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Date: Mon, 15 Sep 2003 20:47:03 +0400
From: Dmytry Lavrov <m31415@mail.ru>
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Subject: Re: Is the Writing on the Wall for Ada?
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Date: 2003-09-15T20:47:03+04:00
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olehjalmar kristensen - Sun Microsystems - Trondheim Norway wrote:
> 
> >>>>> "RIE" == Robert I Eachus <rieachus@attbi.com> writes:
> 
> <snip>
> 
>     RIE> interfaces  and mix-ins.  But  type inheritance  cannot  be from  two
>     RIE> concrete parents,  no matter what  the language--one parent has  to be
>     RIE> abstract. So  anyone who condemns Ada  for not adding  what cannot be
>     RIE> done needs to get a life.
> 
> What do you mean by "concrete parents"?
> 
> class a {
> public:
>   void foo();
> };
> 
> class b {
> public:
>   void bar();
> };
> 
> class c: public a, public b{
> };
> 
> Works just fine, and there is nothing abstract about a and b. What's
> the problem?
> 
>     RIE> --
>     RIE>                                       Robert I. Eachus
> 
>     RIE> "As  far as  I'm  concerned,  war always  means  failure." --  Jacques
>     RIE> Chirac, President of France
> 
>     RIE> "As far as France is concerned, you're right." -- Rush Limbaugh


IMO,if there are difference between inheritance and having class inside
other  class(so called delegation),it's problem of bad language design.