teleren/devto huggingface dataset:
Copying Arrays
Tags: java, programming, learning, beginners
Published: 2024-05-18 10:08:57

To copy the contents of one array into another, you have to copy the array’s individual elements into the other array. Often, in a program, you need to duplicate an array or a part of an array. In such cases you could attempt to use the assignment statement (**=**), as follows:

`list2 = list1;`

However, this statement does not copy the contents of the array referenced by **list1** to **list2**, but instead merely copies the reference value from **list1** to **list2**. After this statement, **list1** and **list2** reference the same array, as shown below. The array previously referenced by **list2** is no longer referenced; it becomes garbage, which will be automatically collected by the Java Virtual Machine (this process is called _garbage collection_).

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vumh7aktj31ing12fp15.png)

In Java, you can use assignment statements to copy primitive data type variables, but not arrays. Assigning one array variable to another array variable actually copies one reference to another and makes both variables point to the same memory location. There are three ways to copy arrays:

- Use a loop to copy individual elements one by one.
- Use the static **arraycopy** method in the **System** class.
- Use the **clone** method to copy arrays

You can write a loop to copy every element from the source array to the corresponding element in the target array. The following code, for instance, copies **sourceArray** to **targetArray** using a **for** loop.

`int[] sourceArray = {2, 3, 1, 5, 10};
int[] targetArray = new int[sourceArray.length];
for (int i = 0; i < sourceArray.length; i++) {
 targetArray[i] = sourceArray[i];
}`

Another approach is to use the **arraycopy** method in the **java.lang.System** class to copy arrays instead of using a loop. The syntax for **arraycopy** is:

`arraycopy(sourceArray, srcPos, targetArray, tarPos, length);`

The parameters **srcPos** and **tarPos** indicate the starting positions in **sourceArray** and **targetArray**, respectively. The number of elements copied from **sourceArray** to **targetArray** is indicated by **length**. For example, you can rewrite the loop using the following statement:

`System.arraycopy(sourceArray, 0, targetArray, 0, sourceArray.length);`

The **arraycopy** method does not allocate memory space for the target array. The target array must have already been created with its memory space allocated. After the copying takes place, **targetArray** and **sourceArray** have the same content but independent memory locations. The **arraycopy** method violates the Java naming convention. By convention, this method should be named **arrayCopy** (i.e., with an uppercase C).
Securing Next.js APIs with Firebase Authentication
Tags: nextjs, firebase, api, security
Published: 2024-05-18 10:00:21


At [itselftools.com](https://itselftools.com), we've gleaned substantial expertise from developing over 30 projects utilizing technologies like Next.js and Firebase. In this tutorial, we'll discuss how to leverage Firebase Authentication to secure your Next.js API endpoints. This setup is pivotal for any web application that requires user authentication before accessing certain resources.

## Understanding the Code Snippet

Here is a breakdown of what each part of the code provided does:

```typescript
import { NextApiRequest, NextApiResponse } from 'next';
import { getApp, initializeApp, getApps, cert } from 'firebase-admin/app';
import { getAuth } from 'firebase-admin/auth';
import serviceAccount from '../../serviceAccountKey.json';

if (getApps().length === 0) {
  initializeApp({ credential: cert(serviceAccount) });
}

export default async function verifyToken(req: NextApiRequest, res: NextApiResponse) {
  const { authorization } = req.headers;
  if (!authorization) {
    return res.status(400).json({ error: 'No authorization headers provided' });
  }

  const token = authorization.split(' ')[1];
  if (!token) {
    return res.status(401).json({ message: 'No token provided' });
  }

  try {
    const decodedToken = await getAuth().verifyIdToken(token);
    req.user = decodedToken;
    next();
  } catch (error) {
    res.status(403).json({ error: 'Invalid or expired token' });
  }
}
```

1. **Firebase Setup:** Initializes Firebase Admin SDK if it's not already initialized. This is crucial for server-side operations.
2. **API Endpoint:** The `verifyToken` function serves as an API endpoint within a Next.js application. It checks for the presence of an authorization header.
3. **Token Verification:** Extracts the token from the header, and uses Firebase to verify it. If the token is valid, it attaches the decoded information to the request, otherwise, it sends an error response.

## Use Cases

Such an API endpoint can be used in various scenarios, including but not limited to:

- Protecting sensitive endpoints that should only be accessible to authenticated users.
- Serving as a middleware for other APIs within your application, ensuring they are secure.

## Deployment Considerations

When deploying your application, ensure that `serviceAccountKey.json` is securely managed and not exposed publicly. Additionally, regularly update your Firebase Admin SDK and monitor for any authentication anomalies.

## Conclusion

Implementing Firebase Authentication within your Next.js applications is an effective strategy to enhance security. For a hands-on demonstration of this code in action, consider visiting some of our innovative solutions such as [free online video compression](https://video-compressor-online.com), [temporary email services](https://tempmailmax.com), and a [tool for finding adjectives](https://adjectives-for.com). These platforms utilize various forms of authentication and security measures to safeguard user interactions.
Linux pip install problems
Tags: pip, linux, python, fix
Published: 2024-05-18 09:56:54

I am not sure why this happens but each time i install a new linux system and i try to pip install a python library i am getting the following warning/error message:

```
error: externally-managed-environment
 
× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.
 
    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.
 
    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.
```
So if you are having the same problem, here is how to fix it:

First of all make sure you have Pip installed for your linux. Here i'll go with Ubuntu, you can change the command line according to your Linux system:

`
$ sudo apt update
$ sudo apt install python3-pip`

Now check to verify the installation of Pip:

`pip3 –version
`
You're ready to fix the problem for installing modules/librarires for Python. Type the following to your terminal:

```
$ python3 -m pip config set global.break-system-packages true
```
You can now install pip packages however use it carefully as there is always a chance to break your linux system!
The Saga Hotel, Green Park New Delhi
Tags: hotelsinnewdelhi, greenparkhotelinnewdelhi, hotelsinthesagahotelnewdelhi, hotelsnewdelhi
Published: 2024-05-18 09:56:48

Located in Green Park, New Delhi, [Saga Hotel](https://staybook.in/hotels/staybook-the-saga-hotel-new-delhi) is a luxury destination for travelers looking for comfort and convenience. Located in a bustling area, it offers a comfortable setting with modern amenities. The hotel welcomes guests with friendly staff and an inviting atmosphere. Each room is designed for comfort, with everything you need to be comfortable. From exploring nearby attractions to relaxing in luxurious suites, The Saga Hotel promises an enchanting experience for travelers visiting vibrant New Delhi


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xtjjz1628wwyv7yjcv48.jpg)


Guests can have lunch, breakfast, and dinner at the rooftop cafe with multiple options of Indian, Chinese, Mediterranean, Italian, and American food at the restaurant vegan options are also available and people can opt for halal is also available at the on request.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ghj3fe1z985zq3dc8le1.jpg)

The property also provides paid airport pick and drop facilities, the nearest airport is Indira Gandhi International Airport and the distance is 9.8 Kms from the property. New Delhi Railway Station is the closest railway station from the The Saga Hotel, Green Park New Delhi. Couples particularly like the location
Packers And Movers
Published: 2024-05-18 09:23:31

ITC Express Packers and Movers prioritizes quality and competence throughout their operations. They prioritize the safety and protection of their clients’ assets during the moving process by utilizing high-quality packing materials and using highly trained experts. Furthermore, ITC Express Packers and Movers maintains total openness and honesty, keeping clients informed at all phases of the relocation process. Whether you are moving across town or across the nation, ITC Express Packers and Movers is dedicated to providing excellent service and peace of mind to all of its loyal customers.
nov.kroshkadorozhka
Published: 2024-05-18 09:12:46

Хотите создать стильное, практичное и долговечное покрытие для вашей террасы или патио? [Покрытие из резиновой крошки](https://nov.kroshkadorozhka.ru/) от "Крошка Дорожка" - это идеальное решение! Оно устойчиво к воздействию влаги, ультрафиолетовых лучей и механических повреждений, что обеспечивает его длительную эксплуатацию в различных погодных условиях. Кроме того, резиновое покрытие создает приятную текстуру под ногами, обеспечивая комфорт и безопасность при ходьбе. Его также легко очищать и содержать в чистоте, что делает его идеальным выбором для зон активного использования на открытом воздухе.
Transform Your Smile At Best Dental Clinic Dumdum
Tags: devops, productivity
Published: 2024-05-18 09:03:56

As the [best dentist in Dumdum](https://smileydentalclinic.com/), I know that oral problems start early among many due to improper brush and floss practices. While your dental health is of paramount importance to us. I am happy to introduce one such rebellious innovation in the family dentistry of orthodontic treatment for you - a clear aligner.
So, are you losing confidence in sharing your beautiful smile?
Worry no more, as an eminent doctor of the best dental clinic in Dumdum. I will tell you the benefits of clear aligners instead of teeth brackets or metal braces. So that, you can radiate your extraordinary smile with super credence.
Why Should You Choose The Benefits Of Clear Aligners Over Traditional Braces During Your Dental Treatment Time?
Wearing traditional metal braces can be frightening, right? Especially, if you are in a public place or hanging out with your friends. I know, laughing your heart out wearing metal braces with archwires can be embarrassing for you.
While clear aligners function the same as metal braces. Yet, the invisible design of clear aligners does not have elastic bands that connect to the wire brackets. Thus, giving you the freedom of expressing your joy wholeheartedly.
Now that you know all about clear aligners. It is time for you to uncover the secretive benefits of choosing clear aligners over traditional
Conclusion
If you are seeking a flawless smile. Then, there is no better option than choosing the benefits of clear aligners for your teeth. You can also contact us for your dental problems on our website of Smiley Dental Clinic.
BitNest Loop promotion strategy and significance
Published: 2024-05-18 08:43:27

introduction
BitNest Loop is an innovative decentralized application (DApp) designed to provide users with efficient and secure decentralized financial (DeFi) services. In order to enhance its market influence and user base, it is crucial to develop an effective promotion strategy.

Promotion strategy
social media marketing

Target platforms: Twitter, Facebook, LinkedIn, Instagram
Content strategy: Publish BitNest Loop feature introduction, user cases and industry news to increase user interaction.
content marketing

Blogs and articles: Publish technology and market analysis articles on the official website and well-known blockchain media.
Video production: Publish tutorial videos and testimonial videos via YouTube.
Cooperation and alliances

Partners: Build partnerships with blockchain projects, cryptocurrency exchanges, and fintech companies.
Community cooperation: Participate in offline events and online seminars on blockchain and cryptocurrency.
User incentive plan

Referral rewards: Launch a user referral program to encourage existing users to recommend new users.
Usage rewards: Provide token rewards and transaction fee reductions to active users.
Education and training

Online courses: Develop online courses to teach blockchain and DeFi knowledge.
Seminars and lectures: Online and offline seminars and lectures are held regularly.
Promotional significance
raise popularity of brand

Increase BitNest Loop’s visibility in the blockchain and DeFi communities through multi-channel promotion.
Expand user base

Attract more users to register and use BitNest Loop, increasing platform activity and transaction volume.
Improve market competitiveness

Establish a competitive advantage in the DeFi market and seize more market share.
Promote technological innovation

Continuously improve and innovate BitNest Loop’s technology and services through user feedback and market demand.
Promote DeFi development

Promote the development of decentralized finance and provide more convenient and innovative financial services.
in conclusion
BitNest Loop’s promotion strategy is not only to expand its user base and market influence, but also to promote the development of decentralized finance. Through diversified promotion methods, BitNest Loop will play an important role in the blockchain and DeFi fields, providing users with safe, efficient and innovative financial services.



If you want to know about BitNest Loop, you can contact me via Telegram: https://t.me/Serena16890
Latest Newsletter: Black Death (Issue #164)
Tags: javascript, tech, webdev, discuss
Published: 2024-05-18 08:34:17

---
title: Latest Newsletter: Black Death (Issue #164)
published: true
description: Utopian futures & AI, open source crossroads, Deno & Ryan Dahl, attacks on Bitcoin & entrepreneurs, metabolism fundamentals and core metrics, current Bitcoin environment
tags: javascript, tech, webdev, discuss
---

Latest Newsletter: Black Death (Issue #164)

Utopian futures & AI, open source crossroads, Deno & Ryan Dahl, attacks on Bitcoin & entrepreneurs, metabolism fundamentals and core metrics, current Bitcoin environment

https://markjgsmith.substack.com/p/saturday-18th-may-2024-black-death

Would love to hear any comments and feedback you have.

[@markjgsmith](https://twitter.com/markjgsmith)
Easy Steps to Create Microsoft Azure Resource (hamburger menu)
Tags: azure, azureresources, resources, hamburger
Published: 2024-05-18 08:24:03

Following our initial [tutorial](https://dev.to/olawaleoloye/a-simple-guide-to-creating-microsoft-azure-resources-41pd)  in creating Azure resources, we are now exploring another method to achieve the same goal. 

To create any Microsoft Azure Resources, you can explore the following steps

1. **Navigate** to _www.portal.azure.com_ as seen in the image below.
![Navigate to Azure portal](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/jngwcf6g5wv63sqymoh6.png)
2. **Login** with your Microsoft account credentials (email, phone, or Skype details) by following  these steps:

- _**Input** your email or phone or Skype detail in the input field provided and  click the **Next** button_

- _**Input** your password in the password  field and click **Sign in** button_

![Email detail input](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/65apfc0jxp97ftvkfr08.png)
![Enter Password details](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3wjmrioanskfjlhhu2lc.png)
Azure offers a wide array of resources, each designed to serve distinct functions. The selection of Azure resources is driven by the specific solutions or services an organization seeks to implement. In this article, we will utilize the hamburger menu.

 _**Select**_ the **hamburger menu**, and click **Resource groups**.

![RG](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/b17v07chj52n8gtdw9t4.png)

_**Select**_ **Create**

![create](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/yw39qpslt6w1xj5idt2v.png)

_**Enter**_ the **name** of the resource group

![name RG](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/oshzz3c1494w8jt5fmmy.png)
_**Select**_ **Review + create** at the bottom of the page


![Review and create](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ocgqeqgfukjk66kp7ixj.png)

5. Now, _**click**_ **create**! Boohay 🎊
![select create](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/jxg9855cnymueat0yyxq.png)

![created](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/kannrlnfp5wmor90allv.png)

#####To learn more, follow me on[ ![Icon linking X accont](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/2kwudz2uqes2kgs76k7w.png)](https://twitter.com/Olawale_Oloye)
How to create an interactive testimonial with Astrojs, Tailwind CSS and JavaScript
Tags: webdev, tutorial, tailwindcss, javascript
Published: 2024-05-18 08:20:00

Recreating a testimonial section with Tailwind CSS and JavaScript that we did with Alpine.js in the previous tutorial.

[Read the article, See it live and get the code](https://lexingtonthemes.com/tutorials/how-to-create-an-interactive-testimonial-with-astro-tailwind-css-and-javascript/)
React Native Bridge for Android and Ios
Tags: reactnative
Published: 2020-03-13 12:58:25

React Native is developed in such a way that we can create a bridge between the Native Language and the JavaScript code. A bridge is nothing but a way to setup communication between native platform and React Native.

But why do we need it?

Let’s assume you want to reuse some existing Java code or library without having to reimplement it in JavaScript. Yes, you guessed it right, you can use it in your React Native application with the help of Native Bridge. At some point of time, to make a production-level application you will most probably need to use Native Bridge.

“As long as we are building our application purely within the framework, we can drive our app with properties and callbacks. But, when we mix React Native and native components, we need some specific, cross-language mechanisms that would allow us to pass information between them.”

You have to learn two modules
1. Native Modules
2. Native UI Components 

<B>Native Modules</B>
A Native Module is just a set of javascript functions that are implemented natively for individual platform. Native Modules are used when React Native doesn’t have that required module yet, or when the native performance is significantly better.

To understand this concept better we will implement a toast mechanism in which the toast would be coming from the native android and we will call it from a button made in React Native. In case you are wondering “what a toast is?”, think of it as an alert message for your app.

<B>Native UI Components</B>

There are tons of native UI widgets out there ready to be used in the latest apps. Fortunately, we can wrap up these existing components for seamless integration with our React Native application. Without further ado, let’s head over to the practical part.

You can see there are two types of bridge.
1. <a href="https://codersera.com/blog/react-native-bridge-for-android/">Native Bridge for Android</a>
2. <a href="https://codersera.com/blog/react-native-bridge-for-ios/">Native Bridge for Ios</a>
[DAY 2] Playing Around With HTML & CSS
Tags: beginners, learning, html, css
Published: 2024-05-18 08:11:15

Today, my agenda revolves around playing with the code I wrote yesterday. It's a crucial step in solidifying my grasp of HTML and CSS, consolidating the knowledge I've learned thus far.

Throughout the day, I've encountered a few hurdles: Firstly, I want to center the images on my webpage. Then, there was the challenge of aligning texts and images seamlessly on the same line. Lastly, I want to crop my images using code to match my desired visuals.

To overcome these obstacles, I devised some solutions: For centering the images, I opted to display them as blocks and set their margins to "auto" in CSS. To align texts and images side by side, I utilized the span element in HTML. Unfortunately, due to time constraints—I limit my coding endeavors to a disciplined 2-3 hours per day—I couldn't delve into image cropping. However, it remains on my agenda for tomorrow, as I strive to refine the aesthetic of my banner.

Today, I fiddled around with my webpage, experimenting with HTML and CSS. I visualized a simple layout that I want my webpage to look and then I challenged myself to code it into reality, relying on both my existing knowledge and the occasional guidance from Google. This approach helps with independence and sharpens my problem-solving skills as I learn to tackle queries on my own.
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/yf1xre055q9mwvarpjc2.PNG)![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/616hdywpx4hlbrsomg3l.PNG)
Reflecting on my coding journey, I acknowledge a tendency towards disorganization—I often leave tutorial videos unfinished, opting instead to dive straight into the text editor.

Yet, amidst the chaos, I realized that every line of messy code represents a step forward in my learning journey. As long as my code functions and achieves the desired aesthetic, its untidy appearance is fine. Besides, every beginner starts with something, and that's good enough to me.