Keep in mind that perl currently doesn't do nested subs (this is the souce of many a warning for those using Apache::Registry with mod_perl; see the mod_perl guide for a detailed explanation).

You could possibly return a list of coderefs that you create and use sort_em more as a sort routine factory. 

sub sort_em {
  my $src = shift;
  return {
           up => sub { $src->{$a} <=> $src->{$b} },
           down => sub { $src->{$b} <=> $src->{$a} },
         }
}

my %numbers = ( qw( a 5 c 4 d 1 ) );
my $num_sorts = sort_em( \%numbers );

print "UP:\n",
      join( "\n", map { "$_ $numbers{$_}" }
          sort { $num_sorts->{up}->() } keys %numbers ),
      "\nDOWN\n",
      join( "\n", map { "$_ $numbers{$_}" }
                  sort { $num_sorts->{down}->() } keys %numbers ),
      "\n";

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In reply to Re: Scoping issue when sorting with subroutines by Fletch
in thread Scoping issue when sorting with subroutines by Dave05

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