std::experimental::future - cppreference.com

From cppreference.com

Defined in header `<experimental/future>`
template< class T > class future;	(1)	(concurrency TS)
template< class T > class future<T&>;	(2)	(concurrency TS)
template<> class future<void>;	(3)	(concurrency TS)

The class template std::experimental::future extends std::future with the following operations:

an unwrapping constructor from future<future<T>>;
a member function is_ready to query whether the associated shared state is ready; and
a member function then to attach a continuation to the future.

However, there is no interoperation between std::experimental::future and std::future.

Members identical to std::future

Note that share() returns a std::experimental::shared_future<T>. The behavior is otherwise identical.

(destructor)	destructs the future object (public member function of `std::future<T>`) [edit]
share	transfers the shared state from `*this` to a `shared_future` and returns it (public member function of `std::future<T>`) [edit]
Getting the result
get	returns the result (public member function of `std::future<T>`) [edit]
State
valid	checks if the future has a shared state (public member function of `std::future<T>`) [edit]
wait	waits for the result to become available (public member function of `std::future<T>`) [edit]
wait_for	waits for the result, returns if it is not available for the specified timeout duration (public member function of `std::future<T>`) [edit]
wait_until	waits for the result, returns if it is not available until specified time point has been reached (public member function of `std::future<T>`) [edit]