Boost QVM

qref

#include <boost/qvm/q.hpp>

namespace boost
{
    namespace qvm
    {
        //Only enabled if: is_q<A>::value
        template <class A>
        -unspecified-return-type- qref( A & a );
    }
}

Returns:

An identity view proxy of a; that is, it simply accesses the elements of a.

See also: boost/qvm/q.hpp | boost/qvm/q_traits_array.hpp