teleren/devto huggingface dataset:
Best practices in JavaScript development
Tags: programming, javascript, tutorial, webdev
Published: 2023-03-09 10:20:47

In this blog post, I will focus on some best practices in JavaScript development.

Best practices in JavaScript development refer to the set of guidelines that help developers write efficient, maintainable, and scalable JavaScript code. These practices are important because they ensure that the code is easy to read and understand, reduce the likelihood of introducing bugs and errors, and make it easier for other developers to work on the codebase.

Let's take a look at some of the best practices in JavaScript development and provide some sample code snippets to demonstrate how to implement them.



### 1. Use Strict Mode
Strict mode is a feature introduced in ECMAScript 5 that allows developers to opt-in to a stricter mode of JavaScript. It helps to prevent common coding mistakes and enables better error handling. To enable strict mode in your JavaScript code, add the "use strict" directive at the top of your script:

``` javascript
" use strict ";
```

### 2. Avoid Global Variables
Global variables are variables that are accessible from any part of the code, and they can cause issues with scope and maintainability. To avoid using global variables, wrap your code in a function or module and use closures to limit the scope of your variables:

``` javascript
(function() {
  var myVar = "Hello World";
  console.log(myVar);
})();
```


### 3. Use Meaningful Variable Names
Using meaningful variable names can make your code easier to read and understand. Choose variable names that accurately describe the data they represent. Avoid using abbreviations or single-letter variable names:

``` javascript
// this is a Bad variable name
var x =  10;

// Good variable name
var itemCount = 10;
```


### 4. Use Comments to Explain Your Code
Comments are an essential part of code documentation, and they help to explain how your code works. Use comments to explain complex code or to provide context for future developers who may need to work on your code:


``` javascript
// this is a fun that calc the total of two numbers
﻿
function addNumbers(num1, num2) {
  return num1 + num2;
}
```


### 5. Use Modular Code
Modular code is code that is organized into smaller, independent units that can be reused in different parts of your application. Use modules to make your code more modular and reusable:


``` javascript
// Module 1
var myModule = (function() {
  var myVar = "Hello World";
  
  function myFunction() {
    console.log(myVar);
  }
  
  return {
    myFunction: myFunction
  };
})();


// Module 2
var myOtherModule = (function() {
  function myOtherFunction() {
    console.log("This is another module");
  }
  
  return {
    myOtherFunction: myOtherFunction
  };
})();
```


These are just a few examples of the best practices that JavaScript developers should follow.

By implementing these practices, JavaScript developers can improve the quality of their code and become better developers.

Check more of my articles at https://melbite.com
What tools do you use to design APIs with OpenAPI Specification?
Tags: api, oas, openapi, discuss
Published: 2023-03-09 10:20:15

---
title: What tools do you use to design APIs with OpenAPI Specification?
published: true
description: 
tags: api, oas, openapi, discuss
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/c6o1ehgw08qev70whce4.png
---

There are several options for that (I'm talking about the [design-first approach](https://medium.com/@chamaral/what-is-api-design-first-approach-draft-ee14ae1369c4) here), like dedicated tooling ([Swagger](https://swagger.io/tools/swagger-editor/), [Stoplight](https://stoplight.io/studio), whatnot) or just bare IDE / code editor experiences (just writing JSON / YAML in VS Code, for instance). 

What do you prefer personally, and why?
Troubleshooting Hydration Failed Error in Next.js or react app
Tags: react, nextjs, javascript
Published: 2023-03-09 10:19:33


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/jle0u7semowu6ms0yye8.jpg)
**Introduction**

Hydration is the process of taking a static HTML page and turning it into a dynamic React application. Next.js uses this process to render pages on the server and then sends the HTML to the client. The client-side JavaScript then takes over, and the page becomes interactive. This process is called client-side hydration.

**Why hydration failed**

The hydration failed error occurs when there is a mismatch between the server-rendered HTML and the client-side JavaScript. This can happen when the HTML and the JavaScript have different states, leading to inconsistencies and errors.

There are several reasons why hydration can fail in react app . One of the most common causes is when the server and client render different content. For example, if you have a component that fetches data from an API and the API response is different between the server and client, then the hydration process will fail.

Another reason for hydration failure is when the server and client render the same content but in different orders. For example, if the server renders a component before its dependencies, but the client renders the dependencies first, the hydration process will fail.

**How to fix these problems**

To fix the hydration failed error, you need to ensure that the server and client render the same content in the same order. One way to achieve this is by using data fetching methods provided by Next.js such as getStaticProps, getServerSideProps, or getInitialProps. These methods fetch data during the server rendering process, ensuring that the server and client render the same content.

Another way to fix the hydration failed error is by using the useEffect hook. The useEffect hook allows you to fetch data on the client-side after the component mounts, ensuring that the client and server render the same content.

```
import { useState, useEffect, useRef } from "react";

const Howitworks = () => {
  const [initialRenderComplete, setInitialRenderComplete] = useState(false);
  // This useEffect will only run once, during the first render
  useEffect(() => {
    // Updating a state causes a re-render
    setInitialRenderComplete(true);
  }, []);

  return <>{initialRenderComplete ? <>hi write here code</> : null}</>;
};
export default Howitworks;

```
In conclusion, the hydration failed error is a common error that can occur while working with Next.js. To fix this error, you need to ensure that the server and client render the same content in the same order. This can be achieved by using data fetching methods provided by Next.js or by using the useEffect hook to fetch data on the client-side. By following these steps, you can ensure that your Next.js application runs smoothly and without errors.
Dockerizing Rick and Morty
Tags: programming, webdev, docker
Published: 2023-03-09 10:11:10



## Introduction

If you're a fan of Rick and Morty, you know that the show deals with some pretty complex concepts. From the multiverse to time-travel, the show often explores some pretty mind-bending ideas. So, it's no surprise that the show's characters might need a little help managing their applications. That's where Docker comes in. In this blog post, we'll explore how Docker can help Rick and Morty simplify their application management.

## Dockerizing Rick

As a scientist, Rick is always experimenting with new technologies. But sometimes, managing all of those experiments can be a pain. That's where Docker comes in. With Docker, Rick can easily package his experiments into containers and run them anywhere without worrying about compatibility issues. Plus, if something goes wrong, he can easily spin up a new container and start over.

## Dockerizing Morty

Morty may not be a scientist, but he still has his fair share of applications to manage. From his portal gun to his spaceship, Morty needs a way to keep everything organized. With Docker, Morty can package his applications into containers and run them anywhere with ease. Plus, if he needs to share an application with someone else, he can simply give them the container and know that it will run exactly the same as it does on his machine.

## Dockerizing the Multiverse

Of course, Rick and Morty don't just deal with applications on their own world. They often travel to other dimensions and universes, each with their own set of technologies and requirements. With Docker, they can easily package their applications into containers that can run on any platform, regardless of the underlying technology. This means they can focus on exploring new worlds without worrying about compatibility issues.

## Conclusion

In conclusion, Docker can be a powerful tool for managing applications, even in the wildest of universes. Whether you're a scientist like Rick or an adventurous teenager like Morty, Docker can help simplify your application management and keep your experiments running smoothly. So the next time you're dealing with a complex application, just remember: Dockerize it!
Convert website into API using web scraping and API framework
Tags: python, api, scrap, webdev
Published: 2023-03-09 09:58:47

Convert Website into API" is a tutorial that explores the process of converting a website into an Application Programming Interface (API). APIs are increasingly becoming an integral part of modern software development as they enable developers to interact with applications and services easily.

The tutorial starts by discussing the basics of APIs, including their benefits and the different types of APIs available. It then delves into the process of converting a website into an API, including the various tools and frameworks available to make this task easier.

The tutorial covers various topics such as scraping website data, setting up a server, handling requests and responses, and creating a JSON API. It also discusses different methods of authentication and security that can be implemented to protect the API.

[Convert Website into API Using Web Scraping and API Framework](https://technicbate.blogspot.com/2023/03/convert-website-into-api.html) tutorial is designed for developers with a basic understanding of web development and APIs. It provides a step-by-step guide on how to convert a website into an API, making it a valuable resource for developers looking to create their own APIs or integrate existing websites into their applications
4 Ways to Prevent Accidental S3 Object Deletion
Tags: aws, security, cloud
Published: 2023-03-09 09:33:19

Amazon S3 is often used for critical data such as backups and business-critical files. Protecting these files from accidental or malicious overwriting or deletion is crucial to avoid data loss and security issues.

In this post, I'll discuss four measures to ensure the protection of your S3 objects.

**1. Enable versioning on your S3 bucket**

By [enabling versioning](https://docs.aws.amazon.com/AmazonS3/latest/userguide/Versioning.html), every time an object is updated or overwritten, a new version of that object will be created, and the previous versions will be retained. This ensures that you have a complete history of all the changes made to your objects, and you can always revert to a previous version if needed.

**2. Use S3 Object Lock**

[S3 Object Lock](https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-lock-overview.html) allows you to lock the current version of an object to prevent it from being overwritten or deleted for a specified period of time. There are two types of Object Locks: Governance mode and Compliance mode. Governance mode allows you to enforce retention policies and prevent object deletion, while Compliance mode provides Write Once Read Many (WORM) functionality, ensuring that objects can't be deleted or modified for a specified retention period.

**3. Restrict access using IAM policies**

By using IAM policies, you can [restrict access to specific users or roles](https://aws.amazon.com/blogs/security/how-to-restrict-amazon-s3-bucket-access-to-a-specific-iam-role/), limiting who can modify or delete your S3 objects.

**4. Enable MFA Delete**

[MFA Delete](https://docs.aws.amazon.com/AmazonS3/latest/userguide/MultiFactorAuthenticationDelete.html) requires multi-factor authentication (MFA) before allowing a user to delete an object. By enabling MFA Delete, you can add an extra layer of security to prevent accidental or unauthorized deletions.

**Summary**

Protecting critical data stored in Amazon S3 is crucial for avoiding data loss and security issues.

Enabling versioning and using S3 Object Lock provide robust protection against accidental or malicious overwriting or deletion. Restricting access using IAM policies and enabling MFA Delete add an extra layer of security, preventing unauthorized deletions. 

By following these best practices, you can secure your S3 objects and ensure the safety of your critical data stored in Amazon S3.
Dive Deep, Drown Willingly ~ Ted Dekker
Tags: aws, microsoftcloud, javascript, computerscience
Published: 2023-03-09 09:20:48

Finally!!! I am on the track to be a _software developer_ in upcoming months. I have been looking into this journey from a long time. Started off by studying **CS50x by David J. Milan**, then got some hands on **youtube coding sessions**, got some **SQL** hands on from Udemy and finally I am in a bootcamp where all of this comes together to form a basic building block of a developer.

Thanks to _Amazon Career Choice_, I am currently enrolled in Software dev. bootcamp by **Flatiron School**, and I am glad to tell that my first week had a boost start! 
Its been just a week and I already have basic understanding of JS, HTML, CSS, DOM. 

I believe this duration would be deal breaker for me since I am highly motivated to fly through the course gaining the tremendous knowledge and skills my instructors would offer.

As the captions reads, its time for a deep dive and explore the underwater beauty of programming world.

`console.log("Happy Coding!");`
Git Problem With "src refspec does not match any"
Tags: git
Published: 2023-03-09 09:11:06

---
title: Git Problem With "src refspec does not match any"
published: true
description: src refspec does not match an error
tags: #git
# Use a ratio of 100:42 for best results.
# published_at: 2023-03-09 08:24 +0000
---
#Main Problem

#Pushing an Empty Repo unknowingly 
The main course of this issue is publishing an empty repo to non existing branch. Mostly, one tend to create a git repo by following git autogenerated procure while skipping to commit. As referenced, we failed to commit README.md file.   

$ git init 
$ git add README.md
$ git branch -M main
$ git remote add origin https://github.com/profile/repository.git
$ git push -u origin main

#Quick fix

One can resolve this issues by committing all the files immediately adding.

$ git init
$ git add .
$ git branch -M main
$ git add .
# $ git commit -m "message"
$ git remote add origin https://github.com/profile/repository.git
$ git push -u origin main 

...and would save lots of time, keep giting!
what are the most important concepts to learn in JavaScript
Tags: webdev, javascript, react, beginners
Published: 2023-03-09 09:06:55

JavaScript is a powerful programming language that can add interactivity to a website. Here are some of the main concepts in JavaScript:
1. Scope
2. IIFE (Immediately Invoked Function Expression)
3. Hoisting
4. Closures
5. Callbacks
6. Promises
7. Async & Await
Other important concepts include JavaScript Prototype, Abstraction, Encapsulation, Inheritance, and Polymorphism. These concepts are essential for every JavaScript programmer to know and master
Day 2 of 100 Days of ML Code: Python Basics
Tags: machinelearning, 100daysofcode, womenintech, codenewbie
Published: 2023-03-09 09:03:05

> "Python is an experiment in how much freedom programmers need. Too much freedom and nobody can read another's code; too little and expressiveness is endangered." - Guido van Rossum, creator of Python

On the second day of my #100daysofcode challenge, I have successfully completed the fundamental concepts of Python, such as conditional statements, loops, data structures, string manipulation, functions, modules, packages, and text file handling. I reviewed these concepts from [ML course for beginners](https://courses.analyticsvidhya.com/courses/Machine-Learning-Certification-Course-for-Beginners). I am now excited to explore the Python Libraries for Data science.

I learned a lot of concepts today, but it was too many to list here. I will continue listing my daily progress starting from tomorrow. I'll see you tomorrow for my daily update.


- Follow me on Twitter: [@purvamasurkar12](https://twitter.com/purvamasurkar12)
- Follow me on LinkedIn: [@purvamasurkar12](https://www.linkedin.com/in/purva-masurkar-6585291bb/)
MOT(2)
Tags: opengauss
Published: 2023-03-09 08:57:10

**Converting a Disk-based Table into an MOT**
The direct conversion of disk-based tables into MOTs is not yet possible, meaning that no ALTER TABLE statement yet exists for converting a disk-based table into an MOT.

The following describes how to manually perform a few steps in order to convert a disk-based table into an MOT, as well as how the gs_dump tool is used to export data and the gs_restore tool is used to import data.

**·** Prerequisite Check

Check whether the disk-based table to be converted to MOT contains all required columns.

Check whether the table contains any unsupported column data types, as described in the Unsupported Data Types section.

If any specific column data type is not supported, you are advised to first create a disk-based table with the updated column data types. This table is the same as the original table, except that all the unsupported types have been converted into supported types.

Afterwards, use the following script to export this disk-based table and then import it into an MOT.

**·** Conversion

To covert a disk-based table into an MOT, perform the following:

1. Suspend application activities.
2. Use gs_dump tool to dump the table's data into a physical file on the disk. Make sure to use the data only.
3. Rename your original disk-based table.
4. Create an MOT with the same table name and schema. Make sure to use the create FOREIGN keyword to specify that it will be an MOT.
5. Use gs_restore to load/restore data from the disk file into the database table.
6. Visually/Manually verify that all the original data was imported correctly into the new MOT. An example is provided below.
7. Resume application activities.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/mxycwozwxijfwkpybma2.png)

**·** Conversion example

Assume that you have a database named benchmarksql containing a disk-based table named customer to be migrated into an MOT.

To migrate the customer table into an MOT, perform the following:

1. Check your source table column types. Verify that all types are supported by the MOT. For details, refer to the Unsupported Data Types section.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dbizqttinlkerrahl0dx.png)

2. Check your source table data.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/q4d7xyedg2ee58lfwy7a.png)

3. Dump table data only by using gs_dump.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/t9c1emsnbicvddegbaw3.png)

4. Rename the source table name.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/731hyl3l16u0336bm7m3.png)

5. Create an MOT that is totally the same as the source table.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/a0tddudu0db3j3b1lk5k.png)

6. Import the source dump data into the new MOT.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/93kl1r7xksxl8vle6oln.png)
How to Safely and Effectively Use String.replaceAll() in JavaScript
Tags: javascript, node, programming
Published: 2023-03-09 08:46:08

## Understanding `replaceAll()`
`String.replaceAll()` is a method that takes two arguments: a search pattern and a replacement string. The method searches for all occurrences of the search pattern in the string and replaces them with the replacement string. The search pattern can be a string or a regular expression.

It's worth noting that `replaceAll() `is case-sensitive, so it will only replace occurrences that match the case of the search pattern.

## Common Pitfalls of Using `replaceAll()`

One common pitfall of using `replaceAll()` is using special characters in the search pattern. Special characters such as ** *, +, (, and ) ** have special meaning in regular expressions, so using them without escaping them can lead to errors or unexpected behavior.

For example, if you try to replace all occurrences of * with a using the following code:

```javascript
const originalString = 'This is a * test * string * with * asterisks.';

const newString = originalString.replaceAll('*', 'a');
```

You will get a browser warning that the regular expression is invalid:

```javascript
Invalid regular expression: /*
```

To avoid this issue, you need to escape special characters in the search pattern using a backslash. So to replace all occurrences of * with a, you would use the following code instead:

```javascript
const originalString = 'This is a * test * string * with * asterisks.';

const newString = originalString.replaceAll(/\*/g, 'a');

```

Another pitfall to watch out for when using replaceAll() is performance. Because replaceAll() searches for all occurrences of the search pattern, it can be slower than other string methods such as replace(), which only replaces the first occurrence.

## Tips and Tricks

To use replaceAll() safely and effectively in your JavaScript code, there are a few tips and tricks you can follow:

- Escape special characters in the search pattern using a backslash.
- Use regular expressions only when necessary, as they can be slower than string replacements.
- Be mindful of case sensitivity when using `replaceAll()`.
- Consider using a different string method such as `replace()` if you only need to replace the first occurrence of a substring.

In addition, `replaceAll() `can be particularly useful in certain patterns and use cases. For example, you can use `replaceAll()` to remove all whitespace from a string by searching for the \s pattern and replacing it with an empty string.

## Conclusion 
`String.replaceAll()` is a powerful method in JavaScript that can help you perform string replacements quickly and easily. However, using `replaceAll() `can also lead to errors and unexpected behavior if you're not careful. By following the tips and tricks outlined in this article, you can use `replaceAll()` safely and effectively in a wide range of scenarios . With a little bit of practice and experience, you'll be able to master `replaceAll()` and take your JavaScript string manipulation skills to the next level.