AMDG Martin Apel <martin.apel <at> simpack.de> writes:
Sorry for the long delay. I was lucky to have a bank holiday yesterday here in southern Germany I tried your minor correction. However it still gives me the same compile errors when instantiating "at":
/usr/include/boost/mpl/next_prior.hpp:31: error: no type named `next' in `struct mpl_::void_' /usr/include/boost/mpl/aux_/at_impl.hpp:35: error: no type named `type' in `struct boost::mpl::advance<mpl_::void_, mpl_::int_<2> >'
The line causing this looks as follows: std::cout << at<JointMap, int_<2> >::type::value << "\n";
Really weird. Try qualifying all the names. I was able to compile this with 1.34.1: #include <boost/mpl/map.hpp> #include <boost/mpl/joint_view.hpp> #include <boost/mpl/at.hpp> #include <boost/mpl/insert.hpp> #include <boost/mpl/end.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/copy.hpp> #include <iostream> using namespace boost::mpl; typedef map<pair<int_<1>, int_<42> >, pair<int_<2>, int_<43> >, pair<int_<3>, int_<44> >
Map1;
typedef map<pair<int_<4>, int_<44> >, pair<int_<5>, int_<45> >, pair<int_<6>, int_<46> >
Map2;
typedef copy< joint_view<Map1,Map2>, inserter <map0<>, insert<_1, end<_1>, _2> >
::type JointMap;
int main() { std::cout << at<JointMap, int_<2> >::type::value << "\n"; } In Christ, Steven Watanabe