...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::function — A metafunction for generating function-call expression types, a grammar element for
matching function-call expressions, and
a PrimitiveTransform
that dispatches to the
proto::pass_through<>
transform.
// In header: <boost/proto/traits.hpp> template<typename... A> struct function : proto::transform< function<A...> > { // types typedef proto::expr< proto::tag::function, proto::listN< A... > > type; typedef type proto_base_expr; // member classes/structs/unions template<typename Expr, typename State, typename Data> struct impl : proto::pass_through<function>::template impl<Expr, State, Data> { }; };