+(const char /*wchar_t*/ *)wcharFromString:(NSString *)string
{
return [string cStringUsingEncoding:NSUTF8StringEncoding];
}
Does it return char or wchar_t?
from the method name, it should return wchar_t, but why there is a comment around wchar_t return type?
Source is here:
That code just looks incorrect. They're claiming it does one thing, but it actually does another. The return type is const char *.
This method is not correct. It returns a const char *, encoded as a UTF8 string. That is a perfectly sensible way of getting a C string from an NSString, but nowhere here is anyone actually doing anything with wchar_ts.
wchar_t is a "wide char", and a pointer to it would be a "wide string" (represented by const wchar_t *). These are designed to precisely represent larger character sets, and can be two-byte wide character strings; they use a whole different variant set of string manipulation functions to do things with them. (Strings like this are very rarely seen in iOS development, for what it's worth.)
