Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.

Struct template logical_and

boost::proto::logical_and — A metafunction for generating logical-and expression types, a grammar element for matching logical-and expressions, and a PrimitiveTransform that dispatches to the proto::pass_through<> transform.


// In header: <boost/proto/traits.hpp>

template<typename T, typename U> 
struct logical_and :  proto::transform< logical_and<T, U> > {
  // types
  typedef proto::expr< proto::tag::logical_and, proto::list2< T, U > > type;           
  typedef type                                                         proto_base_expr;
  template<typename Expr, typename State, typename Data> 
  struct impl :
     proto::pass_through<logical_and>::template impl<Expr, State, Data>