Large-Language Models like ChatGPT can be helpful, but they face various issues. For example, models can make up info based on patterns from training data. Here, you'll learn how RAG helps solve this problem by using LlamaIndex to build a RAG pipeline. freecodecamp.org/news/how-to-bu…

Java is a popular & well-established programming language with tons of different use cases. And Vahe Aslanyan wrote this book to help you learn it. He teaches data types, variables, operators, and Object-Oriented Programming, plus more advanced topics. freecodecamp.org/news/learn-jav…

When you're learning Python, it helps to write lots of Python code. So here, Abhilekh Gautam shares 8 beginner-friendly Python coding challenges. You'll learn how to check if a list is sorted, convert binary to decimal, solve the Caesar Cipher, & more. freecodecamp.org/news/python-co…

Type aliases are a powerful feature in TypeScript. They let you create custom names for types, which helps make your code more maintainable & readable. In this guide, Sahil explains how type aliases work & shows some examples you can try out. freecodecamp.org/news/how-types…

In JavaScript, the "this" keyword is an important but tricky concept. It's a reference to an object, but the object varies based on where & how it's called. In this guide, @kamaldeenlawal explains how "this" + the call(), apply(), & bind() methods work. freecodecamp.org/news/the-javas…

The freeCodeCamp community just hit a new milestone in open source: 400,000 ⭐️s on GitHub. It's taken nearly 10 years of work to get here. To each of you 5,449 kind developers who have contributed to our codebase so far: thank you! 🏕️

As your React apps become more complex, managing updates to the UI becomes more challenging. This is where the Virtual DOM can help. In this article Mateush explains how the Virtual DOM works, why it's useful, how it compares to the Shadow DOM, & more. freecodecamp.org/news/what-is-t…

If you're into system design, low-level programming, or network protocols, this course is for you. Anthony walks you through building a decentralized file storage system using Go. You'll build a library, develop peer communication interfaces, and more. freecodecamp.org/news/learn-how…

If you're a front-end dev, you'll need to know how to handle data in your apps. For example, fetching data from an API, manipulating it, & showing it on the screen. In this guide, Juliet💫 shows you how to use JSON Server for front-end development. freecodecamp.org/news/json-serv…

Databases are a key component of many apps – you need a safe place to put all your data, right? Well, this guide will introduce you to DB fundamentals using SQLite. You'll learn how to use SQLite with Python & practice basic CRUD operations as you go. freecodecamp.org/news/sqlite-py…

Pointers can be a confusing concept in C programming – but they're critical to understanding the language. Basically, they "point" to the location of data in memory. If this sounds hard to grasp, don't worry – this course will teach you how they work. freecodecamp.org/news/finally-u…

APIs allow different programs to communicate with each other. And when working with them, you'll need to write the logic, deploy the API, etc. In this guide, Daniel Adetunji explains how API gateways abstract all that away and why you may want to use one. freecodecamp.org/news/what-are-…

If you want to advance your career in DevOps, the Azure DevOps Engineer Expert cert (AZ-400) can help. It demonstrates to employers that you really know your DevOps stuff. And in this course, Andrew Brown helps you study for the certification exam. freecodecamp.org/news/master-th…

A virtual environment is an isolated place where you can test code before deploying it. And in this guide Victoria (Burah) Poromon walks you through setting one up for Python. She explains how venv and virtualenv work & helps you install Django in your new environment. freecodecamp.org/news/how-to-se…

When you're building applications, you'll often need to fetch data using an API. APIs help you deliver dynamic content in your app. In this guide, Ijay✨ explains how APIs work, talks about HTTP requests, & shows you how to fetch data in React. freecodecamp.org/news/how-to-fe…

Testing your code is an important part of the development process. And the Jest testing framework works well with all kinds of JavaScript projects. In this course, Tomi Tokko shows you how to use it & explains things like mocking and snapshot testing. freecodecamp.org/news/how-to-te…

Getting the Microsoft Azure Fundamentals cert can show future employers you know your cloud stuff. It's a great starting point for a career in Azure. In this course, Andrew Brown helps you study by reviewing cloud concepts, security principles, & more. freecodecamp.org/news/azure-fun…

Back end developers work on the parts of websites and apps that power what users see and interact with. Think storing and accessing data, working with APIs, and so on. In this roadmap, Shahan Chowdhury talks about what you need to know to be a back end dev. freecodecamp.org/news/skills-yo…

Low-code tools can help speed up development & make teams more productive. But this doesn't mean these projects don't require maintenance & planning. Here, Brandon talks about pair programming, code reviews, writing documentation, & more best practices. freecodecamp.org/news/low-code-…

Rate limiting regulates how often a client can make requests to a back-end server. This helps prevent various attacks like DDoS, Brute Force, and so on. In this guide, Oluwatobi shows you how to use rate limiting to protect web APIs from attacks. freecodecamp.org/news/what-is-r…