Re: virtual operator+

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#82

From: Robert W Hand
Date: Thu, 16 May 2002 23:23

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On Thu, 16 May 2002 21:31:31 GMT, "Daniel T." <notdanielt3@gte.net>
wrote:

>"Christopher Deli" <christopher@delinfo.com> wrote:
>
>>Hello!
>>
>>I have a problem which I'd need some help with, please.
>>If I have one class A which is inherited by another class B i.e. class B :
>>public class A and I would like to make a virtual operator+ in both class A

>What is op+ supposed to return, an "A" object or a "B" object?

Aren't the two return types A and B covariant?  The one in the A class
would return an A object, and the one in the B class would return a B
object.  

Best wishes,

Bob

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From: Robert W Hand <rwhand@NOSPAMoperamail.com>
Newsgroups: alt.comp.lang.learn.c-c++,att.lang.c++,comp.lang.c++
Subject: Re: virtual operator+
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