value_or.cpp 405 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/optional.hpp>
  6. namespace hana = boost::hana;
  7. static_assert(hana::just(1).value_or('x') == 1, "");
  8. static_assert(hana::nothing.value_or('x') == 'x', "");
  9. int main() { }