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std::shared_future::get(3)     C++ Standard Libary    std::shared_future::get(3)

NAME
     std::shared_future::get - std::shared_future::get

Synopsis
	Main template
	const T& get() const;			(1) (since C++11)
	std::shared_future<T&> specializations
	T& get() const; 			(2) (since C++11)
	std::shared_future<void> specialization
	void get() const;			(3) (since C++11)

	The get member function waits (by calling wait()) until the shared state
     is ready,
	then retrieves the value stored in the shared state (if any).

	If  valid()  is  false before the call to this function, the behavior is
     undefined.

Return value
	1) A const reference to the value stored in the shared state. The behav-
     ior of
	accessing the value through this reference after the  shared  state  has
     been destroyed
	is undefined.
	2) The reference stored as value in the shared state.
	3) (none)

Exceptions
	If  an exception was stored in the shared state referenced by the future
     (e.g. via a
	call to  std::promise::set_exception())  then  that  exception	will  be
     thrown.

Notes
	The  C++ standard recommends the implementations to detect the case when
     valid() is
	false before the call and throw a std::future_error with an error condi-
     tion of
	std::future_errc::no_state.

Example
	 This section is incomplete
	 Reason: no example

See also
	valid checks if the future has a shared state
	      (public member function)

Category:
	  * Todo no example

http://cppreference.com 	   2024.06.10	      std::shared_future::get(3)
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