Travel, Code, and Engineering

Tag: react

React Dependency Arrays and Derived State

Dependency arrays are a very important part of React Hooks. They allow you to indicate what your effects, callbacks, and memos depend on so they can be recalculated only when necessary. For effects, this means your effects will be re-run every time one of your dependencies changes. The way that React determines if a dependency changes might not be the way you think, so you must be careful!

react, coding | 2020.02.23 00:00 | Kurt Tomlinson

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