| 1 | // Copyright Louis Dionne 2013-2022 |
|---|---|
| 2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) |
| 4 | |
| 5 | #include <boost/hana/assert.hpp> |
| 6 | #include <boost/hana/equal.hpp> |
| 7 | #include <boost/hana/type.hpp> |
| 8 | |
| 9 | #include <type_traits> |
| 10 | namespace hana = boost::hana; |
| 11 | |
| 12 | |
| 13 | template <typename ...> struct f; |
| 14 | struct x; |
| 15 | struct y; |
| 16 | |
| 17 | BOOST_HANA_CONSTANT_CHECK(hana::template_<f>() == hana::type_c<f<>>); |
| 18 | BOOST_HANA_CONSTANT_CHECK(hana::template_<f>(hana::type_c<x>) == hana::type_c<f<x>>); |
| 19 | BOOST_HANA_CONSTANT_CHECK(hana::template_<f>(hana::type_c<x>, hana::type_c<y>) == hana::type_c<f<x, y>>); |
| 20 | |
| 21 | static_assert(std::is_same< |
| 22 | decltype(hana::template_<f>)::apply<x, y>::type, |
| 23 | f<x, y> |
| 24 | >::value, ""); |
| 25 | |
| 26 | int main() { } |
| 27 |