Poll: Primary D version
SeeWebsiteForEmail at erdani.org
Sun May 23 06:33:32 PDT 2010
On 05/23/2010 12:30 AM, Rainer Deyke wrote:
> On 5/22/2010 23:16, Mike Parker wrote:
>> That's not the problem. The problem is this:
>> const(char)* toStringz(const(char) s);
>> There's no equivalent for:
>> char *toStringz(char s);
>> Hence the need to cast away const or use a wrapper for non-const char*
> There is no way to define this function with the correct semantics in D.
> 'toStringz' must append a null character to the string, therefore it
> cannot return a pointer to the original string data in the general case.
> If you pass the resulting string to a function that mutates it, then
> the changes will not be reflected in the original string.
> If you pass the resulting string to a function that does /not/ mutate
> it, then that function should be defined to take a 'const char *'.
There is a way, you could simply allocate a copy plus the \0 on the GC
heap. In fact that's what happens right now.
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