std::experimental::make_exceptional_future

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Defined in header <experimental/future>
template < class T >
future<T> make_exceptional_future( std::exception_ptr ex ) ;
(1) (concurrency TS)
template < class T, class E >
future<T> make_exceptional_future( E ex ) ;
(2) (concurrency TS)
1) Creates a shared state of type T that is immediately ready and stores the exception pointer ex, then return a future associated with that shared state, as if by promise<T> p; p.set_exception (ex) ; return p.get_future ( ) ; . The behavior is undefined if ex
2) Creates a shared state of type T that is immediately ready and stores an exception pointer created from ex, then return a future associated with that shared state, as if by promise<T> p; p.set_exception ( std::make_exception_ptr (ex) ) ; return p.get_future ( ) ;

Return value

A future object associated with the shared state that was created.

See also

(concurrency TS)
produces a future that is ready immediately and holds the given value
(function template)