> The String structs can cache inside themselves the length and hash value the > first time such > values are computed (so each String is a struct 4 words long).
So it's not really immutable. It contains an immutable dynamic array that can be called "str", plus two mutable words. To access the underlying 8/16/32 bit units it's composed you can use the [] of the str attribute: "foo".str[i] Bye, bearophile
