Hi,
exists("foo", inherits=TRUE) check whether an object named "foo"
exists, and get("foo", inherits=TRUE) retrieves it. I'm looking for a
similar function to exists() that returns the environment where the
object "foo" exists, iff at all. If not found, NULL is returned.
Does that exist?
EXAMPLE #1:
> sample2 <- base::sample
> env <- where("sample2", inherits=TRUE)
> env
<environment: R_GlobalEnv>
Note the difference to:
> obj <- get("sample2", inherits=TRUE)
> environment(obj)
<environment: namespace:base>
EXAMPLE #2:
> a <- 1
> foo <- function() { b <- 2; list(a=where("a", inherits=TRUE), b=where("b",
> inherits=TRUE)) }
> foo()
$a
<environment: R_GlobalEnv>
$b
<environment: 0x000000000b7d2798>
> foo()
$a
<environment: R_GlobalEnv>
$b
<environment: 0x000000000b7d23e0>
I do understand that I can implement such a function myself, but I
prefer not to.
Thanks,
Henrik
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