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34 lines
861 B
C++
34 lines
861 B
C++
/*!
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@file
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Defines `boost::hana::detail::wrong`.
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@copyright Louis Dionne 2013-2017
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_HANA_DETAIL_WRONG_HPP
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#define BOOST_HANA_DETAIL_WRONG_HPP
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#include <boost/hana/config.hpp>
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#include <type_traits>
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BOOST_HANA_NAMESPACE_BEGIN namespace detail {
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//! @ingroup group-detail
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//! Equivalent to a type-dependent `std::false_type`.
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//!
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//! This is useful for making a static assertion that would otherwise
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//! always fire up dependent on some template parameters.
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//!
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//!
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//! Example
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//! -------
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//! @include example/detail/wrong.cpp
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template <typename ...>
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struct wrong : std::false_type { };
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} BOOST_HANA_NAMESPACE_END
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#endif // !BOOST_HANA_DETAIL_WRONG_HPP
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