This seems to be what you want:

use strict;
use warnings;
use Data::Dumper;
my %nhash;

my %main = ( 'main1' => {'m1sec1'=> ['A','B','C'],},
             'main2' => {'m2sec1'=> ['D','E','F'],},);

my %seed = ( 'seed' => {'seed1'=> ['X','Y','Z']},);
my @main1 = @{$main{'main1'}{'m1sec1'}};
my @main2 = @{$main{'main2'}{'m2sec1'}};
my @seed_a = @{$seed{'seed'}{'seed1'}};
my @m1sec1;
my @m2sec1;

for my $s (@seed_a)
    {
    push @m1sec1, "$_$s" for (@main1);
    push @m2sec1, "$_$s" for (@main2);
    }

$main{'main-join1'} = {'m1sec1' => [@m1sec1]};
$main{'main-join2'} = {'m2sec1' => [@m2sec1]};

print Dumper \%main;

[download]
$VAR1 = {
          'main-join1' => {
                            'm1sec1' => [
                                          'AX',
                                          'BX',
                                          'CX',
                                          'AY',
                                          'BY',
                                          'CY',
                                          'AZ',
                                          'BZ',
                                          'CZ'
                                        ]
                          },
          'main2' => {
                       'm2sec1' => [
                                     'D',
                                     'E',
                                     'F'
                                   ]
                     },
          'main1' => {
                       'm1sec1' => [
                                     'A',
                                     'B',
                                     'C'
                                   ]
                     },
          'main-join2' => {
                            'm2sec1' => [
                                          'DX',
                                          'EX',
                                          'FX',
                                          'DY',
                                          'EY',
                                          'FY',
                                          'DZ',
                                          'EZ',
                                          'FZ'
                                        ]
                          }
        };

[download]
Perl is Huffman encoded by design.

In reply to Re: Accumulating a Hash from Pairwise Comparison by GrandFather
in thread Accumulating a Hash from Pairwise Comparison by neversaint

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