%foo = (
         'x' => [
                  {
                    'a' => 1,
                    'b' => 2
                  },
                  100
                ]
       );
%bar = (
         'x' => $foo{'x'}
       );
%bim = (
         'x' => [
                  {
                    'a' => 1,
                    'b' => 2
                  },
                  100
                ]
       );
%bom = (
         'x' => [
                  {
                    'a' => 1,
                    'b' => 2
                  },
                  100
                ]
       );


##</code><code>##

use Data::Dumper;
use Storable qw(freeze thaw);

# Set up some complex variables, a hash within an array within a hash
my $x = {
	a => 1,
	b => 2,
};

my %foo = (
	x => [$x, 100],
);

# Copy it...
my %bar = %foo;

# Then deepcopy it...
my($bim, $bom) = deepcopy(\%foo, \%bar);

# Then lets have a look inside each variable... ;)
my $dump = Data::Dumper->new([\%foo, \%bar, $bim, $bom], [qw(*foo *bar *bim *bom)]);
print $dump->Dump;


# The sub itself
sub deepcopy {
	my @return;

	# This sub will take any number of references to a variable and
	# parse them all. The result is put into @result and returned as
	# an array
	while(@_) { push @return, thaw freeze shift; }
	return @return;
}