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iOS Objective-C Basics (Retired) Introduction to Objective-C Inheritance

Mustafaa Tajuddin
Mustafaa Tajuddin
1,321 Points

Where are _center and _radius?

In the Shape.m implementation he sets _center equal to center and _radius equal to radius. I'm not understanding how it works because there is no instance of _center or _radius in the program. Does the @property automatically create both _radius and _center? I'm really confused. Any help will be appreciated.

JoeApp .Ltd
JoeApp .Ltd
1,601 Points

I'm imagining that part isn't actually used at the moment. You can take both those lines out of the program and they we still return the properties. The properties aren't using _center or _radius

Mustafaa Tajuddin
Mustafaa Tajuddin
1,321 Points

You are totally right! Thank you for your help.