I like the idea of hiding the state/storage specific details from eyes
of subclasses. It makes irrelevant, in what format or where particular object holds its state. As long as you providing messages to access it, it could be anything.
Trygve
Reenskaug mailto: trygver@ifi.uio.no
Morgedalsvn. 5A http://heim.ifi.uio.no/~trygver
N-0378
Oslo Tel: (+47) 22 49 57 27
Norway