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From: lsr@Apple.COM (Larry Rosenstein)
Newsgroups: comp.lang.c++
Subject: Re: Functions not defined in base class
Message-ID: <1673@internal.Apple.COM>
Date: 5 May 89 19:00:02 GMT
References: <897@servax0.ESSEX.AC.UK>
Sender: usenet@Apple.COM
Organization: Objects-R-Us,  Apple Computer, Inc.
Lines: 15

In article <897@servax0.ESSEX.AC.UK> goss@ese.essex.ac.uk (Gossain Sanjiv 
(5N.7.10)) writes:
> I have a particular application where I am representing a group
> of related classes by an abstract class. Now, I require that

A good thing to do, assuming you haven't already, is to make the 
constructor for the abstract class protected.  Then clients cannot create 
instances of the abstract classes, only of the concrete classes (which 
have public constructors).  

Larry Rosenstein, Apple Computer, Inc.
Object Specialist

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