Though I question the argument that hashes take up more space as a legitimate reason not to use them?

Do you? 

use strict;
use Devel::Size qw(total_size);

my %hash = ( 0 => 3,
             1 => 7,
             2 => 5,
             3 => 0,
             4 => 2,
           );

my @vals = qw(3 7 5 0 2);

print 'T1: ', total_size(\%hash),"\n";
print 'T2: ', total_size(\@vals),"\n";

[download]

30% less space for the array, same access speed. There need to be as many of these data structures in memory as possible. qed

Bye
 PetaMem     All Perl:   MT, NLP, NLU

In reply to Re^2: Sorting by Array values, obtaining indices by PetaMem
in thread Sorting by Array values, obtaining indices by PetaMem

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