Future-class: A future represents a value that will be available at some point in the future
Description
A future is an abstraction for a value that may
available at some point in the future. A future can either be
unresolved or resolved, a state which can be checked
with resolved(). As long as it is unresolved, the
value is not available. As soon as it is resolved, the value
is available via value().Usage
Future(expr = NULL, envir = parent.frame(), substitute = FALSE,
earlySignal = FALSE, ...)
Arguments
envir
The environment in which the evaluation
is done (or inherits from if local is TRUE). substitute
If TRUE, argument expr is
substitute():ed, otherwise not. earlySignal
Specified whether conditions should be signaled as soon as possible or not.
...
Additional named elements of the future.
Value
- An object of class
Future.
See Also
One function that creates a Future is future().
It returns a Future that evaluates an R expression in the future.
An alternative approach is to use the %<=%< a=""> infix
assignment operator, which creates a future from the
right-hand-side (RHS) R expression and assigns its future value
to a variable as a promise.