...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::move_upd::enable_up_moveconv_constr
// In header: <boost/move/unique_ptr.hpp> template<typename T, typename D, typename U, typename E, typename Type = bmupmu::nat> struct enable_up_moveconv_constr : public boost::move_upmu::enable_if_c< unique_moveconvert_assignable< T, D, U, E >::value &&unique_deleter_is_initializable< D, E >::value, Type > { };