What is the role of useCallback in React?

Can you explain what useCallback does in React?

Sure! The useCallback hook is used to memoize functions in React, preventing unnecessary re-creations on re-renders.

Why is it important to memoize functions?

Memoizing functions helps optimize performance by avoiding unnecessary renders, especially in components that rely on those functions.

Can you give me an example of how to use useCallback?

Of course! Here's a simple example:

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

This will create a memoized version of handleClick that only changes if its dependencies change.

When should I avoid using useCallback?

You should avoid using useCallback when the function is simple and doesn't cause performance issues, as it can add unnecessary complexity.