epoc32/include/stdapis/boost/multi_index/detail/value_compare.hpp
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations
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/* Copyright 2003-2005 Joaquín M López Muñoz.
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 * Distributed under the Boost Software License, Version 1.0.
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 * (See accompanying file LICENSE_1_0.txt or copy at
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 * http://www.boost.org/LICENSE_1_0.txt)
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 *
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 * See http://www.boost.org/libs/multi_index for library home page.
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 */
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#ifndef BOOST_MULTI_INDEX_DETAIL_VALUE_COMPARE_HPP
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#define BOOST_MULTI_INDEX_DETAIL_VALUE_COMPARE_HPP
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#if defined(_MSC_VER)&&(_MSC_VER>=1200)
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#pragma once
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#endif
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#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
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#include <boost/call_traits.hpp>
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#include <functional>
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namespace boost{
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namespace multi_index{
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namespace detail{
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template<typename Value,typename KeyFromValue,typename Compare>
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struct value_comparison:std::binary_function<Value,Value,bool>
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{
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  value_comparison(KeyFromValue key_=KeyFromValue(),Compare comp_=Compare()):
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    key(key_),comp(comp_)
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  {
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  }
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  bool operator()(
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    typename call_traits<Value>::param_type x,
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    typename call_traits<Value>::param_type y)const
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  {
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    return comp(key(x),key(y));
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  }
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private:
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  KeyFromValue key;
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  Compare      comp;
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};
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} /* namespace multi_index::detail */
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} /* namespace multi_index */
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} /* namespace boost */
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#endif