3 Defines `boost::hana::detail::nested_than`.
5 @copyright Louis Dionne 2013-2016
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_NESTED_THAN_HPP
11 #define BOOST_HANA_DETAIL_NESTED_THAN_HPP
13 #include <boost/hana/detail/nested_than_fwd.hpp>
15 #include <boost/hana/config.hpp>
16 #include <boost/hana/functional/flip.hpp>
17 #include <boost/hana/functional/partial.hpp>
20 BOOST_HANA_NAMESPACE_BEGIN namespace detail {
22 template <typename Algorithm>
24 constexpr decltype(auto) nested_than_t<Algorithm>::operator()(X&& x) const
25 { return hana::partial(hana::flip(Algorithm{}), static_cast<X&&>(x)); }
27 } BOOST_HANA_NAMESPACE_END
29 #endif // !BOOST_HANA_DETAIL_NESTED_THAN_HPP