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- [/
- Boost.Optional
- Copyright (c) 2003-2007 Fernando Luis Cacciola Carballal
- Copyright (c) 2015 Andrzej Krzemienski
- Distributed under the Boost Software License, Version 1.0.
- (See accompanying file LICENSE_1_0.txt or copy at
- http://www.boost.org/LICENSE_1_0.txt)
- ]
- [section Header <boost/optional/optional_fwd.hpp>]
- [section Synopsis]
- ```
- namespace boost {
- template <class T> class optional ;
- template <class T> void swap ( optional<T>& , optional<T>& );
- template <class T> struct optional_swap_should_use_default_constructor ;
-
- } // namespace boost
- ```
- This header only contains declarations.
- [endsect]
- [endsect]
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