development

How To Install and Use Composer on Ubuntu 20.04

How To Install and Use Composer on Ubuntu 20.04

Composer is a dependency manager for PHP, allowing you to manage your project's libraries and packages effortlessly. If you're developing PHP applications, Composer is an essential tool. This guide will show you how to install and use Composer on Ubuntu 20.04. Prerequisites Before you start, make sure you have the following: An Ubuntu 20.04 server. A user with sudo privileges. PHP installed on your server. If PHP is not installed, you can do so by running: sudo apt update sudo apt install php-cli unzip Step 1: Install Composer 1.1 Update Your Package Manager First, update the package manager cache: sudo…
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Angular vs React js Prop Passing

Angular vs React js Prop Passing

Prop Passing in React Parent Component: import React from 'react'; import ChildComponent from './ChildComponent'; class ParentComponent extends React.Component { render() { const message = "Hello from Parent!"; return ( <div> <h1>Parent Component</h1> <ChildComponent message={message} /> </div> ); } } export default ParentComponent; Enter fullscreen mode Exit fullscreen mode Child Component: import React from 'react'; class ChildComponent extends React.Component { render() { return ( <div> <h2>Child Component</h2> <p>{this.props.message}</p> </div> ); } } export default ChildComponent; Enter fullscreen mode Exit fullscreen mode Advantages of Prop Passing in React Challenges of Prop Passing in React Prop Drilling: In larger applications, passing props through…
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How To Create a Virtual ATM Card using Plain HTML & CSS

How To Create a Virtual ATM Card using Plain HTML & CSS

Imagine at your disposal, you only have a picture of the Master Card Logo and another picture of the ATM card chip, you are tasked to create a visually appealing ATM card from the two separate pictures. You are about to find out how powerful CSS and HTML are. The Tech space is ever-changing but understanding these two languages is crucial for any aspiring Front-End developer. This article will guide you on how to make the front and back sides of an ATM card from scratch. The card will flip to the back or front sides when hovered over. We…
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Building a CRUD Application with Node.js, Express, and MySQL

Building a CRUD Application with Node.js, Express, and MySQL

In this blog, we'll walk through creating a simple CRUD (Create, Read, Update, Delete) application using Node.js, Express, and MySQL. This tutorial will guide you through setting up the project, configuring the database, and implementing the CRUD operations. Project Setup Step 1: Initializing the Project Create a new directory for your project and initialize it with npm: mkdir crud-nodejs cd crud-nodejs npm init -y Enter fullscreen mode Exit fullscreen mode Install the necessary dependencies: npm install express mysql2 dotenv body-parser npm install --save-dev nodemon Enter fullscreen mode Exit fullscreen mode Step 2: Project Structure Create the following project structure: crud-nodejs…
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Diabetes Prediction Bot

Diabetes Prediction Bot

Overview:The "Diabetes Prediction Bot" is a machine learning-based software application designed to predict whether an individual is likely to have diabetes. Users can provide relevant medical and lifestyle data, and the bot analyzes this information to provide a predictive outcome. This tool is useful for early detection and risk assessment of diabetes, allowing individuals to take preventive measures and seek medical advice when necessary. Files: trained_model.sav: This file contains the trained machine learning model for diabetes prediction. Diabetes-Prediction-bot deployment in Spyder.py: This Python script is used for deploying the Diabetes Prediction Bot in the Spyder IDE and running it using…
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Understanding Microservices Architecture

Understanding Microservices Architecture

Introduction: Microservices architecture is gaining popularity among businesses as it provides several advantages over traditional monolithic architecture. It is an architectural style that breaks down a large software system into small, independent, and modular services, each with its own specific function. These services communicate with each other through well-defined APIs and can be deployed and managed independently. In this article, we will dive into the understanding of microservices architecture, its advantages, disadvantages, and key features. Advantages: Scalability: Microservices allow for easier scalability as each service can be scaled independently based on its usage and demand. Flexibility: This architecture allows for…
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The BigInteger and BigDecimal Classes

The BigInteger and BigDecimal Classes

The BigInteger and BigDecimal classes can be used to represent integers or decimal numbers of any size and precision. If you need to compute with very large integers or high-precision floating-point values, you can use the BigInteger and BigDecimal classes in the java.math package. Both are immutable. The largest integer of the long type is Long.MAX_VALUE (i.e., 9223372036854775807). An instance of BigInteger can represent an integer of any size. You can use new BigInteger(String) and new BigDecimal(String) to create an instance of BigInteger and BigDecimal, use the add, subtract, multiply, divide, and remainder methods to perform arithmetic operations, and use…
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[WIP] Test UI?

[WIP] Test UI?

There are different solutions on test UI Jest unit testing Jest Snapshots Integration testing Image comparison testing Accessibility reports Manual testing When to us what? In my experience a big project will end up using all of them. Let start with the first Jest unit testing Unit testing is a type of software testing that focuses on individual units or components of a software system. Nice... but let also mention that: we want to test behavior and not implementation The goal is I can change 100% the implementation and the test will still pass How? the style is called "Black…
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Top Smart Contract Languages in 2024: Solidity, Rust, Motoko

Top Smart Contract Languages in 2024: Solidity, Rust, Motoko

Welcome to Dapp Mentors! In this article, we'll delve into the top three programming languages for blockchain development: Solidity, Rust, and Motoko. As a seasoned blockchain developer and educator, I'll share my expertise to help you transition into web3 development. You can watch this article as a video below or continue reading through it. Solidity: The FavoriteSolidity is our top choice due to its simplicity, ease of use, and wide community support. It's the most widely used language for blockchain development, and its simplicity makes it an excellent choice for beginners. However, it has limitations: Scalability: Solidity is not very…
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