On 11/26/2007 1:46 PM, Alberto Monteiro wrote:
> Duncan Murdoch wrote:
>>
>> R doesn't really have global variables. <<- goes looking in parent
>> environments until it finds the target variable, and makes the
>> assignment there. If it never finds one, it makes the assignment in
>> the "global environment", but the name is misleading: it should
>> really be called the "user workspace".
>>
> Got it.
>
> So, in this case:
>
> x <- 1
>
> f <- function() {
> x <- 2
> g <- function() {
> x <<- 3
> }
> g()
> x
> }
>
> f()
>
> It's expected that f will return 3, but x would still be 1?
Yes, the one in the user workspace be unaffected.
Duncan Murdoch
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