mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-26 23:05:00 +03:00
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
/*!
|
|
@file
|
|
Defines `boost::hana::Comonad`.
|
|
|
|
@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_COMONAD_HPP
|
|
#define BOOST_HANA_CONCEPT_COMONAD_HPP
|
|
|
|
#include <boost/hana/fwd/concept/comonad.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/duplicate.hpp>
|
|
#include <boost/hana/extend.hpp>
|
|
#include <boost/hana/extract.hpp>
|
|
|
|
|
|
BOOST_HANA_NAMESPACE_BEGIN
|
|
template <typename W>
|
|
struct Comonad
|
|
: hana::integral_constant<bool,
|
|
!is_default<extract_impl<typename tag_of<W>::type>>::value &&
|
|
(!is_default<duplicate_impl<typename tag_of<W>::type>>::value ||
|
|
!is_default<extend_impl<typename tag_of<W>::type>>::value)
|
|
>
|
|
{ };
|
|
BOOST_HANA_NAMESPACE_END
|
|
|
|
#endif // !BOOST_HANA_CONCEPT_COMONAD_HPP
|