Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
#include <boost/qvm/map_mat_vec.hpp>
namespace boost
{
namespace qvm
{
//Only enabled if: is_mat<A>::value
template <int C,class A>
-unspecified-return-type- col( A & a );
}
}
The expression col<C>(m) returns a view proxy that accesses column C of the matrix m as a vector.