callr futures — callr • future.callr

A callr future is an asynchronous multiprocess future that will be evaluated in a background R session.

callr(
  expr,
  envir = parent.frame(),
  substitute = TRUE,
  globals = TRUE,
  label = NULL,
  workers = availableCores(),
  ...
)

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: The number of processes to be available for concurrent callr futures.
...: Additional arguments passed to CallrFuture().

An object of class CallrFuture.

callr futures rely on the callr package, which is supported on all operating systems.