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21 lines
827 B
21 lines
827 B
/*============================================================================= |
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Copyright (c) 2016 Paul Fultz II |
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using.hpp |
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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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#ifndef BOOST_HOF_GUARD_USING_HPP |
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#define BOOST_HOF_GUARD_USING_HPP |
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#include <boost/hof/config.hpp> |
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#if BOOST_HOF_HAS_TEMPLATE_ALIAS |
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#define BOOST_HOF_USING(name, ...) using name = __VA_ARGS__ |
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#define BOOST_HOF_USING_TYPENAME(name, ...) using name = typename __VA_ARGS__ |
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#else |
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#define BOOST_HOF_USING(name, ...) struct name : std::enable_if<true, __VA_ARGS__>::type {} |
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#define BOOST_HOF_USING_TYPENAME(name, ...) struct name : __VA_ARGS__ {} |
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#endif |
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#endif
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