Return the closure environment of a function
Closure environments define the scope of functions (see env()).
When a function call is evaluated, R creates an evaluation frame
(see ctxt_stack()) that inherits from the closure environment.
This makes all objects defined in the closure environment and all
its parents available to code executed within the function.
fn_env(fn) fn_env(x) <- value
fn, x |
A function. |
value |
A new closure environment for the function. |
fn_env() returns the closure environment of fn. There is also
an assignment method to set a new closure environment.
env <- child_env("base")
fn <- with_env(env, function() NULL)
identical(fn_env(fn), env)
other_env <- child_env("base")
fn_env(fn) <- other_env
identical(fn_env(fn), other_env)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.