# a hash holding a reference to the array
my %hash;
print '$aref is ' . $aref ."\n";
$hash{'aref'} = $aref;
print '$hash{\'aref\'} is ' . $hash{'aref'}. "\n";

# get h_ version of array reference
my $h_aref = $hash{'aref'};
print 'array length is ' . scalar(@$h_aref) . "\n";
push @$h_aref, 'value 2';
print 'after 2nd push array length is ' . scalar(@$h_aref) . "\n";
print 'after 2nd push [0] array value is [' . $$h_aref[0] . "]\n";
print 'after push [1] array value is [' . $$h_aref[1] . "]\n";

# now try to access without intermediate $h_aref
#print 'array length is ' . scalar(@$hash{'aref'}) . "\n";   # error
#print 'array length is ' . scalar(@$$hash{'aref'}) . "\n";  # error