teleren/devto huggingface dataset:
Exploring the Significance of console.log() in JavaScript and var_dump() in PHP
Tags: programming, javascript, php, webdev
Published: 2023-08-13 15:22:48

One of the most used forms of computer technology is the web and it's mainly powered by two programming languages; JavaScript and PHP. These languages empower developers to create dynamic and interactive web applications, from simple corporate websites to e-commerce, social media, and other complex websites.

console.log() and var_dump() are the most important tools used by developers to understand their code and how it works, especially when looking for errors and debugging them, they also help when working with APIs to understand the structure of their response.

### The Developer's Lens: Debugging and Diagnosing

Both console.log() in Javascript and var_dump() in PHP serve as a lens for programmers through which they can look earnestly into the intricate workings of their coding. These functions act as companions to programmers when it comes to diagnosing issues and debugging them.

JavaScript’s console.log() is a built-in function used in Javascript programming language to print values, objects, and messages to the browser's console.

On the other hand, PHP’s var_dump() is also a built-in function that offers similar features to console.log() but gives a comprehensive view of values such as data type.

### Understanding Execution Flow

One of the most important parts of coding or skill needed by every developer is understanding the flow of execution and this is a very crucial step to identify the root causes of errors. console.log() and var_dump() play an important role in this purpose.

This is done mostly by placing these functions along an execution flow between methods and statements to understand how variables are manipulated and how methods are being executed and what kind of response they produce.

### Optimizing Performance

Apart from Debugging, console.log() and var_dump() also play a role in performance optimization. By using console.log() and var_dump(), developers can measure the efficiency of their code, and identify resource-intensive processes that lead to bottlenecks.

### Learning and Understanding

console.log() and var_dump() aren't just for debugging; they also help developers understand and learn the behaviour of their code, which leads to the optimization and brainstorming of new ideas.

### Conclusion

In modern programming, the role and importance of console.log() in JavaScript and var_dump() in PHP cannot be exaggerated. For every developer that is using either JavaScript or PHP or using both, these two functions are part of his daily activities, as they help in finding errors, debugging, understanding simple and complex code, and optimization. 

So, accept the power of console.log() and var_dump() and make them your important partners in your JavaScript and PHP codes.

##
What's Fresh in ECMAScript 2023 (ES14): A Closer Look
Tags: javascript, programming, tutorial
Published: 2023-08-13 15:13:31


Hello, friends! 😊 Welcome to another exciting exploration into the world of JavaScript. Grab a cup of coffee, settle in, and let's dive into the fresh offerings of ECMAScript 2023. Ready? Let's go! 🚀


![deep dive](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/v0hvqaqdzr5b7mtoil5e.gif)




JavaScript never stands still! ECMAScript 2023 (ES14) rolled out, bringing forth a set of new features that promise to simplify and refine your coding experience. Let's delve into what's new and how you can leverage these changes.

#### **1. Enhanced Array Search: findLast() and findLastIndex()**
In the past, to search an array from its tail end, you typically had to reverse the array first. ES14 introduces `findLast()` and `findLastIndex()`, making it more straightforward. 

*Before ES14:*
```javascript
const isOdd = number => number % 2 === 1;
const arr = [1, 2, 3, 4, 5, 6, 7];
const reversedArr = [...arr].reverse();

console.log(reversedArr.find(isOdd));       // 7
console.log(reversedArr.findIndex(isOdd));  // 6
```

*With ES14:*
```javascript
const isOdd = number => number % 2 === 1;
const arr = [1, 2, 3, 4, 5, 6, 7];

console.log(arr.findLast(isOdd));           // 7
console.log(arr.findLastIndex(isOdd));      // 6
```

#### **2. Embracing Hashbang**
ES14 brings standardized support for the hashbang (or shebang) syntax. It hints at which interpreter should be used for script execution.

*Using Hashbang in a Script:*
```javascript
#!/usr/bin/env node
console.log("Hashbang in action!");
```

#### **3. Symbols in WeakMap**
Previously, WeakMaps allowed only objects as keys. ES14 extends this capability to symbols, enhancing their versatility.

*Using Symbols in WeakMap in ES14:*
```javascript
const weakMap = new WeakMap();
const symKey = Symbol("identifier");

weakMap.set(symKey, "Hello ES14");
console.log(weakMap.get(symKey));  // "Hello ES14"
```

#### **4. Array Alterations Without Mutation**
ES14 has added methods that let you modify arrays without changing the original array, making functional programming patterns more accessible.

*Examples:*
```javascript
const numbers = [1, 3, 2, 4, 5];

console.log(numbers.toReversed());     // [5, 4, 2, 3, 1]
console.log(numbers.toSorted());       // [1, 2, 3, 4, 5]
console.log(numbers.toSpliced(1, 3));  // [1, 5]
console.log(numbers.with(2, 10));      // [1, 3, 10, 4, 5]
```





_**So in a nutshell....**_
The additions in ES14, from better array manipulation to extended WeakMap capabilities, aim to make JavaScript development smoother and more efficient. I'm eager to hear about your experiences. Have you tried these new features? Share your insights and let the developer community know how they're shaping up in real-world scenarios!


![cheers](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/2jtdbhhib6fd68sruzds.jpeg)
Handling AssertionError in Python: None != {'error': 'Invalid input'}
Tags: python, json, python3x, flask
Published: 2023-08-13 15:05:47

Handling AssertionError in Python: None != {'error': 'Invalid input'}
---------------------------------------------------------------------

As a software developer, you are bound to encounter various types of errors while coding. One such error is the `AssertionError` in Python. In this article, we will explore how to handle `AssertionError` when comparing `None` with a dictionary containing an error message like `{'error': 'Invalid input'}`.

Let's start by understanding what an `AssertionError` is. In Python, the `assert` statement is used to check if a condition is true. If the condition evaluates to false, an `AssertionError` is raised. It is commonly used for debugging purposes to catch logical errors in the code.

In the given scenario, we have a comparison between `None` and a dictionary containing an error message. The comparison `None != {'error': 'Invalid input'}` will always evaluate to `True` since `None` and a dictionary are not equal. Consequently, an `AssertionError` will be raised.

To handle this `AssertionError`, we can modify our code in a couple of ways:

1.  **Use an if statement:** Instead of using an `assert` statement, we can use an `if` statement to check the condition. For example:

 

    
    if None != {'error': 'Invalid input'}:
        # Handle the error
        print("Invalid input error occurred!")
      

 

This way, we avoid raising an `AssertionError` and can provide a custom error handling mechanism. You can replace the `print` statement with appropriate error handling code for your specific use case.

2.  **Use try-except block:** Another approach is to wrap the code in a try-except block to catch the `AssertionError`. For example:

 

    
    try:
        assert None != {'error': 'Invalid input'}
    except AssertionError:
        # Handle the error
        print("Invalid input error occurred!")
      

 

By catching the `AssertionError`, we can gracefully handle the error without causing the program to terminate abruptly. Again, you can replace the `print` statement with your desired error handling code.

Remember, handling errors effectively is crucial for writing robust and reliable code. So, don't let an `AssertionError` bring you down! With the right approach, you can conquer any error and emerge victorious!

### References:

*   [Python Documentation: The assert statement](https://docs.python.org/3/reference/simple_stmts.html#the-assert-statement)
*   [Real Python: Python Exceptions: An Introduction](https://realpython.com/python-exceptions/)
A Simple and Nice Slider from Alex Clark
Published: 2023-08-13 14:59:27

Original article : [Alex Clark Slider](https://alexclark.co.nz/blog/creating-a-simple-css-slider-with-scroll-snapping)


You can play with it here : [Slider](https://flems.io/#0=N4IgtglgJlA2CmIBcBWAHAOgAwHYA0IAxgPYB2AzsQskVbAIYAO58UIB5hATncgNpY8ARgBsAXQIAzCAnL9QpemERIQGABYAXMLHa1Sm+AZoAeKBABuAAkINy5ALwAdEOVjR4XK249cAtH6SAK6wsJxc8EYuAHxOpFZWJorWtvT2zq7uUJ4A+jnJMXEJCSYARkGammRWmhCaCBkA4sQ1LZrq8FaMERYQxEHk3lnwLlZQ9Jr0ft3wFrHxxQkAZAxcXADcRcUmAPTllWTzi2UVVfG19fBNbW0dVqTwAB6aQx6j45N+D89Hi1ZLXHoa02CxKe1Ohy2u2S8yh5hSdkcLh82S4eRR8HI7wmUwxXF+JWkAHMghEbIiMnj0cNCqDthAwETvFxCBktJpmEgdjtGBBCOQgmAMIx1MQquQdkIAExYLA7NCy0b0WCaDK0447Ymk+AExJasmpdLI4ZonIY9V-EwMpnkFlsyqc7m8-mC4Wi8WS2VygCcipAVmVqpcFrB+p1W0JEBJBopxt81LeIF1JWtzNZLnZjp5fIFQpFYuIEqEABZZZLS1glSq1UmI4lNVHtb9dvD5i3LNE9CwEIRamQ5KopUIkCIQABfPAKJQqNQAKzkBBIBiMmhoS-ILzxVgcY2IhEFK4wAEcgp4AJ4AZXgPaqXAAFC4+B9cSaxC4AJQg9cvGYWABCELxDuUB7geBjHqeXCXte8C9sQ96Ps+0w9G+ICfnE373E8mgAQcQG7vuyjgSe55Xje8EPiAT44l82GoehpBxMEpC9n08QYne5gRKxZDvlYwBbAgLwIJImgggkmHAN43B0AAMvAol4OSEArgA6tA7RWGO26vKiIJbOQADudSEOoVicRA3F9qQfECXShBpJ0Li-i4SB1gkIkvDu4RyQpLx+Mpakaeo4l-KUET0AA1qFEmOVYLjfJorl1tkkj0CEmhuXSHl+TpPmhPJolWAA1IFBjqVA7QxcU4XwFFoVjnEBkmhg+WwHedmLJ5eB1qU8DqPQvTwUg8WuGAxBiuowYLGODGNYxpAQJI5lbksSxdD0uFnP862JVtvH8Vsv77aQGD0DAACiFgrrJEAbkYniUbYfKRS4Sl3nxDjRLp8CUS5aEMQke2AWdl3XQYt33Q8CFEO4hCvew5mfd9HEJdhH5zXEXYwTxFA0EI3pIN646TiAijKDQGD8gu+iGMYqg7AAVFYf5xYzOxNadW6dWMd2MAwZ4jZICCPKFypRqQfh1PAYDkCNhArp4oWMIWdRsSNEQMLU10gvNcStSaCbZIMPNgPQjx+B0UZaCNCoWCFR2q9ZGvXhMljwKF5jkPz9CC1YwtPGL7hEpL0uy-LisbFsRJMCNADMERgKFxDXVwwvEIZfiPCNbWhW1fjkIojB+JoZ6MPAI2PFYZukB88Fnsnqf531A1Df42c2GQkwQKQuucwb8ZmsMh0LPnhdMH44shznkxcGJWwBxb5DqFwPeRSNWCe3zAtCyLQcS1LhjhzYkehbOAy1JIZ5+EudOZSfy5RwsxmVeoI1CLKFiGX3C0D6iRudG+qmU25s-Av3aO-WUABSUKVsiQ2ysB-LAMCtjEFKLOWCmhAh1Hll3egPcf5xCZlYAAcoNKMbtqjs31lSfIg0R4JC9j7P2i994h0PjLOWD9DBPwSOfDcS1r63xXDnRg9AFZ+D6poQykRe5bHAW-RB0DlZO3VgGUolBYAVA9lsKojARooGQaFTQgIKCSHgmAEaJj6AUC1vAAAmnePwhioGAysAALylrXJ4kCVE9x4X4WYK4uGkDIDo0gesuaGzodYb6+xto83MQYQISgZB+3IDY8gBdPBLVCqUcRkUiQ8CCLXEapQGDw1CiQWAw0rCGXUNLZW51zCkCJO-ROxjTHkDVmQEaypYBWCwBgKUgw6osC8X4fo88Fgq38Z4QJ4NNBcJ7mrZUhComD2SFYOJgEkCilTgwqw+T4ZFP6KUqwRTfZVNJJQLgI1ZmP3WcQgAssQcw0hPCDGoRs1EARgihHCLIw5cCEFIPtusv+8zAghDCNwIFkLTQYhNlsM2FsQX3zBQ7BYMd9GDIhXiP5MLAVGCsAigBwL4DWwxZ-LFkSEWEoBXCklZKh4eCsMA1B6DMHYPviQVOoUFGQKMVsdFQqUERKxhwHG1kBwgAVEgLA44xBjiAA)
How to Optimizе PostgrеSQL Pеrformancе for Largе Datasеts
Tags: postgres
Published: 2023-08-13 14:48:53

PostgrеSQL is a powеrful and popular opеn-sourcе rеlational databasе managеmеnt systеm.  Howеvеr,  as with any databasе,  pеrformancе can bеcomе an issuе whеn dеaling with largе datasеts.  In this blog,  wе will discuss somе tips and tеchniquеs for optimizing PostgrеSQL pеrformancе whеn working with largе datasеts. 

## 1.  Databasе Indеxing

Onе of thе most еffеctivе ways to improvе thе pеrformancе of a PostgrеSQL databasе is through thе usе of indеxing.  A databasе indеx is a data structurе that improvеs thе spееd of data rеtriеval opеrations by rеducing thе numbеr of disk accеssеs rеquirеd to find a particular rеcord.  By crеating an indеx on onе or morе columns of a tablе,  you can significantly spееd up quеriеs that involvе thosе columns. 

## 2.  Hardwarе Upgradеs

Anothеr way to improvе thе pеrformancе of a PostgrеSQL databasе is by upgrading your hardwarе.  This can includе adding morе RAM to your sеrvеr,  upgrading your CPU,  or switching to fastеr storagе dеvicеs such as SSDs.  By bееfing up your hardwarе,  you can improvе thе ovеrall pеrformancе of your databasе and rеducе quеry timеs. 

## 3.  Quеry Optimization

Optimizing your quеriеs is anothеr important stеp in improving thе pеrformancе of a PostgrеSQL databasе.  This can involvе using `EXPLAIN` and `EXPLAIN ANALYZE` to analyzе thе quеry plan and idеntify bottlеnеcks,  as wеll as rеwriting quеriеs to makе thеm morе еfficiеnt.  By optimizing your quеriеs,  you can rеducе thе amount of timе it takеs for your databasе to rеturn rеsults. 

## 4.  Configuration Tuning

Tuning your PostgrеSQL configuration can also hеlp improvе pеrformancе.  This can involvе adjusting paramеtеrs such as `sharеd_buffеrs`,  `work_mеm`,  and `maintеnancе_work_mеm` to bеttеr suit your workload.  By finе-tuning your configuration,  you can improvе thе ovеrall pеrformancе of your databasе. 

In conclusion,  thеrе arе many ways to optimizе thе pеrformancе of a PostgrеSQL databasе whеn working with largе datasеts.  By following thе tips and tеchniquеs outlinеd in this blog,  you can improvе thе pеrformancе of your databasе and rеducе quеry timеs. 

Sourcе:
(1) https://mеdium. com/gееkculturе/4-ways-to-optimisе-postgrеsql-databasе-with-millions-of-data-c70е11d27a94. 
(2) https://stackify. com/postgrеsql-pеrformancе-tutorial/. 
(3) https://stackovеrflow.com/quеstions/36148555/postgrеs-optimization-chеcklist-for-largе-datasеts.
Open API
Tags: api, openai
Published: 2023-08-13 14:43:33

## Pengenalan Open API

Ada beberapa definsi Open API yang diambil dari beberapa sumber:

- The OpenAPI Specification is a specification language for HTTP APIs that provides a standardized means to define your API to others. You can quickly discover how an API works, configure infrastructure, generate client code, and create test cases for your APIs. Read more about how you can get control of your APIs now, understand the full API lifecycle and communicate with developer communities inside and outside your organization.

Terjemah:

Spesifikasi OpenAPI adalah bahasa spesifikasi untuk API HTTP yang memberikan cara standar untuk mendefinisikan API Anda kepada orang lain. Anda dapat dengan cepat mengetahui bagaimana API berfungsi, mengkonfigurasi infrastruktur, menghasilkan kode klien, dan membuat kasus uji untuk API Anda. Pelajari lebih lanjut tentang bagaimana Anda dapat mengontrol API Anda sekarang, memahami seluruh siklus hidup API, dan berkomunikasi dengan komunitas pengembang di dalam dan di luar organisasi Anda. 

Sumber : [https://www.openapis.org/](https://www.openapis.org/)

- An open API (often referred to as a public API) is a publicly available application programming interface that provides developers with programmatic access to a (possibly proprietary) software application or web service. Open APIs are APIs that are published on the internet and are free to access by consumers.

Terjemah : 

Sebuah API terbuka (sering disebut sebagai API publik) adalah antarmuka pemrograman aplikasi yang tersedia untuk umum dan memberikan akses pemrograman kepada pengembang untuk berinteraksi dengan sebuah aplikasi perangkat lunak atau layanan web (kadang-kadang bisa jadi milik perorangan atau perusahaan). API terbuka ini diterbitkan di internet dan dapat diakses secara gratis oleh pengguna.

Sumber : [https://en.wikipedia.org/wiki/Open_API](https://en.wikipedia.org/wiki/Open_API)

- OpenAPI merupakan standar spesifikasi, tidak tergantung bahasa pemrograman apapun, untuk membuat dokumentasi RESTful API.

Sumber : [Youtube Programmer Zaman Now](https://www.youtube.com/watch?v=o5b6TYSNK5c&t=48s)

- OpenAPI, juga dikenal sebagai Spesifikasi API Terbuka (OAS), adalah sebuah kerangka kerja yang digunakan untuk mendefinisikan, mendokumentasikan, dan mengelola antarmuka pemrograman aplikasi (API) secara konsisten. Ini adalah spesifikasi standar yang memungkinkan pengembang perangkat lunak untuk mendeskripsikan bagaimana API mereka berfungsi, termasuk operasi, parameter, format data, autentikasi, dan banyak aspek lainnya.

- 
Sumber : [ChatGPT](https://chat.openai.com/share/cce07d8d-3c43-4a6b-8ef9-b739472d1b74)

Jadi kesimpulanya ada 2 definisi dari Open Api :

1. Open Api adalah standart dokumntasi untuk membuat API
2. Open Api adalah API yang dipublikasi untuk dapat digunakan oleh orang lain
Mastering React Component Development: Best Practices for Maintenance, Testing, and Reusability
Tags: react, webdev, beginners
Published: 2023-08-13 14:35:00

Originally published on www.ghazikhan.in

React is a popular library for creating user interfaces with JavaScript. React components are reusable pieces of code that can render UI elements, handle events, manage state, and perform other tasks.

As an author of 4 NPM libraries which include 3 React
Component Libraries and 1 NodeJS Library. In this blog post,
I will share some best practices for building React components that are easy to maintain, test, and reuse.

- Use functional components over class components. Functional components are simpler, more concise, and easier to test than class components. They also support hooks, which are a powerful way to add state and side effects to your components without using classes or lifecycle methods.

- Use prop types and default props. Prop types are a way to specify the types and validations of the props that your component expects. Default props are a way to provide default values for the props that are not required or not passed by the parent component. Using prop types and default props can help you avoid bugs, document your component's API, and improve the developer experience. It would be great if you use Typescript.

- Use custom hooks for common logic. Custom hooks are a way to extract and reuse common logic that is shared by multiple components. For example, you can create a custom hook for fetching data from an API, managing a form state, or accessing a global context. Custom hooks can help you avoid code duplication, improve readability, and simplify testing.

- Use styled-components for styling. Styled-components is a library that lets you write CSS-in-JS, which means you can define your styles as JavaScript objects or template literals and apply them to your components. Styled-components can help you avoid conflicts with global styles, use dynamic props or themes for styling, and co-locate your styles with your components.

- Use React Testing Library for testing. React Testing Library is a library that helps you test your React components in a way that simulates how users interact with them. React Testing Library can help you avoid testing implementation details, focus on user behavior, and write tests that are more reliable and maintainable.

- Use `tsdx` if you want to scaffold a component library with typescript. It does all the heavy lifting and give you an initial point to start component development. 
[You can check this blog for step by step guide with tsdx
component development](https://www.ghazikhan.in/blog/creating-a-react-library-using-tsdx-and-automating-publishing-with-github-actions)
What are HTTP status codes?
Tags: webdev, beginners, programming, tutorial
Published: 2023-08-13 14:11:42

Status codes are messages a website's server sends to the browser or system to indicate whether or not a request has been fulfilled.
Categories of status codes:


•	Informational responses (100 – 103): They are messages that alert the user to wait for a final response when the request is processing.


•	Successful responses (200 – 207): This category of status codes indicates the action requested by the client was received, understood, and accepted.



•	Network messages (300 – 308): These messages indicate that the requested content has been moved and will require further action to complete the request.



•	Client side error responses (400 – 499): They are messages that indicate an error caused by the clients input.



•	Server side error responses (500 – 599): They are messages that indicate that the server which the client is trying to access has a problem.



![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3rbkjyghhnmk5gu1ih2x.png)
🚀 Redux Demystified: A Fun, Quick Guide!
Tags: react, webdev, javascript, beginners
Published: 2023-08-13 13:40:15

📌 **Introduction**:
Hello wonderful dev community! Ever been in a quagmire trying to explain or understand Redux? Fear not! I've crafted a whimsical yet enlightening guide that breaks down Redux like you've never seen before. Perfect for newbies and pros alike!

🛠️ **Key Takeaways**:

**The Basic Principle:** One pot of state; no more juggling around!
**The Three Musketeers of Redux:** Actions, Reducers, and the almighty Store.
**Middleware Magic:** Meet the bouncers of the Redux nightclub.
**Marrying Redux with React:** react-redux - the perfect matchmaker.
**Performance Boosts:** Optimize and conquer.
**Redux DevTools:** Your time-traveling Delorean awaits.
💡 **Quick Snippet:**

## Actions - The town criers!

```javascript
{
  type: 'ADD_TODO',
  text: 'Embrace Redux'
}
```

## Reducers - The state sculptors.

```javascript
function todos(state = [], action) {
  switch (action.type) {
    case 'ADD_TODO':
      return [...state, action.text]
    default:
      return state
  }
}
```
✨ **Why Should You Dive In?:**

Digestible Content: Bite-sized sections for on-the-go learning.
Real-time Examples: Concrete code snippets for hands-on understanding.
Comic Relief: Who said learning can't be fun?

📚 **Read the Full Guide Here:**

🔗 [medium link](https://medium.com/@shubhamgautamlog/redux-in-a-nutshell-an-almost-comedic-revision-guide-for-web-devs-5501e2f23325)

🙌 **Let's Connect!:**

If you found this sneak peek intriguing, show some love with a ❤️ or 🦄. Got feedback or want to share your Redux tales? Drop them in the comments! Let's keep the code conversation flowing!