Here is one good way to do it, but as always, tim toady.

use warnings;
use strict;
use Data::Dumper;

$Data::Dumper::Sortkeys=1;

my $data = {
          'DATE' => '2013-04-25',
          'TW' => '1',
          'REF' => '1234567',
          'ACC' => '33456790'
        };

$data = {%$data, DOC => 'EMAIL'};

print Dumper($data);

[download]

Alternatively, to add the second hash to the first, do something like this:

use warnings;
use strict;
use Data::Dumper;

$Data::Dumper::Sortkeys=1;

my $data = {
          'DATE' => '2013-04-25',
          'TW' => '1',
          'REF' => '1234567',
          'ACC' => '33456790'
        };
my $new = {
          DOC => 'EMAIL' ## NOTE: no need for quotes on thing
                         ##       to the left of `=>'
        };

$data = {%$data, %$new};

print Dumper($data);

[download]

In reply to Re: Adding an new element to array. by protist
in thread Adding an new element to array. by Anonymous Monk

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