True the map doesn't do much, but it's a minimal benchmark for Aristotle's suggestion: 
my @array = map { do_stuff_with($_); $_ } 1 .. 5000;

[download]
I've replaced "do_stuff_with($_)" with a no-op. It didn't perform as well as the others, so that leads me to think I shouldn't pursue using map in this case.

In reply to Re: Re: Re: Re: array pre-allocation trick by Anonymous Monk
in thread array pre-allocation trick by Anonymous Monk

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