std::promise<R>::swap
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std::promise 
 
 Member functions
promise::swap
 Getting the result
 Setting the result
 Non-member Functions
 Helper Classes
void swap( promise& other ) noexcept;
 
 (since C++11) 
Exchanges the shared states of two promise objects.
Contents
[edit] Parameters
 other
 -
 the promise to swap with
[edit] Return value
(none)
[edit] Example
 This section is incomplete
Reason: no example
Reason: no example