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42 lines
1.2 KiB
42 lines
1.2 KiB
/*============================================================================= |
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Copyright (c) 2001-2011 Joel de Guzman |
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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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#if !defined(FUSION_FRONT_09162005_0343) |
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#define FUSION_FRONT_09162005_0343 |
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#include <boost/fusion/sequence/intrinsic_fwd.hpp> |
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#include <boost/fusion/sequence/intrinsic/begin.hpp> |
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#include <boost/fusion/iterator/deref.hpp> |
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#include <boost/mpl/bool.hpp> |
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namespace boost { namespace fusion |
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{ |
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struct fusion_sequence_tag; |
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namespace result_of |
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{ |
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template <typename Sequence> |
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struct front |
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: result_of::deref<typename result_of::begin<Sequence>::type> |
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{}; |
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} |
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template <typename Sequence> |
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inline typename result_of::front<Sequence>::type |
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front(Sequence& seq) |
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{ |
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return *fusion::begin(seq); |
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} |
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template <typename Sequence> |
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inline typename result_of::front<Sequence const>::type |
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front(Sequence const& seq) |
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{ |
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return *fusion::begin(seq); |
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} |
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}} |
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#endif
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