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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2014-2014
//
// 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)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTRUSIVE_DETAIL_EMPTY_NODE_CHECKER_HPP
#define BOOST_INTRUSIVE_DETAIL_EMPTY_NODE_CHECKER_HPP
#if defined(_MSC_VER)
# pragma once
#endif
namespace boost {
namespace intrusive {
namespace detail {
template<class ValueTraits>
struct empty_node_checker
{
typedef ValueTraits value_traits;
typedef typename value_traits::node_traits node_traits;
typedef typename node_traits::const_node_ptr const_node_ptr;
struct return_type {};
void operator () (const const_node_ptr&, const return_type&, const return_type&, return_type&) {}
};
} //namespace detail{
} //namespace intrusive{
} //namespace boost{
#endif //BOOST_INTRUSIVE_DETAIL_EMPTY_NODE_CHECKER_HPP
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