erase_key.cpp 733 B

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  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. #include <boost/hana/assert.hpp>
  5. #include <boost/hana/equal.hpp>
  6. #include <boost/hana/erase_key.hpp>
  7. #include <boost/hana/integral_constant.hpp>
  8. #include <boost/hana/set.hpp>
  9. #include <boost/hana/type.hpp>
  10. namespace hana = boost::hana;
  11. int main() {
  12. constexpr auto xs = hana::make_set(hana::int_c<0>, hana::type_c<int>, hana::type_c<void>);
  13. BOOST_HANA_CONSTANT_CHECK(hana::erase_key(xs, hana::type_c<int>) == hana::make_set(hana::int_c<0>, hana::type_c<void>));
  14. BOOST_HANA_CONSTANT_CHECK(hana::erase_key(xs, hana::type_c<char>) == xs);
  15. }