teleren/devto huggingface dataset:
Working with Modules and NPM in Node.js 🚀
Published: 2024-06-18 23:22:55

Hi your Instructor here #KOToka


﻿Modules and npm (Node Package Manager) are essential tools in the Node.js ecosystem that enhance your development workflow.



1. Modules: Break your code into reusable pieces. Use `require` to include built-in modules or your own custom modules.



  ```javascript

  const fs = require('fs'); // Example of using the 'fs' module

  ```



2. NPM: Manage dependencies effortlessly. Use `npm init` to set up your project and `npm install` to add libraries.



  ```bash

  npm init -y  # Initialize a project

  npm install express # Install Express.js

  ```



By mastering modules and npm, you can streamline your development process and build more efficient, scalable applications. Happy coding! 💻✨ #NodeJS #Modules #NPM #WebDevelopment #Coding
SQLynx - Best Web-Based SQL Editor for Developers and Data Analysts
Published: 2024-06-18 22:59:45

Traditional SQL clients such as DBeaver, DataGrip, Navicat provide a GUI interface. SQLynx also provides a web-based SQL Editor. 
By adopting SQLynx DBAs no longer need to distribute database credentials to the individuals. DBAs configure the database credentials in SQLynx once, then grant database access to individuals conditionally.
SQLynx is a cutting-edge web-based SQL Integrated Development Environment (IDE) designed for developers and data analysts. 
It supports multiple databases, including Mysql，PostgreSQL, Oracle and features an intelligent code editor with syntax highlighting, code completion, and refactoring capabilities. 
SQLynx's modern web interface ensures cross-platform compatibility (MacOS, Windows, Linux), making it user-friendly and easy to configure. This powerful tool simplifies SQL editing and enhances productivity for users managing complex database tasks.
For more information, visit https://www.sqlynx.com/en/#/home/probation/SQLynx
Dicas de Terminal e SSH
Tags: linux, ssh, terminal
Published: 2024-06-18 22:55:39

Algumas dicas para ter um pouco mais de segurança no seu terminal, principalmente de uma segurança espacial no sentido do seu entorno e em conexões ssh.
- Use customizador de prompt como starship, nele é possível ocultar o nome da maquina e do usuário, podendo customizar de acordo com seu uso podendo criar seu próprio padrão.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/s3yx8gztdfykhwcvbrfo.png)
- Evite ter login por senha em seu servidor SSH, estude sobre chaves ssh mantenha ela em local criptografado e use uma passphrase;

- Configure seu .ssh/config com seus host, portas e nome de usuário.
 vai sair disso "ssh -p7642 usexpto@server.com" para "ssh server.com".

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4fbr6u2psl4804sgssrl.png)
- Mude a porta do seu SSH, isso ajuda mas não resolve os ataques.
- Se não consegue por um acesso somente por VPN, se possível implemente um "Port Knocking".
#dicas #linux #ssh #terminal
Vitoli builders, Inc.
Published: 2024-06-18 22:50:13


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/77qzqw55fw0k1vfhvm5d.png)


At Vitoli Builders, Inc. in Calabasas, CA, we specialize in transforming your outdoor spaces with our expert landscaping and hardscaping services. With years of experience, our dedicated team delivers stunning lawns and custom hardscape installations that reflect your unique style. Whether you need a custom BBQ area, low-maintenance pool design, or regular lawn upkeep, you can count on us to get the job done right. We pride ourselves on creating beautiful, functional landscapes at prices that fit your budget. Trust Vitoli Builders, Inc. to enhance your Calabasas property with exceptional landscaping solutions tailored to your needs.

Vitoli builders, Inc.
Address: 23586 Calabasas Road Suite 209, Calabasas, CA 91302
Phone: 866-575-5795
Website: [https://vitolilandscapedesign.com/](https://vitolilandscapedesign.com/)
Contact email: Info@vitolilandscapedesign.com

Visit Us:
[Vitoli builders, Inc. Yelp](https://www.yelp.com/biz/vitoli-landscape-design-calabasas-3)
[Vitoli builders, Inc. Nextdoor](https://nextdoor.com/pages/vitoli-landscape-design-woodland-hills-ca/)
[Vitoli builders, Inc. BuildZoom](https://www.buildzoom.com/contractor/vitoli-builders-inc)

Our Services:
Exterior Painting
Hillside Landscaping Specialists
Pool & Spa Design and Remodeling
Landscaping
Hardscaping
EcoScaping
Day 973 : Deal With That
Tags: hiphop, code, coding, lifelongdev
Published: 2024-06-18 22:28:58

_liner notes_:
- Professional : So... after all that time I spent filling out the form for the visa, I got rejected, again. The reason was the same as before, the wrong type was chosen. The organizer is telling me that it's the right type, but the visa people are saying it's not. I'm not going to deal with it anymore. I'm throwing in the towel and let someone else deal with that. haha Responded to some community questions. Spent the rest of the day working on refactoring a project.

- Personal : Went through some tracks for the radio show. Worked a little on my side project. Didn't do too much. Watched an episode of "The Boys" and went to sleep.

![The photo shows a beautiful mountain landscape with a lake in the foreground. The water is a crystal-clear blue-green color, and the sky is a deep blue with hazy clouds. The mountains in the background are snow-capped, and the trees are a lush green. There is a small island in the lake with several trees on it. The island is located in the middle of the lake and is surrounded by water. The sky is clear with a few clouds. The photo was taken from the shore of the lake, and there are no people in the photo. The location is Spirit Island, AB, Canada.﻿﻿](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/bjgqmvfm10jdkliv1ibu.jpg)

Going to go through more tracks for the radio show. I really need to finish this logo for my side project and get it uploaded. Probably end the night watching a couple of episodes of "Demon Slayer". Going to eat dinner and get to work.

Have a great night!

peace piece
Dwane / conshus
https://dwane.io / https://HIPHOPandCODE.com
{% youtube huqzP39Zo10 %}
Hashing
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-18 22:26:49

*This is a submission for [DEV Computer Science Challenge v24.06.12: One Byte Explainer](https://dev.to/challenges/cs).*

## Explainer

Hashing: converts input data into a fixed-size string (hash) using a one-way function. Key for quick data lookups (hash tables), data integrity, blockchain, password storage, and cryptography. Unlike encryption, it doesn't convert data for confidentiality.

## Additional Context

Picture from: [SignMyCode](https://signmycode.com/resources/best-hashing-algorithms) (Copyright © 2024 SignMyCode.com. All Rights Reserved.)
[Game of Purpose] Day 31 - collisions
Tags: gamedev
Published: 2024-06-18 22:07:13

Today I played around with collisions. I learnt that there are 2 types of collisions: Overlap and Block. In order to listen for these event I need to check the following options:

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4hdbld2qh3k2lleticq2.png)
Exploring Kotlin Coroutines for Asynchronous Programming
Tags: kotlin
Published: 2024-06-18 22:06:27

Asynchronous programming is essential for modern applications to handle tasks like network calls, file I/O, or heavy computations without blocking the main thread. Kotlin coroutines provide a robust and efficient way to manage such tasks.

**How Coroutines Work**
Kotlin coroutines enable writing asynchronous code in a sequential style. Key components include:

- CoroutineScope: Defines the scope in which coroutines run, ensuring structured concurrency.
- Suspend Functions: Functions marked with suspend can pause their execution and resume later, allowing non-blocking operations.
- Launch and Async: Functions to start coroutines. launch is used for fire-and-forget tasks, while async is used for tasks that return a result.

**Example: Basic Coroutine**

```
fun main() = runBlocking {
    launch {
        delay(1000L)
        println("World!")
    }
    println("Hello,")
}
```
In this example, launch starts a new coroutine, and delay is a suspend function that pauses the coroutine without blocking the main thread.

**Use Cases and Examples**

**1. Network Requests:**
  Using coroutines to handle network requests prevents blocking the UI thread.

```
suspend fun fetchData(): String {
    return withContext(Dispatchers.IO) {
        apiService.getData()
    }
}
```

**2. Parallel Decomposition:**
Running multiple tasks concurrently to improve performance.

```
runBlocking {
    val deferred1 = async { task1() }
    val deferred2 = async { task2() }
    println("Results: ${deferred1.await()} and ${deferred2.await()}")
}
```
**3. UI Updates:**
Ensuring smooth UI updates by switching contexts.

```
GlobalScope.launch(Dispatchers.Main) {
    val data = withContext(Dispatchers.IO) { fetchData() }
    updateUI(data)
}
```
**4. Handling Timeouts:**
Managing tasks with time constraints.

```
runBlocking {
    withTimeout(1000L) {
        val result = longRunningTask()
        println("Result: $result")
    }
}
```

**5. Structured Concurrency:**
Ensuring coroutines are properly scoped and cancelled.

```
fun CoroutineScope.massiveRun(action: suspend () -> Unit) {
    val jobs = List(100_000) {
        launch {
            repeat(1000) { action() }
        }
    }
    jobs.forEach { it.join() }
}
```

**Conclusion**
Kotlin coroutines offer a powerful model for handling asynchronous tasks, making code more readable and maintainable. By utilizing coroutine scopes, suspend functions, and structured concurrency, developers can build efficient and responsive applications. Coroutines are particularly beneficial for tasks such as network requests, parallel computations, UI updates, handling timeouts, and ensuring structured concurrency.

For further reading, explore the official [Kotlin](https://kotlinlang.org/docs/coroutines-guide.html) coroutines guide.
Find all palindromes in a string
Tags: go, interview, programming, career
Published: 2024-06-18 22:02:17

For this post, we're going to build off 2 of the previous posts in the series.

Write a golang function that finds all palindromes in a string.

I will interpret this to mean 'from the given string, find all strings within it that are palindromes'

In a previous [post](https://dev.to/johnscode/unique-combinations-of-a-string-ekj), we created a function to find all unique strings from a given string.

In the last [post](https://dev.to/johnscode/palindrome-check-a-string-3g4c), we created a function to check if a string is a palindrome. 

Using these 2 together, we can find all possible palindromes in a string.

```
func FindAllPalindromes(str string) []string {
	allPalindromes := []string{}
	uniqueStrings := uniquecombos.FindUniqueCombinations(str)
	for _, uniqueString := range uniqueStrings {
		if palindromecheck.PalindromeCheck(uniqueString) {
			allPalindromes = append(allPalindromes, uniqueString)
		}
	}
	return allPalindromes
}
```
It turns out, the unit test has a curveball worth noting here.

The `FindAllPalindromes` function builds the result array in whatever order the palindromes are found. This may or may not be the order of the 'expected' result in the unit test. 
For example, the string, 'aba', has 4 palindromes: 'a', 'aa', 'aba', and 'b'. However, `FindAllPalindromes` returns 'a', 'aba', 'aa', and 'b'.

We have several options here:

- write a function that compares two arrays without regard to order, ie the 2 arrays have the same elements and length.

- sort both the expected and result arrays, then compare

For simplicity, I chose the second option but have built the expected result of the test cases in presorted form to squeeze a little time off test runs. 

```
func TestFindAllPalindromes(t *testing.T) {
	testCases := []struct {
		input    string
		expected []string
	}{
		// note that expected arrays have been presorted for quicker test runs
		{"", []string{}},
		{"a", []string{"a"}},
		{"ab", []string{"a", "b"}},
		{"aba", []string{"a", "aa", "aba", "b"}},
		{"aab", []string{"a", "aa", "b"}},
		{"abcba", []string{"a", "aa", "aba", "abba", "abcba", "aca", "b", "bb", "bcb", "c"}},
	}

	for _, tc := range testCases {
		results := FindAllPalindromes(tc.input)
		// sort result to match expected order
		slices.Sort(results)
		if !reflect.DeepEqual(results, tc.expected) {
			t.Errorf("findUniqueCombinations(%q) = %v; expected %v", tc.input, results, tc.expected)
		}
	}
}
```
How can we make this better?

Post your thoughts in the comments.

Thanks!

_The code for this post and all posts in this series can be found [here](https://github.com/johnscode/gocodingchallenges)_
.NET 8 💥 - Intro to Kubernetes for .NET Devs
Tags: dotnet, kubernetes, containers, docker
Published: 2024-06-18 21:56:33

All .NET developers will eventually need to deploy their code, and one effective method is through Kubernetes.

In this video, I will provide a comprehensive explanation of Kubernetes tailored specifically for .NET developers. I will cover the fundamentals of Kubernetes, how it operates, and demonstrate how .NET web applications can seamlessly integrate within a Kubernetes infrastructure. This guide aims to demystify Kubernetes and empower .NET developers with the knowledge to effectively leverage this powerful deployment tool.


{% embed https://youtu.be/6QHOdAiA2tA %}

You can follow me

📹 Youtube  - http://youtube.com/@mohamadlawand
♯  Github   - https://github.com/mohamadlawand087
🎫 LinkedIn - https://www.linkedin.com/in/mlawand
💥 LinkTree - https://linktr.ee/mohamadlawand
var, let, const in JavaScript - summary of differences between them
Tags: javascript
Published: 2024-06-18 21:49:26

---
title: var, let, const in JavaScript - summary of differences between them 
published: true
description: Summary of differences between var, let, and const in JavaScript 
tags: #javascript 
# cover_image: https://miro.medium.com/v2/resize:fit:1100/format:webp/1*X3uZSHdqhsjt56lBFwWfvw.png
# Use a ratio of 100:42 for best results.
# published_at: 2024-06-18 21:07 +0000
---

Summary of Differences.
If you, like me, are tired of this interview question.

### Scope:

**var**: Function or global scope.

**let**: Block scope.

**const**: Block scope.


### Hoisting:

**var**: Hoisted and initialized with undefined.

**let**: Hoisted but not initialized (temporal dead zone).

**const**: Hoisted but not initialized (temporal dead zone).

### Re-declaration:

**var**: Can be re-declared within the same scope.

**let**: Cannot be re-declared within the same scope.

**const**: Cannot be re-declared within the same scope.


### Immutability:

**var** and **let**: Mutable references.

**const**: Immutable reference (the reference cannot change, but the value can if it's an object).

## Examples

### var

```js
function varExample() {
    console.log(x); // undefined (due to hoisting)
    var x = 10;
    if (true) {
        var x = 20; // Same variable, function-scoped
        console.log(x); // 20
    }
    console.log(x); // 20 (same variable as above)
}

varExample();
```

### let

```js
function letExample() {
    // console.log(y); // ReferenceError (temporal dead zone)
    let y = 10;
    if (true) {
        let y = 20; // Different variable, block-scoped
        console.log(y); // 20
    }
    console.log(y); // 10 (original variable)
}

letExample();
```

### const
```js
function constExample() {
    // console.log(z); // ReferenceError (temporal dead zone)
    const z = 10;
    if (true) {
        const z = 20; // Different variable, block-scoped
        console.log(z); // 20
    }
    console.log(z); // 10 (original variable)

    const obj = { name: "Alice" };
    obj.name = "Bob"; // Allowed (the object itself is mutable)
    console.log(obj.name); // Bob

    // obj = { name: "Charlie" }; // TypeError (can't reassign const)
}

constExample();
```
What is a Byte?
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-18 21:42:31

*This is a submission for [DEV Computer Science Challenge v24.06.12: One Byte Explainer](https://dev.to/challenges/cs).*

## Explainer

<!-- Explain a computer science concept in 256 characters or less. -->

In binary, 8 bits make up a byte, with each bit being 0 or 1, creating 256 unique values ranging from 0 to 255. Historically, a byte has been used to encode a single character of text, making it the smallest addressable unit of memory storage in computers.


## Additional Context

One Byte Explainer: Just like 256 values in a byte, this explanation fits perfectly within its size limit—byte-sized knowledge! 😉😆


Credits:

<!-- Please share any additional context you think the judges should take into consideration as it relates to your One Byte Explainer. -->

1. https://256stuff.com/256.html#:~:text=In%20any%20case%2C%20256%20is,base%20unit%20in%20a%20computer.
2. https://en.wikipedia.org/wiki/Byte

<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->

<!-- Don't forget to add a cover image to your post (if you want). -->
Photo by <a href="https://unsplash.com/@samsungmemory?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Samsung Memory</a> on <a href="https://unsplash.com/photos/person-holding-white-and-black-labeled-card-nk6o1WQ4j6k?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Unsplash</a>
  
<!-- Thanks for participating! -->
Python Basics 4: Input Function
Tags: python, programming, beginners, tutorial
Published: 2024-06-18 21:36:36

**_Input Function:_**
For taking input from the user directly, Python has a special built-in function, input(). It takes a string as a prompt argument, and it is optional. It is used to display information or messages to the user regarding the input.

syntax: input("A prompt for the user")

Suppose you're building a program where you need to know the name of the user. You can use the input function to do that. 
`name=input("What's your name?")`

Inside the input, we write the prompt, which will be displayed in the terminal to the user. Then user can write their input.

input() pauses program execution to allow the user to type in a line of input from the keyboard. After typing, the user needs to press the ENTER key otherwise, the program will be waiting for the user's input indefinitely. 

Once the user presses the Enter key, all characters typed are read, stored in the variable (name), and returned as a **string**.
(remember this, we'll talk about type conversion briefly!)


Now, let's suppose you also want to ask the user's age. As usual, you wrote your program like this:
`age=input("Enter your age:")`

If your program is executed like this, at first glance, you won't see any problems with the code. However, the problem will arise when you want to do calculations with this age. 

```
age=input("Enter your age:")
print(age+10)

#TypeError: can only concatenate str (not "int") to str
```
Why did this error occur? So technically, your age variable never stored an integer in the first place.

`print(type(age)) #output: <class 'str'>`
As you can see your age variable has stored the input as a string. And you can't do calculations between string and integer.

In order to solve the problem, you need to convert your string variable into integer. Which is called **Type Conversion or Casting**.

**How can you do that?**
 First, write down your datatype that you want to convert into. Then, use your input function to take input from the user. 

`age=int(input("Enter your age"))`

This way, now your age variable will convert string into integer and store that. And now you can do calculations. 

More Examples: float()- to convert into float, str()=to convert into string etc.

This type of type conversion is known as ;**Explicit Casting**, which is done by us, the programmars.
 
**Implicit Casting:** It is done by python. Here, python automatically changes between data types.
 
Ex: 

```
x=10(Integer)
x+=10.5
Print(x) >>> 20.5(Float)
Print(type(x)) >>> <class 'float'>
 
```
Here, python automatically changed integer into float .
 
The input function is one of the most used functions in python. You can make your program more user-oriented by using input function.
EXCEPTİON HANDLİNG FOR SHADY PEOPLE WİTH SHADY CODE
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-18 21:32:34

*This is a submission for [DEV Computer Science Challenge v24.06.12: One Byte Explainer](https://dev.to/challenges/cs).*

## Explainer
Exception handling is catching errors before the app crashes. For example, when you guess your shady code will throw an error, you can make a simple handler to catch and do something or intentionally throw an error because you are as shady as your code.
## Additional Context

@kerkg
A Thank You ❤️
Tags: community, watercooler
Published: 2024-06-18 21:29:49

✨ An army of 10,000 of you have hit the follow button next to my name.✨

That's far and away the largest number of people that have knowingly hit a button to engage with me in the 25+ years that I've existed on the internet.

That's a ludicrously large number to me, and it felt like a milestone worth celebrating. 🤘

With that, I just wanted to throw out a whole hearted thank you to everyone here. I've been writing on Dev.to off and on for just over 5 years now and it's been nothing but welcoming, and filled with enjoyable interactions with folks in the community.

Community is hard to find, but when you do find it, nurture it and enjoy it.

Thank you all very much!
Elevate Your Developer Setup with the Best Mechanical Keyboards
Tags: devtoys, webdev, productivity
Published: 2024-06-18 20:55:47

Imagine this: You’re in the zone, your fingers dancing across the keys as you bring your latest coding project to life. Every keystroke feels like a satisfying click, each one precise and purposeful. The right keyboard can make this dream a reality, turning your coding sessions into a symphony of productivity and comfort. Let’s dive into the world of mechanical keyboards and discover how these incredible tools can transform your developer setup. Here are some top picks from [MechanicalKeyboards.com](https://mechanicalkeyboards.com/r?id=07gbgn) that are perfect for developers like you.

Read the full review here! -> [Elevate Your Developer Setup with the Best Mechanical Keyboards - DevToys.io](https://devtoys.io/2024/06/18/elevate-your-developer-setup-with-the-best-mechanical-keyboards/)
Why Your Business Needs a Modern Website: A Real-Life Success Story
Tags: webdev, tutorial, productivity, learning
Published: 2024-06-18 20:50:33



Raise your hand if you've ever:

1. Visited a website and immediately left.
2. Felt frustrated by a slow, outdated site.
3. Wondered why some businesses thrive online while others don't.

I recently worked with a local bakery, Sweet Treats. Their pastries were amazing, but online sales were low. Their website was outdated, slow, and confusing. Customers couldn't find what they wanted, and sales suffered.

Emma, the bakery's owner, felt overwhelmed and stressed. She knew the website needed a change but didn’t know where to start.

The right website is crucial for business success. A poor website drives customers away. It creates mistrust and frustration.

We revamped the Sweet Treats website:
1. Made it modern and fast.
2. Improved user-friendly navigation.
3. Enhanced appealing design and quick load times.

The results? 
1. More visitors stayed on the site.
2. Online orders doubled within a month.
3. Emma felt relieved and excited.

A well-designed website:
1. Builds trust and credibility.
2. Showcases your brand effectively.
3. Provides a smooth user experience.

Invest in a professional website. Your business deserves it. Transform your online presence. Watch your business grow. Like Emma, you’ll see the difference.

Are you building the right website for your business success? Share your experiences and let's discuss!

get in touch -
my LinkedIn - https://www.linkedin.com/in/ridoy-hasan7