ceph/src/boost/libs/hana/example/map/symmetric_difference.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/map.hpp>
   7 #include <boost/hana/symmetric_difference.hpp>
   8
   9 namespace hana = boost::hana;
  10
  11
  12 constexpr auto m1 = hana::make_map(
  13     hana::make_pair(hana::type_c<int>, 1),
  14     hana::make_pair(hana::type_c<bool>, hana::true_c)
  15 );
  16
  17 constexpr auto m2 = hana::make_map(
  18     hana::make_pair(hana::type_c<float>, 1.0),
  19     hana::make_pair(hana::type_c<long long>, 2LL),
  20     hana::make_pair(hana::type_c<int>, 3)
  21 );
  22
  23 constexpr auto result_m = hana::make_map(
  24     hana::make_pair(hana::type_c<bool>, hana::true_c),
  25     hana::make_pair(hana::type_c<float>, 1.0),
  26     hana::make_pair(hana::type_c<long long>, 2LL)
  27 );
  28
  29 int main() {
  30     BOOST_HANA_RUNTIME_CHECK(
  31             hana::symmetric_difference(m1, m2) == result_m
  32     );
  33 }