Reduce object creation during parsing#6758
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etimberg merged 4 commits intochartjs:masterfrom Nov 17, 2019
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src/core/core.datasetController.js
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| for (i = start; i < start + count; ++i) { | ||
| const element = me.createMeta(me.dataElementType); | ||
| me._cachedMeta.data.splice(i, 0, element); | ||
| me._parse(i, 1); |
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Sould be more efficient to first create all, splice once, parse once, update each
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I had been debating that and wasn't sure which would be more efficient. The splice is clearly more efficient the way you suggested, but we're now looping over the elements multiple times, so it wasn't clear to me which would be faster. I've updated it the way you suggested though
kurkle
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etimberg
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This is an alternative to #6750, which does not move
_parsedout ofmetaDataRemoved
addElementAndResetbecause of a bug.insertElementswas callingupdateElementviaaddElementAndResetand then calling_parse. However,updateElementassumes that the parsing has already happened, so these were happening in the wrong order. Also,_parseassumes themetaDatais already created and stored, so there was no possible way to calladdElementAndResetwithout causing issues. The code now calls these methods in the correct orderIt also renames
_valto_parsedin doughnut.