# std::shared_future<T>::shared_future

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< cpp‎ | thread‎ | shared future

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

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