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## Struct template less

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

## Synopsis

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

    template<typename T, typename U>
    struct less :  proto::transform< less<T, U> > {
      // types
      typedef proto::expr< proto::tag::less, proto::list2< T, U > >       type;
      typedef proto::basic_expr< proto::tag::less, proto::list2< T, U > > proto_grammar;

      // member classes/structs/unions
      template<typename Expr, typename State, typename Data>
      struct impl :  proto::pass_through<less>::template impl<Expr, State, Data> {
      };
    };

## Description