NSString Implementations TopicsInitializersinit(CString:)init(CString:encoding:)init(CString:encoding:)init(CString:length:)init(CStringNoCopy:length:freeWhenDone:)init(UTF8String:)init(UTF8String:)init(contentsOfURL:)init(contentsOfURL:encoding:)init(contentsOfURL:encoding:)init(contentsOfURL:usedEncoding:)init(contentsOfURL:usedEncoding:)