React useCallback | Mastering of React | Part - 21

Summary
Use useCallback to enhance React app performance by optimising re-renders.
Highlights:
- 💡 Avoid unnecessary re-renders by selectively updating components with useCallback.
- 🔁 Only re-render components that depend on updated state or props.
- ⚡ Improve performance by creating memoized callback functions.
- 🚫 Prevent infinite loops by ensuring dependencies are correctly specified.
- 🛠️ Use useCallback for React versions 16-18, as it's handled automatically in React 19+.
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