Hide instance variable from header file in Objective C

Question

I came across a library written in Objective C (I only have the header file and the .a binary). In the header file, it is like this:

@interface MyClass : MyS         


        

Answer 1

Two possibilities:

1. It could be taking advantage of the modern runtime's ability to synthesize instance variables, as bbum suggested.
2. The property might not have an underlying instance variable in that class. Properties do not necessarily have a one-to-one mapping with instance variables.