2 messages · Ajay Shah, David Winsemius
I want to write:
zap <- function(v) {
if (exists(v)) {rm(v)}
}
But of course this doesn't work because the rm() acts on v which is
within zap() and doesn't affect the parent environment:
x <- 1
zap("x")
x
[1] 1 How would I make this zap() function work?
Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.
You might want to look at rm to see how that function handles the problem.
David Winsemius
On Mar 15, 2009, at 3:14 AM, Ajay Shah wrote:
> I want to write:
>
> zap <- function(v) {
> if (exists(v)) {rm(v)}
> }
>
> But of course this doesn't work because the rm() acts on v which is
> within zap() and doesn't affect the parent environment:
>
>> x <- 1
>> zap("x")
>> x
> [1] 1
>
> How would I make this zap() function work?
>
> --
> Ajay Shah
David Winsemius, MD
Heritage Laboratories
West Hartford, CT