#!/usr/bin/perl

require 5.8.8;
use strict;
use fields;

use Benchmark 'cmpthese';
use Hash::Util 'lock_keys';
use Data::Dumper;
my @range = ('a'..'z');

# Define a perl 5.8 pseudo hash
my $inputs = fields::phash(\@range, [ map { [1,1] } @range ]);

$inputs->{c} = [ 0, 1 ];
$inputs->{f} = [ 2, 1 ];
$inputs->{g} = [ 0, 1 ];

my $phash = sub { map $inputs->{$_}, @range};

# Define an AofA with index conversion
my @iRange = (0..25);
my @array = map { [1, 1] } @iRange;

my $aoa = sub { map $array[ ord($_)-97 ], @range };

# Define a hash
my %HofA = map { $_=>[1, 1] } @range;
my $hoa = sub { map $HofA{$_}, @range };

# Define a locked hash

my %LHofA = map { $_=>[1, 1] } @range;
lock_keys(%LHofA, @range);
my $lhoa = sub { map $LHofA{$_}, @range };

cmpthese ( 10000, {     pseudohash => $phash,
                   Hash_of_Arrays => $hoa,
                      Locked_Hash => $lhoa,
                  Array_of_Arrays => $aoa, });
__END__

perl src/symarray.pl                                                 [8:54pm]
            (warning: too few iterations for a reliable count)
            (warning: too few iterations for a reliable count)
                   Rate   pseudohash Array_of_Arrays Hash_of_Arrays  Locked_Hash
pseudohash      19104/s           --            -12%           -36%         -37%
Array_of_Arrays 21695/s          14%              --           -27%         -29%
Hash_of_Arrays  29767/s          56%             37%             --          -2%
Locked_Hash     30476/s          60%             40%             2%           --