RE: viewpoints and multiple inheritance.
Dear Matthew,
At 10:05 AM +0200 6/21/00, West, Matthew MR SSI-GPEA-UK wrote:
>Dear Chris,
>
>Multiple inheritance (worked out bottom up rather than top down) is a matter
>of the discovery of common factors with a certain structure.
No, it isn't. This is precisely the kind of confusion that (perhaps)
derives from the Object-Oriented "code-sharing" paradigm (to
paraphrase John Thompson in this list) that I would like to avoid.
Perhaps these factors can lead one to consider arranging properties
in a taxonomy, but once you do it you have a universal assertion, not
a sharing of factors. Regardless of whatever they have in common, if
you say cat is-a pet then it means ALL cats are pets. THAT is what
it means, and nothing else. Single or multiple, it doesn't matter.
-Chris
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