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 @f0851b88 What about something something `zip`? You know, like a … zipper? 
 @123b1d09 In Swift, as „zip“ requires two (not an arbritary number) of same-length arrays. Hence my example of 3 arrays of different lengths. 
 @f0851b88 I know, that's why there's something something in front of `zip`. What about short and precise like: `zipWithMultipleArraysWithDifferentLengths`? jk.

To me, merge suggests that you just throw everything in a bowl and don't care about the (original) index.