Gets the value of a future. If the future is unresolved, then the evaluation blocks until the future is resolved.
# S3 method for Future
value(future, stdout = TRUE, signal = TRUE, ...)
A Future.
If TRUE, any captured standard output is outputted, otherwise not.
A logical specifying whether (conditions) should signaled or be returned as values.
Not used.
An R object of any data type.
This method needs to be implemented by the class that implement the Future API.