I have a class with ivars for which there are accessors. I understand
that the importance of using a setter method (or to use
setValue:ForKey:) to set the ivar so that KVO operates. However, Is
there a compelling reason to use, in the methods of a class, a getter
method (or valueForKey:) versus directly accessing an ivar of the class?
I have re-read both the Key-Value Observing Programming Guide and Key-
Value Coding Programming Guide, and have not derived guidance from
them on this question. Perhaps I have missed something.
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