result.hpp 2.3 KB

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  1. /* A very simple result type
  2. (C) 2017-2021 Niall Douglas <http://www.nedproductions.biz/> (2 commits)
  3. File Created: June 2017
  4. Boost Software License - Version 1.0 - August 17th, 2003
  5. Permission is hereby granted, free of charge, to any person or organization
  6. obtaining a copy of the software and accompanying documentation covered by
  7. this license (the "Software") to use, reproduce, display, distribute,
  8. execute, and transmit the Software, and to prepare derivative works of the
  9. Software, and to permit third-parties to whom the Software is furnished to
  10. do so, all subject to the following:
  11. The copyright notices in the Software and this entire statement, including
  12. the above license grant, this restriction and the following disclaimer,
  13. must be included in all copies of the Software, in whole or in part, and
  14. all derivative works of the Software, unless such copies or derivative
  15. works are solely in the form of machine-executable object code generated by
  16. a source language processor.
  17. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18. IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19. FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  20. SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  21. FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  22. ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23. DEALINGS IN THE SOFTWARE.
  24. */
  25. #ifndef BOOST_OUTCOME_RESULT_HPP
  26. #define BOOST_OUTCOME_RESULT_HPP
  27. #include "boost_result.hpp"
  28. BOOST_OUTCOME_V2_NAMESPACE_EXPORT_BEGIN
  29. /*! In standalone Outcome, this aliases `std_result<>`. In Boost.Outcome, this aliases `boost_result<>`.
  30. */
  31. template <class R, class S = boost::system::error_code, class NoValuePolicy = policy::default_policy<R, S, void>> //
  32. using result = boost_result<R, S, NoValuePolicy>;
  33. /*! In standalone Outcome, this aliases `std_unchecked<>`. In Boost.Outcome, this aliases `boost_checked<>`.
  34. */
  35. template <class R, class S = boost::system::error_code> using unchecked = result<R, S, policy::all_narrow>;
  36. /*! In standalone Outcome, this aliases `std_checked<>`. In Boost.Outcome, this aliases `boost_checked<>`.
  37. */
  38. template <class R, class S = boost::system::error_code> using checked = result<R, S, policy::throw_bad_result_access<S, void>>;
  39. BOOST_OUTCOME_V2_NAMESPACE_END
  40. #endif