20 lines
526 B
C++
20 lines
526 B
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#include <boost/hana/optional.hpp>
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#include <type_traits>
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namespace hana = boost::hana;
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struct Foo { };
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int main() {
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auto just = hana::just(Foo{});
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static_assert(std::is_same<decltype(just), hana::optional<Foo>>{}, "");
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auto nothing = hana::nothing;
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static_assert(std::is_same<decltype(nothing), hana::optional<>>{}, "");
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}
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