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f51cf556 | 1 | // Copyright Louis Dionne 2013-2022 |
7c673cae FG |
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 | } |