According to
:https://stat.ethz.ch/R-manual/R-devel/library/base/html/environment.html
"If |fun| is a function or a formula then |environment(fun)| returns the
environment associated with that function or formula. If |fun| is |NULL|
then the current evaluation environment is returned."
> environment()
<environment: R_GlobalEnv>
> environment(environment)
<environment: namespace:base>
This makes sense, however I have two questions on things that don't seem
to make sense:
1.
> .Internal(environment(NULL))
<environment: base>
Since we are calling from R_GlobalEnv, how can the calling environment
be base?
2.
In eval.R in library/base/R:
.GlobalEnv <- environment()
parent.frame <- function(n = 1) .Internal(parent.frame(n))
etc.
Since the functions being defined are in base, how can the calling
environment be R_GlobalEnv. Or does this just set .GlobalEnv temporarily
to base?
Thanks
Mick Jordan
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