Why be more cryptic that you need to be?
Doing so will not be more efficient. 
#!/usr/bin/perl -w
use strict;

my $animals = {
               gnu => {
                       humps => 0,
                       mascot_for => 'emacs',
                      },
               dromedary => {
                             humps => 1,
                             mascot_for => 'perl',
                            },
               camel => {
                         humps => 2,
                         mascot_for => 'perl',
                        },
              };


foreach my $critter (keys %$animals) 
{
   print "$critter "; #camel gnu dromedary
}
print "\n";

foreach my $critter (keys %$animals) #sort if you want to
{
   print "$animals->{$critter}{humps} "; #2 0 1 
}
print "\n";

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In reply to Re^3: Extracting values from nested hashrefs by Marshall
in thread Extracting values from nested hashrefs by loris

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