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- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #include <boost/hana/assert.hpp>
- #include <boost/hana/not.hpp>
- #include <boost/hana/optional.hpp>
- namespace hana = boost::hana;
- BOOST_HANA_CONSTANT_CHECK( hana::is_just(hana::just('x')));
- BOOST_HANA_CONSTANT_CHECK( hana::is_just(hana::just(hana::nothing)));
- BOOST_HANA_CONSTANT_CHECK(!hana::is_just(hana::nothing));
- int main() { }
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