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30 lines
688 B
C++
30 lines
688 B
C++
// Copyright Daniel Wallin, David Abrahams 2005. Use, modification and
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// distribution is subject to the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_PARAMETER_VOID_050329_HPP
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#define BOOST_PARAMETER_VOID_050329_HPP
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namespace boost { namespace parameter {
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// A placemarker for "no argument passed."
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// MAINTAINER NOTE: Do not make this into a metafunction
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struct void_ {};
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namespace aux
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{
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inline void_& void_reference()
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{
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static void_ instance;
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return instance;
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}
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} // namespace aux
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}} // namespace boost::parameter
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#endif // BOOST_PARAMETER_VOID_050329_HPP
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