ceph/src/boost/libs/hana/test/experimental/view/single/is_empty.cpp

   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)
   4
   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;
  10
  11
  12 template <int> struct undefined { };
  13
  14 int main() {
  15     {
  16         auto single = hana::experimental::single_view(undefined<0>{});
  17         BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(single)));
  18     }
  19 }