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In this video we will learn about React hooks, starting with useMemo. This powerful React hook will allow you to fix your performance problems by memoizing a value and only re-computing when necessary. You will learn how to identify expensive computations in your components, how they affect the performance of your React app, and how to implement React's useMemo to memoize the value and use the dependency array to only compute when necessary.

In this new React world, hooks are here to stay, so it's best to learn them! In this tutorial I demonstrate the useMemo React hook, and I explain it very simply and in a way that is easy to understand. Enjoy!