useCallback vs useState: When to Use Each Hook?

Can you explain the difference between useCallback and useState in React?

Sure! useState is used to manage state in a functional component, while useCallback is used to memoize functions.

When should I use useCallback instead of just defining a function normally?

You should use useCallback when you want to prevent unnecessary re-creations of functions on re-renders, especially when passing them to child components.

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

Absolutely! If you have a child component that relies on a function prop, using useCallback can help optimize performance by ensuring the function reference remains the same unless its dependencies change.

What are the performance implications of not using useCallback?

Not using useCallback can lead to unnecessary re-renders of child components, which can degrade performance in larger applications.