#include <boost/qvm/vec_operations.hpp>
namespace boost
{
    namespace qvm
    {
        //Only enabled if: is_vec<A>::value
        template <class A>
        -unspecified-return-type- vref( A & a );
    }
}
An identity view proxy of a; that is, it simply accesses the elements of a.
This allows calling Boost QVM operations when a is of built-in type, for example a plain old C array.