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

On 3/22/07, Christian Henning wrote:

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;

I would think you need to use mpl::at_c here. I haven't test this, but how about: typedef mpl::find_ifmpl::_1,1, int> >::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 _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users