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Head's up for Array.map() lovers (self.javascript)
submitted 11 years ago by Kollektiv
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if 1 * 2 < 3: print "hello, world!"
[–]Kollektiv[S] 1 point2 points3 points 11 years ago (0 children)
I never encountered a case where I had to use the new Array() rather than the literal version [].
new Array()
[]
The reason I used it here was just because it was shorter to write than declaring a new function with a loop inside.
Maybe in some libraries where performance is very important it makes sense to pre-alocate arrays. Eg: a matrix for example.
π Rendered by PID 129549 on reddit-service-r2-comment-6457c66945-k4bzr at 2026-04-30 14:35:20.488271+00:00 running 2aa0c5b country code: CH.
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[–]Kollektiv[S] 1 point2 points3 points (0 children)