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).
| lhs, rhs | - | promises whose states to swap |
(none).
| swaps two promise objects (public member function) |
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