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From: dsp@bdal.de (=?ISO-8859-1?Q?=22Daniel_Kr=FCgler_=28ne_Spangenberg=29=22?=)
Newsgroups: comp.std.c++
Subject: Re: Suggestion: parent
Date: Wed, 11 May 2005 01:34:39 GMT
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Hello James Dennett,

James Dennett schrieb:

> This has been discussed a number of times here:
> http://groups-beta.google.com/group/comp.std.c++/browse_thread/thread/b=
cdfb80dbd695f38/cc4cde7f50c0fd8b?q=3Dcomp.std.C%2B%2B+parent&rnum=3D4#cc4=
cde7f50c0fd8b=20
>
> or
> http://groups-beta.google.com/group/comp.std.c++/browse_thread/thread/7=
45b8fd5e5fadce3/61758e00b849500f?q=3Dcomp.std.C%2B%2B+parent&rnum=3D6#617=
58e00b849500f=20
>
> would be examples.  Names suggested include "super" and "inherited".
> In the past the idea hasn't had all that much support, given that
> it's not hard to add a typedef manually and that generalizations to
> multiple inheritance are either restricted or complicated.=20

You are right, but to my opinion it would be quite useful to have an=20
extended typedef mechanism which allows to
define a typedef at the point of derivation (This has already been=20
proposed by others), e.g.

class B1 {...};
class B2 {...};

class Derived : public typedef B1 Base1, protected typedef B2 Base2 {
=2E
};

or

class Derived : public Base1 =3D B1, protected Base2 =3D B2 {
=2E
};

This extension has the advantage that complicated, template-based=20
inheritance relations can be expressed in a
consistent way.

Greetings from Bremen,

Daniel Kr=FCgler



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