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Inside SeaHack: 24 Hours to Build an AI Startup
We just published a new documentary-style video on the freeCodeCamp channel that takes you behind the scenes of a high-energy 24-hour hackathon. Quincy Larson traveled to Hong Kong to serve as a judge
How Executable Operational Specifications Can Make Software Automation Verifiable
Modern software systems are increasingly automated. We automate deployments, infrastructure changes, scaling, incident response, and data pipelines. And now, with AI agents, we are starting to automat
TimescaleDB Course – PostgreSQL for Time-Series Data
Managing massive, rapidly growing datasets efficiently is a critical skill for modern developers. Whether you are tracking API request logs, monitoring IoT fleet telemetry, or building dashboards for
Unlock the Power of AI Agents with the New Claude Certified Developer Foundations Course
Are you a software engineer looking to master building production-ready AI applications and agentic workflows? We've just published a brand new, comprehensive course on the freeCodeCamp.org YouTube ch
How to Build a Dart Package Analytics Tool with the pub.dev API: Beyond the 30-Day Window
When I published my package on pub.dev, the first few days were exciting as the number of downloads climbed. 201 downloads in a few days! Then something strange happened. The number dropped: 120, then
How to Port a Jekyll Blog Theme to Python: Lessons From Actually Doing It
I've been following a tufte-jekyll styled blog for a couple of years and that led me to discover Edward Tufte's book layout. Edward Tufte is renowned for his work on data visualization and information
Why You Should Never Embed Your Gemini API Key in Client Code (And How Firebase AI Logic Fixes It)
The explosion of generative AI has pushed thousands of web developers to add intelligent features to their apps. The first instinct is usually to call the Gemini API's SDK directly from the browser. T
How to Build a GraphRAG System with Python, Neo4j and ServiceNow [Full Book]
Somewhere in your company's ServiceNow instance is the answer to the question an engineer asks at two in the morning: if this is broken, what else is about to break? Every fact needed to answer it has
How to Detect Hidden Target Leakage in Public Datasets with Python and a Dependency Graph
Some time ago, I gave a machine learning model five columns from a public CDC dataset and asked it to predict a sixth column from the same file. The model scored an R² of 0.998, which is about as clos
The iOS NFC Handbook: How to Read, Write and Lock NFC Tags with React Native
Hold an iPhone near a sticker and something happens. A business card lands in your contacts, a focus session ends, or a door opens. The chip costs about twenty pence and holds roughly a hundred and th
In the directory since 25 Sept 2026 · last checked 25 Sept 2026 · RSS