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41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
/*=============================================================================
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Copyright (c) 2009 Christopher Schmidt
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef BOOST_FUSION_CONTAINER_MAP_DETAIL_VALUE_OF_IMPL_HPP
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#define BOOST_FUSION_CONTAINER_MAP_DETAIL_VALUE_OF_IMPL_HPP
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/sequence/intrinsic/value_at.hpp>
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#include <boost/type_traits/is_const.hpp>
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namespace boost { namespace fusion { namespace extension
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{
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template <typename>
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struct value_of_impl;
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template <>
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struct value_of_impl<map_iterator_tag>
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{
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template <typename It>
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struct apply
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{
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typedef typename
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result_of::value_at<
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typename mpl::if_<
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is_const<typename It::seq_type>
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, typename It::seq_type::storage_type const
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, typename It::seq_type::storage_type
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>::type
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, typename It::index
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>::type
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type;
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};
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};
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}}}
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#endif
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