then.cpp 526 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/equal.hpp>
  5. #include <boost/hana/then.hpp>
  6. #include <boost/hana/tuple.hpp>
  7. namespace hana = boost::hana;
  8. struct undefined { };
  9. static_assert(
  10. hana::then(hana::make_tuple(undefined{}, undefined{}), hana::make_tuple(1, 2, 3))
  11. ==
  12. hana::make_tuple(
  13. 1, 2, 3,
  14. 1, 2, 3
  15. )
  16. , "");
  17. int main() { }