Remove appends in Map and Repeat #2
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thecsw
approved these changes
Nov 12, 2022
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Previously, in
MapandRepeat, new slices were being allocated with an initial length of 0, which was incremented by anappendevery iteration. These functions return a slice of the same size as their input slice, and so there should be no need toappendat all.This PR sets the final length of the slice in the
makecall, and then directly indexes the slice in the loop. I've noticed there is much less generated assembly.