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

From: Vinzenz 'evilissimo' Feenstra (evilissimo_at_[hidden])
Date: 2007-10-18 09:51:44

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