I thing the first problem can be solved using Boost.Fusion: // the names of the types in the application typedef char int8; typedef short int16; typedef int int32; typedef unsigned char uint8; typedef unsigned short uint16; typedef unsigned int uint32; typedef float float32; typedef double float64; // an mpl vector containing all the types typedef boost::mpl::vector<int8, int16, int32, uint8, uint16, uint32, float32, float64> types; // a typedef of a fusion map with a variable for each type typedef boost::fusion::map< boost::fusion::pair<int8, my_type_depending_on<int8> > boost::fusion::pair<int16, my_type_depending_on<int16> > boost::fusion::pair<int32, my_type_depending_on<int32> > boost::fusion::pair<uint8, my_type_depending_on<uint8> > boost::fusion::pair<uint16, my_type_depending_on<uint16> > boost::fusion::pair<uint32, my_type_depending_on<uint32> > boost::fusion::pair<float32, my_type_depending_on<float32> > boost::fusion::pair<float64, my_type_depending_on<float64> >
map_type;
// the variables map_type variables; // use a variable at<int8>(variables) However, there is a lot of redundancy in the boost::fusion::map typedef. Is there any way to obtain the boost::fusion::map typedef automatically from the boost::mpl::vector? I have the following related problem. // an mpl vector containing all the size types typedef boost::mpl::vector<uint8, uint16, uint32> size_types; // an mpl vector containing all the scalar types typedef boost::mpl::vector<int8, int16, int32, uint8, uint16, uint32, float32, float64> scalar_types; now i need a variable for each combination of size_types and scalar types. Something like typedef boost::fusion::map< boost::fusion::pair<uint8, int8, my_type_depending_on<uint8, int8> > boost::fusion::pair<uint8, int16, my_type_depending_on<uint8, int16> > boost::fusion::pair<uint8, int32, my_type_depending_on<uint8, int32> > boost::fusion::pair<uint8, uint8, my_type_depending_on<uint8, uint8> > boost::fusion::pair<uint8, uint16, my_type_depending_on<uint8, uint16> > boost::fusion::pair<uint8, uint32, my_type_depending_on<uint8, uint32> > boost::fusion::pair<uint8, float32, my_type_depending_on<uint8, float32> > boost::fusion::pair<uint8, float64, my_type_depending_on<uint8, float64> > boost::fusion::pair<uint16, int8, my_type_depending_on<uint16, int8> > boost::fusion::pair<uint16, int16, my_type_depending_on<uint16, int16> > boost::fusion::pair<uint16, int32, my_type_depending_on<uint16, int32> > boost::fusion::pair<uint16, uint8, my_type_depending_on<uint16, uint8> > boost::fusion::pair<uint16, uint16, my_type_depending_on<uint16, uint16> > boost::fusion::pair<uint16, uint32, my_type_depending_on<uint16, uint32> > boost::fusion::pair<uint16, float32, my_type_depending_on<uint16, float32>
boost::fusion::pair<uint16, float64, my_type_depending_on<uint16, float64> boost::fusion::pair<uint32, int8, my_type_depending_on<uint32, int8> > boost::fusion::pair<uint32, int16, my_type_depending_on<uint32, int16> > boost::fusion::pair<uint32, int32, my_type_depending_on<uint32, int32> > boost::fusion::pair<uint32, uint8, my_type_depending_on<uint32, uint8> > boost::fusion::pair<uint32, uint16, my_type_depending_on<uint32, uint16> > boost::fusion::pair<uint32, uint32, my_type_depending_on<uint32, uint32> > boost::fusion::pair<uint32, float32, my_type_depending_on<uint32, float32>
boost::fusion::pair<uint32, float64, my_type_depending_on<uint32, float64>
map_type;
Again, I want to obtain the boost::fusion::map typedef automatically from the two boost::mpl::vectors. -- Ares Lagae Computer Graphics Research Group, Katholieke Universiteit Leuven http://www.cs.kuleuven.be/~ares/