Identify Globals and Packages of a Map-Reduce Function Call

Usage

get_globals_and_packages_xapply(
  fun,
  fun_name = as.character(substitute(fun)),
  args = NULL,
  args_name = "...",
  globals = TRUE,
  packages = NULL,
  envir = parent.frame()
)

Arguments

fun: A function that takes one or more arguments.
fun_name: The name of the argument that fun should be passed as.
args: (optional) A list of arguments passed to fun, either via a named argument (args_name), or via ....
args_name: If "...", then the arguments in args are passed to fun() as individual arguments. If a string, then args as passed to fun() via the argument of this name.
globals: (optional) a logical, a character vector, a named list, or a 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.
packages: (optional) a character vector specifying packages to be attached in the R environment evaluating the future.
envir: The environment from where globals should be searched.

Value

A names list with elements:

globals - a FutureGlobals object
packages - a character vector of package names