What are the best performance tools for HOCs?

What are the best performance tools for higher-order components (HOCs)?

Some popular performance tools for HOCs include React.memo, PureComponent, and the useCallback hook. Would you like to know how to implement them?

Yes, please explain how to use React.memo.

React.memo is a higher-order component that memoizes the result of a component. It only re-renders if the props change. You can wrap your component like this: const MemoizedComponent = React.memo(MyComponent);.

What about the useCallback hook?

The useCallback hook returns a memoized version of the callback function that only changes if one of the dependencies has changed. This helps prevent unnecessary re-renders.

Can you give an example of useCallback in action?

Sure! Here's a simple example: const memoizedCallback = useCallback(() => { doSomething(a, b); }, [a, b]); This will only recreate the function if 'a' or 'b' changes.