On 02/10/2010 10:40 AM, Hadley Wickham wrote:
On Sat, Oct 2, 2010 at 8:18 AM, Duncan Murdoch <murdoch.dun...@gmail.com> wrote:
On 02/10/2010 7:57 AM, Hadley Wickham wrote:
Hi all,
I'm trying to understand the default value of the enclos argument of eval:
enclos = if(is.list(envir) || is.pairlist(envir)) parent.frame()
else baseenv()
Why isn't it just
enclos = parent.frame()
given that enclos is only meaningful (given my reading of the
documentation) when envir is not an environment already.
Hadley
I think that handles the case of envir=NULL.
So that makes eval(expr, NULL) equivalent to eval(expr, baseenv()), right?
I think so.
Duncan
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