blob: 1e9303d2044a7c0899ab7c461968839125637a82 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
/*!
@file
Defines `boost::hana::Orderable`.
@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_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
|
