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1 // Copyright Louis Dionne 2013-2017
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)
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/experimental/view.hpp>
7 #include <boost/hana/is_empty.hpp>
8 #include <boost/hana/not.hpp>
9 namespace hana
= boost::hana
;
12 template <int> struct undefined
{ };
16 auto single
= hana::experimental::single_view(undefined
<0>{});
17 BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(single
)));