teleren/devto huggingface dataset:
Every React.js beginner should know these!
Tags: react, beginners, javascript, frontend
Published: 2023-09-15 17:44:49

React.js is a powerful JavaScript library for building user interfaces. If you're new to React, here are nine essential things you should know:

**1. Understanding Components:**
React revolves around components. Components are reusable building blocks for your UI. They can be simple, like buttons, or complex, like an entire form.

**2. JSX (JavaScript XML):**
JSX is a syntax extension for JavaScript used in React. It allows you to write HTML-like code in your JavaScript, making it easier to define UI elements.

**3. Component Lifecycle:**
React components go through a lifecycle, from initialization to rendering and updates. Understanding this lifecycle helps you manage component behavior effectively.

**4. State and Props:**
State represents the internal data of a component, while props are properties passed from parent to child components. Understanding when to use state and props is fundamental to React development.

**5. Virtual DOM:**
React uses a virtual DOM to optimize rendering performance. It calculates the most efficient way to update the real DOM, reducing unnecessary re-renders.

**6. Unidirectional Data Flow:**
React follows a unidirectional data flow, meaning data flows from parent components down to child components. This makes it easier to predict how changes affect your application.

**7. Conditional Rendering:**
React provides various ways to conditionally render components and content based on different states or data. Use conditional rendering to create dynamic UIs.

**8. Event Handling:**
React handles events similarly to HTML, but with some differences. Make sure to use camelCase event names like onClick and pass a function as the event handler.

**9. React Developer Tools:**
Install the React Developer Tools browser extension. It allows you to inspect and debug React components and their props and state in the browser.

**Bonus Tip:** Learn a State Management Library (Optional):
As your React projects grow in complexity, consider using state management libraries like Redux or Mobx to efficiently manage and share state across your application.

React is a fantastic library for building modern, interactive web applications. Start with the basics and gradually explore more advanced concepts as you become more comfortable with React development. Happy coding! 🚀👩‍💻👨‍💻
Postgres.app or Native PostgreSQL Server Installer: Which Is the Best Installer for macOS?
Published: 2023-09-15 17:42:23

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/b54vysgq0efpmttpko83.png)

PostgreSQL is steadily gaining recognition in the field of database management thanks to its comprehensive feature set, reliability, and impressive performance. This free and open-source database system excels in supporting both relational and non-relational querying, offering the flexibility to define custom data types, operators, and functions to tailor the database to specific requirements.

As PostgreSQL's popularity continues its ascent, a variety of alternative methods for installing a PostgreSQL server on different operating systems have emerged. For example, on macOS, you have multiple options like Postgres.app, Homebrew, MacPorts, or Fink for your installation needs.

In this article, our objective is to provide clear guidance on installing a native PostgreSQL server and explore alternative PostgreSQL server installers tailored for macOS, including Postgres.app. Furthermore, we will conduct a comprehensive analysis of the strengths and weaknesses of each installer to empower you to make an informed decision about the one that aligns best with your requirements.

Learn more: https://blog.devart.com/postgres-app-vs-native-postgresql-which-is-the-best-for-macos.html
The future of Frontend Development in the age of AI
Published: 2023-09-15 17:28:27

Historically, people used to build websites by writing custom code in **HTML**, **CSS** and **Javascript**. So, the UI of famous websites like _Twitter_, _Youtube_ or _Yahoo_ were dead simple. Believe me, they were at their best at their time. 

But things evolved with time, and there came time of frameworks such as **Bootstrap** and **TailwindCSS**, which tools saved significant time in development with advanced design techniques. For example, _Flexbox_ and _Grid_ are relatively new topics in **CSS**, which were introduced later. 

Things didn't stop there as more complex websites needed Dynamic interfaces and building with these frameworks. Advanced frontend frameworks like **React**, **Angular** and **Vue** came along and completely changed the development with components based design. These types of frameworks updated with a advanced State Management, such as like in _Facebook_ updates dynamically after clicking. Things became more handy with more and more frameworks and tools such as _NextJS_, and various UI frameworks.

Enter the AI era, where [OpenAI](openai.com) developed [Codex](https://openai.com/blog/openai-codex/), a tool to help developers write code faster. About half of code in Github is written by applying such tools. Then comes [ChatGPT](chat.openai.com), which made it accessible for general public to use advanced AI tools to write simple code. Now, non-programmers can build a simple website or even a web app with the help of ChatGPT by using Prompt Engineering techniques. 

Enabling the use of AI, tools like [10web](10web.io) and [typedream](typedream.com) let you make websites under a minute. These are mostly static sites and common web apps like blog or job board. Many other no code & design based tools are available in Market today to foster the dev time. However, one tool that caught my attention is [v0](v0.dev) by Vercel, which was showcased to public yesterday. The tool is in Private alpha, but it seems to bring a revolution in Frontend Development as it designs everything with a prompt(such as design a home page for personal portfolio). We can iterate the process until it gives the required design for us, so that we can copy and paste to our code.

So, with the advancement of AI, I am sure there are more tools coming in the coming years. I even believe, no code/low code web development is going to be most common method by 2025, even for the very complex web applications.

This brings up to the question, Is it worth learning to code(especially **Frontend** in 2023)? 

Please share your thoughts in the comments.
¿Qué es la programación estructurada?
Published: 2023-09-15 17:25:29

# Programación Estructurada: Fundamentos y Beneficios

La programación es un arte que implica transformar ideas en código funcional. Una de las metodologías más influyentes en este proceso es la **programación estructurada**, que se ha convertido en un pilar fundamental en el mundo de la informática. En esta publicación, exploraremos los fundamentos y beneficios de la programación estructurada.

## ¿Qué es la Programación Estructurada?

La programación estructurada es un paradigma de programación que se basa en la idea de dividir un programa en pequeñas unidades lógicas llamadas estructuras de control. Estas estructuras incluyen secuencias, bucles y selecciones. A través de la programación estructurada, se busca crear un código claro, fácil de entender y mantener.

## Principios de la Programación Estructurada:

1. **Secuencia:** Los programas se ejecutan en un orden específico, de arriba a abajo. Esto asegura que las instrucciones se ejecuten en el momento adecuado y en la secuencia correcta.

2. **Bucles:** Se utilizan bucles para repetir acciones hasta que se cumpla una condición. Esto ahorra tiempo y evita la repetición de código.

3. **Selecciones:** Las estructuras de selección permiten que el programa tome decisiones basadas en condiciones específicas. Esto es esencial para la lógica y la toma de decisiones en el código.

## Beneficios de la Programación Estructurada:

- **Legibilidad:** El código estructurado es más legible para los desarrolladores, lo que facilita la comprensión y el mantenimiento.

- **Mantenibilidad:** Debido a su organización lógica, los cambios y las actualizaciones son más sencillos de implementar sin afectar otras partes del programa.

- **Depuración:** Identificar y corregir errores es más fácil en el código estructurado, ya que las estructuras lógicas simplifican la búsqueda de problemas.

- **Eficiencia:** La programación estructurada puede resultar en programas más eficientes en términos de consumo de recursos y velocidad de ejecución.

## Conclusión:

La programación estructurada es una metodología esencial para cualquier programador, incluidos aquellos que se dedican a la ciencia de datos, como nuestros alumnos que estudian negocios y finanzas. Al adoptar los principios de la programación estructurada, se pueden crear aplicaciones más sólidas y fáciles de mantener, lo que es crucial en un entorno empresarial cada vez más dependiente de la tecnología.

En resumen, la programación estructurada es un enfoque valioso que mejora la calidad y la eficiencia del código, algo que todos los desarrolladores, incluidos los que trabajan en el campo de la ciencia de datos, deben considerar en su proceso de aprendizaje y desarrollo profesional.
Gafas de sol de bambú
Published: 2023-09-15 17:23:17

Gafas de sol de madera de bambú artesanales, hechas a mano con materiales naturales y 100 % libres de plásticos. Gafas ecofriendly polarizadas muy cómodas y extremadamente ligeras, un proyecto de moda sostenible de Livegens: https://www.livegens.com/tienda/gafas-madera/
AiToolsKit.ai : AI, Seo, Dev, & Social media Tools
Tags: ai, socialmedia, seo, writing
Published: 2023-09-15 17:12:12

**[AI Tools Kit](https://aitoolskit.ai)**, (Productive AI, Seo, Writing & Social media Tools all-in-one platform) which provides tools for FREE such as AI Art Generator, Prompt Engineering Tool, Keyword Research (Alternative of Ahrefs/Semrush), Backlink Analysis, Trending Internet Questions Explorer, AI Undetectable Rewriter, Image Background Remover, Image Optimizer, Instagram Hashtags Generator (with research report), Image Quality Enchancer, Trending Youtube tags, Keyword Research, URL Shortener, Backlink Maker, QR Code Generator, Keywords Provider for Particular Search Engine, Website's SEO Report Generator, Free Plagiarism Checker, Speech to Text Converter, Image Texts Extractor, Backlinks Maker for Youtube Video, AI Based Content and 50+ MORE.
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nre0w78wcjuykf3l5h6y.jpg)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/w0tedpglxn8vl93ksqpg.png)
Корисні JavaScript методи які помістяться в один рядок
Tags: javascript, webdev, programming, tutorial
Published: 2023-09-15 17:05:02

## 1. Вибір випадкового елементу з масиву

```js
// Input: [1, 2, 3, 4]
const randomElement = arr => arr[Math.floor(Math.random() * arr.length)];
// Output: Something like 2, or 4, or 1... you get it.
```

## 2. Позбавлення від повторюваних елементів масиву

```js
// Input: [1, 2, 2, 3]
const uniqueArray = [...new Set([1, 2, 2, 3])];
// Output: [1, 2, 3]
```

## 3. Сортування об'єктів масиву за певною властивістю

```js
// Input: 'name', [{name:'Bob', age:25}, {name:'Alice', age:22}]
const sortBy = (arr, key) => arr.sort((a, b) => a[key] > b[key] || -1);
// Output: [{name:'Alice', age:22}, {name:'Bob', age:25}]
```

## 4. Перевірка рівності двох масивів або об'єктів

```js
// Input: [1, 2], [1, 2]
const arraysEqual = JSON.stringify([1, 2]) === JSON.stringify([1, 2]);
// Output: true
```

## 5. Зробити так, щоб код чекав певний час

```js
const chill = ms => new Promise(resolve => setTimeout(resolve, ms));

(async () => {
  console.log("Before waiting");
  await chill(2000);
  console.log("After waiting for 2 seconds");
})();
```

## 6. Витяг властивості з масиву об'єктів

```js
const pluck = (arr, key) => arr.map(obj => obj[key]);
console.log(pluck([{x: 1}, {x: 2}], 'x')); // Output: [1, 2]
```

## 7. Вставка елемента в певну позицію

```js
// Input: [1, 2, 4]
const insert = (arr, index, newItem, a=[...arr]) => (a.splice(index, 0, newItem), a);
// Output: [1, 2, 3, 4]
```

## 8. Згенерувати випадковий HEX код кольору

```js
// Input: No input needed
const randomColor = "#" + (~~(Math.random() * 8**8)).toString(16).padStart(6, 0);
// Output: Something like #f5a623
```
My Cool Adventures with Open Source!
Tags: opensource, beginners, programming
Published: 2023-09-15 16:37:13

Apart from first time contributing to open source projects, I've discovered the value in being an active user and tester of others' open source applications. I tested, read, reviewed my partner's [go-go-web](https://github.com/kliu57/go-go-web) project.

After forking the repo on my Github and my Mac, I tried to do a detailed review. My partner did a good job. Firstly, the helping information is detailed and format perfectly. Secondly, in her code, she includes detailed comments that makes it much easier to read and understand for me. In general, her program run successfully, and the results are mostly accurate. I only find some [small points](https://github.com/kliu57/go-go-web/issues) for her improving.

My partner played a crucial role in the development of my project by stepping into the role of a dedicated tester. Her keen eye for detail and fresh perspective brought a new dimension to my work. She uncovered a myriad of [issues](https://github.com/WangGithub0/ConvertTxtToHtml/issues?q=is%3Aissue+is%3Aclosed) that had previously escaped my notice. It expanded my horizons as a developer. 

It is my first time to take part in open source, my partner and I Work together, we addressed each challenge, learning and growing throughout the process. Her commitment to testing and problem-solving truly made my project stronger and more resilient.
GitHub developer pack
Tags: github, webdev, beginners, programming
Published: 2023-09-15 16:53:25


🚀 Exciting News for Student Developers! 🎓

Are you a budding developer looking to supercharge your skills and propel your career forward? Look no further! GitHub's Student Developer Pack is here to turbocharge your learning journey.

🌟 **Frontend Master Course - Absolutely Free!**
As part of this incredible pack, you gain access to Frontend Masters, the premier platform for mastering web development. Dive deep into the world of front-end engineering, learn from industry experts, and hone your skills in HTML, CSS, JavaScript, and more. It's a priceless opportunity to build a strong foundation in web development.

💼 **Boost Your Portfolio**
But that's not all! The Student Developer Pack offers a treasure trove of goodies. You'll get free access to a suite of tools and services that will help you shine in the developer world. From hosting your projects on GitHub Pages to crafting stunning portfolios with Canva, these resources will give your resume a significant boost.

👩‍💻 **Cloud Credits and Developer Tools**
As a student developer, you'll receive generous credits for cloud services like AWS, Azure, and DigitalOcean. Plus, you'll unlock access to essential developer tools, including JetBrains IDEs and Postman Pro. These resources will empower you to build, deploy, and test your projects with ease.

🌐 **Domain Names and Learning Platforms**
Need a cool domain name for your personal website? The pack's got you covered! You'll get free domain names through Namecheap, making your online presence truly professional. And for those eager to expand their knowledge, there are free courses on platforms like DataCamp and Educative.io.

📦 **So Much More!**
This pack is loaded with benefits, including free GitHub Pro access, exclusive discounts on tech gear, and even free access to the GitHub Campus Program. It's your gateway to a world of learning, networking, and career growth.

🚀 Don't miss out on this golden opportunity to turbocharge your developer journey. Grab your GitHub Student Developer Pack today and unlock a world of possibilities!

🔗 [Get Your Student Developer Pack](https://education.github.com/pack)

Let's code, learn, and grow together! 🌟 
written by- GPT-3.5
Hash! A magical datastructure
Tags: beginners, datastructures, java, hash
Published: 2023-09-15 16:34:39

 
Hashing is a process of converting data into a fixed-length string of characters, which is typically a hexadecimal or binary representation. This fixed-length string is commonly known as a "hash value" or "hash code."

## Components of hash


It consists of key components,

**Key**: It refers to the text that we want to hash.

**Hash function**: A hash function (H(x)) is a mathematical algorithm that takes the key as input and produces a fixed-length hash value as output

> H(x)= x mod 7

where x is the key that we want to hash.
In this example , hash function we have taken 7 because we limit the hashtable size to 7. We can also modify the value as per our needs.

**Hash Table**: A Hash table is a data structure that maps keys to values using a hash function. Hash stores the data in an array where each data value has its unique index.

## Why do we need hash?

In programming to insert, search, and delete data we have data structures like,

**Array**

In the array, the time complexity for insertion ,deletion and search takes O(n). But if we can reduce the time to O(log n) by search an element in a sorted order by binary search but then insertion and deletion becomes costly. 

**Linked Lists**

This also takes linear time complexity.

**Binary Search Tree**

This takes logarithmic time in insertion ,deletion ,and search.

**Hash**

This takes constant time for every operations.
So this will increase the efficiency of the program and retrieve information in no time.

## Collision

Collision is a situation in which where two keys having same hash values.
For example,

> H(x)= x mod 7

 `H(13)= 13 mod 7 => 6
  H(20)= 20 mod 7 => 6`

So the program don't know where to store the second hash value.
This will lead to collision. 

## Collision Handling Techniques


Handling hash collisions is essential in hash tables, where each key needs to be mapped to a unique location  within the table. Several techniques are commonly used to address hash collisions.

**Chaining**

 This make each cell of the hash table point to a linked list of records that have the same hash function value. Chaining requires additional memory outside the table.

For example,

We have some elements like 14,21,49,50. Our hash function is 

> H(x) = x mod 7

 `H(14) = 14 mod 7 => 0
  H(21) = 21 mod 7 => 0
  H(49) = 49 mod 7 => 0`


In 0th position of the hash table the values are stored like,

```
14 -> 21 -> 49
```

 From this we clearly see that there is a collision that three key have the same hash value so the value can be stored using linked lists to store the series of values having same hash value.

**Open Addressing**

All elements are stored in the hash table itself. Each table entry contains either a record or NIL. 
This is of three types,

- Linear probing

- Quadratic probing

- Double probing


For example,

We have the same elements 14,21,49,50. Our hash function is 

> H(x) = x mod 7

 `H(14) = 14 mod 7 => 0
  H(21) = 21 mod 7 => 0`

Here the value of 14 is stored in 0th position and 21 can be stored in 1th position.
📚 Unlocking Success on LinkedIn: Introducing "The School of LinkedIn" eBook!
Tags: productivity, linkedin, development, webdev
Published: 2023-09-15 16:11:52

I just got this and feel I should share it here. The following are words from the author.

[**Timothy Iloba**](https://www.linkedin.com/in/timothy-iloba-93332318a?miniProfileUrn=urn%3Ali%3Afs_miniProfile%3AACoAACyKv3cBHYOFqKkjMnzSQOpNtZH1rVywIxk&lipi=urn%3Ali%3Apage%3Ad_flagship3_profile_view_base%3BL%2BPakiJPRtyUtVq6pZ1WpA%3D%3D): LinkedIn isn't just winning; it's dominating the professional networking game with over 930 million professionals worldwide. Being on LinkedIn is no longer a choice; it's a necessity if you're serious about accessing a world of opportunities in business, careers, marketing, relationships, and more.

You might think you have a cool, well-optimized profile, but there's so much more to discover. That's where "The School of LinkedIn" eBook comes in.

In this eBook, I'll guide you from the basics to becoming a LinkedIn pro, covering:

✨ Optimizing your profile
✨ Creating quality content and attracting opportunities
✨ Leveraging others to grow your account
✨ Expanding your audience
✨ Finding jobs on LinkedIn
✨ How recruiters search for talent
✨ Sending effective cold messages, and much more.

Remember, "To write a great book, you must first become the book." This eBook is packed with practical steps that I personally used to skyrocket my account from 0 to 6k+ followers in under 6 months, land multiple gigs, and unlock incredible opportunities on LinkedIn.

Don't miss out on these proven strategies. Grab your FREE copy of "The School of LinkedIn" eBook by clicking the link below:
👉 [Download Now](https://lnkd.in/dDUgq-CQ)

Level up your LinkedIn game and start winning today! 🚀 #LinkedInSuccess #CareerGrowth #Networking
How to send Infinite SMS Messages
Tags: beginners, tutorial, devops
Published: 2023-09-15 16:11:08

Sometimes, hackers take pleasure in scaring or making fun of people by saying that their account has been compromised. They do this by sending people an endless stream of spam SMS messages, making it appear that their account has been compromised.

These spammers either want to scare people or secretly put malicious software on their victims’ phones and other electronic devices. Depending on the specific objectives of the hacker, the basic goal of spam is to make money and gain unauthorized access to the accounts that have been chosen as targets. Spammers come in many forms, including those that spam websites, SMS messages, and emails. In this guide, we’ll show you how mobile spammers work.
[Source](https://hackreveal.com/how-to-send-infinite-sms-messages/)

## Using the SPAMSMS Tool, send spam SMS

NOTE: This tool's only work for Indonesia number phone.
1. The prerequisites must be installed first. Please enter the following commands:

apt update && pkg upgrade

apt install python

apt install git

2. In the second step, type the following command to get the SpamSms tool from GitHub:

git clone https://github.com/KANG-NEWBIE/SpamSms
pip install requests mechanize bs4
cd SpamSms
python main.py
3. After executing the tool, you can now select the service provider whose name appears with the tool. Option 2 will be used for this tutorial. You can use any of the following options:

4. In the next step, enter the phone number of the person to whom you want to send spam messages (Note: Make sure to enter the mobile number with the country code, such as +91 in India, +1 in the United States, and so on):

5. In the next step, enter the number of spam messages you intend to send, as shown below.
After successfully completing steps, the SMS system will automatically begin sending messages.


That’s all there is to it, guys. This is how hackers can distribute spam to their targets. This is only one example. There are numerous tools available on the internet. I just showed this free educational tool. Take care when using such spam tools on the internet.

Also Read:

[12 Best WiFi Hacking Tools for Secure Network Exploration
](https://hackreveal.com/12-best-wifi-hacking-tools-for-secure-network-exploration/)
[[The Ultimate Guide to Wifi Hacking: Tools and Techniques
](https://hackreveal.com/the-ultimate-guide-to-wifi-hacking-tools-and-techniques/)
[10 Best Vulnerability Scanner Tools For Penetration Testing
](https://hackreveal.com/10-best-vulnerability-scanner-tools-for-penetration-testing/)
[The Best Kali Linux Tools for Ethical Hackers](https://hackreveal.com/the-best-kali-linux-tools-for-ethical-hackers/)