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A comment on JavaScript Array.push is 945x faster than Array.concat. Parent comment

Re:JavaScript Array.push is 945x faster than Array.concat by yongjik on Thursday May 23, 2019 @01:26PM (#19993814)
If you are doing deep structure compare to check if an object was "changed", you're doing "mutable programming" wrong.

IMHO, if you're doing deep compare on anything for any reason, it's usually a sign that the data model is on a shaky ground.

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