24_ref_optional_fwd.qbk 649 B

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  1. [/
  2. Boost.Optional
  3. Copyright (c) 2003-2007 Fernando Luis Cacciola Carballal
  4. Copyright (c) 2015 Andrzej Krzemienski
  5. Distributed under the Boost Software License, Version 1.0.
  6. (See accompanying file LICENSE_1_0.txt or copy at
  7. http://www.boost.org/LICENSE_1_0.txt)
  8. ]
  9. [section Header <boost/optional/optional_fwd.hpp>]
  10. [section Synopsis]
  11. ```
  12. namespace boost {
  13. template <class T> class optional ;
  14. template <class T> void swap ( optional<T>& , optional<T>& );
  15. template <class T> struct optional_swap_should_use_default_constructor ;
  16. } // namespace boost
  17. ```
  18. This header only contains declarations.
  19. [endsect]
  20. [endsect]