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Difference between revisions of "cpp/thread/promise/swap2"

From cppreference.com
< cpp‎ | thread‎ | promise
m (Text replace - "{{noexcept" to "{{unreviewed noexcept")
m (merge noexcept)
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{{ddcl | header=future | since=c++11 |
 
{{ddcl | header=future | since=c++11 |
 
template< class R >
 
template< class R >
void swap( promise<R> &lhs, promise<R> &rhs );
+
void swap( promise<R> &lhs, promise<R> &rhs ) noexcept;
 
}}
 
}}
  
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===Return value===
 
===Return value===
 
(none)
 
(none)
 
===Exceptions===
 
{{unreviewed noexcept}}
 
  
 
===Example===
 
===Example===

Revision as of 13:50, 11 May 2017

 
 
Concurrency support library
Threads
(C++11)
(C++20)
this_thread namespace
(C++11)
(C++11)
(C++11)
Cooperative cancellation
Mutual exclusion
(C++11)
Generic lock management
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Condition variables
(C++11)
Semaphores
Latches and Barriers
(C++20)
(C++20)
Futures
(C++11)
(C++11)
(C++11)
(C++11)
Safe Reclamation
(C++26)
Hazard Pointers
Atomic types
(C++11)
(C++20)
Initialization of atomic types
(C++11)(deprecated in C++20)
(C++11)(deprecated in C++20)
Memory ordering
Free functions for atomic operations
Free functions for atomic flags
 
 
Defined in header <future>
template< class R >
void swap( promise<R> &lhs, promise<R> &rhs ) noexcept;
(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

Parameters

lhs, rhs - promises whose states to swap

Return value

(none)

Example

See also

swaps two promise objects
(public member function) [edit]