You can use Storable::dclone to copy Arrays of Arrays (and other data structures): 

use Storable qw(dclone);
my @a = ([2, 3], [5, 6]);
my $copy_ref = dclone(\@a);
my @copy = @{ dclone(\@a) };

[download]

(Untested, no perl available atm :()

Perl 6 in German

In reply to Re: Questions about using array-of-arrays by moritz
in thread Questions about using array-of-arrays by jep1978

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