Re: [Boost-users] [mpl][fusion] Metafunction for extracting a type from a map

Thanks Chris for the quick response. I was trying find_if but I don't think it provides the whole solution. Below is the minimal example, that doesn't compile since the static assertion fires. #include "boost/mpl/vector.hpp" #include using namespace std; using namespace boost; typedef mpl::vector vec_1; typedef mpl::vector vec_2; typedef mpl::vector mat; typedef mpl::find_if >::type iter; int _tmain(int argc, _TCHAR* argv[]) { BOOST_STATIC_ASSERT(( is_same< mpl::deref<iter>::type, vec_2 >::value )); return 0; } Do you know what I'm missing here? Christian