Motivation

Funnel access to an object’s properties through methods to hide implementation details and confine code related to memory management to those methods. Cocoa’s reference counted memory management provides a relatively simple pragmatic solution to the difficult problem of memory management, but patterns must be applied to use reference counting correctly, and accessors play a pivotal role in keeping memory management simple.

Enable use of higher level Cocoa technologies like Bindings, Key Value Coding, and key Value Observing with your custom classes.