We're a community of millions of people who are building new skills and getting new jobs together. A 501(c)(3) public charity. Tweets by @abbeyrenn.
Joined August 2013
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For today's coding challenge you'll build a credit card validator. You'll get a string of digits, and you'll need to determine if it's a valid card number based on some rules. See if you can solve it on the freeCodeCamp mobile app.
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Machine learning tasks usually start in a Python notebook - it's easy to explore data, test ideas, and iterate quickly.
But as projects scale and expectations change, your work might outgrow your notebook.
In this guide, Oyedele shares some tools that'll help you take your ML projects beyond Python notebooks.
freecodecamp.org/news/how-to…
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If you're curious how chat apps like Discord work behind the scenes, this handbook is for you.
In it, @caesar_sage helps you build a real-time chat server from scratch using Go.
It'll support unlimited concurrent users chatting in real-time, message persistence, session management, and more.
freecodecamp.org/news/how-to…
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A circuit breaker is a fault-tolerance pattern that stops a system from repeatedly attempting operations that are likely to fail.
And in this detailed guide, Jessica teaches you how to build your own in Spring Boot.
You'll learn about why circuit breakers are useful, concurrency and state transition guarantees, failure tracking, and lots more.
freecodecamp.org/news/how-to…
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Learning how to work with AI in the cloud is an important skill for devs these days.
And in this 23 hour course, @andrewbrown teaches you all the fundamentals of Generative AI.
You'll learn about LLMs, AI assistants, prompt engineering, development tools, RAG, and more.
freecodecamp.org/news/learn-…
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If you have a full-stack app in your local environment and are ready to take it to production, this course is for you.
You'll learn about container orchestration, managing environments with Docker Compose, & deployment.
Along the way, Gavin also teaches you about working with Dockerfiles, testing your app, and more.
freecodecamp.org/news/build-…
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When you perform tasks that require heavy processing in Node.js, performance can start to suffer.
You may think this means Node is no good, or JavaScript is flawed - but @sumit_analyzen is here to teach you a solution.
In this handbook, you'll learn how to use multi-threading in Node.js with worker threads.
freecodecamp.org/news/how-to…
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Jun 13
For today's coding challenge, you'll get a 2D grid (an array of arrays) representing a city's building layout. You'll need to return the coordinates of all buildings that violate zoning rules. See if you can solve it on the freeCodeCamp mobile app.
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Jun 13
AI Agents are useful tools that can perceive their environment, "think" about what to do, and then act accordingly.
And in this guide, Manish explains the basics about how these agents work.
You'll look at a real-world example using the OpenAI API and learn about the core loop, how agents learn, and more.
freecodecamp.org/news/how-do…
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Jun 13
If you want to build iOS apps, this course is for you.
You'll learn how to use the powerful SwiftUI framework along with XCode to build a movie browsing app.
You'll also use SwiftData to save titles for offline viewing and learn about integrating APIs along the way.
freecodecamp.org/news/learn-…
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freeCodeCamp.org retweeted
Jun 13
If you’re in Tokyo...
6月22日（月）19時から渋谷で freeCodeCamp の Coffee & Code やります☕️💻
新しいコミュニティマネージャーのEnaと僕と一緒に参加します。
本気で来たい人はDMください。参加枠を確保します。
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Jun 13
If you're prepping for technical interviews, you likely have data structures and algorithms on the brain.
And this comprehensive (49 hour!) course covers all the most popular ones you'll run into during interviews.
You'll also learn about Big O Notation, sorting and searching, dynamic programming, and lots more.
freecodecamp.org/news/master…
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Jun 13
Voice apps have pretty strict requirements for latency, privacy, and customization - understandably.
So it's often hard to find an AI voice tool that really fits your needs.
In this tutorial, @juntao helps you build your own voice AI agent using open source tools.
freecodecamp.org/news/how-to…
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Jun 12
When you're building APIs in Node.js, there are some security best practices you should follow.
These will help you harden your APIs and protect them from common threats.
In this guide, Manish shows you how to use environment variables, validate input, rate limit your endpoints, and more.
freecodecamp.org/news/how-to…
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Jun 12
Google has a new Generative AI Leader Certification you can get to show you know how to effectively and responsibly use GenAI in business settings.
And in this course, @andrewbrown helps you study and prepare for the exam.
He'll give you a business-level understanding of Google Cloud's GenAI offerings so you'll be ready to sit for the exam.
freecodecamp.org/news/pass-t…
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freeCodeCamp.org retweeted
Jun 12
This weekend learn how to gather your own datasets. freeCodeCamp just published a FREE 1-hour JavaScript web scraping course. 🔥
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For today's coding challenge, you'll be given a string of HTML. Your task is to return the plain text content with all tags removed. Check it out on the freeCodeCamp mobile app.
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Jun 12
Model-Context-Protocol lets AI agents securely and intelligently interact with your databases, functions, and apps.
And in this course, you'll learn how to create MCP servers using the open source FastMCP Python lib.
You'll build a calculator app, integrate APIs, and test everything with help from GitHub Copilot.
freecodecamp.org/news/learn-…
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Jun 12
If you're getting into a career in tech, knowing how to leverage free learning resources is key.
And so is contributing to open source projects to practice your new skills.
In this talk in Spanish, @EstefaniaCassN explains how to use freeCodeCamp and other resources to get started.
freecodecamp.org/news/how-to…
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Jun 12
When you're building web apps, some tasks shouldn't happen inside a user's request.
So in this guide, Timothy shows how to build a PostgreSQL-backed job queue in Go using the open source Swig project.
You'll learn some helpful commands, how advisory locks, retries, goroutines, and transactions work, and more.
freecodecamp.org/news/how-to…
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