...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::logical_not — A metafunction for generating logical_not expression types,
a grammar element for matching logical_not expressions, and
a PrimitiveTransform that dispatches to the
proto::pass_through<>
transform.
// In header: <boost/proto/traits.hpp> template<typename T> struct logical_not : proto::transform< logical_not<T> > { // types typedef proto::expr< proto::tag::logical_not, proto::list1< T > > type; typedef proto::basic_expr< proto::tag::logical_not, proto::list1< T > > proto_grammar; // member classes/structs/unions template<typename Expr, typename State, typename Data> struct impl : proto::pass_through<logical_not>::template impl<Expr, State, Data> { }; };