freeCodeCamp

The freeCodeCamp community just published the introductory chapters of our new A1 Professional Chinese Curriculum. You can now get started learning Chinese with what’s already available. Each chapter includes hundreds of interactive tasks designed to...... read more

In traditional programming, developers rely on unit tests to catch mistakes in applications. But when building AI products, that safety net doesn't exist. Responses can shift with model updates, data changes, and subtle fluctuations in prompts or ret...... read more

The freeCodeCamp community just published our new Relational Databases certification. You can now sit for the exam to earn the free verified certification, which you can add to your résumé, CV, or LinkedIn profile. Each certification is filled with h...... read more

Firewalls are one of the oldest tools in network security. Many people think they are outdated or replaced by newer tools like endpoint security or cloud security platforms, but that’s not the case. Firewalls still play a critical role in protecting...... read more

Computer vision is transforming how people train, from at-home workouts to smart gym mirrors. Imagine walking into your home gym, turning on your camera, and having an AI coach that sees your movements, counts your reps, and corrects your form in rea...... read more

The freeCodeCamp community just published our new B1 English for Developers certification for intermediate learners of English as a second language. You can now sit for the exam to earn the free verified certification, which you can add to your résum...... read more

Today Quincy Larson interviews Santosh Yadav. The son of a textile worker, he grew up inner-city Mumbai and studied hard to get into university. From there he's worked as a software engineer for 16 years. Along the way, he's picked up every distincti...... read more

Recently, I wanted to understand how smart home devices actually work. When you scan a QR code and a light appears in your Home app, what's really happening? When you tap "on", what bytes travel across your network? The best way I know to understand...... read more

Back in 2023, when I started using ChatGPT, it was just another chatbot that I could ask complex questions to and it would identify errors in my code snippets. Everything was fine. The application had no memory of previous states or what was said the...... read more

Databases are one of the most important parts of a software system. They allow us to store huge amounts of data in an organized way and retrieve it efficiently when we need it. In the early days, when the volume of data was relatively small, engineer...... read more