3 Defines `boost::hana::detail::wrong`.
5 @copyright Louis Dionne 2013-2017
6 Distributed under the Boost Software License, Version 1.0.
7 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
10 #ifndef BOOST_HANA_DETAIL_WRONG_HPP
11 #define BOOST_HANA_DETAIL_WRONG_HPP
13 #include <boost/hana/config.hpp>
15 #include <type_traits>
18 BOOST_HANA_NAMESPACE_BEGIN namespace detail {
19 //! @ingroup group-detail
20 //! Equivalent to a type-dependent `std::false_type`.
22 //! This is useful for making a static assertion that would otherwise
23 //! always fire up dependent on some template parameters.
28 //! @include example/detail/wrong.cpp
29 template <typename ...>
30 struct wrong : std::false_type { };
31 } BOOST_HANA_NAMESPACE_END
33 #endif // !BOOST_HANA_DETAIL_WRONG_HPP