ceph/src/boost/libs/hana/example/contains.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/contains.hpp>
   7 #include <boost/hana/integral_constant.hpp>
   8 #include <boost/hana/set.hpp>
   9 #include <boost/hana/tuple.hpp>
  10 #include <boost/hana/type.hpp>
  11 namespace hana = boost::hana;
  12
  13
  14 BOOST_HANA_CONSTANT_CHECK(hana::contains(hana::make_tuple(2, hana::int_c<2>, hana::int_c<3>, 'x'), hana::int_c<3>));
  15
  16 BOOST_HANA_CONSTANT_CHECK(hana::contains(hana::make_set(hana::int_c<3>, hana::type_c<void>), hana::type_c<void>));
  17
  18 // contains can be applied in infix notation
  19 BOOST_HANA_CONSTANT_CHECK(
  20     hana::make_tuple(2, hana::int_c<2>, hana::int_c<3>, 'x') ^hana::contains^ hana::int_c<2>
  21 );
  22
  23 int main() { }