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[Docs] Replace 'mix in' in PureComponent notes (#8730)

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* [Docs] Replace 'mix in' in PureComponent notes

* Style nit
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Spen Taylor
2017-01-10 06:02:22 -08:00
committed by Dan Abramov
parent 7e47c1aa4a
commit c3ce14a373
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docs/docs/reference-react.md
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@@ -106,7 +106,7 @@ If your React component's `render()` function renders the same result given the
> Note
> `React.PureComponent`'s `shouldComponentUpdate()` only shallowly compares the objects. If these contain complex data structures, it may produce false-negatives for deeper differences. Only mix into components which have simple props and state, or use [`forceUpdate()`](/react/docs/react-component.html#forceupdate) when you know deep data structures have changed. Or, consider using [immutable objects](https://facebook.github.io/immutable-js/) to facilitate fast comparisons of nested data.
> `React.PureComponent`'s `shouldComponentUpdate()` only shallowly compares the objects. If these contain complex data structures, it may produce false-negatives for deeper differences. Only extend `PureComponent` when you expect to have simple props and state, or use [`forceUpdate()`](/react/docs/react-component.html#forceupdate) when you know deep data structures have changed. Or, consider using [immutable objects](https://facebook.github.io/immutable-js/) to facilitate fast comparisons of nested data.
>
> Furthermore, `React.PureComponent`'s `shouldComponentUpdate()` skips prop updates for the whole component subtree. Make sure all the children components are also "pure".