Because, as that help page makes clear, the 'parent environment' is
easily confused with the 'parent frame', we tend not to use the
former.
So the main answer to
when/how is the the parent environment distinct from the enclosing
environment?
is 'when the writer meant the parent frame'.
On Mon, 7 Feb 2011, Joshua Wiley wrote:
On Mon, Feb 7, 2011 at 9:40 AM, Bert Gunter <gunter.ber...@gene.com> wrote:
On Mon, Feb 7, 2011 at 9:21 AM, Joshua Wiley <jwiley.ps...@gmail.com> wrote:
Hi,
When a function cannot find a variable inside its own environment, it
will look to its parent environment.
This is false. It will "look to" its **enclosing environment" /
"enclosure" . See
?environment
Thank you for the correction, Bert. I had always interpreted:
"If one follows the 'parent.env()' chain of enclosures back far
enough from any environment, eventually one reaches the empty
environment."
to mean the parent environment was basically synonymous with the
enclosure. I re-read ?environment, but I think I am still missing
something, so if I may ask a follow up question, would you explain or
suggest additional places to look for when/how is the the parent
environment distinct from the enclosing environment?
Thanks,
Josh
(Note: This is fundamental to R scoping)
-- Bert
--
Bert Gunter
Genentech Nonclinical Biostatistics
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
