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Re: RE: Schwartzian Transform

by Vynce (Friar)
on May 23, 2001 at 01:05 UTC ( #82398=note: print w/ replies, xml ) Need Help??

in reply to RE: Schwartzian Transform
in thread Schwartzian Transform

i hate to get picky, but your Schwartzian transform doesn't look like merlyn's to me.


my @sorted = map{ $_->[0] } sort {$a->[1] cmp $b->[1]} map { m/(.*?)\s*(\S+)$/; [$_, "$2 $1" ] } @unsorted;
my @output = map { $_->[1] } sort { $a->[0] cmp $b->[1] } map { [$_, expensive_func($_)] } @input;
is this because the ST is more general than i thought, or is there a typo in merlyn's ST writeup? i'm not sure i'm comfortable with any sort that compares $a->[0] to $b->[1]... is there ever a good reason to do that?

update: looks like merlyn's changed his to compare index 1 of both arrays. which is almost a shame; i was hoping there was some really cool reason to compare different indices. but anyway, i withdraw the question.

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