Re: C leren voor C++

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#9153

From: Gerrit Cornelis
Date: Mon, 13 May 2002 10:28

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timvw <timvw@kotnet.org> wrote in message
news:abmm1m$jpmo3$1@ID-104709.news.dfncis.de...
>
> "LuWi" <no@mail.com> wrote in message
> news:imjtdugl01mh9fvrg2vkg8uk3ar736a1m8@4ax.com...
> > On Sun, 12 May 2002 19:43:57 +0200, "timvw" <timvw@kotnet.org> wrote:
> >
> > >
> > >dacht dat overerving (in java) als volgt werd geimplementeerd:
> > >class A { .... }
> > >
> > >class B extends A {
> > >    A internalA;
> > >   ......//extensions
> > > }
> > >
> > >denk dat je in c met een struct ook wel kan realiseren.....
> > >
> > >
> >
> > Ik weet ook hoe dat in Java, c++ of C# werkt, maar ik zou wel eens
> > willen zien hoe je dat in c doet...!
>
> struct A {
>  .......
> }
>
> struct B {
>   struct A *internal;
>   .......
> }
>

dit noemen we compositie en geen overerving. B heeft niet de interface van A
en is geen subtype van A.
laat staan dat je late binding hebt op deze manier.

Gerrit

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Subject: Re: C leren voor C++
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