A callr future is a future whose value will be resolved via callr

CallrFuture(
  expr = NULL,
  envir = parent.frame(),
  substitute = TRUE,
  globals = TRUE,
  packages = NULL,
  label = NULL,
  workers = NULL,
  supervise = FALSE,
  ...
)

Arguments

expr

The R expression to be evaluated.

envir

The environment in which global environment should be located.

substitute

Controls whether expr should be substitute():d or not.

globals

(optional) a logical, a character vector, a named list, or a globals::Globals object. If TRUE, globals are identified by code inspection based on expr and tweak searching from environment envir. If FALSE, no globals are used. If a character vector, then globals are identified by lookup based their names globals searching from environment envir. If a named list or a Globals object, the globals are used as is.

label

(optional) Label of the future.

workers

(optional) The maximum number of workers the callr backend may use at any time.

supervise

(optional) Argument passed to callr::r_bg().

...

Additional arguments passed to future::MultiprocessFuture().

Value

A CallrFuture object