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Complex sorting

by vroom (Pope)
on Dec 31, 1999 at 22:02 UTC ( #1641=perltutorial: print w/replies, xml ) Need Help??

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  1. or download this
    #map BLOCK, LIST
    #or something like
    ...
    #or
    #map EXPR, LIST   
    @asciival=map(ord,@letters);
    
  2. or download this
    @origarray=('0 1 2','0 0 0','-3 -2 -1','10 11 12');
    @sortedarray=
    ...
    foreach(@sortedarray){
      print "$_\n";
    }
    
  3. or download this
    @sortedarray=
     map{$_->[0]}
    ...
              #calculate $computedsortval
              [$_,$computedsortval];
           } @origarray;
    

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[Lady_Aleena]: My biggest problem with hashes at the moment is one with 2,501 keys.
[choroba]: how many event types are there?
[Corion]: Also I found that I can't conveniently weaken an array slot, which also is inconvenient, as I want my one-shots to disappear if the caller discards them
[Corion]: choroba: Currently two or three that my program handles (WWW::Mechanize:: Chrome), but there might be more that become interesting
[Corion]: But I don't expect more than 100 to be active at the same time, so I'm not really sure if there is a not-too-fancy data structure that is maintained with few lines of code where the performance is better than the linear scan ;)
[Corion]: But I should do a mock-up program so that others can see what I'm talking about ;)
[robby_dobby]: Corion: I hope you know all too well that passing around "fancy" datastructures is a recipe for disaster :-)
[robby_dobby]: As in, it's-too-fancy- that-it-will-be- messy-to-handle
[choroba]: bit vectors as keys?
[robby_dobby]: Hmm, I keep falling asleep at my desk, while maintaining an active appearance. Am I getting old?

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