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

no instances variables

I notice that in the shape interface that there were only a method. There weren't an instance variable. Is it not necessary to have any instance variables when you have a method specific to that variable?

Jose Ramos
Jose Ramos
1,908 Points

Look at the Shape.m file. We're just returning a value of -1.