R help - Oct 2013 - list and <<-

Dear All,
> opt = list()
> opt$aa <<- TRUE
Error in opt$aa <<- TRUE : object 'opt' not found

Why?

-- 
Regards,
Taiyun
--
Taiyun Wei <weitaiyun at gmail.com>
Homepage: http://blog.cos.name/taiyun/
Phone: +86-15201142716
Renmin University of China

On Oct 19, 2013, at 9:28 PM, Taiyun Wei wrote:
> Dear All,
> 
>> opt = list()
>> opt$aa <<- TRUE
> Error in opt$aa <<- TRUE : object 'opt' not found
Try _not_ using `<<-`
> Why?
There wasn't an object by htat name in the enclosing environment.

-- 
David Winsemius
Alameda, CA, USA

See fortune(174).

It is best to avoid using '<<-', if you tell us what you are
trying to
accomplish then we may be able to provide a better means to accomplish
it.

On Sat, Oct 19, 2013 at 10:28 PM, Taiyun Wei <weitaiyun at gmail.com>
wrote:
> Dear All,
>
>> opt = list()
>> opt$aa <<- TRUE
> Error in opt$aa <<- TRUE : object 'opt' not found
>
> Why?
>
> --
> Regards,
> Taiyun
> --
> Taiyun Wei <weitaiyun at gmail.com>
> Homepage: http://blog.cos.name/taiyun/
> Phone: +86-15201142716
> Renmin University of China
>
> ______________________________________________
> R-help at 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.


-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com