std::shared_future<T>:: shared_future

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shared_future ( ) noexcept ;
(1) (since C++11)
(2)
shared_future ( const shared_future & other ) ;
(since C++11)
(until C++17)
shared_future ( const shared_future & other ) noexcept ;
(since C++17)
shared_future ( std:: future < T > && other ) noexcept ;
(3) (since C++11)
shared_future ( shared_future && other ) noexcept ;
(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, if any, as other .
3,4) Transfers the shared state held by other to * this . After the construction, other. valid ( ) == false , and this - > valid ( ) returns the same value as other. valid ( ) would have returned before the construction.

Parameters

other - another future object to initialize with