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Schwartzian Transform vs. Building Hash of Function Results, Then Sorting on Function Results

by davebaker (Monk)
on Oct 16, 2006 at 18:54 UTC ( #578571=note: print w/replies, xml ) Need Help??

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  1. or download this
        my @output =
          map { $_->[0] }
          sort { $a->[1] cmp $b->[1] }
          map { [$_, expensive_func($_)] }
        @input;
    
  2. or download this
        foreach $_ (@input) {
            $result_for{$_} = expensive_func($_);
        }
    ...
        my @output
            = sort { $result_for{$a} cmp $result_for{$b}
                   } @input;
    

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[Discipulus]: ;=) I will unavailable this week during eu morning time: I'm following a redhat 7 basci course, finally
[1nickt]: bravo
[jedikaiti]: wheee
[Discipulus]: bravo the $employer who pay 1.340 neuros + vat ;=)
[Discipulus]: but i'd need 2 courses o acces the first lvl examen: they didnt pay it this year
[1nickt]: damn. pricey. I would have said there's not much to learn but apt-get, and do everything else in Perl ... but maybe I am forgetting some of the learning curve ;-)
[Discipulus]: the teacher is a python programmer.. ;=) he said it was fshion when he had to choose..

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