add_hook: Add a user hook to be executed before launching an R...

In callr: Call R from R

Add a user hook to be executed before launching an R subprocess

Description

This function allows users of callr to specify functions that get invoked whenever an R session is launched. The function can modify the environment variables and command line arguments.

Usage

add_hook(...)

Arguments

...	Named argument specifying a hook function to add, or NULL to delete the named hook.

Details

The prototype of the hook function is function (options), and it is expected to return the modified options.

Value

add_hook is called for its side-effects.

callr documentation built on Nov. 2, 2022, 5:09 p.m.