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I agree, and that's why I like, in particular, the for-loop and, less so, map (and let's just pass over the grep) versions that iterate over ranges of 1 .. $#array or 0 .. $#array-1 and so will never enter the loop

The problem with the map/grep and postfix for is that they generate a list as big as the array.

Small lists: meh! But for big lists -- where big frequently is in the 100s of millions on my machine and billions on client/AWS X1 instances -- those lists cost big time.

Postfix while and until avoid that whilst still giving clean, concise code. Combined with each, its good for big hashes also.


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In reply to Re^5: Abusing Map by BrowserUk
in thread Abusing Map by writch

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