> Hello All,
>
> By default, a reference of a variable in a function cause R to look
> for the variable in the parent environment if it is not available in
> the current environment (without generating any errors or warnings).
> I'm wondering if there is a way to revert this behaviors, such that it
> will not look for the parent environment and will generate an error if
> the variable is not available in the current environment. Is this
> tuning has to be done at the C level?
Try this:
b <- 1
f <- function(a) {
b
}
environment(f) <- baseenv()
f()
Hadley
--
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/
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