Reuse latest selected state on selector re-run (#1654) #1660
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jgibson02
reviewed
Dec 3, 2020
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| const alwaysEqual = () => true |
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Does this also maintain the latest state if the equalityFn is defined within the component or inline?
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Yes—it only cares what the equalityFn returns, not what its identity is. However, having a non-pure equalityFn (i.e., one that closes over variables from its surrounding components) could have very surprising results.
nightpool
reviewed
Dec 3, 2020
Co-authored-by: nightpool <nightpool@users.noreply.github.com>
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Seems reasonable, I think. |
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I'm encountering the same issue, and this would be a nice fix. Is there something I can do to help with merging this PR? |
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Yeah, let's do this. |
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I'm not sure if it is a simple fix or a potential breaking change, but reuse latest selected state is quite important in preventing components from re-render frequently