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Re:Ask HN: Can someone explain me React Hooks? by Isammoc on Saturday March 19, 2022 @04:42AM (#30732212)
The whole purpose is the pureness of your component.

When react executes your component function, it will initialize a context (a big array) and each hook will be linked to an index in this context.

So, while being nearly pure, we can describe side effect but only for the provided context.

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