Performance issue in groupBy

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#189 建立於 2016年2月18日 10 則留言 1 個 reaction 已指派 0 人在 GitHub 檢視

PRs plz!

描述

I have an array of 300 non-trivial objects, which I want to filter with `groupBy`. When I attempt to do that, my whole applications slows to a crawl.

This is due to enormous amounts of time being spent in `getHashKey`, which `JSON.stringify`s the whole array to use that as the key for `$$cache`.

If there's an alternative approach, I'd love to hear it :)

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