...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::proto::mem_ptr
// In header: <boost/proto/traits.hpp> template<typename T, typename U> struct mem_ptr : proto::transform< mem_ptr<T, U> > { // types typedef proto::expr< proto::tag::mem_ptr, proto::list2< T, U > > type; typedef proto::basic_expr< proto::tag::mem_ptr, proto::list2< T, U > > proto_grammar; // member classes/structs/unions template<typename Expr, typename State, typename Data> struct impl : proto::pass_through<mem_ptr>::template impl<Expr, State, Data> { }; };