Rust et PHP. Il est idéal pour les opérations de calcul à la demande comme le traitement de fichiers.
### **Azure Functions Fonctions sans serveur**
[Azure Functions](https://docs.microsoft.com/en-us/azure/azure-functions/functions-overview) est un environnement de fonctions sans serveur sur Microsoft Azure. Les langages de programmation pris en charge sont C#, F#, Java, Python, JavaScript et TypeScript. Il est idéal pour créer des API à usage unique afin d'ajouter des fonctionnalités à une plateforme, par exemple en fournissant un point de terminaison pour stocker en toute sécurité les données d'une application.
### **Google Cloud Serverless Functions**
[Google Cloud Functions](https://cloud.google.com/functions/) est un environnement de fonctions sans serveur sur Google Cloud Platform. Les langages de programmation pris en charge sont JavaScript, Python, Go, .NET (C#), Ruby et PHP. Google Cloud Functions fournit un calcul sans serveur qui interagit succinctement avec d'autres services Google Cloud et applications clientes. Elles sont idéales pour les scénarios dans lesquels le traitement des données est essentiel, comme l'extraction de données pertinentes à partir d'images et de vidéos.
### **Fonctions**
[Functions](https://www.pubnub.com/products/functions/) est un environnement sans serveur qui permet d'exécuter des fonctions à la périphérie, en transformant, enrichissant et filtrant les messages lorsqu'ils transitent par le réseau PubNub à l'aide de JavaScript. Cette plateforme sans serveur diffère fondamentalement des autres car le gestionnaire d'événements de Function s'exécute en réponse à un événement de PubNub, par exemple lorsqu'un message est publié avec l'[API Pub/Sub de PubNub](https://www.pubnub.com/docs/serverless/functions/overview).
Un développeur peut exécuter du code sur un message PubNub en transit après sa publication, mais avant que le message n'atteigne un abonné. Il existe d'autres configurations d'exécution, notamment le non-blocage après la publication et un point d'accès à l'API REST auquel on peut accéder comme à un serveur Node.js. L'état peut être géré à l'aide d'un [KV-Store](https://www.pubnub.com/docs/serverless/functions/functions-apis/kvstore-module) construit dans l'environnement des fonctions. Il existe également un catalogue d'intégrations tierces open source sur le [PubNub Functions Catalog](https://www.pubnub.com/integrations/).
**Quel fournisseur sans serveur dois-je utiliser pour mon service ?**
---------------------------------------------------------------------
La réponse à cette question dépend du type de service qui doit être construit. Comme vous pouvez le voir avec les fournisseurs décrits ci-dessus, il y a différents langages de programmation qui sont utilisables, en fonction du cloud. L'élément le plus important à prendre en compte lors de la sélection d'un fournisseur est le suivant : quels sont les attributs critiques pour mon service ?
Les plus grandes entreprises de cloud (AWS, Azure, Google) proposent des solutions d'informatique sans serveur évolutives et rentables, conçues pour répondre à une grande variété de cas d'utilisation avec leurs produits de cloud génériques. Ces plateformes sans serveur simplifient la gestion de l'infrastructure et offrent une évolutivité à la demande pour les applications. Cependant, des entreprises comme PubNub se spécialisent dans la résolution de points douloureux spécifiques pour les développeurs, en particulier dans les cas d'utilisation en temps réel. Grâce à son environnement serverless unique, PubNub excelle par rapport aux produits serverless génériques exclusivement dans les scénarios en temps réel.
Les fonctions sans serveur de PubNub offrent une exécution à latence incroyablement faible, ce qui en fait la solution idéale pour les applications en temps réel telles que le chat, la localisation GPS, la signalisation IoT, les jeux multijoueurs, et bien plus encore. Ces fonctions, qui automatisent l'exécution du code de l'application en réponse à des événements, sont faciles à construire et à déployer, réduisant ainsi le temps de mise sur le marché. De plus, PubNub prend désormais en charge JavaScript et TypeScript pour le développement de fonctions, offrant ainsi plus de flexibilité aux développeurs.
Si vos cas d'utilisation impliquent des calculs lourds, nécessitent des langages qui ont besoin d'un accès au système d'exploitation et ne sont pas sensibles à la latence, vous trouverez peut-être que les offres étendues sans serveur des grands hébergeurs de cloud comme AWS, Azure et Google sont plus adaptées. Ces fournisseurs prennent en charge un large éventail de langages de programmation, notamment Node.js, Python, Java, Rust, PHP, .NET (C#), Ruby, etc.
Pour une comparaison complète de PubNub Functions et d'AWS Lambda, consultez notre [article de blog](https://www.pubnub.com/blog/comparing-pubnub-functions-vs-aws-lambda-functions/) qui fournit des informations approfondies sur le choix du bon fournisseur serverless pour votre entreprise.
Il convient également de noter que lorsqu'il s'agit d'applications sans serveur, la sécurité est un aspect crucial à prendre en compte. Soyez assuré que l'environnement serverless de PubNub donne la priorité à la sécurité des données, en offrant des mécanismes d'authentification robustes et des points d'extrémité d'API sécurisés pour protéger vos données.
En conclusion, que vous soyez une startup à la recherche d'une solution serverless rentable ou une [entreprise établie](https://www.pubnub.com/Solutions/Enterprise/) cherchant à tirer parti de la puissance de l'architecture serverless pour les applications critiques, la compréhension des forces et des capacités des différents fournisseurs serverless peut vous aider à prendre une décision éclairée.
Comment PubNub peut-il vous aider ?
===================================
Cet article a été publié à l'origine sur [PubNub.com.](https://www.pubnub.com/blog/what-is-a-serverless-function/)
Notre plateforme aide les développeurs à construire, fournir et gérer l'interactivité en temps réel pour les applications web, les applications mobiles et les appareils IoT.
La base de notre plateforme est le réseau de messagerie en temps réel le plus grand et le plus évolutif de l'industrie. Avec plus de 15 points de présence dans le monde, 800 millions d'utilisateurs actifs mensuels et une fiabilité de 99,999 %, vous n'aurez jamais à vous soucier des pannes, des limites de concurrence ou des problèmes de latence causés par les pics de trafic.
Découvrez PubNub
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Découvrez le [Live Tour](https://www.pubnub.com/tour/introduction/) pour comprendre les concepts essentiels de chaque application alimentée par PubNub en moins de 5 minutes.
S'installer
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Créez un [compte PubNub](https://admin.pubnub.com/signup/) pour un accès immédiat et gratuit aux clés PubNub.
Commencer
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La [documentation PubNub](https://www.pubnub.com/docs) vous permettra de démarrer, quel que soit votre cas d'utilisation ou votre [SDK](https://www.pubnub.com/docs). | pubnubdevrel | |
1,754,746 | Easily Replicate a Waiting List UI in .NET MAUI | In this article, we will enhance your XAML skills by replicating a waiting list UI inspired by this... | 0 | 2024-02-09T04:12:44 | https://www.syncfusion.com/blogs/post/waiting-list-ui-dotnet-maui.aspx | dotnetmaui, appdevelopment, mobile, ui | ---
title: Easily Replicate a Waiting List UI in .NET MAUI
published: true
date: 2024-02-07 13:06:40 UTC
tags: dotnetmaui, appdevelopment, mobile, ui
canonical_url: https://www.syncfusion.com/blogs/post/waiting-list-ui-dotnet-maui.aspx
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gsydceqykeotjh2o33rw.png
---
In this article, we will enhance your XAML skills by replicating a waiting list UI inspired by this [Dribble design](https://dribbble.com/shots/21284342-Mobile-app-waiting-room-before-a-virtual-visit "Waiting List UI design on Dribble design site").
## Start by knowing the structure
Let’s start by grasping the fundamental structure of the waiting list UI. To facilitate this, we’ve divided the article into clear steps, each representing a cluster of visual elements essential for replicating the UI.
Refer to the following image.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/01/The-Waiting-List-UI-We-Will-Replicate-1.png" alt="The Waiting List UI We Will Replicate" style="width:100%">
<figcaption>The Waiting List UI We Will Replicate</figcaption>
</figure>
## What specific skills will you be learning in XAML?
In addition to strengthening your XAML skills, you will learn to use:
- [Syncfusion .NET MAUI ListView](https://www.syncfusion.com/maui-controls/maui-listview "Syncfusion .NET MAUI ListView"): To display your information in a list in portrait or landscape orientation.
- [Syncfusion .NET MAUI Avatar View](https://www.syncfusion.com/maui-controls/maui-avatarview "Syncfusion .NET MAUI Avatar View"): To provide user images.
- [Border](https://learn.microsoft.com/en-us/dotnet/maui/user-interface/controls/border?view=net-maui-8.0 "Border support in .NET MAUI"): To add a border to the desired visual elements.
- [VerticalStack **L** ayout](https://learn.microsoft.com/en-us/dotnet/maui/user-interface/layouts/verticalstacklayout?view=net-maui-8.0 "VerticalStackLayout support in .NET MAUI") **:** To organize child views in a one-dimensional vertical stack.
- [HorizontalStackLayout](https://learn.microsoft.com/en-us/dotnet/maui/user-interface/layouts/horizontalstacklayout?view=net-maui-8.0 "HorizontalStackLayout support in .NET MAUI"): To organize child views in a one-dimensional horizontal stack.
## Schedule header
In the schedule header, we’ll render the following UI elements:
- [Main layout](#mainlayout)
- [Designing the schedule header](#designscheduleheader)
- [Adding .NET MAUI Avatar View reference](#mauiavatarview)
- [Designing UI elements](#designui)
### <a name="mainlayout">Main layout</a>
First, we’ll generate a page named MainPage.xaml, which serves as the container for the main layout that organizes the blocks outlined in the previous image. The chosen layout is **VerticalStackLayout** , to optimize the utilization of screen space.
Refer to the following code example.
```xml
<!-- Main layout -->
<VerticalStackLayout BackgroundColor="#e1eaf8"
Margin="0,0,0,-65">
<!-- Step 1: Add all the elements contained in the schedule header -->
<!-- Step 2: Add all the elements contained in the schedule item -->
</VerticalStackLayout>
```
We have finished implementing the main layout, so let’s design the schedule header in XAML.
### <a name="designscheduleheader">Designing the schedule header</a>
The schedule header encompasses an avatar, name, role, description, minutes, and a Get Help button. Notably, the design incorporates rounded bottom edges, achieved using the **Border** control.
Refer to the following code example.
```xml
<!-- 1. Schedule header -->
<Border StrokeShape="RoundRectangle 0,0,25,25"
StrokeThickness="0"
BackgroundColor="White">
<Grid RowDefinitions="Auto,Auto,Auto,Auto,Auto"
ColumnDefinitions="Auto,*"
Padding="30">
<!-- Add the Avatar element -->
<!-- Add name & role elements -->
<!-- Add description & minutes elements -->
<!-- Add the Get Help button element -->
</Grid>
</Border>
```
### <a name="mauiavatarview">Adding .NET MAUI Avatar View reference</a>
To display the user image, we will use thre Syncfusion .NET MAUI Avatar View:
1.To add the .NET MAUI Avatar Viewto your project, open the NuGet package manager in Visual Studio, search for [Syncfusion.Maui.Core](https://www.nuget.org/packages/Syncfusion.Maui.Core/ "Syncfusion.Maui.Core NuGet Package"), and then install it.
2.To register the handler for Syncfusion core, go to your **MauiProgram.cs** file. Add the **Syncfusion.Maui.Core.Hosting** namespace. Then, add the following line of code just after the line .**UseMauiApp<App>()** in the **CreateMauiApp** method.
```csharp
.ConfigureSyncfusionCore();
```
3.Then, add the namespace for .NET MAUI Avatar View.
```xml
xmlns:syncAvatar="clr-namespace:Syncfusion.Maui.Core;assembly=Syncfusion.Maui.Core"
```
4.Initialize and configure the Avatar Viewusing the [ImageSource](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Core.SfAvatarView.html#Syncfusion_Maui_Core_SfAvatarView_ImageSource "ImageSource property in .NET MAUI Avatar View") property.
```xml
<!-- Avatarview -->
<sfControl:SfAvatarView Grid.Column="0" Grid.Row="0" Grid.RowSpan="2"
ContentType="Custom"
ImageSource="model.jpeg"
VerticalOptions="Start"
Stroke="Transparent"
HorizontalOptions="Start"
WidthRequest="60"
HeightRequest="60"
CornerRadius="30"/>
```
### <a name="designui">Designing the UI elements</a>
To enhance the user experience, let’s enhance specific UI elements within the schedule header.
#### Designing name and role elements
Refer to the following code example to design the name and role elements.
```xml
<!-- Name & role -->
<Label Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="2" HorizontalTextAlignment="Center" Text="Dr. Brooklyn Simmons" FontSize="21"/>
<Label Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="2" HorizontalTextAlignment="Center" Text="Family Medicine, Primary Care" FontSize="15" TextColor="Silver" Margin="0,0,0,35"/>
```
#### Designing description and minutes
Refer to the following code example to design the description and minutes elements to ensure transparency about the estimated waiting time.
```xml
<!-- Description & minutes -->
<Label Grid.Column="0" Grid.Row="2" Text="Estimated waiting time:"/>
<Label Grid.Column="0" Grid.Row="3" Text="~16 minutes" TextColor="#224785"/>
```
#### Streamlining assistance with a Get help button
Refer to the following code example to design the Get help button.
```xml
<!-- Get help button -->
<Button Grid.Column="1" Grid.Row="2" Grid.RowSpan="3" WidthRequest="120" HorizontalOptions="End" Text="Get help" BackgroundColor="Transparent" TextColor="Black" CornerRadius="10" BorderWidth="1" VerticalOptions="Center" BorderColor="#cddefa" Margin="10,0,0,0"/>
```
## Building the schedule items
Let’s create a list of cards for the schedule, like in the following image.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/01/Building-the-schedule-items-in-.NET-MAUI.png" alt="Building the schedule items in .NET MAUI" style="width:100%">
<figcaption>Building the schedule items in .NET MAUI</figcaption>
</figure>
This section includes the following elements:
- Populating the cards list.
- Designing the individual elements in a card.
### Populating the cards list
We’ll add some mock data to visualize the final list result by following these steps. Feel free to use any data you prefer.
#### 1. Create a Model folder
Set up a **Model** folder and add the **Schedule.cs** class to it. Define the necessary attributes that we’ll be utilizing.
Refer to the following code example.
```csharp
public class Schedule
{
private string picture;
private string minutes;
private string description;
private string time;
private bool playBasket;
private bool readArticle;
public string Picture
{
get { return picture; }
set { picture = value; }
}
public string Minutes
{
get { return minutes; }
set { minutes = value; }
}
public string Description
{
get { return description; }
set { description = value; }
}
public string Time
{
get { return time; }
set { time = value; }
}
public bool PlayBasket
{
get { return playBasket; }
set { playBasket = value; }
}
public bool ReadArticle
{
get { return readArticle; }
set { readArticle = value; }
}
}
```
#### 2. Develop a ViewModel with mock data
Let’s set up a ViewModel populated with mock data. First, create a folder named **ViewModel**. Then, create a file called **ScheduleViewModel**. **cs** in it.
```csharp
public class ScheduleViewModel
{
private ObservableCollection<Schedule> scheduleCollection;
public ObservableCollection<Schedule> Schedule
{
get { return scheduleCollection; }
set { scheduleCollection = value; }
}
internal void GenerateInfo()
{
scheduleCollection = new ObservableCollection<Schedule>();
scheduleCollection.Add(new Schedule { Time = "1:40 PM", Picture = "", Minutes = "16 minutes", Description = "Maybe you want to make your waiting more pleasant?", PlayBasket = true, ReadArticle = false });
scheduleCollection.Add(new Schedule { Time = "1:25 PM", Picture = "", Minutes = "25 minutes", Description = "We are actively preparing for your visit. Thank you for your patience. Our dedicated team is ensuring a smooth, efficient, and prompt service for you.", PlayBasket = false, ReadArticle = true });
scheduleCollection.Add(new Schedule { Time = "1:28 PM", Picture = "", Minutes = "20 minutes", Description = "Maybe you want to make your waiting more pleasant?", PlayBasket = true, ReadArticle = false });
}
public ScheduleViewModel()
{
GenerateInfo();
}
}
```
Then, populate this **ViewModel** with mock data to simulate the appearance of the schedule list. Lastly, ensure that your XAML includes references to this ViewModel.
```csharp
public MainPage()
{
InitializeComponent();
BindingContext = new ViewModels.ScheduleViewModel();
}
```
#### 3. Adding the ListView
Once we have the mock data ready to display in the UI list, let’s add a list view. This will enable us to visualize the previously added mock data. For this, we will use the Syncfusion .NET MAUI ListView control.
First, refer to the [Getting started with .NET MAUI ListView](https://help.syncfusion.com/maui/listview/getting-started "Getting started with .NET MAUI ListView") documentation. Then, follow these steps to implement the control:
1.Add the [Syncfusion.Maui.ListView](https://www.nuget.org/packages/Syncfusion.Maui.ListView/ "Syncfusion.Maui.ListView NuGet Package") NuGet package.
2. Go to the **MauiProgram.cs** file and register the handler for the Syncfusion .NET MAUI ListView. To do so, navigate to the **CreateMauiApp** method and then, just before the line **return builder.Build();**, add the **builder.ConfigureSyncfusionListView();** method.
3. Now, add **Syncfusion.Maui.ListView** namespace in the XAML page.
```xml
xmlns:syncfusion="clr-namespace:Syncfusion.Maui.ListView;assembly=Syncfusion.Maui.ListView"
```
4. Finally, initialize the ListView control using the following code example in your XAML page.
```xml
<listView:SfListView ItemsSource="{Binding Schedule}"
ItemSize="215"
ScrollBarVisibility="Never">
<listView:SfListView.ItemTemplate>
<DataTemplate>
<Grid ColumnDefinitions="Auto,*"
RowDefinitions="Auto,Auto,*,Auto,Auto,Auto"
Padding="15,20,20,0">
<!-- Add the time, avatar, and line elements. -->
<!-- Add the border: minutes, and description elements. -->
</Grid>
</DataTemplate>
</listView:SfListView.ItemTemplate>
</listView:SfListView>
```
### Designing the individual item elements in a card
Let’s design the individual elements within each schedule card.
#### Time, avatar, and line
We will display the time description using a simple **Label**. For the avatar, we will use the Syncfusion AvatarView again (since it’s already implemented, you won’t need to implement it again).
We’ll use a BoxView to create the line. Note that it’s also possible to create this line using a .NET MAUI line shape. However, for this exercise, we’ll use the BoxView.
Refer to the following code example.
```xml
<!-- Time -->
<Label Grid.Row="0" Grid.Column="1" Text="{Binding Time}" TextColor="#1b4485" Margin="10,0,0,5"/>
<!-- Avatar -->
<sfControl:SfAvatarView Grid.Column="0" Grid.Row="1"
ContentType="Default"
VerticalOptions="Start"
Stroke="Transparent"
BackgroundColor="White"
HorizontalOptions="Start"
WidthRequest="40"
HeightRequest="40"
CornerRadius="20"/>
<!-- Line -->
<BoxView Grid.Column="0" Grid.Row="2" Grid.RowSpan="2" Opacity="0.3" HorizontalOptions="FillAndExpand" WidthRequest="1" Color="#1690F4"/>
```
#### Border: minutes and description
We’ve reached the final section of code to complete our UI! Here, we’ll add a **Border** control to achieve the card’s rounded effect and include necessary information like the duration in minutes and description.
Refer to the following code example.
```xml
<Border Grid.Column="1" Grid.Row="1" Grid.RowSpan="2"
Margin="10,0,0,0"
StrokeShape="RoundRectangle 15"
StrokeThickness="0"
BackgroundColor="White"
HeightRequest="170">
<VerticalStackLayout Padding="15" Spacing="10">
<!-- Minutes -->
<Label>
<Label.FormattedText>
<FormattedString>
<Span Text="Updated estimated waiting time:" FontSize="15"/>
<Span Text="{Binding Minutes, StringFormat='~{0} minutes.'}" FontSize="14"/>
</FormattedString>
</Label.FormattedText>
</Label>
<!-- Description -->
<Label Text="{Binding Description}" TextColor="#636c7a" />
<Button Text="Play Basketball" BackgroundColor="#e0ecff" IsEnabled="True" IsVisible="{Binding PlayBasket}" CornerRadius="20" TextColor="#1b4485"/>
</VerticalStackLayout>
</Border>
```
That’s all! Our UI is done!
## Conclusion
Thanks for reading! In this blog, we enhanced your XAML knowledge by teaching you how to replicate a waiting list UI using Syncfusion [.NET MAUI](https://www.syncfusion.com/maui-controls "Syncfusion .NET MAUI controls") controls. Try out the steps outlined in the post and leave your thoughts in the comments section below.
Syncfusion’s [.NET MAUI](https://www.syncfusion.com/maui-controls "Syncfusion .NET MAUI controls") controls were created from the ground up using .NET MAUI, which makes them feel like native framework controls. These controls are optimized to manage large amounts of data, making them ideal for building top-notch, cross-platform mobile and desktop apps.
If you have any questions or need assistance, don’t hesitate to reach out to us through our [support forum](https://www.syncfusion.com/forums "Syncfusion Support Forum"), [support portal](https://support.syncfusion.com/ "Syncfusion Support Portal"), or [feedback portal](https://www.syncfusion.com/feedback/maui "Syncfusion Feedback Portal"). We are always available to help you!
## Related blogs
- [Syncfusion .NET MAUI 2024 Road Map](https://www.syncfusion.com/blogs/post/dotnet-maui-2024-road-map.aspx "Blog: Syncfusion .NET MAUI 2024 Road Map")
- [Chart of the Week: Creating a .NET MAUI Bar Chart to Visualize Type 1 Diabetes Prevalence](https://www.syncfusion.com/blogs/post/dotnet-maui-bar-chart-diabetes.aspx "Blog: Chart of the Week: Creating a .NET MAUI Bar Chart to Visualize Type 1 Diabetes Prevalence")
- [Introducing the New .NET MAUI PullToRefresh Control](https://www.syncfusion.com/blogs/post/dotnet-maui-pull-to-refresh.aspx "Blog: Introducing the New .NET MAUI PullToRefresh Control")
- [Introducing the .NET MAUI Navigation Drawer Control](https://www.syncfusion.com/blogs/post/dotnet-maui-navigation-drawer.aspx "Blog: Introducing the .NET MAUI Navigation Drawer Control")
- [Chart of the Week: Creating a .NET MAUI Multiple Fast Line Chart to Analyze the Impact of Exported Goods on GDP](https://www.syncfusion.com/blogs/post/maui-fastline-chart-export-vs-gdp.aspx "Blog: Chart of the Week: Creating a .NET MAUI Multiple Fast Line Chart to Analyze the Impact of Exported Goods on GDP") | gayathrigithub7 |
1,754,753 | FluxNinja Aperture v1.0 - Managed rate-limiting service, batteries included | The FluxNinja team is excited to launch “rate-limiting as a service” for developers. This is a start... | 0 | 2024-02-08T05:50:09 | https://dev.to/fluxninjahq/fluxninja-aperture-v10-managed-rate-limiting-service-batteries-included-1405 | launch, ratelimiting, generativeai, aiops | The FluxNinja team is excited to launch “rate-limiting as a service” for developers. This is a start of a new category of essential developer tools to serve the needs of the AI-first world, which relies heavily on effective and fair usage of programmable web resources.
> Try out [FluxNinja Aperture](https://fluxninja.com/) for rate limiting. Join our [community on Discord](https://discord.gg/U3N3fCZEPm), appreciate your feedback.
FluxNinja is leading this new category of “managed rate-limiting service” with the first of its kind, reliable, and battle-tested product. After its first release in 2022, FluxNinja has gone through multiple iterations based on the
feedback from the open source community and paid customers. We are excited to bring the stable version 1.0 of the service to the public.
## The world needs a managed rate-limiting service
Whether you are self-hosting a service or using a managed-service, balancing the cost and performance remains a challenge. When hosting on your own, you are responsible for scaling to keep up with demand while keeping costs under control. When using a managed service, you have to comply with their request quotas while keeping usage and costs under control.
This is especially true for applications that use Large Language Models (LLMs). If using cloud-based LLMs, you have to comply with their rate-limits. If using self-hosted LLMs, you have to manage the infrastructure and ensure fair usage. And given the high cost of LLMs, and the shortage of resources such as GPUs, it is crucial to ensure fair usage and cost-efficiency.
To ensure fair usage and deliver a good user experience while being profitable, developers need to code and manage rate limiting and caching infrastructure. It requires significant engineering efforts and expertise.
FluxNinja Aperture solves this challenge of building and managing production-grade rate-limiting by providing a managed-rate-limiting service to enforce and comply with rate-limits based on various criteria such as:
- Limits based on no. of requests per second
- Per-user limits based on consumed tokens
- Limits based on subscription plans
- Limits based on token-bucket algorithm
- Limits based on concurrency
FluxNinja utilizes a unique approach by separating rate-limiting infrastructure from the core application, which developers don’t need to code or manage anymore. They only need to integrate Aperture SDK, and then rate limiting policies can be updated via UI or API.
> We aim to bring production-grade rate-limiting to every app
## Overview of FluxNinja Aperture
With FluxNinja Aperture, application developers can enforce rate-limits on the usage of their services or comply with rate-limits of various external services. This ensures reliability of your services, fair usage and cost control.
FluxNinja Aperture provides a managed rate-limiting service that handles the complexities behind the scenes, requiring only simple SDK integration in your application.
These are the key features of FluxNinja Aperture rate-limiting service:
**Rate & Concurrency Limiting**
Optimize cost and ensure fair access by implementing fine-grained rate-limits. Regulate the use of expensive pay-as-you-go APIs such as OpenAI and reduce the load on self-hosted models such as Mistral.
**Caching**
Cache LLM results and reuse them for similar requests to reduce cost and boost performance.
**Request Prioritization**
Manage utilization of constrained LLM resources at the level of each request by prioritizing paid over free tier users and interactive over background queries. Ensure fair access across users during peak usage hours.
**Workload observability**
Get unprecedented visibility into your workloads with detailed traffic analytics on request rates, tokens, and latencies sliced by features, users, request types, and any other arbitrary business attribute.
For more info, check out [FluxNinja Aperture Docs](https://docs.fluxninja.com/)
## Challenges with traditional rate-limiting solutions
Traditional approaches to rate-limiting, typically involving custom-built solutions with in-memory data stores such as Redis, have presented significant
challenges.
Managing the codebase and infrastructure for rate-limiting demands regular attention from engineers and DevOps, incurring significant costs.
API gateways work for limited use cases; they lack the context-specific understanding required for business aware rate-limiting (e.g., per-user limits or subscription-based restrictions).
There is currently no ready-made solution where a distributed application needs to comply with rate-limits of an external service.
These limitations highlight the need for a more efficient, context-aware, and easy-to-manage rate-limiting solution suitable for modern application demands.
## How FluxNinja Aperture solves these gaps
Aperture separates rate-limiting infrastructure from the application code. You can self-host it using the Aperture open source package or use the hosted solution - Aperture Cloud. To manage rate-limits, you only need to integrate Aperture SDKs in your programming language.
Benefits compared to custom Redis-based or makeshift solutions:
- No need to code and manage complex rate-limiting algorithms and infrastructure
- Rate-limit policies and algorithms are updated centrally via UI or API rather than application code changes
- Real-time analytics dashboards to monitor and tune configurations
> With FluxNinja Aperture, the heavy lifting is offloaded, allowing you to focus
> on business logic while still retaining control over policies.
FluxNinja Aperture also integrates with existing service mesh and API gateways, giving a quick upgrade to your existing rate-limiting infrastructure.
You can easily configure these constraints using Aperture policies. And then wrap your code block with Aperture SDK calls where you use these external or internal services. Using the Aperture Cloud UI, you’ll be able to monitor the
workload and effectiveness of rate-limit policies.
Check out [this example](https://docs.fluxninja.com/get-started/) to get started with enforcing or complying with rate-limits using FluxNinja Aperture.
## Customer case study
CodeRabbit is a leading AI Code Review tool and they are an early adopter of FluxNinja Aperture. The CodeRabbit app consumes several LLM APIs. They offer
code review services through various subscription tiers to their users, including a free trial and an unlimited plan for open source projects. The high cost of LLM services and huge demand for their own service made it a challenge
to offer an accessible pricing for their users while being cost-efficient. CodeRabbit uses FluxNinja Aperture to prioritize, cache, and rate-limit requests
based on user tier preference and time criticality. FluxNinja helps them [deliver a great user experience while being cost-efficient](https://blog.coderabbit.ai/blog/how-we-built-cost-effective-generative-ai-application).
## Conclusion (tl;dr;)
Rate limiting is crucial for web services, especially for those using Generative AI, to ensure fair usage, cost-efficiency, and a better user experience. Traditional methods often require heavy engineering work and struggle to address
more nuanced needs such as user-specific or token-based limits.
FluxNinja Aperture solves this by providing an SDK-driven managed-rate-limiting service, making it easy to enforce your own rate-limits and comply with rate limits of the services you use. With FluxNinja Aperture, teams do not need to
invest their engineering bandwidth in building and maintaining complex rate limiting infrastructure. You can self-host FluxNinja Aperture on your premise or
use the cloud offering at a nominal cost. It is as easy as integrating the FluxNinja SDK in your Node.js, Python, Golang, or Java backend apps.
FluxNinja team is excited to unveil this tool publicly for developers. Join us in this journey of bringing production-grade rate-limiting to every app.
> Visit [FluxNinja Aperture docs](https://docs.fluxninja.com/) to get started with enforcing or complying with rate limits now. | gitcommitshow |
1,754,797 | Internationalization with i18next + react-i18n 🌎 | Hey, this is just a example, on my machine worked! It's important to know how to deal with... | 0 | 2024-02-07T17:45:53 | https://dev.to/guim0/internationalization-with-i18next-react-i18n-4m28 | javascript, react, braziliandevs, beginners | ## Hey, this is just a example, on my machine worked!
It's important to know how to deal with multiple kinds of users, and the one of the most important barriers is the language so it's very important that your project has some sort of internationalization.
There are many forms implement Internationalization on you project, but the quickest and easiest i found was with i18next + react-i18n.
## How to:
- Create your project (i use [vite](https://vitejs.dev/guide/#scaffolding-your-first-vite-project)):
```bash
npm create vite@latest
```
- Add i18next + react-i18n to your project
```bash
npm install react-i18next i18next --save
```
- Create a folder called `lib` and create a file called `i18n.ts`:
> should look like this
```javascript
import i18n from "i18next";
import { initReactI18next } from "react-i18next";
i18n.use(initReactI18next).init({
resources: {},
lng: "en", // the default language you want on your project
});
```
- Create another folder on `src` called `locale`, there you can add your `.json` files, on this example i created two:
- `en.json` for English and `pt.json` for Portuguese:
- `en.json`
```javascript
{
"translation":{
"header": "Our Header",
"footer": "Our Footer {{year}}"
}
}
```
- `pt.json`
```javascript
{
"translation":{
"header": "Nosso Cabeçalho",
"footer": "Nosso Rodape {{year}}"
}
}
```
---
### Now go back on your `i18n.ts` file:
> should look like this
```javascript
import i18n from "i18next";
import { initReactI18next } from "react-i18next";
//Add the translation files
import enTranslations from "../locale/en.json";
import ptTranslations from "../locale/pt.json";
i18n.use(initReactI18next).init({
resources: {
en: { ...enTranslations },
pt: { ...ptTranslations },
},
lng: "en",
});
```
## Final Steps!
- Go on your `main.tsx` file and import the i18n.ts file:
```javascript
import "./lib/i18n.ts";
```
### Now we have to make usage of this, let's go on App.tsx
- Let's add the `useTranslation` hook:
```javascript
const {
t,
i18n: { changeLanguage, language },
} = useTranslation();
```
- Create a useState just switch between the languages:
`const [currentLang, setCurrentLang] = useState(language);`
- Create a simple function to switch the languages:
```javascript
const switchLang = () => {
const newLang = currentLang === "en" ? "pt" : "en";
changeLanguage(newLang);
setCurrentLang(newLang);
};
```
- Change your App.tsx so we can test our theory!
> Should look like this
```javascript
return (
<>
<h1>{t("header")}</h1>
<button type="button" onClick={switchLang}>
Change Language manually
</button>
<footer>
<h1>{t("footer", { year: new Date().getFullYear() })}</h1>
</footer>
</>
);
```
- As you can see, to use the translation we have to pass the `t` from `useTranslation` with the tokens we created on our .json languages.
## Result
On English!
On Portuguese!
# I Hope this could helped you somehow!
How to find me?
- Github: https://github.com/guim0
- LinkedIn: https://www.linkedin.com/in/guim0-dev/ | guim0 |
1,754,871 | How We Reorganised Engineering Teams at Coolblue for Better Ownership and Business Alignment | In this post, I will share my experiences leveraging Domain Driven Design strategies and Team... | 0 | 2024-02-07T21:18:52 | https://amanagrawal.blog/2024/02/07/how-we-reorganised-engineering-teams-at-coolblue-for-better-ownership-and-business-alignment/ | teamtopologies, domaindrivendesign, architecture | ---
title: How We Reorganised Engineering Teams at Coolblue for Better Ownership and Business Alignment
published: true
date: 2024-02-07 20:28:24 UTC
tags: teamtopologies,domaindrivendesign,softwarearchitecture
canonical_url: https://amanagrawal.blog/2024/02/07/how-we-reorganised-engineering-teams-at-coolblue-for-better-ownership-and-business-alignment/
---
In this post, I will share my experiences leveraging Domain Driven Design strategies and Team Topologies to reorganise two product engineering teams in the Purchasing domain at [Coolblue](https://www.coolblue.nl/) _(one of the largest e-commerce companies in the Netherlands)_, along business capabilities to improve team autonomy, reduce cognitive load on teams and improve our architecture to better align with our business.
**Disclaimer** : I am not an expert in Team Topologies, I have only read the book twice and spoken to one of the core team members of Team Topologies creators. I am always looking to learn more about effectively applying those ideas and this post is just one of the ways we applied it to our problem space. YMMV!🙂
### [Context](#context)
Purchasing domain is one of the largest at Coolblue in terms of the business capabilities we support and the number of engineering teams _(4 as of this writing, possibly growing in the future)_ and it has one very critical goal: to ensure we have the right kind of stock available to sell in our central warehouse at all times without over or under stocking and secure most optimum vendor agreements to improve profitability of our purchases. Our primary stakeholders are supply planners and buyers in various product category teams that are responsible for various categories of products we sell.
We buy stock for upwards of tens of thousands of products to meet our growing customer demands, so its absolutely critical that not only we are able to make good buying decisions (which relies on a lot of data delivered timely from across the organisation) but that we’re also able to manage pending deliveries and delivered stock efficiently and effectively (which relies on timely and accurate communications with suppliers).
### [Growth of the Purchasing Domain](#purchasing-domain-growth)
Based on the [strategic Domain Driven Design terminology](https://vladikk.com/2018/01/26/revisiting-the-basics-of-ddd/) Purchasing would be categorised as a supporting domain i.e. Purchasing capabilities are not our core differentiator. The workings of the domain are completely opaque to end customers. Most organisations will have similar purchasing processes and often similar systems _(sometimes these systems are bought instead of being built)._
However, over the last 10 years Purchasing domain has also increased in complexity, we have expanded our business capabilities: data science, EDI integration, supplier performance measurement, stock management, store replenishment, purchasing agreements and rebates etc. We have come to rely on more accurate and timely data to make critical purchasing decisions. Being able to quickly adapt our purchasing strategies during COVID-19 helped us stay on our business goals. For the most part we have built our own software due to the need to tackle this increased complexity, maintain agility in the face of global upset events and to integrate with the rest of Coolblue more effectively and efficiently. The following sub-domain map shows a very high level composition of the Purchasing domain:
[](https://codequirksnrants.files.wordpress.com/2024/02/image.png)
_High level break down of the Purchasing domain (simplified)_
For this post, I will be focussing on the Supply sub-domain (shown in blue above) where we redesigned the engineering team organisation.
### [Domain vs Sub-Domain vs Bounded Contexts vs Teams](#dom-subdom-bc)
In DDD terminology, a **sub-domain** is a part of the **domain** with specific logically related subset of overall business responsibilities, and contributes towards the overall success of the domain. A domain can have multiple sub-domains as you can see the above visual. A sub-domain is a part of the problem space.
Sometimes it can be a bit difficult to differentiate between a domain and a sub-domain. From my pov, its all just domains. If a domain is large and complex enough, we tend to break it down into discrete areas of responsibilities and capabilities called sub-domains. But I don’t think this is hard and fast rule.
A **[bounded context](https://martinfowler.com/bliki/BoundedContext.html)** is the one and only place where the solution (often software) to a specific business problem lives, the terminology captured here is consistent in its usage and meaning. It represents an area of applicability of a domain model. E.g. _Supplier Price and Availability_ context will have software systems that know how to provide supplier prices and stock availability on a day to day basis. These terms have an unambiguous meaning in this context. The model that helps solve the problem of prices and stock availability is largely only applicable here and shouldn’t be copied in other bounded contexts because that will duplicate knowledge in multiple places and will introduce inconsistencies in data leading to expensive to fix bugs. Bounded contexts therefore provide a way to encapsulate complexities of a business concept and only provide well defined interfaces for others to interact with.
In an ideal world each sub-domain will map to exactly one bounded context owned and supported by exactly one team, but in reality multiple bounded contexts can be assigned to a sub-domain and one team might be supporting multiple bounded contexts and often multiple software systems in those contexts.
Here’s an illustration of this organisation _(names are for illustrative purposes only)_:
[](https://codequirksnrants.files.wordpress.com/2023/12/image-4.png)
_An illustration of relationship between domain, sub-domain and bounded contexts (assume one team per sub-domain)_
I am not going to go into the depths of strategic DDD but [here](https://vladikk.com/2018/01/26/revisiting-the-basics-of-ddd/) [are](https://github.com/ddd-crew/ddd-starter-modelling-process?tab=readme-ov-file#understand) some [excellent](https://medium.com/nick-tune-tech-strategy-blog/domains-subdomain-problem-solution-space-in-ddd-clearly-defined-e0b49c7b586c) places to [study](https://verraes.net/#blog) it and understand it better. The strategic aspects of DDD are really quite crucial to understand in order to design software systems that align well with business expectations.
### [Old Team Structure](#old-team-structure)
Simply put, the Supply sub-domain is primarily responsible for creating and sending appropriate purchase orders for products that we want to buy, to our suppliers, and managing their lifecycle to completion. There are of course ancillary stock administration related responsibilities as well that this sub-domain handles but not all of those software-ified…yet.
Historically, we had split the product engineering teams into two (the names of the teams should foreshadow the problems we will end up having):
**Stock Management 2** : responsible for generating automated replenishment proposals and maintaining pre-purchase settings, and
**Stock Management 1** : responsible for everything to do with purchase orders, but also over time responsibilities of maintaining EDI integration and store replenishment also fell on this team.
Both teams though had a separate backlog, they shared the same Product Owner and the responsibilities allocated to the teams grew…”organically”, that is to say, the allocation wasn’t always based on team’s expertise and responsibility area but mostly based on who had the bandwidth and space available in their backlog to build something. Purely efficiency focussed (_how do we parallelise to get most work done_), not effectiveness focussed (_how do we organise to increase autonomy and expertise, and deliver the best outcomes for the business_).
Because of this mindset, over time, Stock Management 2 also took on responsibilities that would have better fit Stock Management 1 e.g. they built a recommendation system on top of the purchase orders, something they had very little knowledge of. They ended up duplicating a lot of purchase order knowledge in this system – they had to – in order to create good recommendations. This also required replicating purchase order data in a different system which would later create data consistency problems.
As a result, dependencies grew in an unstructured and unwanted ways e.g. a lot of database sharing between the two teams, complex inter-service dependencies with multi-service hops required to resolve all the data needed for a given use case. The system architecture also grew “organically” with little to no alignment with the business processes it supported and the accidental complexity increased. Looking at the team names, no one could really tell what either teams were responsible for because what they were responsible for was neither well documented nor stable.
We ended up operating in this unstructured way until July 2023.
### [Trigger for Review](#trigger-review)
The trigger to review our team boundaries came in Q1 2023, when we nearly made the mistake of combining two teams into one single large team with joint scrum ceremonies with a proposal to add more process to manage this large team (LeSS). None of it had taken into account the business capabilities the teams supported or the desired state architecture we wanted. It was clear that no research had been done into how the industry is solving this problem, and it was being approached purely from a convenience of management pov.
Large teams, specially in a context that supports multiple business processes, is a bad idea in many ways (some of these are not unique to large teams):
- Large teams are expen$ive, you’d often need more seniors on a large team in order to keep the technical quality high and technical debt low
- No real ownership or expertise of anything and no clear boundaries
- Team members are treated as feature factories instead of problem solving partners
- Output is favoured over outcomes, business value delivered is equated to story points completed
- Cognitive load and coordination/communication overhead increases
- Meetings become less effective and people tend to tune out _(I tend to doodle geometric shapes, its fun !😉)_
- Product loses direction and vision, its all about cramming more features which fuels the need to make the team bigger. Because of course, more people will make you go faster…NOT!
- Often more process is required to “manage” large teams which kills team motivation and autonomy
This achieves the exact opposite of agility and we saw these degrading results when for a brief amount of time we experimented with the large team idea.
- Joint sessions were becoming difficult and inefficient to participate in (not everyone can or will join on time)
- Often team members walked away with completely different understanding and mental models which got put into code 😱.
- Often there was confusion about who was doing what which increased the coordination overhead
- Given historically the two teams had been separate with their own coding standards and PR standards, there often was friction in resolving these conflicts which slowed down delivery and reduced inter team trust.
[](https://codequirksnrants.files.wordpress.com/2023/12/image.png)
_Communication overhead grows as number of people in the group increases_
The worst part of all of this is learned helplessness! We become so desensitised to our conditions that we accept it the sub-optimal conditions as our new reality.
So combining teams and adding more process wasn’t going to be the solution here and it most certainly shouldn’t be applied without involving the people whose work lives are about to be impacted i.e. the engineering teams.
These reorganisations should also not be done devoid of any alignment with the business process because you risk system architecture either not being fit for purpose or too complex for the team(s) to handle because all sorts of assumptions have been put into the design.
### [Team Topologies and Domain Driven Design](#tt-ddd)
I had a feeling that we needed to take a different approach here and by this time I had been hearing a lot about [Team Topologies](https://teamtopologies.com/) so I bought the [book](https://www.amazon.com/Team-Topologies-Organizing-Business-Technology/dp/1942788819/ref=sr_1_1?crid=2UBW1RHA4KIFI&keywords=Team+Topologies&qid=1703427691&sprefix=team+topologie%2Caps%2C160&sr=8-1) (highly recommended), and read it cover to cover…twice…to understand the core ideas in it. A lot of people know about [Conway’s Law](https://martinfowler.com/bliki/ConwaysLaw.html) but Team Topologies really brings the double edged nature of Conway’s Law into focus. Ignore it at your own peril!
This Comic Agile piece sums up how that realisation after reading TT book, dawned on me:
[](https://codequirksnrants.files.wordpress.com/2023/12/pasted-image-20230928210406.png)
_Check out more hilarious strips [here](https://www.comicagile.net/)_
Traditionally, team and domain organisation in most companies, has been done by business far removed from the engineering teams, meaning they miss out a critical perspective in those discussions: _that of the system architecture_. And because the team design influences software design, many companies end up shooting their foot with unwieldy and misaligned software that delivers the opposite of agility. This is exactly why its crucial to have representation from engineering in these reorganisations. Just because something works doesn’t mean, it’s not broken!
By this time we had also conducted several [event storming](https://www.eventstorming.com/) sessions for the core Supply sub-domain (for the entire purchase ordering flow) to identify critical domain events, possible bounded contexts and what we want our future state to be. I cannot emphasise enough how important this kind of event storming can be in helping surface complexity, potential boundaries and improvement opportunities to the current state.
Putting Team Topologies and strategic DDD together to create deliberate team boundaries was just a no-brainer.
[](https://codequirksnrants.files.wordpress.com/2023/12/core-purchase-ordering-event-storm.png)
_Don’t worry, you are not meant to read the text, the identified boundaries are more important_
Also worth bearing in mind that this wasn’t a greenfield operation, we had existing software systems that had to be mapped onto some of the bounded contexts, at least until we can determine their ultimate fate. Some of the bounded contexts had to drawn around those existing systems to keep the complexity from leaking out to other contexts.
### [Brainstorming on New Team Design](#new-team-design)
In May 2023, I, our development lead and our domain manager got to brainstorming on how can we organise our teams not only for efficiency but this time crucially also **for effectiveness**.
In these discussions I presented the ideas of Team Topologies and insights from the event storms we had been doing. According to Team Topologies, team organisations can essentially be reduced to the [following 4 topologies](https://teamtopologies.com/key-concepts):
[](https://codequirksnrants.files.wordpress.com/2023/12/image-6.png)
_Four fundamental topologies_
Based on these and my formative understanding, I presented the following team design options:
[](https://codequirksnrants.files.wordpress.com/2023/12/image-7.png)
_The 2 team model_
This model makes the Purchase Ordering team (stream aligned) solely responsible for full purchase order lifecycle handling, including the replenishment proposals (which is an automated way to create purchase orders). The Pre Purchase Settings team (platform team) will provide supporting services to the PO team (e.g. supplier connectivity and price & availability services, purchase price administration services, various replenishment settings services etc).
Another model was this:
[](https://codequirksnrants.files.wordpress.com/2023/12/image-8.png)
_The 3 team model_
In the 3 team model, I split out the replenishment proposals part out of Purchase Ordering team, added the new actionable products capability that we were working on, to it and created another stream aligned team: Replenishment Optimisation Team. The platform team will now provide supporting services to both these stream aligned teams and the new optimisation team will essentially provide decision making insights to purchase ordering team.
In a perfect world, you want to assign one team per bounded context and as evident from the event storm we had several contexts, but Team Topologies also warns us to make sure the complexity of the work warrants a dedicated team. Otherwise, you risk losing people to low motivation, and still bearing the cost of creating multiple teams.
Nevertheless, after taking into account the practical constraints like money, complexity and team motivation but perhaps **most importantly** taking into account the impact of each design on the overall system architecture and what we wanted our desired state architecture to look like, we settled on the following cut:
[](https://codequirksnrants.files.wordpress.com/2023/12/image-9.png)
_Final team split_
Basically, at their core, the Purchase Order Decisions team will own all components that factor into purchasing decision making:
- Replenishment recommendation generation
- Purchase order creation and verification
- Actionable product insights
And the Purchase Order Management team will own all components that factor into the management of lifecycle of submitted purchase orders _(I know “management” is a bit of a weasel word, but I am hoping over time we will be able to find a better name)_:
- Purchase order submission
- Purchase order lifecycle management/adjustments (manual and system generated)
The central idea behind this split being that purchase order verification is a pivotal event in our event storm and once a purchase order is verified, it will always be submitted. Submission is a key pre-condition to managing pending purchase order lifecycle and it has sufficient complexity due to communication elements involved with suppliers and our own warehouse management system, so it makes sense for Purchase Order Management to own everything from submission onwards. This also makes them the sole owner of the purchase order database and this breaks the shared database anti-pattern, and relies on asynchronous event driven communication between the bounded contexts owned by the teams. Benefit of this is that we can establish clearer communication contracts and expectations without knowing or needing to know the internals of another context.
In addition to this, we also identified several supporting capabilities/bounded contexts for which the complexity just wasn’t high enough to warrant a separate team entirely, at least for now:
- Supplier price and availability retrieval
- EDI connection management
- Despatch advice forwarding
- E-mail based supplier communication
These capabilities still had to be allocated between these two teams, so based on whether they belong more to decision making part or the management part, we created the following allocations:
- Supplier price and availability retrieval _(Purchase Order Decisions because its only used whilst creating replenishment recommendations and subsequent purchase orders)_
- EDI connection management, Despatch advice forwarding _(Purchase Order Management because they already owned this and it definitely didn’t make sense as a part of decision making flows)_
- Email based supplier communication _(Purchase Order Management because purchase order submission can happen via EDI or via E-mail so it makes sense for them to own all aspects of submission)_
This brought the final design of teams to this:
[](https://codequirksnrants.files.wordpress.com/2024/02/image-2.png)
_Final team cut with bounded contexts owned by each_
It might seem a bit excessive to have multiple bounded contexts to a single team and like I said, in a perfect world I would have one team be responsible for only one bounded context. But considering the constraints I mentioned before (cognitive load, complexity of challenge and financial costs of setting up many teams), I think this is a pragmatic choice for now. The identified bounded contexts are also not set in stone, so its entirely possible we might combine some of them into a single bounded context based on conceptual and linguistic cohesion. We might even split them out into dedicated teams should some bounded contexts grow in complexity enough to warrant separate teams.
NB: A bounded context might not always mean a single deployment unit (i.e. a service or an application). A single BC can map to one or more related services if the rates of change, fault tolerance requirements and deployment frequencies dictate as much. The single most important thing about BCs is that they encapsulate a single distinct business concept with consistent business language and consistent meanings of terms, so its perfectly plausible that there are good drivers for splitting one BC into multiple deployment units.
[](https://codequirksnrants.files.wordpress.com/2024/02/image-1.png)
_Some heuristics for determining bounded contexts_
### [Go Live!](#go-live)
In June 2023 we presented this design to both the teams and asked for feedback, and both teams could see the value of the split because it created better ownership boundaries, better focus and allowed opportunity to reduce the cognitive overhead of communicating within a large team. So in July 2023, we put the new team organisation live and made all the administrative changes like changing the team names in the HR systems, Slack channels, assigning right teams to code repositories based on allocations etc. and got to work in the new set up.
### [Reflection](#reflection)
Whilst this team organisation is definitely the best we’ve ever had in terms of cleaner ownership boundaries, relatively appropriate allocation of cognitive load, better sense of purpose and autonomy, its by no means the best **we will ever have**. The most important thing about agility is continuous improvement, DDD tells us that there is no single best model, so it only makes sense that we revisit these designs regularly and seize any opportunities for improvement along any of those axes to keep aligned with the business and deliver value effectively. The organisation and the domain never stay the same, they grow in complexity so its crucial for engineering teams to evolve along with them in order to stay efficient and effective themselves, and also for the architecture to stay in alignment with the business. I loosely equate teams and organisations to living organisms that self-organise like cellular mitosis, its the natural order of things.
Ofcourse things are not perfect, both teams still have some degree of functional coupling i.e. if the model of the purchase order changes fundamentally or if we need to support new purchase order types, both teams will need to change their systems and coordinate to some extent. This is a trade-off of this team design option, but largely the teams are still autonomous and communicate asynchronously for the most part. Any propagation of model changes can still be limited by use of appropriate anti-corruption layers on either side.
One of the other significant benefits of this deliberate reorganisation, is that in both teams we created a north star roadmap for the desired state architecture because for a long time, both teams had incurred unwarranted technical complexities in the form of arbitrarily created services with mixed programming paradigms, which were getting difficult to maintain for a small team. Contract coupling at multiple service integration points made smallest of changes ripple out to multiple systems that had to be changed in a specific order to deploy safely (we’ve had outages in the past because we forgot to update the contracts consistently).
As a part of our new engineering roadmap, we are now reviewing these services with a strategic DDD eye and asking, “what business capability this service provides?” and if the answer is similar for two services and there are none of the benefits of [microservices](https://martinfowler.com/microservices/) to be gained here, then those two services will be combined into a single modular monolith. Some services will not make sense in the new organisation so they will be decommissioned and the communication pathways simplified. We project a potential reduction of 40% in the complexity of overall system landscape because of these changes (and hopefully some money savings as well), or at the very least complexity will be better contained. But perhaps most importantly, we aim to make the architectural complexity fit the cognitive bandwidth of the teams and ensuring a team can own the flow end to end.
Another thing we will be working on next is strengthening our boundaries with dependent teams, historically the e-commerce database has been shared with all the teams in Coolblue and this creates challenges (subject for another post). So going forward we will be improving our web services and events portfolio so dependents can use our service contracts to communicate with our systems instead of sharing databases. With a better sense of what we own and don’t own, I expect these interfaces to become crisper over time.
These kinds of reorganisations can have a long maturity cycle before it becomes clear whether these decisions were the right ones or the team boundaries were the right ones, and organising teams is just the first though a significant step. The key is in keeping the discussion going and being deliberate about our system design decisions to ensure that business domains and system design stay in alignment. To that end we will continue investing in Domain Driven Design practices to ensure business and engineering can collaborate effectively to create systems that better reflect the domain expectations whilst keep the complexity low and keeping acceptably high levels of fault tolerance and autonomy of value delivery. | explorer14 |
1,754,972 | #4 Pure NodeJs: return JSON (Part 4) | In this tutorial we will continue the Pure NodeJs Series by showing how to serve json data. programs... | 26,308 | 2024-02-07T21:30:33 | https://dev.to/basharosman/4-pure-nodejs-return-json-part-4-4fg3 | webdev, beginners, node, tutorial | In this tutorial we will continue the Pure NodeJs Series by showing how to serve json data.
programs and versions:
nodejs: v18.19.0
npm: v10.2.3
vscode: v1.85.2
should work on any nodejs > 14
we will use code similer to the code in the previews article [#2 Pure NodeJs: simple server (Part 2)](https://dev.to/basharosman/2-pure-nodejs-simple-server-part-2-32k3).
```javascript
const http = require('http');
const server = http.createServer((req, res) => {
res.writeHead(200, { 'Content-Type': 'text/html' });
res.end('<h1>Hello World!</h1>');
});
const PORT = 2121;
server.listen(PORT, 'localhost', () => {
console.log(`server run on port ${PORT}`);
});
```
this code will return html to the browser page if we want to return json/object data we can use mock data like this:
```javascript
const data = [
{
country: "United States",
city: "New York",
timezone: "America/New_York",
currency: "USD"
},
{
country: "United Kingdom",
city: "London",
timezone: "Europe/London",
currency: "GBP"
},
{
country: "France",
city: "Paris",
timezone: "Europe/Paris",
currency: "EUR"
},
{
country: "Japan",
city: "Tokyo",
timezone: "Asia/Tokyo",
currency: "JPY"
},
{
country: "Australia",
city: "Sydney",
timezone: "Australia/Sydney",
currency: "AUD"
}
]
```
to return this data we need to change the 'Content-Type'to be 'application/json' like this code.
```javascript
res.writeHead(200, { 'Content-Type': 'application/json' });
res.end(JSON.stringify(data));
```
Notice that we've utilized JSON.stringify to encapsulate the data. This step is crucial because our intention is to return the data as a string. Additionally, we include 'Content-Type': 'application/json' to specify that the response for the request will be in JSON format, not as a string document.
### the complete code:
```javascript
//server.js
const http = require('http');
const data = [
{
country: 'United States',
city: 'New York',
timezone: 'America/New_York',
currency: 'USD',
},
{
country: 'United Kingdom',
city: 'London',
timezone: 'Europe/London',
currency: 'GBP',
},
{
country: 'France',
city: 'Paris',
timezone: 'Europe/Paris',
currency: 'EUR',
},
{
country: 'Japan',
city: 'Tokyo',
timezone: 'Asia/Tokyo',
currency: 'JPY',
},
{
country: 'Australia',
city: 'Sydney',
timezone: 'Australia/Sydney',
currency: 'AUD',
},
];
const server = http.createServer((req, res) => {
res.writeHead(200, { 'Content-Type': 'application/json' });
res.end(JSON.stringify(data));
});
const PORT = 2121;
server.listen(PORT, 'localhost', () => {
console.log(`server run on port ${PORT}`);
});
```
To start the server and open the browser [localhost:2121](http://localhost:2121/).
```shell
node server.js
```
### Conclusion:
In this article we show you how to serve data as JSON format
note you can save the data in data.json file and serve the Json data from the file like we did in previews article [#3 Pure NodeJs: return html file (Part 3)](https://dev.to/basharosman/3-pure-nodejs-return-html-file-part-3-5dd2).
In the upcoming article I'll guide you through the process of serving different data types in different routes
| basharosman |
1,754,974 | I am a hot and sexy girl. looking for fun with real man.I do like dating meet me- http://tinyurl.com/zfyw58jm | A post by MissNatalia | 0 | 2024-02-07T21:34:26 | https://dev.to/missnatalia/i-am-a-hot-and-sexy-girl-looking-for-fun-with-real-mani-do-like-dating-meet-me-httptinyurlcomzfyw58jm-35ma |
 | missnatalia | |
1,754,999 | Smoothly Transitioning Into Maintenance Mode with Vite and React | Hi everyone! I successfully set up maintenance mode in a recent project with Vite and React. I'm... | 0 | 2024-02-07T23:27:44 | https://dev.to/jwald/smoothly-transitioning-into-maintenance-mode-with-vite-and-react-5fkk | vite, maintenance, react |
Hi everyone!
I successfully set up maintenance mode in a recent project with Vite and React. I'm eager to share my insights and experiences on this topic.
We'll begin with a basic approach and then explore an advanced technique in the next post.
Let's set an environment variable, like "UNDER_MAINTENANCE," to a positive value.
Next, we'll create a simple component to display when the application is undergoing Maintenance. Let's call this the "Maintenance" component. Here's a simple setup:
```jsx
//Maintenance.jsx
const Maintenance = () => {
return (
<div>
<h1>We are currently under Maintenance.</h1>
<p>Please check back soon.</p>
</div>
);
};
export default Maintenance;
```
This component is straightforward, but feel free to enhance it with your branding and any extra information you want to include.
After handling the component, let's implement it in our app.
The approach includes displaying the Maintenance component conditionally, depending on the value of the `process.env.UNDER_MAINTENANCE` environment variable. In the application's entry point, usually the `main.jsx`, we can incorporate a straightforward check to decide which component to show.
Here's a basic example:
```jsx
// main.jsx
import React from "react"
import ReactDOM from "react-dom/client"
import App from "./App"
import "./index.css"
import Maintenance from './Maintenance';
// Double-bang (!!) converts process.env.UNDER_MAINTENANCE to a boolean
const isUnderMaintenance = !!process.env.UNDER_MAINTENANCE;
ReactDOM.createRoot(document.getElementById("root")).render(
<React.StrictMode>
{isUnderMaintenance ? <Maintenance /> : <App />}
</React.StrictMode>
)
```
During the build process, Vite replaces `process.env.UNDER_MAINTENANCE` with its actual value. For instance, if the value is 'true', the output will be 'true', and the double-bang operator `!!` will convert it to a boolean, subsequently rendering the Maintenance component.
That's a very basic approach. In the next post, I'll show you how to build it with a custom plugin. | jwald |
1,755,018 | Will Artificial Intelligence Inherit My Software Dev Job? | During the summer of 2018, as is common in the military, I was assigned a new role that required... | 0 | 2024-02-08T01:36:18 | https://dev.to/simplytim42/will-artificial-intelligence-inherit-my-software-dev-job-2hn4 | disruption, ai, innovation, future | During the summer of 2018, as is common in the military, I was assigned a new role that required rapid skill development to be done by last Friday. As is not so common in the military, that skill was coding; and I was instantly hooked.
Work wasn't "work" anymore: it was adventure; it was exploration; it was discovery. I fondly remember the penny-drop moment when I wrote some code that looped and printed a statement ten-thousand times in an instant! The potential was exhilarating.
---
## The Advent of AI in Coding
There were two significant moments when I realised change was on the doorstep:
1. A demo in 2022 of an early version of Github Copilot. You typed what you wanted the code to do and then watched as it magically generated before your eyes. I remember thinking that we had automated away the fun part of coding. Ironically, I have grown to love Github Copilot and often use it as an autocomplete for my thought process :shushing_face: But it does still fall over with new features of languages/frameworks—AI is only as up-to-date as its training data.
2. The first time I held a technical conversation with ChatGPT and the weight of what that meant. It helped me understand a new concept I was grappling with. I was able to validate my comprehension (or lack thereof) by repeating the concept back in my own words and having ChatGPT confirm or correct my understanding.
## Contemplating the "Near" Future
This all leads to the question on my mind: _if Artificial Intelligence can be so good at technical creation in this early stage, will it eventually inherit my job of actually writing code?_
I don't actually know the answer to this. I'm not sure anyone does...yet. If the past has taught us anything it's that the future is hard to predict. But I think it's important to contemplate potential outcomes.
In the next few years, Artificial Intelligence could take on a role comparable to an aircraft's autopilot system: it'll do most of the heavy lifting but won't be trusted to do it unconditionally. Pilots in aircraft often do very little actual flying. They usually control take-off and landing. Then for the rest of the flight they monitor, make adjustments if required and—most importantly—are fully trained to take control in case of emergencies.
A day in my future dev-life might look like this:
1. Tell AI to generate feature X to solve problem Y
1. Look over generated code—and its related unit tests, of course—to verify it works as intended. If not, adjust and repeat step 1 :warning: _potential infinite loop for a stubborn mind_ :warning:
1. If all is well, merge code into codebase
1. If all is not well, oil programming hinges and put fingers to keyboard like I did in the good old days. Maybe ask ChatGPT to help...ahem
The human will have moved from a person who creates, to a person who guides: mastering the art of leveraging AI to generate vast quantities of code that integrates into the existing codebase. Teams could end up moving at a pace we can only dream of currently.
## More Than Just a Coder
However, it’s so easy to get caught up in what AI can do that I sometimes can’t see the forest for the trees. The best coders write very little code. Some of the most important skills a developer can have are uniquely human.
For a lot of companies, the developers have to engage with end-users, elicit their problems, empathise with their situations and discover creative, bespoke solutions to their needs. There are times when customers don’t fully know what they need, and it requires discernment to separate the wheat from the chaff.
Developers communicate complex technical concepts and their business value to non-technical stakeholders; this may serve as the critical determining factor for the allocation of funds.
Consider solutions and implementations that are the result of two humans chatting casually about what they’re doing—the old “watercooler effect”. These situations are founded on the coming together of two different beings, often with drastically different outlooks on life. My music-teacher wife often provides a perspective on a problem that I hadn’t even considered.
What about leadership? Mentoring junior developers and onboarding new members of a team are obvious examples of leadership. But the developer who consistently includes general refactorings into their workload understands the value of quiet leadership—the kind that might get overlooked. They do it anyway because technical debt can strangle a project.
The role of a developer is rooted in technical skills, but it's the soft skills that bolster a team and keep business goals and technology aligned. AI is currently great at the former, but not so much the latter.
## Ethical Considerations and Innovation
But what about further into the future? When AI can be creative intentionally, instead of [on the back of hallucinations](https://www.smartcompany.com.au/technology/artificial-intelligence/openai-ceo-sam-altman-ai-hallucinations/). When it can generate production-ready code consistently and communicate clearly to stakeholders. Could devs be out of a job?
[These game developers](https://finance.yahoo.com/news/game-being-made-ai-worried-134537455.html) are already pushing the limits of what AI can do. And my gut tells me that some companies will push it to the extreme. If there is a buck to be made someone will want to be the first to prove it. Let's look at some possible consequences if this happened across the industry.
Programming languages have "Core Devs": teams of people who maintain, update and improve the programming languages themselves. Their most important job is implementing security patches. They also fix bugs, improve usability etc. If AI inherits developer jobs, maybe it will inherit the job of a core dev too. Being responsible for the very code that it generates. Can AI be held responsible?
Maybe AI will do away with the need for programming languages and default to writing [machine code](https://en.wikipedia.org/wiki/Machine_code). Arguably, all languages are designed to be human-readable and add overhead as a result. If a human doesn't need to read it, then why bother? You'll get more efficient code.
_I hope this **never** happens—no matter the autonomy given to a system, we should always be able to verify what it's doing and why._
How will innovation fare? Innovation is usually driven by determined people who are convinced they know how and why something needs to change. They often face large amounts of push back until the world either accepts the inevitable or gets onboard with the idea. Could AI innovations be as impactful as the lightbulb, the telephone or the internet?
Maybe human innovation will flourish! There might be a world ahead of us where AI takes on so much of the mundane that humans are freed from the repetitive and empowered to innovate full-time. My job as a dev would be one of AI-empowered innovation.
The future is a mystery. Questions abound more than answers. This may always be the case. How AI will change my role as a software developer is up for debate. I hope the changes feel like improvements to those it affects.
Either way, I'm excited to see what happens. | simplytim42 |
1,755,319 | Summary of Major Changes Between Python Versions | Want to know what major changes happened in each Python3 version then you should read this article by... | 0 | 2024-02-08T07:59:11 | https://dev.to/tankala/summary-of-major-changes-between-python-versions-881 | webdev, python, programming, news | Want to know what major changes happened in each Python3 version then you should read [this article](https://www.nicholashairs.com/posts/major-changes-between-python-versions/) by Nicholas Hairs. | tankala |
1,755,326 | GoF-Momento Pattern | The Memento pattern provides a way to capture and externalise an object's internal state so that the... | 0 | 2024-02-08T08:21:17 | https://dev.to/binoy123/gof-momento-pattern-5b0j | gof, designpattern, systemdesign, tutorial |
The Memento pattern provides a way to capture and externalise an object's internal state so that the object can be restored to this state later without violating encapsulation.
## Structure:
**Originator:** Creates a memento containing a snapshot of its internal state and uses the memento to restore its state.
**Memento:** Stores the internal state of the originator object. It provides methods for retrieving the stored state but does not expose the state itself.
**Caretaker:** Holds the memento object but does not modify or interpret its contents. It is responsible for storing and restoring the state of the originator.
## Explanation:
The **Originator** is the object whose state needs to be saved and restored. It creates a memento containing a snapshot of its internal state and uses the memento to restore its state later.
The **Memento** stores the internal state of the originator. It provides methods for the originator to retrieve the stored state but does not expose the state itself, thus preserving encapsulation.
The **Caretaker** is responsible for storing and restoring the state of the originator. It holds the memento object but does not modify or interpret its contents. It acts as a wrapper around the memento, allowing the originator to save and restore its state.
## Example:
Consider a text editor application where the user can undo and redo changes to a document. We can use the Memento pattern to implement the undo and redo functionality:
```
// Originator
class TextEditor {
private var content: String
init(content: String) {
self.content = content
}
func getContent() -> String {
return content
}
func setContent(content: String) {
self.content = content
}
func save() -> Memento {
return TextMemento(content: content)
}
func restore(memento: Memento) {
if let textMemento = memento as? TextMemento {
content = textMemento.getContent()
}
}
}
// Memento
protocol Memento {}
class TextMemento: Memento {
private let content: String
init(content: String) {
self.content = content
}
func getContent() -> String {
return content
}
}
// Caretaker
class History {
private var states = [Memento]()
func saveState(memento: Memento) {
states.append(memento)
}
func restoreState(index: Int) -> Memento? {
guard index >= 0 && index < states.count else {
return nil
}
return states[index]
}
}
// Example usage
let textEditor = TextEditor(content: "Initial content")
let history = History()
// Save initial state
history.saveState(memento: textEditor.save())
// Make changes
textEditor.setContent(content: "Modified content")
// Save state after modification
history.saveState(memento: textEditor.save())
// Restore to initial state
if let initialState = history.restoreState(index: 0) {
textEditor.restore(memento: initialState)
}
print(textEditor.getContent()) // Output: Initial content
```
In this example:
The **TextEditor** class is the originator, which holds the content of the text document.
The **TextMemento** class is the memento, which stores the content of the text document at a specific point in time.
The **History** class is the caretaker, which maintains a history of mementos and allows the text editor to save and restore its state.
We demonstrate saving the initial state, making changes, saving the modified state, and then restoring to the initial state using the mementos stored in the history.
## Usage
The Memento pattern is commonly used in various software systems where the ability to save and restore an object's state is required.
Here are some common usage examples:
**Undo/Redo Functionality:** Text editors, graphic design software, and other applications often implement undo and redo functionality using the Memento pattern. Each action performed by the user (e.g., typing text, moving objects) creates a memento capturing the state before the action. Users can then undo or redo actions by restoring the state from the corresponding memento.
**Version Control Systems:** Version control systems like Git or SVN use the Memento pattern to store and manage different versions of files or code repositories. Each commit represents a snapshot of the repository's state, allowing users to revert to previous versions if needed.
**Transactional Systems:** In transactional systems, such as banking or e-commerce applications, the Memento pattern can be used to implement rollback functionality. Before executing a transaction (e.g., transferring funds, placing an order), the system creates a memento representing the current state. If the transaction fails or needs to be rolled back, the system restores the state from the memento.
**Game State Management:** Video games often use the Memento pattern to manage game state and allow players to save and load their progress. Each save file contains a memento representing the player's position, inventory, and other relevant game state information.
**Configuration Management:** Configuration management tools, such as Ansible or Puppet, can use the Memento pattern to capture and restore configurations for servers or virtual machines. Administrators can save snapshots of the system's configuration and apply them later to restore the system to a known state.
**Session Management:** Web applications can use the Memento pattern to manage user sessions and maintain state between requests. Session data, such as user preferences or shopping cart contents, can be stored in mementos and restored when the user revisits the site.
**Text Editor and IDE State:** Text editors and integrated development environments (IDEs) often use the Memento pattern to implement features like session recovery. In the event of a crash or unexpected shutdown, the editor can restore the user's work from a previously saved state.
Overall, the Memento pattern is valuable in scenarios where objects need to be able to save and restore their state, providing users with flexibility, reliability, and control over their interactions with the system.
[Overview of GoF Design Patterns](https://dev.to/binoy123/demystifying-gof-design-patterns-essential-techniques-for-crafting-maintainable-and-scalable-software-solutions-1dfi) | binoy123 |
1,755,360 | Angular 14: Exciting Features to Look Out for as an AngularJS Developer | Introduction As an AngularJS developer, you're no stranger to the constant updates and... | 0 | 2024-02-08T09:22:49 | https://dev.to/dhwanil/angular-14-exciting-features-to-look-out-for-as-an-angularjs-developer-aai |
Introduction
As an [AngularJS developer](https://www.itpathsolutions.com/hire-angular-js-developers/), you're no stranger to the constant updates and improvements that come with each new version of the framework. It's this commitment to evolution that makes AngularJS such an exciting platform to work with. With the pending release of Angular 14, there are a number of thrilling features and enhancements to anticipate, each promising to further streamline the development process.
Enhanced Build Times and Debugging
Anticipation is high that Angular 14 will offer significant advancements in build times and debugging capabilities. The enhancement of build times, achieved through faster compilation and reduction of build times, will prove to be advantageous for every [AngularJS developer](https://www.itpathsolutions.com/hire-angular-js-developers/). Such advancements can expedite the overall development process, pave the way for faster deployments, and foster a more efficient workflow. Likewise, the expected improvements in debugging mechanisms can provide a smoother development journey by making error detection and rectification easier and quicker. This double enhancement of speed and ease in the development process indicates that Angular 14 will continue to prioritize developer efficiency and productivity.
Ivy Everywhere
The highly anticipated Angular 14 is poised to adopt Ivy, Angular's revolutionary compilation and rendering pipeline, as the standard for all applications. First introduced in Angular 9, Ivy has been a transformative addition, offering reduced bundle sizes, quicker testing times, and more effective debugging. Now, as Angular 14 looms on the horizon, AngularJS developers can expect even more from Ivy. Promising an increase in performance and further reductions in build sizes, Ivy is set to take center stage in the upcoming Angular release, offering numerous advantages to developers. With this transition, Angular continues its trend of innovation and efficiency, providing developers with tools that streamline the development process.
Strict Mode by Default
In a move that signifies Angular's commitment to clean, reliable coding, Angular 14 is speculated to enable strict mode as a default setting. At first glance, this might seem intimidating to some developers. However, the benefit of this feature quickly becomes apparent when you consider its ability to identify errors during the development phase itself. Enabling strict mode by default serves as a proactive measure to reduce future debugging needs by ensuring errors are addressed in real-time during coding. While this might require some adjustments for developers not used to working in strict mode, the trade-off is a higher quality of code, resulting in more stable and reliable applications. Essentially, Angular 14's potential move towards enabling strict mode by default is an indication of its continued efforts to improve coding best practices and ultimately, the quality of the end product.
Better Developer Ergonomics
1. Intuitive CLI Prompts: Angular CLI is a powerful tool for scaffolding and managing Angular projects, and Angular 14 may introduce more intuitive CLI prompts. These prompts could provide clearer guidance and options, making it easier for developers to initialize projects, generate components, and perform other common tasks without needing to consult documentation extensively.
2. Upgraded Error Messages: Error messages play a crucial role in the development process, aiding developers in identifying and fixing issues in their code. In Angular 14, we can anticipate improved error messages that are more informative, precise, and actionable. Instead of cryptic error codes, developers might receive clearer explanations along with suggestions for resolving the issue, thereby reducing debugging time and frustration.
3. Enhanced Tooling Integration: Angular developers often work with a variety of tools and editors, and Angular 14 could focus on improving integration with popular development environments. This might include better support for IDEs like Visual Studio Code, with features such as enhanced code completion, real-time error highlighting, and integrated debugging tools, all aimed at improving productivity and reducing context switching.
4. Streamlined Development Workflows: Angular 14 may introduce enhancements to streamline common development workflows, such as project setup, testing, and deployment. This could involve optimizations in build times, improvements in live-reload functionality, or integration with continuous integration and deployment (CI/CD) pipelines, allowing developers to focus more on writing code and less on managing infrastructure.
5. Accessibility Improvements: Accessibility is a crucial aspect of web development, and Angular 14 could prioritize making the framework more accessible for developers of all backgrounds. This might involve providing better documentation and resources for beginners, as well as improving support for screen readers and keyboard navigation in Angular applications.
Enhanced Mobile Performance
1. Optimized Lazy Loading: Lazy loading is a technique used to defer the loading of non-essential resources until they are needed, which can greatly improve initial loading times, particularly on mobile devices with slower network connections. In Angular 14, we can expect further optimizations to lazy loading mechanisms, allowing applications to load and render critical content more quickly, thus enhancing the user experience on mobile devices.
2. Faster Rendering Times: Rendering performance is crucial for delivering a smooth and responsive user experience, especially on mobile devices with limited processing power. Angular 14 may introduce optimizations aimed at reducing rendering times, ensuring that applications feel snappy and responsive even on low-end mobile devices. These optimizations could include improvements to change detection algorithms, template rendering efficiency, and component initialization times.
3. Animation Performance Enhancements: Animations play a significant role in enhancing the user experience on mobile devices, adding visual flair and interactivity to applications. In Angular 14, we might see upgrades to animation performance, enabling smoother and more fluid animations on mobile devices. These enhancements could involve optimizations to the underlying animation engine, improvements in CSS animation performance, and better utilization of hardware acceleration.
4. Mobile-first Design Patterns: Angular 14 may also promote mobile-first design patterns, encouraging developers to prioritize the mobile user experience when building applications. This could involve providing tools and guidelines for designing responsive layouts, optimizing touch interactions, and ensuring compatibility with various screen sizes and orientations. By embracing mobile-first principles, Angular 14 aims to deliver applications that are not just functional, but also intuitive and delightful to use on mobile devices.
5. Progressive Web App (PWA) Support: As Progressive Web Apps (PWAs) continue to gain traction, Angular 14 may introduce enhancements to support PWA development, enabling developers to build web applications that offer native-like experiences on mobile devices. This could include features such as service worker support, offline capabilities, and app manifest generation, empowering developers to create fast, reliable, and engaging experiences for mobile users.
Possible Updates to Angular Material
Angular Material, known for its rich library of UI components, could see a variety of enhancements in the forthcoming Angular 14 release. There is a possibility of new components being introduced, providing even more tools for developers to utilize in creating user interfaces. The enhancements aren't just limited to new additions. Existing components may undergo revisions to improve their functionality and performance, further augmenting the existing library. Moreover, developers may find additional customization options at their disposal. This would provide increased flexibility and control over UI design, allowing developers to further tailor their interfaces to specific project needs. These potential updates underscore Angular's commitment to offering a comprehensive, robust toolkit for developers, facilitating superior UI design and user experience.
Simplified Testing
When it comes to application development, testing plays a pivotal role in ensuring the functionality and reliability of the final product. As Angular consistently strives to streamline the development process, Angular 14 is projected to simplify testing procedures further. The new version might offer enhanced integration with various testing libraries, augmenting the ease of conducting comprehensive tests. In addition, the test runners could see improvements, making it easier to execute tests and observe results. Notably, the debugging capabilities for tests may also be enhanced. This feature would be of significant benefit in identifying and rectifying errors during the testing phase itself. These anticipated updates aim to refine and optimize the testing process, enabling developers to produce reliable, high-quality applications. The focus on simplified testing further reflects Angular's commitment to improving all aspects of the development cycle, from coding to testing.
Improved Accessibility
In the arena of accessibility, Angular 14 might introduce a host of advancements to create more inclusive applications. We might witness robust support for Accessible Rich Internet Applications (ARIA) attributes, which would contribute towards making applications more accessible to individuals with disabilities. With better ARIA support, developers can make the UI more understandable for assistive technologies, thereby creating a more user-friendly experience for everyone.
Next on the list is improved keyboard navigation. This feature is fundamental to accessibility as it allows users who cannot use a mouse or a touch screen to navigate the application. This can make a significant difference in the user experience, ensuring that Angular-built applications cater to a wider audience.
Another crucial area where we might see enhancements is screen reader support. Screen readers are vital tools for visually impaired users, converting text into speech or braille. By enhancing screen reader support, Angular 14 could make applications more user-friendly for visually impaired individuals, showing Angular’s commitment to creating applications that everyone can use.
Conclusion
In conclusion, Angular 14 is shaping up to be a significant update that offers an array of exciting improvements and enhancements. From faster build times and enhanced debugging, to better mobile performance and simplified testing procedures, each update promises to make the life of an AngularJS developer easier and more efficient. The focus on improved accessibility and universal design principles show Angular's commitment to inclusive and user-friendly application development. It's clear that Angular 14 isn't just about making developers' lives easier, but also about enhancing the end-user experience. This dual focus sets Angular apart and ensures its ongoing popularity in the developer community. As an AngularJS developer, keeping an eye on these potential updates is not only exciting but also vital to stay ahead in the ever-evolving tech landscape. With such promising features on the horizon, the future of Angular development looks brighter than ever.
| dhwanil |
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