From: David Abrahams (david.abrahams_at_[hidden])
Date: 2001-11-26 08:36:32
This will work on most compilers, but it has other problems (aside from
"::template ..."): there's no way to specialize is<T>... to support new type
relationships, since all of its nested classes must be declared within the
----- Original Message -----
From: "Daniel Frey" <daniel.frey_at_[hidden]>
Sent: Monday, November 26, 2001 7:20 AM
Subject: Re: [boost] Re: A couple of issues in submitting typelists to boost
Peter Dimov wrote:
> From: "Andrei Alexandrescu" <andrewalex_at_[hidden]>
> > Yes, but is_public_base suffers of the "who's first and who's second"
> > problem. Per public demand, I changed super_subclass to base_derived. So
> > base_derived<T, U>::value is true is T is the base and U is the derived.
> is_a<D, B>::value ?
I like Vesa's approach:
is< D >::derived_from< B >::value
is< B >::base_of< D >::value
Is it possible to make this work on most compilers?
-- Daniel Frey aixigo AG - financial training, research and technology Schloß-Rahe-Straße 15, 52072 Aachen, Germany fon: +49 (0)241 936737-42, fax: +49 (0)241 936737-99 eMail: daniel.frey_at_[hidden], web: http://www.aixigo.de Info: http://www.boost.org Unsubscribe: <mailto:boost-unsubscribe_at_[hidden]> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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