What does this mean in a code? @synthetize x = _x;

Question

For example:

@synthesize wheelImageView = _wheelImageView;

possible duplicate of [What exactly does @synthesize do?](http://stackoverflow.com/questions/3266467/what-exactly-does-synthesize-do) — kennytm, Aug 18 '10 at 14:45
Don't name instance variables with a leading underscore. Apple reserves that prefix for its own private methods/ivars. — JeremyP, Aug 18 '10 at 15:27
@mustIsignUp: Technically, yes, but it's probably a good idea to avoid for ivars too. — JeremyP, Aug 18 '10 at 16:03

score 4 · Answer 1 · answered Aug 18 '10 at 14:44

4

That will cause Objective-C to create a getter and setter named wheelImageView which is bound to the _wheelImageView instance variable.

@synthesize wheelImageView;

will create getters and setters bound to an ivar with the same name;

answered Aug 18 '10 at 14:44

Ferruccio

1 Answers1