ceph/src/boost/libs/hana/test/issues/github_460.cpp

   1 // Copyright Jason Rice 2020
   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/define_struct.hpp>
   6 #include <boost/hana/equal.hpp>
   7 #include <boost/hana/members.hpp>
   8 #include <boost/hana/not_equal.hpp>
   9 namespace hana = boost::hana;
  10
  11
  12 struct SomeStruct {
  13     BOOST_HANA_DEFINE_STRUCT(SomeStruct, (int, x));
  14
  15     constexpr bool operator==(SomeStruct const& other) {
  16         return hana::equal(hana::members(*this), hana::members(other));
  17     }
  18
  19     constexpr bool operator!=(SomeStruct const& other) {
  20         return hana::not_equal(hana::members(*this), hana::members(other));
  21     }
  22 };
  23
  24 int main() {
  25     static_assert(SomeStruct{5} == SomeStruct{5}, "");
  26     static_assert(hana::equal(SomeStruct{5}, SomeStruct{5}), "");
  27 }