#react

The React library is pretty straightforward and is relatively easy to get into, especially with the wide variety of materials that exist to help you learn it. But every tool has its share of tricks or issues that these tutorials usually don’t cover. You get to learn them when someone reviews your code, or worse — when you’re facing a problem and are desperate to find a solution. Hopefully, with this article, I might reveal some of these things about React, and maybe even surprise you!

Interviews are hard, especially technical interviews where you’re expected to think, solve, and analyze all while the interviewer stares at you. But what people don’t realize is that being interviewed is basically just another skill, and skills can be honed with the right information and practice.

React provides us two built-in hooks to optimize the performance of our app, useMemo & useCallback. At first glance, it might look like their usage is quite similar, so it can get confusing about when to use each. To clear that confusion, let’s understand the actual difference and the correct way to use them both.