ceph/src/boost/libs/hana/example/optional/orderable.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/greater.hpp>
   7 #include <boost/hana/less.hpp>
   8 #include <boost/hana/optional.hpp>
   9 namespace hana = boost::hana;
  10
  11
  12 BOOST_HANA_CONSTANT_CHECK(hana::nothing < hana::just(3));
  13 BOOST_HANA_CONSTANT_CHECK(hana::just(0) > hana::nothing);
  14 static_assert(hana::just(1) < hana::just(3), "");
  15 static_assert(hana::just(3) > hana::just(2), "");
  16
  17 int main() { }