std::swap(std::promise)
Min standard notice:
Header: <future>
Specializes the std::swap algorithm for std::promise. Exchanges the shared state of lhs with that of rhs. Effectively calls lhs.swap(rhs).
# Declarations
template< class R >
void swap( promise<R>& lhs, promise<R>& rhs ) noexcept;
(since C++11)
# Parameters
lhs, rhs: promises whose states to swap
# Return value
(none)
# Example
This section is incompleteReason: no example