1234567891011121314151617181920212223242526272829303132 |
- // 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)
- #include <boost/hana/core/common.hpp>
- #include <type_traits>
- namespace hana = boost::hana;
- template <typename T>
- struct ImplicitConvertibleTo {
- constexpr operator T() const { return {}; }
- };
- struct T { };
- struct invalid;
- static_assert(std::is_same<hana::common_t<T, T>, T>{}, "");
- static_assert(std::is_same<hana::common_t<invalid, invalid>, invalid>{}, "");
- static_assert(std::is_same<hana::common_t<void, void>, void>{}, "");
- static_assert(std::is_same<hana::common_t<ImplicitConvertibleTo<T>, T>, T>{}, "");
- static_assert(std::is_same<hana::common_t<T, ImplicitConvertibleTo<T>>, T>{}, "");
- static_assert(hana::has_common<T, T>{}, "");
- static_assert(!hana::has_common<void, T>{}, "");
- static_assert(!hana::has_common<T, void>{}, "");
- static_assert(!hana::has_common<invalid, T>{}, "");
- static_assert(!hana::has_common<T, invalid>{}, "");
- int main() { }
|