Re: Clean Object Class Design -- Circle/Ellipse

From: S Perryman <>
Date: Mon, 1 Oct 2001 10:51:27 +0100
Message-ID: <9p9ddf$grq8o$>

"James A. Robertson" <> wrote in message

> > I find it very telling that almost every OO pundit has found it
necessary to

> > write an apologia explaining why the very real and natural
> > relationship between circle and ellipse does not apply in OO.

> I find it telling that you worry about this at all. Go do some system
> development and see how often this problem actually arises.

The "problem" has arisen on virtually every system I've ever worked on using OO
techniques (10+ yrs) . Shame was it took me until last year to finally understand how to
identify/categorise/resolve the problem (ie by seeing the recurring pattern) without
even having to write a line of code.

Steven Perryman Received on Mon Oct 01 2001 - 11:51:27 CEST

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