If you eschew the C for loop where possible, and don't mind destroying the source array, then you can:

use strict;
use warnings;
use Data::Dump::Streamer;

my @in = (one => 1, two => 2, two => '2.003');
my %hash;

while (@in > 1) {
    my ($key, $value) = splice @in, 0, 2;
    
    push @{$hash{$key}}, $value;
}

Dump \%hash;

[download]

Prints:

$HASH1 = {
           one => [ 1 ],
           two => [
                    2,
                    2.003
                  ]
         };

[download]
True laziness is hard work

In reply to Re: my array is almost a hash, but keys are not unique. by GrandFather
in thread my array is almost a hash, but keys are not unique. by Boldra

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