my @array;
# Push the value 1 onto @array
push @array, 1;

# Push the values 3, 4 and 5 onto @array
push @array, 3, 4, 5;

# Push an array reference (containing two strings) onto @array
push @array, ['bill', 'bob'];

# Push a hash reference onto @array
push @array, {type=>'AND', inp_1=>'net_7', inp_2=>'net_8'};

# We can access the various values:
print $array[0], "\n";          # 1
print $array[2], "\n";          # 4
print $array[4][1], "\n";       # bob
print $array[5]{inp_1}, "\n";   # net_7