Re: LSP Was: Mixing OO and DB
From: Robert Martin <unclebob_at_objectmentor.com>
Date: Fri, 22 Feb 2008 11:16:57 -0600
Message-ID: <2008022211165795335-unclebob_at_objectmentorcom>
Date: Fri, 22 Feb 2008 11:16:57 -0600
Message-ID: <2008022211165795335-unclebob_at_objectmentorcom>
On 2008-02-22 03:37:45 -0600, S Perryman <q_at_q.com> said:
> And for practical demonstration, I can take the apocrypthal Circle/Ellipse
> problem, and show that Circle is not a Liskov/Wing subtype of Ellipse
> without ever needing to see any program that may be using Circle or Ellipse
> types.
-- Robert C. Martin (Uncle Bob) | email: unclebob_at_objectmentor.com Object Mentor Inc. | blog: www.butunclebob.com The Agile Transition Experts | web: www.objectmentor.com 800-338-6716 |Received on Fri Feb 22 2008 - 18:16:57 CET