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| 1 | // Copyright (C) 2003, Fernando Luis Cacciola Carballal. |
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| 2 | // |
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| 3 | // Use, modification, and distribution is subject to the Boost Software |
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| 4 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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| 5 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 6 | // |
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| 7 | // See http://www.boost.org/lib/optional for documentation. |
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| 8 | // |
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| 9 | // You are welcome to contact the author at: |
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| 10 | // fernando_cacciola@hotmail.com |
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| 11 | // |
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| 12 | #ifndef BOOST_NONE_T_17SEP2003_HPP |
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| 13 | #define BOOST_NONE_T_17SEP2003_HPP |
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| 14 | |
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| 15 | namespace boost { |
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| 16 | |
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| 17 | namespace detail { struct none_helper{}; } |
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| 18 | |
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| 19 | typedef int detail::none_helper::*none_t ; |
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| 20 | |
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| 21 | } // namespace boost |
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| 22 | |
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| 23 | #endif |
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| 24 | |
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