The Real Difference Between useMemo and memo in React

<h1>Introduction: React <code>useMemo</code> Hook vs. <code>memo</code> HOC</h1> <p>React, the popular JavaScript library for building user interfaces, provides a suite of tools and techniques to optimize the performance of your applications. Among them, <code>useMemo</code> and <code>memo</code> are two commonly used techniques to prevent unnecessary re-rendering of components. Despite their similar goals, they differ significantly in terms of their implementation and use cases. In this article, we'll dissect the real differences between <code>useMemo</code> and <code>memo</code> in React, as well as explore their appropriate use cases with emoji-based code examples.</p> <h1>useMemo: A Hook for Caching Values</h1> <p><code>useMemo</code> is a hook that allows you to cache a value that is computationally expensive to create or remains the same between renders. It takes a function and a dependency array as its arguments. The function is only executed when one of the dependencies changes, ensuring that the value is recalculated only when necessary. Here's an example using emojis</p> <p><a href="https://medium.com/react-in-the-real-world/the-real-difference-between-usememo-and-memo-in-react-743c4cd3113a">Website</a></p>