std::swap(std::promise)
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                    |   Defined in header  
<future>
  | 
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|   template< class R > 
void swap( promise<R> &lhs, promise<R> &rhs );  | 
(since C++11) | |
Specializes the std::swap algorithm for std::promise. Exchanges the shared state of lhs with that of rhs. Effectively calls lhs.swap(rhs).
Contents | 
[edit] Parameters
| lhs, rhs | - | promises whose states to swap | 
[edit] Return value
(none)
[edit] Exceptions
noexcept specification:  
noexcept
  [edit] Example
| This section is incomplete Reason: no example  | 
[edit] See also
|    swaps two promise objects  (public member function)  |