std::shared_future::shared_future

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C++
 
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std::shared_future
 
shared_future();
 (1) (since C++11)
shared_future( const shared_future& other );
 (2) (since C++11)
shared_future( std::future<T>&& other );
 (3) (since C++11)
shared_future( shared_future&& other );
 (4) (since C++11)

Constructs a new shared_future.

1) Default constructor. Constructs an empty shared future, that doesn't refer to a shared state, that is valid() == false.
2) Constructs a shared future that refers to the same shared state, as other, if there's any.
3-4) Transfers the shared state held by other to *this. After the construction, other->valid() == false, also valid() returns the same value as other.valid() would have returned before the construction.

Parameters

other - another future object to initialize with

Exceptions

1)
noexcept specification:  
noexcept
  
2) (none)
(until C++17)
2)
noexcept specification:  
noexcept
  
 (since C++17)
3-4)
noexcept specification:  
noexcept
  
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