string types: const(char)[] and cstring

[Walter Bright]

Bruno Medeiros wrote:
> Walter Bright wrote:
>> Derek Parnell wrote:
>>> What is the syntax for an immutable array of mutable characters?
>>
>> There isn't one. Such a construct is appealing in the abstract, but I 
>> haven't run across a legitimate use for it yet.
> 
> What, there isn't one? Isn't that what final does? Like this:
>   final char[] charar = new char[](20);
> 
>   charar[1] = 'x'; // Allowed
>   charar = new char[](20); // Not allowed
>   charar.length = 10; // Not allowed

Final only works at the outermost level. There is no way to have a 
mutable pointer to a const pointer to mutable data.