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/* Copyright 2003-2008 Joaquin M Lopez Munoz.
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE_1_0.txt or copy at
 * See for library home page.


#if defined(_MSC_VER)&&(_MSC_VER>=1200)
#pragma once

#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/call_traits.hpp>
#include <functional>

namespace boost{

namespace multi_index{

namespace detail{

template<typename Value,typename KeyFromValue,typename Compare>
struct value_comparison:std::binary_function<Value,Value,bool>
    const KeyFromValue& key_=KeyFromValue(),const Compare& comp_=Compare()):

  bool operator()(
    typename call_traits<Value>::param_type x,
    typename call_traits<Value>::param_type y)const
    return comp(key(x),key(y));

  KeyFromValue key;
  Compare      comp;

} /* namespace multi_index::detail */

} /* namespace multi_index */

} /* namespace boost */