[ceph.git] / ceph / src / boost / libs / hana / include / boost / hana / detail / nested_than.hpp

/*!
@file
Defines `boost::hana::detail::nested_than`.

@copyright Louis Dionne 2013-2016
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
 */

#ifndef BOOST_HANA_DETAIL_NESTED_THAN_HPP
#define BOOST_HANA_DETAIL_NESTED_THAN_HPP

#include <boost/hana/detail/nested_than_fwd.hpp>

#include <boost/hana/config.hpp>
#include <boost/hana/functional/flip.hpp>
#include <boost/hana/functional/partial.hpp>


BOOST_HANA_NAMESPACE_BEGIN namespace detail {
    //! @cond
    template <typename Algorithm>
    template <typename X>
    constexpr decltype(auto) nested_than_t<Algorithm>::operator()(X&& x) const
    { return hana::partial(hana::flip(Algorithm{}), static_cast<X&&>(x)); }
    //! @endcond
} BOOST_HANA_NAMESPACE_END

#endif // !BOOST_HANA_DETAIL_NESTED_THAN_HPP
Commit	Line	Data
7c673cae FG	1	/*!
	2	@file
	3	Defines `boost::hana::detail::nested_than`.
	4
	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)
	8	*/
	9
	10	#ifndef BOOST_HANA_DETAIL_NESTED_THAN_HPP
	11	#define BOOST_HANA_DETAIL_NESTED_THAN_HPP
	12
	13	#include <boost/hana/detail/nested_than_fwd.hpp>
	14
	15	#include <boost/hana/config.hpp>
	16	#include <boost/hana/functional/flip.hpp>
	17	#include <boost/hana/functional/partial.hpp>
	18
	19
	20	BOOST_HANA_NAMESPACE_BEGIN namespace detail {
	21	//! @cond
	22	template <typename Algorithm>
	23	template <typename X>
	24	constexpr decltype(auto) nested_than_t<Algorithm>::operator()(X&& x) const
	25	{ return hana::partial(hana::flip(Algorithm{}), static_cast<X&&>(x)); }
	26	//! @endcond
	27	} BOOST_HANA_NAMESPACE_END
	28
	29	#endif // !BOOST_HANA_DETAIL_NESTED_THAN_HPP