none.hpp 884 B

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  1. /*=============================================================================
  2. Copyright (c) 2001-2011 Joel de Guzman
  3. Copyright (c) 2007 Dan Marsden
  4. Distributed under the Boost Software License, Version 1.0. (See accompanying
  5. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  6. ==============================================================================*/
  7. #if !defined(BOOST_FUSION_NONE_07062005_1128)
  8. #define BOOST_FUSION_NONE_07062005_1128
  9. #include <boost/fusion/algorithm/query/any.hpp>
  10. namespace boost { namespace fusion
  11. {
  12. namespace result_of
  13. {
  14. template <typename Sequence, typename F>
  15. struct none
  16. {
  17. typedef bool type;
  18. };
  19. }
  20. template <typename Sequence, typename F>
  21. inline bool
  22. none(Sequence const& seq, F f)
  23. {
  24. return !fusion::any(seq, f);
  25. }
  26. }}
  27. #endif