[Rd] how to start local scope?

[Roger D. Peng]

Try

f <- function() {
	local({
		b <- 1
	})
	b + 2
}


Tamas K Papp wrote:
> How can I start a local scope inside an R function?  Eg in
> 
>> b
> Error: object "b" not found
>> f <- function() {
> +   {
> +     b <- 1
> +   }
> +   b+2
> + }
>> f()
> [1] 3
> 
> I would like f() to report an error, not finding b.  I am thinking
> about something like let in Scheme/Lisp.
> 
> Thanks,
> 
> Tamas
> 
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-- 
Roger D. Peng  |  http://www.biostat.jhsph.edu/~rpeng/