metric_traits.hpp

Go to the documentation of this file.

//=======================================================================
// Copyright (c) 2013 Piotr Wygocki
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
#ifndef PAAL_METRIC_TRAITS_HPP
#define PAAL_METRIC_TRAITS_HPP

#include "paal/utils/type_functions.hpp"

#include <type_traits>

namespace paal {
namespace data_structures {

template <typename Metric, typename _VertexType> struct _metric_traits {
    using VertexType = _VertexType;
    using DistanceType = puretype(std::declval<Metric>()(
        std::declval<VertexType>(), std::declval<VertexType>()));
};

template <typename Metric>
struct metric_traits : public _metric_traits<Metric, int> {};
}
}
#endif // PAAL_METRIC_TRAITS_HPP