std::function<R(Args...)>::swap

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void swap( function& other ) noexcept;
(since C++11)

Exchanges the stored callable objects of *this and other.

Parameters

other - function wrapper to exchange the stored callable object with

Return value

(none)

See also

(C++23)
swaps the targets of two std::move_only_function objects
(public member function of std::move_only_function)