#include <boost/fusion/include/vector.hpp>
#include <boost/fusion/include/invoke.hpp>
#include <boost/fusion/include/transform.hpp>


using namespace boost::fusion;

struct F{
    template<typename Sig>
    struct result;
    template<typename Self>
    struct result<Self (int const &)>{
        typedef void type;
    };
    void operator()(int const &) const{}
};

int t(int i){ return i; }

int main(){
    vector<int> const vec(5);
    invoke(F(),vec);
    invoke(F(),transform(vec,&t));
}