Thanks again for the excellent explanation. However, my script just got a bit more complicated. How do I get rid of two dupe keys per element? See what I naively tried: 
use Data::Dumper;
use strict;

my $AoH = [ { page => 'spring',
                 chap => 'spring'},
            { page => 'winter',
                 chap => 'winter'},
            { page => 'fall',
                 chap => 'fall'},
            { page => 'summer',
                 chap => 'summer'},
            { page => 'spring',
                 chap => 'spring'}
          ];

my %uniq = map { $_->{page} => ; $_->{chap} => 1 } @$AoH;
@$AoH = map { { page => $_ };{ chap=>$_ } } keys %uniq;

print Dumper ($AoH);

[download]
I doesn't work exactly the way it should and returns: 
$VAR1 = [
          {
            'chap' => 'summer'
          },
          {
            'chap' => 'winter'
          },
          {
            'chap' => 'fall'
          },
          {
            'chap' => 'spring'
          }
        ];

[download]

—Brad
"A little yeast leavens the whole dough."

In reply to Re^4: Is there better way to delete dups in an AoH? by bradcathey
in thread Is there better way to delete dups in an AoH? by bradcathey

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