One option that I have not seen mentioned yet, and may be the most similar to the Python approach is to name the "Invisible" function starting with a "." (the period). Then the function will not appear when you do `ls()` but is still accessible. It however is not limited in scope and it is still callable by anyone (and `ls(all=TRUE)` will show it). This does not give the control that packages or local environments do, but it is a quick and easy way to have something that "hidden".
On Fri, Jan 31, 2014 at 11:46 AM, Paul A. Steckler <steck at stecksoft.com> wrote:
I'm fairly new to R, and have checked the R FAQ and done an RSiteSearch for help
on this topic, to no avail.
I want to write some R code that has functions at the top-level that
are not visible when
the code is loaded. So in
fun1 <- function(...) { ... }
fun2 <- function(...) { ... fun1 ...}
I'd like fun2 to be callable, but have fun1 be invisible. That is, the
scope of fun1 is
limited to the file in which it's defined.
In Python, I believe that prepending an underscore to a variable name
limits its scope in this way.
Is there a similar mechanism in R?
-- Paul
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