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Learn all about data structures used in computer science

A data structure is a way of organizing data so that the data can be easily accessed or updated. There are many common data structures used in computer programming and it is important for programmers to know about them. We've released a video course on the freeCodeCamp.org YouTube channel

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The Least Squares Regression Method – How to Find the Line of Best Fit

Would you like to know how to predict the future with a simple formula and some data? There are multiple ways to tackle the problem of attempting to predict the future. But we're going to look into the theory of how we could do it with the formula Y = a

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Fresh Resources for Web Designers and Developers (September 2020)

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How Old Computer Advertisements Look Like

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JavaScript String Format – How to use String Interpolation in JS

The addition of template literals in ECMAScript 6 (ES6) allows us to interpolate strings in JavaScript. In simpler words, we can use placeholders to inject variables into a string. You can see an example of string interpolation using template literals in the snippet below: const age = 4.5; const earthAge

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Jetpack 8.9: Take Donations, Capture Email Subscribers, AMP integration, and More

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RSync Examples – Rsync Options and How to Copy Files Over SSH

Rsync (Remote Synchronization) is a fast, versatile, remote (and local) file transfer tool. In this article, we will look at how to work with rsync.

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One Action, Multiple Terminal Windows Running Stuff

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How to Launch Sublime Text on Windows from Git Bash

If you have been trying to figure out how to open the Sublime Text editor from your Git bash, then you're in luck. This article will guide you through the process with little or no stress. It took me a while to figure out how it's done, but now I

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AVIF has landed

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Agile Methods and Methodology for Beginners – Agile Software Development and Agile Project Management Examples

Agile is a methodology for approaching software development. It consists of different frameworks such as SCRUM or Kanban that help development teams continuously build, test, and gather feedback on their product. Agile consists of four core principles: Individuals and interactions over processes and toolsWorking software over comprehensive documentationCustomer collaboration over

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How I Built My One-Person Project: A Chess Engine for a Popular Game Dev Engine

What I learned from working solo on an open-source chess engine integrating Ren'Py (GitHub 2k stars) and python-chess (GitHub 1.1 stars)

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How to Use Redux in Your React TypeScript App

Redux is a predictable state container for JavaScript apps. It's a popular library for managing state in React apps. Redux can offer a better developer experience when you use it along with TypeScript. TypeScript is a superset of JavaScript that type-checks code to make it robust and understandable. In this

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What Are Terraform Modules and How Do They Work?

Surprisingly, a lot of beginners skip over Terraform modules for the sake of simplicity, or so they think. Later, they find themselves going through hundreds of lines of configuration code. I assume you already know some of the basics about Terraform, and have even tried to use it before. If

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Jetpack Compose Animations Tutorial: Getting Started [FREE]

In this tutorial, you’ll build beautiful animations with Jetpack Compose Animations, and discover the API that lets you build these animations easily.

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How to Design a Transactional Key-value Store in Go

If you want to design an interactive shell that allows access to a transactional in-memory key/value store, then you're in the right place. Let's Go together and design one now. BackstorySystem design questions have always interested me because they let you be creative. Recently I read Uduak's blog where

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How CSS Perspective Works

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Unreal Engine Course - Create a 2D Snake Game

Unreal Engine is one of the most popular game developent platforms and it is completely free to use. When people think of Unreal Engine, they often think of 3D games. But it can also create 2D games. We released a full 2.5 hour Unreal Engine course on the freeCodeCamp.

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13 JavaScript Libraries to Create Interactive and Customized Maps

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How to Build a Quiz App Using React –with Tips and Starter Code

In this beginner React tutorial we're going to build a quiz app. We'll work with complex state objects, how to handle different state hooks, and render things based on state. Check it out: Try it yourself If you want to have a go yourself first, here are the scenarios (you

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The Ethical Hacking Lifecycle — Five Stages Of A Penetration Test

Penetration testing is the process of exploiting an organization’s network to help defend it better. Here are five steps involved in a successful penetration test.

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