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[1022] | 1 | |
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| 2 | #ifndef BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED |
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| 3 | #define BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED |
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| 4 | |
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| 5 | // Copyright Aleksey Gurtovoy 2004 |
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| 6 | // Copyright Alexander Nasonov 2004 |
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| 7 | // |
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| 8 | // Distributed under the Boost Software License, Version 1.0. |
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| 9 | // (See accompanying file LICENSE_1_0.txt or copy at |
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| 10 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 11 | // |
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| 12 | // See http://www.boost.org/libs/mpl for documentation. |
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| 13 | |
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| 14 | // $Id: empty_sequence.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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| 15 | // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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| 16 | // $Revision: 49267 $ |
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| 17 | |
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| 18 | #include <boost/mpl/size_fwd.hpp> |
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| 19 | #include <boost/mpl/int.hpp> |
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| 20 | #include <boost/mpl/iterator_tags.hpp> |
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| 21 | |
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| 22 | namespace boost { namespace mpl { |
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| 23 | |
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| 24 | struct empty_sequence |
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| 25 | { |
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| 26 | struct tag; |
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| 27 | struct begin { typedef random_access_iterator_tag category; }; |
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| 28 | typedef begin end; |
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| 29 | }; |
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| 30 | |
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| 31 | template<> |
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| 32 | struct size_impl<empty_sequence::tag> |
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| 33 | { |
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| 34 | template< typename Sequence > struct apply |
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| 35 | : int_<0> |
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| 36 | { |
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| 37 | }; |
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| 38 | }; |
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| 39 | |
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| 40 | }} |
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| 41 | |
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| 42 | #endif // #ifndef BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED |
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