From: Paul Brannan <pbrannan@...>
Date: 2003-02-11T23:54:00+09:00
Subject: Re: inheriting from base classes

On Tue, Feb 11, 2003 at 11:50:19PM +0900, Paul Brannan wrote:
> Providing checks like this is ugly and unproductive, particularly
> since it would change the behavior of the base class.

Let me elaborate on this.  The behavior of Array does not change, but
if a method in Array depends on one of its method having a particular
behavior, and you change that method in the derived class to have
similar but different behavior, you are likely to break something
(perhaps silently -- your unit tests might pass, even though you have a
bug that won't show up for quite some time).

Paul