to.cpp 827 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/core/to.hpp>
  6. #include <boost/hana/equal.hpp>
  7. #include <boost/hana/integral_constant.hpp>
  8. #include <boost/hana/optional.hpp>
  9. #include <boost/hana/range.hpp>
  10. #include <boost/hana/tuple.hpp>
  11. namespace hana = boost::hana;
  12. int main() {
  13. static_assert(hana::to<hana::tuple_tag>(hana::just(1)) == hana::make_tuple(1), "");
  14. BOOST_HANA_CONSTANT_CHECK(hana::to<hana::tuple_tag>(hana::nothing) == hana::make_tuple());
  15. BOOST_HANA_CONSTANT_CHECK(
  16. hana::to<hana::tuple_tag>(hana::make_range(hana::int_c<3>, hana::int_c<6>))
  17. ==
  18. hana::tuple_c<int, 3, 4, 5>
  19. );
  20. }