freeCodeCamp

A Deep Dive into Gabeldorsche: The Bluetooth Stack Android Rebuilt on Purpose

Nikheel Vishwas Savant |
The Android Bluetooth stack spent about a decade being the reason your headphones disconnected during the good part of a song. Gabeldorsche is Google's attempt to fix that at the architectural level,... read more

How to Analyze Insider Transactions with Python: A CEO Buying Case Study

Nikhil Adithyan |
When a CEO buys shares after their company’s stock has fallen hard, it's tempting to read the purchase as a vote of confidence. The person running the business knows more than the average investor, so... read more

The React Native Live Activities Handbook: How to Build iOS Live Activities and Android 16 Live Updates

Farouq Seriki |
A Live Activity is the card that sits on your lock screen while a delivery rider approaches, updating itself without you opening the app. Apple shipped the API in iOS 16.1. Google shipped its own vers... read more

CNNs, RNNs, and Transformers Explained: A Mental Model for Key Deep Learning Concepts

Roland Sankara |
Okay, pop quiz: What is a neural network? What is deep learning? Does anything come to mind? I know that feeling – yes, that thing you’re feeling now. It’s either confidence that you know what I’m ask... read more

How to Build and Schedule Local AI Assistants for Daily Tasks

Darsh Shah |
Most AI agents are reactive as they wait for us to ask something. In this tutorial, I'll show you how to build local AI assistants that run on a schedule, handle the tasks you care about, and generate... read more

How to Integrate AI Agents in .NET Environments for Faster Development

Gopinath Karunanithi |
Generative AI agents are transforming .NET development by helping developers automate repetitive coding tasks, generate unit tests, assist with debugging, document code, and accelerate CI/CD workflows... read more

How to Build a Shadcn Sheet Component in React: Cart and Filter Panel Examples

Vaibhav Gupta |
A Sheet is a panel that slides in from the edge of the screen instead of popping up in the center like a modal. You've likely used one when you've opened a shopping cart on an e-commerce site or tappe... read more

How to Build a Browser-Based PDF Image Extractor Using JavaScript

Bhavin Sheth |
PDF files are widely used for sharing documents because they preserve formatting across different devices. Many PDFs contain valuable images such as logos, product photos, charts, diagrams, illustrati... read more

Product Experimentation with Uplift Modeling: Targeting Your LLM Feature Rollout to Users Who Actually Benefit (Python Implementation)

Rudrendu Paul |
Your LLM product experiment just came back positive, with a promising 8-percentage-point lift in task completion. You ship the feature and leadership celebrates. Three months later, the core metric ha... read more

How to Turn a Postman Collection into a Maintainable pytest Suite

Mikhail Golikov |
A Postman collection is a great place to explore an API. But it's a poor place to keep your tests. Most teams find this out the slow way. Someone exports the collection, converts the requests into tes... read more