Re: [Boost-users] [mpl] Using at_c within find_if

From: Christian Henning (chhenning_at_[hidden])
Date: 2007-03-28 10:47:33

Thanks a lot for your hint. It works perfectly. Here is the code:

#include "boost/mpl/vector.hpp"
#include <boost/mpl/find_if.hpp>
#include <boost/mpl/at.hpp>

using namespace std;
using namespace boost;

typedef mpl::vector<char, char> vec_1;
typedef mpl::vector<char, int> vec_2;
typedef mpl::vector<double, int> vec_3;

typedef mpl::vector<vec_1, vec_2, vec_3> mat;

typedef mpl::find_if< mat, is_same< mpl::at< mpl::_1, mpl::int_<0> >,
double> >::type iter;

int _tmain(int argc, _TCHAR* argv[])
{
   BOOST_STATIC_ASSERT(( is_same< mpl::deref<iter>::type, vec_3 >::value ));

   return 0;
}