useCallback Explained ⚛️ | Optimize Functions in React App 🚀 | Tamil #17

🚀 React useCallback Tutorial – Optimize Callback Functions in Tamil ⚛️💻

Struggling with unnecessary re-renders in your React components? 😅
This React useCallback tutorial in Tamil will teach you how to memoize callback functions, improve rendering performance, and make your React app super smooth and efficient ⚡

Whether you’re building real-world projects or preparing for interviews, useCallback is a must-know hook for high-performance React applications 💯

🔥 What You’ll Learn in This Video

✅ Introduction to useCallback in React
✅ How memoization prevents callback re-creation on every render
✅ Optimizing callback functions for child components
✅ Reducing unnecessary re-renders
✅ Managing dependencies and memoization keys
✅ Advanced performance optimization techniques
✅ Best practices for using useCallback effectively

💡 Why React useCallback is Important

✔️ Prevents costly re-renders
✔️ Optimizes callbacks passed to children or hooks
✔️ Enhances overall component responsiveness
✔️ Perfect for scalable React applications
✔️ Essential for high-performance React projects

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Timestamps:
0:00 - Introduction: Why useCallback is essential
0:32 - Key Distinction: useCallback vs useMemo
1:20 - Best Use Cases for Performance
2:20 - Hook Syntax and Dependency Array
5:00 - Demo: Implementing useCallback
6:37 - Crucial Concept: Why re-renders still occur
7:39 - Final Demo: Optimizing unnecessary re-renders

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