...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_ptr
// In header: <boost/move/unique_ptr.hpp> template<typename T, typename FromPointer, typename ThisPointer, typename Type = bmupmu::nat> struct enable_up_ptr : public boost::move_upmu::enable_if_c< is_unique_ptr_convertible< bmupmu::is_array< T >::value, FromPointer, ThisPointer >::value, Type > { };