Re: [Boost-users] [mpl] at_c type compiler error

From: Chris Weed (chrisweed_at_[hidden])
Date: 2007-10-18 10:12:36

On 10/18/07, Vinzenz 'evilissimo' Feenstra <evilissimo_at_[hidden]> wrote:
> Chris Weed schrieb:
> > Hi,
> > I can't figure out why the following code generates a compile error
> > with gcc 3.4:
> >
> > #include <boost/mpl/vector_c.hpp>
> > #include <boost/mpl/at.hpp>
> > #include <boost/tuple/tuple.hpp>
> >
> > template<typename E,typename T>
> > typename boost::tuples::element<boost::mpl::at_c<E,0>::type::value,T>::type
> > foo(E e,T t)
> > {
> >   return t.get<0>();
> > }
> >
> > int main()
> > {
> >   typedef boost::mpl::vector_c<int,0,1> elements;
> >   boost::tuple<int> t(1);
> >   foo(elements(),t);
> > }
> >
> Hi,
>
> shouldn't it be:
>
>   template<typename E,typename T>
>   typename boost::tuples::element<typename
> boost::mpl::at_c<E,0>::type::value,T>::type
>   foo(E e,T t)
>   {
>     return t.get<0>();
>   }
>
> Regards,
> Vinzenz

That doesn't work either.
Chris