Rscript_call {xfun}R Documentation

Call a function in a new R session via Rscript()

Description

Save the argument values of a function in a temporary RDS file, open a new R session via Rscript(), read the argument values, call the function, and read the returned value back to the current R session.

Usage

Rscript_call(
  fun,
  args = list(),
  ...,
  wait = TRUE,
  fail = sprintf("Failed to run '%s' in a new R session.",
    deparse(substitute(fun))[1])
)

Arguments

fun

A function, or a character string that can be parsed and evaluated to a function.

args

A list of argument values.

..., wait

Arguments to be passed to system2().

fail

The desired error message when an error occurred in calling the function.

Value

The returned value of the function in the new R session.

Examples

factorial(10)
# should return the same value
xfun::Rscript_call("factorial", list(10))

# the first argument can be either a character string or a function
xfun::Rscript_call(factorial, list(10))

[Package xfun version 0.20 Index]