freeCodeCamp.org @freeCodeCamp
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. freecodecamp.org Just here on Earth... for now Joined August 2013-
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For today's coding challenge, you'll get an array of at least two optional stops for a day trip. Your task is to determine the number of valid itinerary arrangements that are possible. Check it out on the freeCodeCamp mobile app.
Repeat payments look simple to users, but for devs, the backend is where things can get tricky. In this article, @manishmshiva breaks down some challenges teams face with subscriptions, memberships, and SaaS billing. You'll learn about scheduling, idempotency, dunning workflows, webhooks, state consistency, and more. freecodecamp.org/news/backend-c…
Roles are useful for access control until your auth rules turn into role explosions. In this guide, @joshuaaabraham explains how ABAC makes access decisions using users, resources, actions, and context. You'll write policies, build an evaluation engine, compare ABAC with RBAC, and apply it to real-world access control. freecodecamp.org/news/how-attri…
Medical imaging data needs more than standard ML preprocessing. In this guide, Lakshmi shows you how to prepare chest X-rays for machine learning with Python and OpenCV. You'll validate datasets, catch leakage, scale and normalize images, apply CLAHE, handle missing data, and more. freecodecamp.org/news/how-to-pr…
In most languages, programs use the stack and heap to store data in memory. But in Go, you don’t choose where values live. Instead, the compiler decides using escape analysis. In this guide, @EtiIjeoma explains what escape analysis is, what causes heap allocations, and how to reduce unnecessary allocations for better performance. freecodecamp.org/news/understan…
Data fetching in React can get tricky as your apps scale. And in this handbook, @tapasadhikary walks you through modern data fetching strategies. You'll first review useEffect, then learn how to use Suspense, the new use() API, and ErrorBoundary. freecodecamp.org/news/the-moder…
Developing solid public speaking and presentation skills can really help you out as a dev. And to help you improve, @SmoothTee_DC has a fun and practical project for you. You'll learn how to build a real-time public speaking and presentation coach with Stream Video, Vision Agents, and other powerful tools. freecodecamp.org/news/how-to-bu…
For today's coding challenge, you'll help a group of people determine who will be roommates based on various rules. Sounds fun, right? Check it out on the freeCodeCamp mobile app.
Vim is a powerful, customizable text editor that many devs swear by. It has a steep learning curve for beginners, but this course helps smooth that out for you. In it, @andrewbrown teaches you about Vim's history, customization & plugins, and core commands. freecodecamp.org/news/mastering…
We're moving from "Answers" to "Actions" in agentic development. In this in-depth course, @beaucarnes introduces you to the @ManusAI ecosystem and takes you from building apps and doing research to using their developer API. It’s everything you need to know to start building with autonomous AI agents. #aiagent freecodecamp.org/news/learn-to-…
If you want to protect yourself against cybersecurity threats, it's helpful to know how attackers might hack you. And in this course, you'll learn how to identify, exploit, and defend against real-world vulnerabilities. You'll use Kali Linux and learn about penetration testing, network security, tools like Nmap and Wireshark, and lots more. freecodecamp.org/news/learn-cyb…
Everyone wants their AI-powered application to be personalized - remembering their preferences, and so on. But if a personalized agent is gonna survive production, you'll need to connect it to tools and manage multi-step workflows. In this guide, Nataraj helps you build AI agents that remember user preferences (without breaking context). freecodecamp.org/news/how-to-bu…
Testing your applications is something you should do before problems start appearing in production. And if you're building apps with React + Vite, the Vitest framework is a good fit. In this tutorial, @joshuaaabraham walks you through testing your components and hooks with Vitest. freecodecamp.org/news/how-to-te…
If you want to show that you have a deep understanding of Kubernetes admin, this course is for you. It'll help you study for (and hopefully pass!) the Kubernetes Administrator Certification exam. You'll learn about cluster architecture, role-based access control, workloads and scheduling, networking, and lots more. freecodecamp.org/news/prepare-f…
Git stash lets you temporarily save uncommitted code changes so you can go work on something else without committing incomplete work. It has a bunch of helpful variations, which @chidiadi01 teaches you how to use in this guide. You'll see code examples of git stash push, pop, apply, list, and more so you can use stash effectively in your projects. freecodecamp.org/news/how-to-sa…
If you've ever traveled across multiple time zones, you know the pull of jet lag. For today's coding challenge, you'll calculate how many jet lag hours a traveler is experiencing based on where they started, which way they traveled, and how long their flight was. Check it out on the freeCodeCamp mobile app.
Design patterns give you proven solutions to common problems in software development. And if you've ever struggled with repeatedly creating objects or managing different object types, the factory pattern can help. Here, @balawc27 explains how it works in Python with helpful code examples. freecodecamp.org/news/how-to-us…
Here's a practical project to help you improve your Python skills: building a résumé screening system. In this tutorial, @AbdulTa62185243 focuses on core programming concepts and the power of multi-processing. You'll parse documents, design a scoring algorithm, build a web interface, and deploy the app at the end. freecodecamp.org/news/python-re…
When you're building an application, different parts need to communicate - both within the app and with the outside world. This is made possible by APIs - and REST has become a popular way to architect your APIs. Here, @KraneOliver teaches you key REST API principles by walking you through building an Express movie app. freecodecamp.org/news/learn-res…
Data pipelines let you collect, process, and use huge amounts of data efficiently. But building and maintaining these pipelines can be tricky with API rate limits, changing data schemas, etc. In this in-depth course, you'll learn about data ingestion & normalization, data loading with an open source Python library, tuning performance, and much more. freecodecamp.org/news/data-load…
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