ceph/src/boost/libs/hana/example/count.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/count.hpp>
   7 #include <boost/hana/equal.hpp>
   8 #include <boost/hana/integral_constant.hpp>
   9 #include <boost/hana/tuple.hpp>
  10 #include <boost/hana/type.hpp>
  11 namespace hana = boost::hana;
  12
  13
  14 int main() {
  15     constexpr auto ints = hana::tuple_c<int, 1, 2, 3, 2, 2, 4, 2>;
  16     BOOST_HANA_CONSTANT_CHECK(hana::count(ints, hana::int_c<2>) == hana::size_c<4>);
  17     static_assert(hana::count(ints, 2) == 4, "");
  18
  19
  20     constexpr auto types = hana::tuple_t<int, char, long, short, char, double>;
  21     BOOST_HANA_CONSTANT_CHECK(hana::count(types, hana::type_c<char>) == hana::size_c<2>);
  22 }