On 13/11/2009 7:26 PM, Gabor Grothendieck wrote:
On Fri, Nov 13, 2009 at 7:21 PM, Duncan Murdoch <murd...@stats.uwo.ca> wrote:
On 13/11/2009 6:39 PM, Gabor Grothendieck wrote:
Note that one should use inherits = FALSE argument on get and exists
to avoid returning objects from the parent, the parent of the parent,
etc.
I disagree. Normally you would want to receive those objects. If you
didn't, why didn't you set the parent of the environment to emptyenv() when
you created it?
$ does not look into the parent so if you are trying to get those
semantics you must use inherits = FALSE.
Whoops, yes. That's another complaint about $ on environments.
Duncan Murdoch
x <- 3
e <- new.env()
"x" %in% names(e)
[1] FALSE
get("x", e) # oops
[1] 3
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