| 1234567891011121314151617181920212223242526272829303132 |
- /*!
- @file
- Defines `boost::hana::Orderable`.
- @copyright Louis Dionne 2013-2017
- 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_CONCEPT_ORDERABLE_HPP
- #define BOOST_HANA_CONCEPT_ORDERABLE_HPP
- #include <boost/hana/fwd/concept/orderable.hpp>
- #include <boost/hana/config.hpp>
- #include <boost/hana/core/default.hpp>
- #include <boost/hana/core/tag_of.hpp>
- #include <boost/hana/detail/integral_constant.hpp>
- #include <boost/hana/less.hpp>
- BOOST_HANA_NAMESPACE_BEGIN
- template <typename Ord>
- struct Orderable
- : hana::integral_constant<bool,
- !is_default<less_impl<typename tag_of<Ord>::type,
- typename tag_of<Ord>::type>>::value
- >
- { };
- BOOST_HANA_NAMESPACE_END
- #endif // !BOOST_HANA_CONCEPT_ORDERABLE_HPP
|
