Defined in header <future> | ||
---|---|---|
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)
.
Parameters
lhs, rhs | - | promises whose states to swap |
Return value
(none).
Exceptions
noexcept
specification: noexcept
Example
See also
swaps two promise objects (public member function) |
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