Maybe a good use for the function map. Layman's terms: It applies a sub to each item of a list, and it returns a list of all the sub results. Okay, a better example: You have a list with numbers, you want a list of each number, times 3.
my @list = ( 5, 11, 7);
my @timesthree = map { $_ *= 3 } (@list);

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or if you only want to operate on multiples of five:
my @timesthree_onlyfives = map { $_ *= 3 if ($_ % 5 == 0) } (@list);

[download]
BUT, you will get a list of one item! so you want:
my @all_timesthree_onlyfives = 
   map { 
      if ($_ % 5 ==0) {
         $_ *= 5;
      } else {
         return $_;
      }
   } (@list);

[download]
But that could be done better.

Hope I've described it well, and HTH!

mhoward - at - hattmoward.org

In reply to Re: Inserting into an array while stepping through it by meredith
in thread Inserting into an array while stepping through it by Anonymous Monk

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