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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/experimental/types.hpp>
- #include <boost/hana/is_empty.hpp>
- #include <boost/hana/not.hpp>
- namespace hana = boost::hana;
- template <int> struct x;
- int main() {
- BOOST_HANA_CONSTANT_CHECK(hana::is_empty(
- hana::experimental::types<>{}
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(
- hana::experimental::types<x<0>>{}
- )));
- BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(
- hana::experimental::types<x<0>, x<1>>{}
- )));
- BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(
- hana::experimental::types<x<0>, x<1>, x<2>>{}
- )));
- BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(
- hana::experimental::types<x<0>, x<1>, x<2>, x<3>>{}
- )));
- }
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