Question

I have a integer variable, for example, timeSignature, declared it in .h file, and synthesized a pair of setter/getter methods:

in .h:

@interface Metronome : NSObject {
    int timeSignature;
}
@property (nonatomic) int timeSignature;

in .m:

@synthesize timeSignature;

I wish to override the setter method: when user set a new value to it, it does something else as well as changing to new value:

- (void) setTimeSignature:(int)timeSignature {
    self.timeSignature = timeSignature; //hides instance variable warning at this line
    [self doesSomethingElse];
}

And heres the problem, the local variable and the instance variable have the same name.

How can I avoid this?

Answer 1

Name your ivar _timeSignature and make @synthesize timeSignature = _timeSignature;