freecodecamp.org

177 articles in the TruthFoundry index. Each links out to the original.

• Tutorial: Building Referral-Aware Split Payment Flows in Django · A Django tutorial demonstrates building a referral-aware split payment system using state transitions and database transactions.
• Flutter Background Execution: iOS and Android Mechanisms Explained · This guide explains how Flutter handles background execution on iOS and Android using native APIs and Dart isolates.
• QA Engineers Adapt Traditional Testing for Conversational AI Agents · A guide explains how to test conversational AI by prioritizing intent over exact wording and evaluating multi-turn conversations.
• Build Type-Safe APIs with Hono and Zod · Tutorial explains using Hono and Zod to sync TypeScript types, runtime validation, and OpenAPI docs.
• Build a Neural Network from Scratch in Python with NumPy · This tutorial explains neural network concepts and provides code to build one using Python and NumPy.
• Chain of Responsibility Pattern Decouples Complex Business Rules · The Chain of Responsibility design pattern decouples request senders from handlers by passing requests through a sequence of single-responsibility gates.
• Guide to Self-Hosting and Managed Options for Odoo ERP · This guide compares self-hosted and managed hosting options for the Odoo open-source ERP platform.
• Use AI for Codebase Archaeology Before Refactoring Legacy Systems · Engineers should use AI to map and analyze legacy codebases before attempting refactoring or migration.
• Kubernetes Networking Explained: ClusterIP, CNI, and Cilium Service Mesh · A technical guide explaining Kubernetes networking from Pod IPs to Cilium service mesh implementation.
• How Wearable Sensors Convert Physical Signals into Health Data · Wearable devices use accelerometers, gyroscopes, and optical sensors to track health metrics through complex signal processing.
• Sanitizers Handbook: Detecting Memory, Initialization, and Race Bugs · A technical guide explains how sanitizers like ASan and TSan detect hidden native code failures.
• Wearables Measure Physiological Arousal, Not Emotional Valence · Wearable devices detect sympathetic activation but cannot distinguish between positive and negative emotions.
• 60 Architectural Patterns for Building Autonomous AI Agents · A new engineering guide organizes AI agent development around eight core capabilities instead of industry domains.
• Python and Neo4j Handbook: Building Knowledge Graphs from Scratch · A comprehensive guide to building knowledge graphs using Python and the Neo4j graph database.
• Hidden Cloud Security Risks: Misconfigurations, Excessive Permissions, and More · Organizations face hidden cloud security risks from misconfigurations and excessive permissions that require continuous monitoring.
• New Course Teaches Production-Ready Multi-Agent PR Review System Design · freeCodeCamp.org releases a course on building production-grade AI agents for automated code reviews.
• FreeCodeCamp Offers Visual Data Structures and Algorithms Course · A new free course on YouTube teaches data structures and algorithms using real-world analogies.
• freeCodeCamp Offers Visual Data Structures and Algorithms Course · freeCodeCamp's Sumit Saha teaches a visual course on data structures and algorithms using real-world analogies.
• Build Reinforcement Learning Framework in Pure C · A new course demonstrates building a reinforcement learning framework from scratch in standard C.
• Developer Migrates External Images to Own CDN to Avoid Vercel Quota Limits · A developer fixed Vercel free tier limits by migrating 691 external blog images to their own Cloudflare R2 storage.
• Developers learn to build accessible websites using WCAG 2.2 standards · The article explains how frontend developers can implement WCAG 2.2 requirements to create accessible websites.
• Flutter 3.47 Decouples Material and Cupertino into Standalone Packages · Flutter 3.47 releases standalone material_ui and cupertino_ui packages, ending tight coupling with the core SDK.
• How to Work with Subqueries in SQL · This article explains how to use subqueries in SQL, covering their execution order, types, and practical examples.
• Scaling LLM Inference for AI Agents with vLLM · This tutorial explains how to scale LLM inference for AI agents using vLLM, covering architecture, optimization techniques, and practical implementation steps.
• How to Manage Context Files for Better AI Coding Agent Output · A tutorial explains how to structure context files to prevent AI coding agents from ignoring repository conventions.
• Tutorial: Building a Python Discord Bot for Stories and Mental Wellness · A step-by-step guide to creating a Discord bot using Python for storytelling, chat, and mental wellness support.
• Handbook for Building Multi-Agent Trading Research Systems with LangChain · A technical guide details constructing a LangChain-based system to automate trading strategy research with deterministic evaluation layers.
• Wearable Devices Require Weeks of Data to Establish Accurate Health Baselines · Health wearables need two to four weeks of data to build accurate personal baselines before providing useful insights.
• Pydantic AI Solves Production Reliability Issues in LLM Agent Development · Pydantic AI framework automates schema validation and tool injection to replace brittle manual parsing in LLM agents.
• Tutorial: Build a Browser-Based PDF Filter Studio with JavaScript · A tutorial explains how to build a browser-based PDF Filter Studio using JavaScript, PDF.js, and PDF-lib.