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It’s no secret that React.js has become widely popular in recent years. It’s now the JavaScript library of choice for many of the internet’s biggest players, including Facebook and WhatsApp.
One of the main reasons for its rise was the introduction of hooks in version 16.8. React hooks allow you to tap into React functionality without having to write class components. Now functional components with hooks have become developers’ go-to structure for working with React.
In this blog post, we’ll dig deeper into one specific hook — useCallback — because it touches on a very fundamental part of functional programming known as memoization.