dir of float prices = (eggs@2.20, milk@1.95, coffee@9.95);
for (key@val in prices)
    print("$key $val");
array of string a = ("zero", "one", "two", "three", "four");
for (key@val in a)
    print("$key $val");
for (key@val in "0123456789")
    print("$key $val");