TeachMeIDEA
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RAG (Retrieval-Augmented Generation) from Scratch
Large language models are powerful, but they do not know your data. Retrieval-augmented generation (RAG) solves that gap by combining...
LangChain Fundamentals: Chains, Agents, and Memory
LangChain is often introduced as a convenience library for LLM apps. In practice, it is an architectural toolkit. Teams that...
Getting Started with Claude API: Messages, Tools, and Streaming
If you are integrating large language models into real applications, the API design matters as much as the model itself....
Building Apps with OpenAI API: Chat, Embeddings, and Function Calling
Large language models are no longer experimental tools. They are now core infrastructure for modern applications. However, many teams struggle...
React Hooks Deep Dive: useState, useEffect, useRef, and Custom Hooks
If you are building modern React applications, hooks are unavoidable. However, many real-world bugs and performance issues come from misunderstanding...
PostgreSQL Performance Tuning: Indexes, EXPLAIN, and Query Optimization
As PostgreSQL databases grow, performance problems rarely appear overnight. Instead, queries that once felt instant slowly become inconsistent and harder...
Accessibility Best Practices for React Native Applications
Introduction Accessibility ensures that mobile applications can be used by everyone, including users with visual, motor, hearing, or cognitive impairments....
Implementing Deep Linking in React Native for Mobile Apps
Introduction Deep linking allows mobile apps to open specific screens directly from external sources such as emails, websites, push notifications,...
Debugging & Profiling React Native Apps with Flipper
Introduction As React Native applications grow, debugging performance issues and tracking unexpected behavior becomes more challenging. Console logs alone are...