What is the difference between useMemo and useCallback?

Both useMemo and useCallback prevent unnecessary recalculations.

⚙️ useMemo Example

const expensiveValue = useMemo(() => computeExpensiveValue(a, b), [a, b]);

✅ Caches the return value of a function.

⚙️ useCallback Example

const handleClick = useCallback(() => {
  console.log('Clicked!');
}, []);

✅ Caches the function itself, avoiding new references on every render.