Method overloading in Objective-C?

Correct, objective-C does not support method overloading, so you have to use different method names.

Note, though, that the "method name" includes the method signature keywords (the parameter names that come before the ":"s), so the following are two different methods, even though they both begin "writeToFile":

-(void) writeToFile:(NSString *)path fromInt:(int)anInt;
-(void) writeToFile:(NSString *)path fromString:(NSString *)aString;

(the names of the two methods are "writeToFile:fromInt:" and "writeToFile:fromString:").