#include <boost/fusion/include/as_vector.hpp>
#include <boost/fusion/include/remove_if.hpp>

namespace mpl = boost::mpl;
namespace fusion = boost::fusion;

struct element
{
   typedef mpl::false_ type;
};

template <typename T>
struct meta_func
{
   typedef typename T::type type;
};

int main()
{
   fusion::vector<element, element> e;
   fusion::as_vector(fusion::remove_if<meta_func<mpl::_1> >(e));
}