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Discussion on: A quick explanation on useEffect

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Samuel Scheiderich

I just wrote an article the topic: dev.to/samsch_org/effects-are-not-...

The purpose of the second argument is to be an optimization feature, not for control flow. This isn't state particularly explicitly in the React docs, but note that it's referred to as an optimization tool here reactjs.org/docs/hooks-effect.html... and how the examples throughout the doc page don't use the deps arg.

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Dominik Biedebach Author

Hey Samuel, thanks that was an interesting read! I'll link to it in my article if thats fine.

I totally agree with you that dependency arguments are meant to be used as a performance tool, not lifecycles. In my post I just used lifecycles as an example on how the different parts of an effect work and how users can replicate lifecycles using them (and the return function).

Give me a few minutes to bring in your article into my post.