| 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/not.hpp> |
| 7 | #include <boost/hana/optional.hpp> |
| 8 | namespace hana = boost::hana; |
| 9 | |
| 10 | |
| 11 | struct undefined { }; |
| 12 | |
| 13 | int main() { |
| 14 | BOOST_HANA_CONSTANT_CHECK(hana::is_just(hana::just(undefined{}))); |
| 15 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_just(hana::nothing))); |
| 16 | } |
| 17 |