Re^3: Value into array

in reply to Re^2: Value into array
in thread Value into array

From your initial description I believed also as other fellow Monks that you are looking for ARRAYS OF ARRAYS. Based on your updated description it looks that you are looking for HASHES OF ARRAYS.

Sample of code below:

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;

my %HoA = ( N1 => [undef],
        N2 => [undef],
        N3 => [undef],
        N4 => [undef] );
print Dumper \%HoA;

# add to an existing row
push @{ $HoA{"N1"} }, "A", "B";
print Dumper \%HoA;

__END__

$ perl test.pl
$VAR1 = {
          'N3' => [
                    undef
                  ],
          'N2' => [
                    undef
                  ],
          'N1' => [
                    undef
                  ],
          'N4' => [
                    undef
                  ]
        };
$VAR1 = {
          'N3' => [
                    undef
                  ],
          'N2' => [
                    undef
                  ],
          'N1' => [
                    undef,
                    'A',
                    'B'
                  ],
          'N4' => [
                    undef
                  ]
        };
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