less_concept.h

// Description: Less concept
// Detail: Strict weak order
// Documentation: strict_weak_order.txt

#ifndef PASTELSYS_LESS_CONCEPT_H
#define PASTELSYS_LESS_CONCEPT_H

#include "pastel/sys/predicate/predicate_concept.h"

namespace Pastel
{

    namespace Less_Concept
    {

        //! Strict weak order
        class Less
        : public Predicate_Concept::Predicate
        {
        public:
            //! Returns whether left < right under a strict weak order <.
            /*!
           A strict weak order is an irreflexive and transitive relation
           for which incomparability is transitive.
           */
            bool operator()(
                const UserDefinedType& left, 
                const UserDefinedType& right) const;
        };

    }

}

#endif