When should I use useCallback in React?

When should I use useCallback in React?

You should use useCallback when you want to memoize a function to prevent unnecessary re-creations on re-renders.

Can you give me an example of how it works?

Sure! If you have a component that passes a callback to a child, use useCallback to ensure the child doesn't re-render unless necessary.

Are there any performance implications if I don't use it?

Yes, not using useCallback can lead to performance issues, especially in large applications with many components.

What about useMemo? How is it different?

useMemo is used to memoize values, while useCallback is specifically for memoizing functions. They serve different purposes.