[Boost-users] [fusion] How to use transform Metafunction?

Hi there, since there is no example in the docs and no test for it. I was wondering how to use fusion's transform metafunction. Here is what I want to do. template <typename T> struct add_vector { typedef std::vector<T> type; }; struct A; struct B; struct C; int main() { typedef fusion::list< A, B, C > types; typedef fusion::transform< types, add_vector<> >::type vector_of_types; return 0; } The compiler is complaining that there are too few parameters for add_vector. In MPL you would just add _1 as the template parameter. But this doesn't work for fusion. So, how do I use it? Thanks, Christian