| 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/optional.hpp> |
| 6 | |
| 7 | #include <type_traits> |
| 8 | namespace hana = boost::hana; |
| 9 | |
| 10 | |
| 11 | struct Foo { }; |
| 12 | |
| 13 | int main() { |
| 14 | auto just = hana::just(Foo{}); |
| 15 | static_assert(std::is_same<decltype(just), hana::optional<Foo>>{}, ""); |
| 16 | |
| 17 | auto nothing = hana::nothing; |
| 18 | static_assert(std::is_same<decltype(nothing), hana::optional<>>{}, ""); |
| 19 | } |
| 20 |