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std::packaged_task::valid(3)  C++ Standard Libary std::packaged_task::valid(3)

NAME
       std::packaged_task::valid - std::packaged_task::valid

Synopsis
	  bool valid() const noexcept;	(since C++11)

	  Checks whether *this has a shared state.

Parameters
	  (none)

Return value
	  true if *this	has a shared state, false otherwise.

http://cppreference.com		  2022.07.31	  std::packaged_task::valid(3)

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