1 2 @interface NSString @end 3 4 @interface NSString (NSStringExtensionMethods) 5 + (id)stringWithUTF8String:(const char *)nullTerminatedCString; 6 @end 7 infoo(const char * cs)8 static inline void infoo(const char *cs) { 9 NSString *s = @(cs); 10 } 11