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freeCodeCamppythonnode

How to Build Your First Multi-Agent AI System in Python and LangGraph

In this tutorial, I'll show you how to build a multi-agent AI system in Python with no orchestration framework. We'll also implement this in LangGraph with nodes, edges, and shared state. The point of

Darsh Shah 11 minabout 19 hours ago

freeCodeCampdockernode

How to Containerize a Node.js Application with Docker and Deploy with GitHub Actions

If you've been building Node.js projects, you've probably had an experience like this. The project runs fine on your machine, but when you push it to a server, something breaks. Maybe it's a different

Zia Ullah 13 minabout 20 hours ago

freeCodeCampgo

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

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,

Nikheel Vishwas Savant 37 min1 day ago

freeCodeCamppython

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

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

Nikhil Adithyan 28 min1 day ago

freeCodeCampreactgo

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

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

Farouq Seriki 62 min1 day ago

freeCodeCampai

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

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

Roland Sankara 14 min1 day ago

freeCodeCampreacttutorial

How to Build and Schedule Local AI Assistants for Daily Tasks

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

Darsh Shah 10 min2 days ago

freeCodeCampai

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

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

Gopinath Karunanithi 18 min2 days ago

freeCodeCampreact

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

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

Vaibhav Gupta 12 min2 days ago

freeCodeCampjavascriptgo

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

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

Bhavin Sheth 21 min2 days ago

freeCodeCampapiai

How to Turn a Postman Collection into a Maintainable pytest Suite

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

Mikhail Golikov 6 min6 days ago

freeCodeCampnodeapi

How to Implement Role-Based Access Control in a Node.js REST API with JWT

The first time I built an API without thinking about roles, I gave every logged-in user the same access. It worked fine until a regular user accidentally hit a delete endpoint and wiped test data. Tha

Zia Ullah 10 min6 days ago

freeCodeCampjavascriptgo

How to Build a Browser-Based PDF OCR to Text Converter Using JavaScript

Not every PDF contains searchable or editable text. Many PDFs are simply scanned images of documents such as invoices, contracts, books, receipts, government forms, and handwritten notes. While these

Bhavin Sheth 20 min8 days ago

freeCodeCampjavascript

How to Build a Browser-Based PDF Analyzer Using JavaScript

PDF files are one of the most widely used document formats for sharing reports, invoices, contracts, books, research papers, manuals, forms, and business documents. Although viewing a PDF is simple, u

Bhavin Sheth 17 min12 days ago

freeCodeCamp

How to Build an AJAX Cart Drawer in Shopify (the 2026 Way)

Add a product to a Shopify store the default way and the whole page reloads. The shopper is looking at your product, they click Add to cart, and the browser throws the page away and rebuilds it. On a

baslefeber 21 min12 days ago