Re: Clean Object Class Design -- Circle/Ellipse
Date: Sun, 19 Aug 2001 02:16:57 GMT
Message-ID: <3b7f1f5b.3698576682_at_news.grpvine1.tx.home.com>
On Thu, 18 Oct 2001 19:56:16 -0400, "Bob Badour" <bbadour_at_golden.net> wrote:
>>> The interesting question is whether or not he is irrelevant.
>>
>> Was anyone able to articulate any benefits of the subtype==subset
>>definition in the context of programming language theory,
>>rather than database theory?
>
>Why should anybody? You are the only one claiming that anyone has equated
>them.
I already gave you quotes from Date's article,
in which he claims that circles must be elipses
because that's the real world (like that's a real argument),
and that the axiomatization/specification of operations on circles and
elipses does not change the relationship of Circle being subtype of
Elipse.
Marc Gluch
Mindtap Inc.
Received on Sun Aug 19 2001 - 04:16:57 CEST