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Re^3: Finding oldest file in directory

by halley (Prior)
on Oct 18, 2004 at 18:41 UTC ( #400272=note: print w/replies, xml ) Need Help??


in reply to Re^2: Finding oldest file in directory
in thread Finding oldest file in directory

I think what Randal L. Schwartz was referring to, when he said "cache it for the sort," was to use a very common sort optimization technique called, not coincidentally, the Schwartzian Transform.
@sorted = map { $_->[0] } sort { $a->[1] <=> $b->[1] } map { [ $_, (-s $_) ] } @unsorted;

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