| 1 | #ifndef BOOST_IS_PLACEHOLDER_HPP_INCLUDED |
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| 2 | #define BOOST_IS_PLACEHOLDER_HPP_INCLUDED |
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| 3 | |
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| 4 | // MS compatible compilers support #pragma once |
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| 5 | |
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| 6 | #if defined( _MSC_VER ) && ( _MSC_VER >= 1020 ) |
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| 7 | # pragma once |
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| 8 | #endif |
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| 9 | |
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| 10 | |
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| 11 | // is_placeholder.hpp - TR1 is_placeholder metafunction |
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| 12 | // |
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| 13 | // Copyright (c) 2006 Peter Dimov |
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| 14 | // |
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| 15 | // Distributed under the Boost Software License, Version 1.0. |
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| 16 | // |
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| 17 | // See accompanying file LICENSE_1_0.txt or copy at |
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| 18 | // http://www.boost.org/LICENSE_1_0.txt |
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| 19 | |
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| 20 | |
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| 21 | namespace boost |
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| 22 | { |
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| 23 | |
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| 24 | template< class T > struct is_placeholder |
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| 25 | { |
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| 26 | enum _vt { value = 0 }; |
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| 27 | }; |
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| 28 | |
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| 29 | } // namespace boost |
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| 30 | |
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| 31 | #endif // #ifndef BOOST_IS_PLACEHOLDER_HPP_INCLUDED |
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| 32 | |
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