teleren/devto huggingface dataset:
Dynamic Components In Vue
Tags: javascript, vue, beginners
Published: 2023-11-09 04:35:52

Dynamic components allow you to switch between different components based on a condition without using multiple conditional statements. To create a dynamic component, use the reserved <component> tag with the 'is' attribute.

```
<component v-bind:is="currentComponent"></component>
```

In your Vue.js instance, you can update the value of 'currentComponent' to switch between components.

```
new Vue({
  el: '#app',
  data: {
    currentComponent: 'component-a'
  },
  components: {
    'component-a': ComponentA,
    'component-b': ComponentB
  }
});
```
Angular Performance Optimization Strategies During Angular App Migration
Tags: angular, application, migration
Published: 2023-11-09 04:31:35

We all are aware that Angular is one of the popular JavaScript frameworks for building web applications, and once the applications grow along with that complexity level, performance optimization becomes crucial as well. Day by day managing an application becomes a task and especially when migrating an existing Angular app or building a new one, it is very important to implement various Angular Performance Optimization strategies to make sure that the app runs smoothly and efficiently. 

In this blog, we will explore several Angular performance optimization strategies during app migration in a detailed manner.

####Lazy Loading Modules:
Lazy loading includes loading various modules on-demand, rather than loading the entire application at once. It significantly reduces the initial loading time and improves the overall performance. When migrating, identify which modules can be lazily loaded, especially those that are not required for the initial page load.

####AOT Compilation:
AOT compilation converts all the Angular templates and components into highly optimized JavaScript during build time. This results in smaller bundle sizes and faster rendering, as there is no need for the runtime compiler. Make sure to enable AOT compilation during the migration process.

####Tree Shaking:
Tree shaking is one of the technique used to eliminate unused code from your application. During migration, ensure that your build process is set up to remove dead code and only include the necessary parts of your application. This reduces the bundle size and improves load times.

####Code Splitting:
Code splitting involves breaking your application code into smaller chunks that are loaded only when needed. Tools like Angular CLI and Webpack allow you to configure code splitting, which can significantly improve the app's initial load time.

####Optimized Images and Assets:
Images and assets can be a significant contributor to slow page loading. During migration [Angularjs developer](https://www.bacancytechnology.com/angular-js-development) optimize images and assets by compressing them, using modern image formats (e.g., WebP), and loading them lazily to reduce initial load times.



##Conclusion

In conclusion, we can say that a [guide to Angular Performance Optimization](https://www.bacancytechnology.com/blog/angular-performance-optimization) during migration is very much crucial for delivering a fast, responsive, and user-friendly experience. These strategies mentioned above if applied effectively can significantly enhance your application's performance and ensure a seamless transition during the migration process. It regularly reviews and updates your performance optimization techniques to keep your Angular app running at its best.
How to Get Data by ID Using API Maker 🚀
Tags: api, backend, backenddevelopment, apimaker
Published: 2023-11-09 03:50:47

✔ If you are looking for a fast and easy way to get data by ID from any database using a single API, you should check out API Maker.

✔ You can also use feature of deep populate and get data from different database types and get in only one API call also.

Simple get by id
`/api/gen/user-path/instance/database/table/get-by-id/1`

Select data
`/api/gen/user-path/instance/database/table/get-by-id/1?select=first_name,last_name`

Deep data
`/api/gen/user-path/instance/database/table/get-by-id/1?deep=[{s_key:'customer_id',t_col: 'products',t_key:'owner_id'}]`

👉 API Maker can generate APIs for 8 different databases, such as MongoDB, MySQL, PostgreSQL, Oracle, SQL Server, TiDB, Percona XtraDB, and Redis.

👉 You can query data by ID from any of these databases with ease and flexibility using the get by id API.

👉 The get by id API is a simple and efficient API that allows you to get data by ID from any table in any database.

👉 You only need to provide two parameters: id. You can provide primaryKey if you want to override default primary key value in the API call.

👉 The id is the value of the primary key of the table that you want to query.

👉 The primaryKey is the name of the primary key column of the table that you want to query.

👉 The get by id API will return a single document or row that matches the id and primaryKey values.

⭐ To use the get by id API, you need two main things:

👉 The URL of the API request.

👉 A well-defined table schema that describes the structure and properties of each table.


https://apimaker.dev/

https://docs.apimaker.dev/

https://youtu.be/mrTH2GyYKsQ?si=crEO5bsNBwYqPN0t

https://www.youtube.com/@api_maker
Kufun - Nhà Cái Đổi Thưởng Trực Tuyến Số 1 Việt Nam
Published: 2023-11-09 03:40:18

Kufun chính thức xuất hiện trên thị trường cá cược trực tuyến Việt Nam vào năm 2021, nhà cái đã nhanh chóng thể hiện được sức hút mạnh mẽ của mình.
Địa Chỉ: 30 Nguyễn Hậu, Tân Thành, Tân Phú, Thành phố Hồ Chí Minh, Việt Nam
Email: kufun68online@gmail.com
Website: https://kufun68.online/
Điện Thoại: (+63) 945 307 7395
#kufun #kufun68 #nhacaikufun #kufunuytin

Social Links:

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Automate Your Dev Setup With Ansible
Tags: ansible, devops, development, programming
Published: 2023-11-09 03:33:54

After weeks of research, you finally unbox your new computer and start setting it up. It boots, you install your OS, and then the magic happens! Except, it doesn't. You still need to install all of your software. As fast as your new SSD, your excitement is replaced with dread...

This article will not teach you how to use Ansible or write playbooks. Rather, I aim to inspire you to automate your environment setup and think about other ways to increase productivity and decrease brain cycles spent on insignificant things.

## What Is Ansible?
Ansible is an open-source tool for configuration management commonly used in cloud environments. It uses yaml to specify the desired end state of a system declaratively. 

## The Problem Ansible Solves
If you're like me, you program in multiple languages and thus need numerous environments. You also need the environments to be consistent across machines. Manually installing everything can be an error-prone slog and cuts into precious time you could use for anything else. Instead, consider writing an Ansible playbook to do it for you.

### Playbook Ideas
- Install and configure node/npm
- Install python
- Configure git with your username, email, and SSH keys
- Clone your personal project repos from Github

## Takeaway
Consider spending a few hours now to save countless hours on installing and configuring software. Automating your environment with Ansible isn't something flashy and exciting, but it will free up precious time and allow you to focus on the code.
Front-end vs. Back-end Engineering/Development: A Comparative Analysis
Published: 2023-11-09 03:19:05

1.0: Introduction

Front-end and Back-end are two fundamental aspects of web development, each playing a critical role in creating user-friendly websites and applications. I intend to provide an in-depth comparison of both, highlighting their key differences, and their respective technologies associated with each.

1.1: Front-end Development

Also known as Client-Side, focuses on the visible and interactive aspects of a website/application that users interact with. Its engineers are responsible for creating the user interface(UI), thus ensuring a responsive and engaging design, and optimizing the user experience.

1.2: Features

UI Design - Front-end developers work closely with designers to implement the visual aspects of a website, such as layout, typography, colors, and responsive design.

HTML, CSS, and JavaScript - These are the main technologies used in the front-end. HTML provides the structure, CSS handles styling, and JS adds interactivity and functionality to websites.

Cross-Browser Compatibility - Front-end needs to make sure that the website/application functions consistently across different web browsers and devices.

User Experience (UX) Optimization- Engineers aim to create intuitive and user-friendly interfaces, improving navigation and accessibility.
Front-end frameworks - For example, React, Angular, and Vue.js are used to streamline front-end development and enhance productivity.

2.0: Back-end Engineering

Also known as Server-side, deals with the behind-the-scenes functionality of a website/application. Engineers focus on managing data, processing requests, and ensuring the security and performance of the system.

2.1: Features

Languages - Developers work with server-side languages like Python, Ruby, Java, Php, and Node.js so as to handle data processing, authentication, and server management.
Database Management - Storing and retrieving data efficiently is a critical aspect of back-end development. For example MySQL, MongoDB

API Development - Engineers design and develop Application Programming Interfaces to enable communication between the front-end and back-end, more often using REST or GraphQL.

Security - Ensuring data security, user authentication, and protection against threats like SQL injection and Cross-Site Scripting is a top priority for back-end developers.

Scalability and Performance- Engineers need to optimize the server infrastructure to handle high traffic and maintain performance.

In summary, front-end and back-end development are two interconnected but distinct disciplines within web development. Front-end engineering deals with the visible and interactive elements that users directly engage with, while back-end engineering handles the server-side processing, data management, and security aspects.

Successful web development projects require collaboration between both developers so as to create seamless secure, and efficient web applications.
Navigating Unit Testing in React: Your Questions Answered
Tags: react, testing, javascript, beginners
Published: 2023-11-09 02:53:53

Unit testing is a key part of React development, providing a safety net for your application. Here, we answer common questions to clarify best practices and approaches to unit testing with React and Jest.

**What is the Jest Testing Framework?**
Jest is a delightful JavaScript Testing Framework with a focus on simplicity. It works out of the box for any React project with zero configuration. It provides global methods such as `it` to declare tests, `describe` to group tests, and `expect` to make assertions.

**How Do You Organize Tests in React?**
Tests in React are typically organized in separate files next to the components they are testing, with `.test.js` or `.spec.js` suffixes. This convention is intuitive and helps maintain a clear separation between production and test code.

**Do You Need to Import `it` from Jest?**
No, `it` is a global function provided by Jest and does not need to be imported in your test files. Jest's runtime automatically provides it, along with other globals like `describe` and `expect`.

**Are Test Files Included in the Production Build?**
No, test files are not included in the production build. When creating a production bundle, tools like Webpack or Parcel only include the files that are actually imported by your application entry points, effectively excluding test files.

**Should Tests Be Written in `.test.js` Files?**
Yes, writing tests in `.test.js` or `.spec.js` files is a standard practice. It helps test runners like Jest to easily identify and execute test suites while keeping them separate from production code.

**Is Using `try` in Tests Recommended?**
Generally, no. Jest is designed to handle exceptions without the need for `try` blocks. If you're expecting an error, Jest's `toThrow` matcher is the preferred way to assert that. However, `try/catch` in tests can be used for special cases where you need to perform additional error handling or assertions.

Unit testing with Jest in React might seem daunting at first, but understanding these fundamentals can demystify the process. By following best practices and leveraging Jest's built-in features, you can write effective tests that bolster your application's reliability and maintainability.

Remember, a well-tested application is a robust one. So, keep these tips in mind as you write your next React component and its tests, and you'll be on your way to a more stable and dependable codebase.

By integrating these principles into your workflow, you can ensure that your React components are not only functional but also resilient against changes and errors. Happy testing!

{% cta https://github.com/webcrumbs-community/webcrumbs %} Learn about WebCrumbs {% endcta %}

{% cta https://webcrumbs.org %} Join the community {% endcta %}
Your Key, Your Crypto: Retrieving Your Wallet Address from a Private Key Using JavaScript and Web3.js
Published: 2023-11-09 02:51:07

Alice was an astute investor who had the foresight to invest in cryptocurrency during its nascence, understanding its potential to yield significant returns. In a move to ensure absolute security, she wrote down her private key on paper, choosing not to rely on any digital wallet services. However, after stepping away from the market during a bearish phase, she returned to find the ink on her paper fading. The rush to recover her investments led her to her parent's house, where a legible copy of her private key lay safe. Yet, despite having the key, she faced another challenge: she had never stored her wallet address and now needed a secure way to retrieve it without compromising her privacy.

This article is tailored for developers looking to assist investors like Alice. It aims to provide a robust method for converting a private key into a wallet address within the safety of a local environment, circumventing the risks associated with online tools. We'll delve into a technical solution that ensures Alice can access her wallet address securely, reaffirming her decision to maintain privacy and control over her crypto assets. Join us as we explore a developer-centric approach to bridging the gap between a private key and its corresponding wallet address, ensuring peace of mind for the security-conscious investor.

The process of converting a private key to a wallet address is not just about running a script; it's about understanding the security implications and the mechanics of blockchain technology.


## The Code

```
import Web3 from "web3";

const web3 = new Web3();
const account = web3.eth.accounts.privateKeyToAccount("<PRIVATE_KEY>");
console.log("Account Address:", account.address);
```

In essence, these lines will take the private key as input, generate the corresponding public key, and then derive the wallet address from this public key through a series of cryptographic transformations.

## Keeping it Safe

When you use your private key to find your wallet address, make sure to do it safely. Do it on your own computer or use an online tool you know is safe. Keep your private key a secret and store it in a safe place after you're done.

## Wrapping Up

To sum it up, turning a private key into a wallet address is something you can do safely on your own. Over at [DevWeb3.co](https://devweb3.co), we have a tool to help you do this without risking your private information. Also, other helpful things like an online editor for your solidity development. Remember, it's all about keeping your crypto safe and sound.
Take Control of Your Crypto: Creating Your Wallet with JavaScript
Tags: web3, javascript, cryptocurrency, programming
Published: 2023-11-09 02:11:12

In the world of cryptocurrencies, having a secure place to store your digital assets is paramount. Many newcomers to the crypto space start by leaving their funds on centralized exchanges. While this may seem convenient at first, it presents a significant risk. Centralized platforms can be vulnerable to hacks and bankruptcies, and you’re not in full control of your crypto assets. The solution? Create your own wallet using some JavaScript, web3.js in your local environment.

## Why Create Your Own Wallet?
Creating your own wallet doesn’t just enhance security; it empowers you. With a self-created wallet, you have:

Full Control: Only you have access to your funds.
Privacy: Your identity and transactions are not tied to an exchange.
Direct Interaction with DApps: Engage with decentralized applications without intermediaries.
Reduced Risk: No centralized point of failure that hackers can target. (Assuming you don’t have any malware installed on your computer)

## How Easy Is It?
You might think that setting up a wallet is a technical challenge, but web3.js has simplified the process. This JavaScript library interacts with the Ethereum blockchain and makes it straightforward to create a secure wallet. Here’s what you’ll need:

- A computer
- A basic understanding of JavaScript
- The web3.js library

In the following sections, we’ll provide a coding example to guide you through the process.

## The Risks of Self-Custody
While creating your own wallet with web3.js gives you control, it also comes with responsibility. The most critical aspect is the safekeeping of your private key. Losing access to your private key means losing access to your crypto, with no way to recover it. It’s essential to store your key securely, such as by using a hardware wallet or a secure password manager, and to have multiple backups in different locations.

Creating Your Wallet using 2 lines of code:
```
const web3 = new Web3();
const wallet = web3.eth.accounts.create();
console.log("Your new wallet address:", wallet.address);
console.log("Private Key:", wallet.privateKey);
```

## This wallet in MetaMask
In addition to creating a wallet, you have the flexibility to import and manage it using MetaMask. This can be useful if you are creating a new token and need to follow the balance and transfer some to test it.

## Ready to Dive In?
If you’re ready to take the leap and create your own wallet, you can start experimenting today. [DevWeb3.co](https://devweb3.co) is an excellent resource for anyone looking to step into the world of decentralized wallets. They offer access to faucets, so you can obtain coins to test out smart contracts without risking your own funds.

Remember, with great power comes great responsibility. Secure your keys, and embark on your journey towards true financial autonomy.
Operations With Time Types in a Database
Published: 2023-11-09 02:47:20

## Addition and Subtraction of Days, Months, and Years

In Oracle, when dealing with date types, you can directly add or subtract days. However, when it comes to manipulating months, you would use the add_months function:

```
SQL> SELECT hiredate AS Hire Date,
          hiredate - 5 AS Minus 5 Days,
          hiredate + 5 AS Plus 5 Days,
          add_months(hiredate, -5) AS Minus 5 Months,
          add_months(hiredate, 5) AS Plus 5 Months,
          add_months(hiredate, -5 * 12) AS Minus 5 Years,
          add_months(hiredate, 5 * 12) AS Plus 5 Years
     FROM emp
     WHERE ROWNUM <= 1; 
```


## Addition and Subtraction of Hours, Minutes, and Seconds

```
SQL> SELECT hiredate AS Hire Date,
           hiredate - 5 / 24 / 60 / 60 AS Minus 5 Seconds,
           hiredate + 5 / 24 / 60 / 60 AS Plus 5 Seconds,
           hiredate - 5 / 24 / 60 AS Minus 5 Minutes,
           hiredate + 5 / 24 / 60 AS Plus 5 Minutes,
           hiredate - 5 / 24 AS Minus 5 Hours,
           hiredate + 5 / 24 AS Plus 5 Hours
      FROM emp
     WHERE ROWNUM <= 1;
```


## Time Intervals in Hours, Minutes, and Seconds

```
SQL> SELECT Interval_Days,
           Interval_Days * 24 AS Interval_Hours,
           Interval_Days * 24 * 60 AS Interval_Minutes,
           Interval_Days * 24 * 60 * 60 AS Interval_Seconds
    FROM( SELECT MAX(hiredate) - MIN(hiredate) AS Interval_Days
    FROM emp
    WHERE ename IN ('WARD','ALLEN'))X;
```


## Time Intervals in Days, Months, and Years

```
SQL> SELECT max_hd - min_hd AS Days_Interval,
           months_between(max_hd, min_hd) AS Months_Interval,
           months_between(max_hd, min_hd) / 12 AS Years_Interval
      FROM (SELECT min(hiredate) as min_hd, MAX(hiredate) as max_hd FROM emp) x;
```
A brief history of chart
Tags: programming, datavisualization, chart, history
Published: 2023-11-09 02:34:10

A brief history of chart,mabe by [VisActor](https://visactor.io)

ReadMore:[VisActor — Narrative-oriented Intelligent Visualization Solution](https://dev.to/xuanhun/visactor-narrative-oriented-intelligent-visualization-solution-178h)
How Do I Build LLava AI ChatBot
Tags: datascience, ai, programming, machinelearning
Published: 2023-11-09 01:58:23

In this article, we are going to build a chat with your Image application using LLava and Replicate. Whether you are a beginner or an experienced programmer, I am going to explain every step in detail to deliver the information.
1. Get a Replicate API token
2. Set up the coding environment
3. Build the app
4. Add file uploader for images
5. Create the LLM response generation function
6. Add, display, and clear chat messages
7. Accept prompt input
8. Generate a new LLM response
Congratulations! That is all it takes to make a llava chatbot using Streamlit and replicate.

This article was originally published on: [Page](https://quickaitutorial.com/)
[Javascript] - Arrays
Tags: javascript, node
Published: 2023-11-09 01:58:19

An object, {}, can look like an array, e.g.

const x = {}
x[0] = 1 // works
console.log(x[0]) // works
console.log(x.0) // doesn't work
const [first] = x // doesn't work, non-iterable object

For example, arrays are by default converted(auto-coercion allowed, means signal “==“ ) to strings by simply joining all the values ​​with commas (,) between them. You might think that two arrays with the same content are equal ==, when in fact they are not:

var a = [1,2,3];
var b = [1,2,3];
var c = "1,2,3";

a == c; // true
b == c; // true
a == b; // false
Today I learned-The cookies hash
Published: 2023-11-09 00:58:54

One feature of HTTP requests is that the server stores a set of key-value pairs in the client, which is known as cookies. We can set access to cookies in Sinatra and Rails. We can use hash methods like .keys and .fetch with the cookies hash. Signing in a user is the most important thing that we use the cookies hash for. Only strings can be stored in the cookies hash.