ceph/src/boost/libs/hana/test/experimental/view/empty/length.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/equal.hpp>
   7 #include <boost/hana/experimental/view.hpp>
   8 #include <boost/hana/integral_constant.hpp>
   9 #include <boost/hana/length.hpp>
  10 namespace hana = boost::hana;
  11
  12
  13 int main() {
  14     {
  15         auto empty = hana::experimental::empty_view();
  16         BOOST_HANA_CONSTANT_CHECK(hana::equal(
  17             hana::length(empty),
  18             hana::size_c<0>
  19         ));
  20     }
  21 }