Hi, I am somewhat new to Boost Fusion and MPI, therefore I apologize if I am asking a trivial question (I wasn't able to the answer). I have a map of <mpl::int_<N>, boost::function> pairs. Each integer is a command, and based on that command I would like call some specific function. However, after debugging through the code, I have realized that the callbacks are not compile time. So, I was wondering if anybody could tell me if there is a way of modifying my code in such a manner that there is no run-time overhead associated with map indexing. Here is an example code. ////////10////////20////////30////////40////////50////////60////////70////////80 int main(int argc, char* argv[]) { boost::function<void (int)> _int_1_; boost::function<void (std::string)> _int_2_; _int_1_ = &fun_1; _int_2_ = &fun_2; { using boost::fusion::map; using boost::mpl::int_; boost::fusion::result_of::make_map<int_<1>, int_<2>, boost::function<void (int)>, boost::function<void (std::string)>
::type fmap;
boost::fusion::at_key< int_<1> >(fmap) = _int_1_; boost::fusion::at_key< int_<1> >(fmap)(5); }