my %hash1 = (key1 => 'value1',
                key2 => 'value2');
my %hash1 = (key3 => 'value3',
                key4 => 'value4');
my %hash_gesamt = (%hash1,%hash2);
#oder
%hash1 = (%hash1,%hash2);

my @array = (1..4);
my @array2 = (5..11);
#entweder
my @array3 = (@array,@array2);
#oder
push(@array,@array2);