std::swap(std::promise) (3) Linux Manual Page

std::swap(std::promise) – std::swap(std::promise)

Synopsis

Defined in header<future>

    template <class R>
    (since C++ 11)

        void swap(promise<R> &lhs, promise<R> &rhs) noexcept;

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)

Example

 This section is incomplete
 Reason: no example

See also

     swaps two promise objects
swap (public member function)