Reduce wasted render for activities #2710
Merged
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Changelog Entry
Fixed
<BasicTranscript>
, in PR #2710Description
Add a new
useMemoArrayMap
hook for. It works likeArray.map
but also memoizing partial result from the mapper. The resultant array is a new one, but items in it will be memoized as needed.If the mapper function changed, all memoized result will be invalidated.
Specific Changes
useMemoArrayMap.js
hook for memoizing partial result forArray.map
.BasicTranscript.js
to useuseMemoArrayMap
for the first-pass of render.