teleren/devto huggingface dataset:
Insights from Python Experts: Interview with John Smith, Senior Python Developer
Tags: career, python, programming, tutorial
Published: 2023-05-03 16:31:23

**Introduction:** As a Python programmer, it's always helpful to learn from experienced developers who can share their insights and knowledge. In this interview, we talk to John Smith, a Senior Python Developer with over 10 years of experience in the field. John has worked on various Python projects and has a wealth of knowledge to share with us.

**Interview Questions:**

Can you tell us about your experience with Python and how you got started with it?

What are some of the most challenging projects you have worked on as a Python developer?

In your opinion, what are the most important skills for a Python developer to have?

How do you keep up with the latest trends and updates in the Python community?

What advice would you give to someone who is just starting out as a Python programmer?

**Conclusion:** It was great to hear from John and learn about his experiences as a Senior Python Developer. We hope that his insights and advice will be helpful to anyone who is interested in learning more about Python programming. We encourage you to continue to learn and grow as a developer, and to seek out the knowledge and expertise of others in the field. Thank you, John, for sharing your time and expertise with us!
Larry LP
Published: 2023-05-03 16:22:32

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New Team
Tags: javascript, webdev, beginners, programming
Published: 2023-05-03 16:22:32

###Hi I am Abdessattar Elyagoubi and I am a FullStack developer.
Recently, I've got a new idea about making a `Team` , so I found that **DEV** is the home of developers. This post is for `Developers` who want to join the team.
#[Click here to join us](https://forms.gle/zmT8ExYTCjtmzVmc7).
Boilerplate code in Node Js
Tags: javascript, node
Published: 2023-05-03 16:17:31

As I began developing REST APIs on the server side with Node.js, I repeatedly faced the challenge of determining the appropriate folder structure. Although there is no definitive answer to this issue, I discovered a Node.js folder structure and architecture that suited my requirements after reading several articles on the topic. In this post, I would like to share my approach to organizing and structuring Node.js REST APIs. Additionally, I have created a GitHub repository that includes a sample application which you can utilize as a template for your own project.

It is worth noting that my implementation employs Express.js as the web framework and TypeORM as the ORM. However, adapting this folder structure to other frameworks should not be too difficult.

The architecture mainly relies on a component-based approach, making it easier to request only the necessary data. For instance, we have a User component that encompasses all user-related information.

Let’s start with the root directory.
**Directory: root**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/t5fcj7tzo5r59b6vr4nh.png)
The root directory is fairly ordinary and ought to be familiar to you. It essentially constitutes a fundamental Node.js configuration that encompasses certain configuration files for linting, Docker, and other similar components.

However, the most intriguing aspect of this structure lies within the contents of the "src" folder, which this post specifically discusses. Consequently, what precisely does this directory contain?

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/b9gvyb5m2zzr9jxr9hbg.png)

**Directory: src/api**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/r3f5inyn7fqowuxilsnv.png)

**Directory: src/api/components**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/aur78a7r22ohfhj3d33i.png)
At the core of our Node API based on components, we find the following: every component has its own set of routes, controllers, models, repositories, policies, tests, and templates.

Now, let us delve into the User component and explore it in further detail.

**Directory: src/api/components/user**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/t7j8fgj9b5vc9iq0utut.png)

**Directory: src/services**
This directory contains global services we might need for authorization, sending mails, caching, or helper methods for example.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/c6yeaass54ay05haq2pl.png)

Chekcout my github repo to see all the files and how code is organised
https://github.com/Rcoder0907/node-folder-structure
HOISTING in JavaScript - The real Meaning
Published: 2023-05-03 16:00:23

**

## What is Hoisting 🤔? 
**

I know you must have heard that hoisting is the process whereby the interpreter appears to move the declaration of functions, variables or classes to the top of their scope, prior to execution of the code.
Yes,this is correct but not absolutely because it doesn't cover the whole story of what and how it happens.

So **What Really is Hoisting?**
Okay, this is the point where I should define hoisting right but I'm sorry that's not gonna happen I'd rather just try to explain how and what happens so let's go 💪🏾.

**---------**

When we run our scripts and the global object and "this" keyword has been created, JavaScript starts storing our variables and functions in the memory heap.

**How does it happen?**

**For Variables** :
JavaScript usually reads our scripts twice, in the first reading each variables declared are stored but their values will be **undefined** i.e each variables in our code will have its value set to undefined in the memory heap.
So after the first reading of the script, JavaScript starts the second reading and this is the phase where the variables are assigned their real values.

**Now for Functions**:
In the first reading all function blocks are skipped until when invoked, i.e JavaScript does not read/execute our functions until we invoke them.
Though function declaration are also stored to the memory in the first reading but are executed only when we invoke them.

What these means is that during the first reading when JavaScript gets to a Function declaration it stores it to the memory and keeps going, but the second reading is when the execution of those functions takes place.

**Let's look at some code**


![code snippet ](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/59vds7grqa1w170p9qoo.jpg)

**Why is x undefined? 🤔**
Why x is undefined is because In the first reading, the console.log was not executed so line 4 was skipped and line 5 was read, so x is stored in the memory now but it's value will be undefined since it's the first reading.
In the second reading, console.log is now executed but the value of x is still undefined because line 5 is not executed yet and the real value is not yet assigned.

**Another Example**


![code snippet](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1s18rxyv7gqkmr9od1q4.jpg)

In the above code we're able to invoke myFunction before its declaration because In the first reading the function's invocation didn't take place but its declaration was stored in the memory. 
Then in the second reading,the function was invoked but since we have myFunction in the memory we're able to use it because the function is stored in the memory before it invocation.

**NOTE**:
Using values or functions declared with "let" or "const" will result in error, because after the first reading their values are first kept in the Temporary Dead Zone which makes them inaccessible unless after the second reading.
Feeling bad
Published: 2023-05-03 15:53:41

Biết gì không? Mày chỉ đang dùng sự bận bịu, công việc để trốn chạy thực tại rằng m vẫn còn thích Linh rất nhiều. M thấy không, chỉ cần vô tình 1 ngày m làm xong việc sớm, có thời gian rảnh nhiều 1 tý, tâm trạng m sẽ không tốt ngay. Vì cái gì ư? Chắc m hiểu rõ mà.
M sợ phải đối diện thực tại. Đối diện với cảm xúc của chính m Tuệ à. Biết chứ, biết là khó rồi, làm gì dễ quên vậy được, nhưng mà ấy, muốn quên phải đối diện. M đã từng trốn chạy 1 lần rồi, m cũng hiểu đấy, càng chạy càng yêu mà thôi. M đã từng chạy như vậy gần 1 năm trời. Khi nhận ra vấn đề thì m lại mất gần 1 năm nữa để quên hẳn 1 người. Đúng không? Vậy cớ sao giờ m lại đi trên đúng con đường đó 1 lần nữa vậy? Đối diện và chấp nhận. Hoặc đối diện và thay đổi. Đừng chạy trốn! Biết m đang tốt hơn từng ngày đó, m đang rất chăm chỉ mỗi ngày để cải thiện chính m. Nhưng phải chấp nhận nữa.
Should you learn Linux shell commands as a web developer in 2023?
Tags: webdev, php, beginners, productivity
Published: 2023-05-03 15:46:13

_**In this day and age there are nearly an infinite amount of tools that one person or the other is recommending to us as Web Developers.**_

**Of course it would hurt no one to have another skill under their belt, but would it actually be useful?**

There are definitely a few scenarios where this skill will serve you well. In my experience, this is especially true with PHP which is part of the LAMP stack _(Linux Apache MySql PHP)_.

I know many developers discourage the use of PHP due to the unholy amount of diversity in the language because of it’s old age, and also performance-wise there are better alternatives. ☉ ‿ ⚆

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/fw552s263f7si51vx3eb.png)

Regardless of this, PHP is still used by **~78.9%** of all websites that utilize a server-side language. Thus making PHP still quite a relevant topic.

**_But why would knowing Linux Shell Commands help with developing in PHP? Can’t I just learn the PHP versions of the commands?_**

I would argue that understanding what the PHP commands do to the underlying Linux system to achieve your desired result is a very good thing to know.

Not only because you will get a deeper understanding of commands commonly used in PHP but you’ll also be able to work in the Linux shell effectively when needed.

The syntax between the commands in PHP and the Linux Shell can be extremely similar. Take the following comparison, both instances achieve the same result:



```php
# Removing a directory in PHP
rmdir('exampledir');
```

```bash
# Removing a directory in the Linux Shell
rmdir exampledir
```


## But I don’t use PHP in my workflow… So is this skill useless?

NO, not by a long shot. In fact I recently set up a server/droplet to run NodeJS through Digital Ocean. I had to use Linux Shell Commands to navigate the files, edit files, and start the server’s service, and honestly knowing Shell Commands aided me tons.

**_Linux powers the majority of servers in the world._**

The truth is, most of the services that allow you to host your websites, at the core are Linux. So if you ever need to interact with the underlying OS, knowing the commands to do so will save you quite a bit of time.

## Conclusion
In the end, it really depends if you are going to utilize the skill and if you have time to learn it.

I personally just completed a course on the subject and find it useful when I need to code in PHP or set up a new droplet. You may not use Linux Shell Commands often, but when you have to, knowledge on the subject will serve you well.

**_That’s it for this post._** I do hope this post helped with your decision of whether or not to learn Linux Shell Commands.

**Let me know your thoughts and Happy Coding!** ヽ༼ ຈل͜ຈ༼ ▀̿̿Ĺ̯̿̿▀̿ ̿༽Ɵ͆ل͜Ɵ͆ ༽ﾉ



Hey, I'm [William Bojczuk](https://williambojczuk.dev).

For more tips, tricks and tutorials follow GrowInCode on [YouTube](https://www.youtube.com/@growincode) or [Instagram](https://www.instagram.com/growincode/).
javascript expression vs statement, and their importance in react
Tags: webdev, javascript, beginners, react
Published: 2023-05-03 15:35:26

In JavaScript, expressions and statements are two fundamental building blocks of the language. Understanding the difference between them is crucial for writing efficient and maintainable code.

**JavaScript Expression:**

- An expression is a piece of code that evaluates to a single value.
- Expressions can be used in any place where a value is expected.
- Examples of expressions include arithmetic operations, function calls, and variable assignments.

```
// JS Expressions
5 + 7
myFunction()
x = 100

```
**JavaScript Statement:**

- A statement is a piece of code that performs an action.
- Statements are executed by the JavaScript engine and do not produce a value.
- Examples of statements include loops, conditionals, and declarations.

```
// JS Statements
if (x > 10) {
  console.log('x is greater than 10');
}

for (let i = 0; i < 5; i++) {
  console.log(i);
}

function myFunction() {
  return 'Hello, Readers!';
}
```
**Importance in React**

React is a library for building user interfaces using a declarative approach. It relies heavily on the concept of components and the use of expressions to define the structure and behavior of JSX and Conditional Rendering

In React, you often use JSX (JavaScript XML) to create and define elements in your components. JSX allows you to embed JavaScript expressions within HTML-like syntax. Understanding the difference between expressions and statements is crucial for using JSX effectively.

```
//JSX with expression

const App = () => {
  const name = 'John';
  return <div>Hello, {name}!</div>;
};

```

Expressions are used in React to conditionally render elements based on specific conditions.

```
//JSX with conditional rendering
const App = () => {
  const isLoggedIn = true;
  return (
    <div>
      {isLoggedIn ? <div>Welcome!</div> : <div>Please log in.</div>}
    </div>
  );
};

```

In conclusion, understanding the difference between expressions and statements is crucial for working with React effectively. It allows you to write clean, maintainable, and efficient code, as well as use advanced features like conditional rendering and embedding JavaScript expressions within JSX.

---
Follow up: 
Have you ever seen an if-else block in writing JSX ?
What are foreign Data Wrappers ( FDW ) in postgresql and mysql.
Published: 2023-05-03 15:19:48



A foreign data wrapper is a specification to access remote data, also called SQL management of External data **(SQL/MED)** . It was added to SQL standard in 2003. This feature has been developing by PostgreSQL.

 So, in SQL/MED, there is a table on a remote server called foreign table. Now PostgreSQL foreign Data wrappers (FDW) are that use SQL/MED to manage foreign tables.

![Foreign Data Wrapper](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/e7bndp88z0b2d8d235j8.png)

## Accessing these foreign tables on remote server:

We can access these foreign tables on the remote server after installing some specific software. Lets say we have two different remote servers, namely, postgresql and mysql. Which have foreign_pg_tbl ad foreign_my_tbl, respectively. We can access these foreign table from the remote server to our local server by using and issuing the **SELECT** queries as follows.

To access table from remote postgresql Server.

```
Localdb=# -- foreign_pg_tbl is on the remote postgresql server.
localdb-# SELECT count(*) FROM foreign_pg_tbl;
count

output:
2000

```
To access table from remote mysql Server.

```

Localdb=# -- foreign_my_tbl is on the remote mysql server.
localdb-# SELECT count(*) FROM foreign_my_tbl;

count
10,000

```

we can also use the join operations on the foreign tables just like we use it on the local tables stored. 

For example

```
Localdb=# SELECT count(*) FROM foreign_pg_tbl AS p, foreign_my_tbl AS m WHERE p.id = m.id;
Count
10,000

```

That's just a basic overview about FDWs. In the coming sections we will explore more about it🚀💻. If you are interested and want to read more about this you can check references. 

## References

[https://www.interdb.jp/pg/pgsql04.html](https://www.interdb.jp/pg/pgsql04.html)
Bugs for Bucks: How to Get Paid for Finding Vulnerabilities
Published: 2023-05-03 13:51:54

Cybersecurity experts have a vital role in protecting businesses and organizations from cyber threats, and one way to contribute to this effort is through bug bounty programs. These programs incentivize ethical hackers to find and report system vulnerabilities, helping organizations identify and fix security issues before malicious actors can exploit them. If you're interested in getting started in bug bounty hunting, here are some tips to help you along the way:

**Learn the basics:** Before hunting for bugs, you must understand cybersecurity principles and practices. This includes knowledge of programming languages, web application security, and network security.
Choose a bug bounty program: Many bug bounty programs are available, ranging from large companies like Google and Facebook to [smaller startups](https://bugcrowd.com/rapyd-og). Research different programs and choose one that aligns with your interests and skill set.

**Follow the rules:** Each bug bounty program will have its own rules and guidelines for reporting vulnerabilities. Make sure you read and understand these rules before you start hunting, and follow them closely to ensure that your submissions are eligible for rewards.
Use the right tools: Many tools are available to help you with bug hunting, including vulnerability scanners, proxy tools, and automated scanners. Use these tools to help you identify potential vulnerabilities and streamline your workflow.

**Be persistent:** Bug hunting can be challenging and time-consuming, and staying motivated and persistent is important. Keep searching for vulnerabilities; keep going even if you don't find any immediately. With time and practice, you'll develop the skills and expertise needed to be a successful bug bounty hunter.

Bug bounty hunting can be a rewarding and lucrative career path for cybersecurity experts. By following these tips and best practices, you can start your bug-hunting journey and help make the digital world safer.
AWS CLI Installation - Ubuntu & Windows
Tags: aws, cloud, devops
Published: 2023-05-03 15:09:49

> In this article we will look how we can install AWS CLI on Ubuntu using Homebrew and in Windows using Scoop

## Ubuntu

Install some prerequisite packages

```bash
$ sudo apt update
```

```bash
$ sudo apt install build-essential procps curl file git
```

Install Homebrew using the provided convenience script

```bash
$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
```

Add Homebrew in our system PATH using the below commands

```bash
$ (echo; echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"') >> /home/ubuntu/.profile
```

```bash
$ eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
```

Verify the version and install the recommended gcc package

```bash
$ brew --version
Homebrew 4.0.15
```

```bash
$ brew install gcc
```

Turn off Homebrew anonymous aggregate user behavior analytics

```bash
$ brew analytics
Analytics are enabled.
```

```bash
$ brew analytics off
```

```bash
$ brew analytics
Analytics are disabled.
```

Install AWS CLI and verify its version

```bash
$ brew install awscli
```

```bash
$ aws --version
aws-cli/2.11.16 Python/3.11.3 Linux/5.10.16.3-microsoft-standard-WSL2 source/x86_64.ubuntu.22 prompt/off
```

## Windows

Open a Powershell terminal (version 5.1 or above) and execute the below commands to install Scoop

```bash
> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
```

```bash
> irm get.scoop.sh | iex
```

Install AWS CLI and verify its version

```bash
> scoop install aws
```

```bash
> aws --version
aws-cli/2.11.16 Python/3.11.3 Windows/10 exe/AMD64 prompt/off
```

## Reference

[https://brew.sh/](https://brew.sh/)

[https://scoop.sh/](https://scoop.sh/)
How Metaverse Technology is Revolutionizing the Tourism Industry
Tags: metaverse, metaverseintourism, metaversetechnology
Published: 2023-05-03 15:08:01



![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/o9bd75ygbx2t74bwhlzf.jpg)[Metaverse technology](https://www.digitaltreepost.com/metaverse-a-complete-guide-for-absolute-beginners/), also known as the virtual universe, has been gaining a lot of attention in recent years. It is a virtual space that allows users to interact with a computer-generated environment using virtual reality (VR) or augmented reality (AR) devices. While the technology was initially used for gaming, it is now being explored for its potential to revolutionize the tourism industry.

One of the most significant impacts of metaverse technology on tourism is the ability to offer [immersive travel experiences](https://www.digitaltreepost.com/can-metaverse-technology-change-the-traveling-industry/). With VR and AR devices, travelers can now explore destinations without physically being there. This is especially useful in situations where traveling may not be possible due to budget constraints, health issues, or political instability.

Metaverse technology also offers opportunities for businesses in the tourism industry to provide enhanced customer experiences. For instance, hotels can use VR to give guests a [virtual tour](https://www.digitaltreepost.com/can-metaverse-technology-change-the-traveling-industry/) of their properties before booking a room. Airlines can use AR to provide customers with a 360-degree view of the interior of their planes, making it easier for passengers to choose their seats.

Another way that metaverse technology is changing the [tourism industry](https://www.digitaltreepost.com/can-metaverse-technology-change-the-traveling-industry/) is through the creation of virtual destinations. Companies are now using metaverse technology to create virtual replicas of popular tourist destinations such as museums, historical landmarks, and theme parks. This allows travelers to experience these destinations virtually, which can help to generate interest and increase tourism.

Furthermore, [metaverse technology](https://www.digitaltreepost.com/metaverse-a-complete-guide-for-absolute-beginners/) is also making travel planning more convenient. Travelers can use VR and AR devices to explore destinations and plan their itineraries without having to leave their homes. They can also use the technology to book tickets, reserve hotels, and make other travel arrangements.

In conclusion, metaverse technology has the potential to revolutionize the tourism industry by offering immersive travel experiences, enhancing customer experiences, creating virtual destinations, and making travel planning more convenient. As the technology continues to evolve, it is likely to play an even bigger role in shaping the future of travel.