cppdraft_translate/cppdraft/futures/task/nonmembers.md

[futures.task.nonmembers]

32 Concurrency support library [thread]

32.10 Futures [futures]

32.10.10 Class template packaged_task [futures.task]

32.10.10.3 Globals [futures.task.nonmembers]

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template<class R, class... ArgTypes> void swap(packaged_task<R(ArgTypes...)>& x, packaged_task<R(ArgTypes...)>& y) noexcept;

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Effects: As if by x.swap(y).