freeCodeCamp

If you’re a developer looking for a simple, fast, and self-hosted backend, PocketBase might be exactly what you need. It’s an open-source backend written in Go that lets you set up a complete backend with database, authentication, file storage, and ...... read more

Dr. David J. Malan teaches computer science at Harvard. Over the past decade, millions of people have taken his CS50 course both in person and online. He joins us to talk about: Why he still recommends learning the C programming language in 2026 Ho...... read more

Several languages and frameworks depend on dependency injection—no pun intended. Go, Angular, NestJS, and Python's FastAPI all use it as a core pattern. If you've been working with FastAPI, you've likely encountered dependencies in action. Perhaps yo...... read more

When people think of artificial intelligence, they imagine complex models, data centers, and cloud servers. What most don’t realize is that the real engine behind this AI revolution started in a place few expected: inside the humble gaming PC. The sa...... read more

Picture this: you’re sitting in a café with your laptop open, phone on the table, smartwatch buzzing every few minutes, and Bluetooth earbuds playing music. From your perspective, life is peaceful. From your phone’s perspective, it’s juggling a ridic...... read more

If your phone were a person, it would probably be that overachieving friend who cannot sit still. The kind who insists they are relaxing while secretly running errands, replying to messages, and checking the weather at the same time. Inside your Andr...... read more

Large language models are powerful, but they can also be unpredictable. They might generate long explanations when you expect a short summary, skip fields in a JSON output, or change the format completely from one request to another. When you’re buil...... read more

JSON, or JavaScript Object Notation, was popularized by Douglas Crockford in early 2000. Since then, there’s been no looking back. JSON has become the standardized data exchange format between client and server technologies. JSON was built for humans...... read more

If you’ve ever opened the Android Bluetooth source code, you might know this feeling. You go in with the calm confidence of a developer who just wants to understand how things work. You open BluetoothAdapter.java and think, “Ah, this looks clean.” Th...... read more

You may have built a Retrieval-Augmented Generation (RAG) pipeline to connect a vector store to a powerful LLM. And RAG pipelines are incredibly effective at grounding models in factual, up-to-date knowledge. But if you've worked with them long enoug...... read more