R help - Jul 2008 - Messge ``no visible binding''.

I have written a function make.fun(), which I keep in my personal
``miscellaneous'' package.  It searches the current working directory
for files named ``*.R'' and sources them if their modification date
is later than the date stored in ``.Last.make.date''.  (The variable
.Last.make.date then gets updated.)  The function checks whether
.Last.make.date exists before comparing its value with the modification
dates of the *.R files.

When I do R CMD check on my ``miscellaneous'' package, I get a
``NOTE''
(not even a warning!) to the effect:

	``no visible binding for global variable '.Last.make.date'


Is this something that I should worry about at all?  Am I running any
risk by this procedure? Is there a better way to check whether code file
have modified sufficiently recently that they need to be re-sourced?

Thanks for any tips.  (But no asparagus, please! :-) )

	cheers,

		Rolf Turner

######################################################################
Attention:\ This e-mail message is privileged and confid...{{dropped:9}}

Simply add a definition for this variable to the source for your package,
e.g.;

.Last.make.date <- NULL

And the warning should go away.

-g


On 6/30/08 11:44PM , "Rolf Turner" <r.turner at auckland.ac.nz>
wrote:
> 
> 
> I have written a function make.fun(), which I keep in my personal
> ``miscellaneous'' package.  It searches the current working
directory
> for files named ``*.R'' and sources them if their modification date
> is later than the date stored in ``.Last.make.date''.  (The
variable
> .Last.make.date then gets updated.)  The function checks whether
> .Last.make.date exists before comparing its value with the modification
> dates of the *.R files.
> 
> When I do R CMD check on my ``miscellaneous'' package, I get a
``NOTE''
> (not even a warning!) to the effect:
> 
> ``no visible binding for global variable '.Last.make.date'
> 
> 
> Is this something that I should worry about at all?  Am I running any
> risk by this procedure? Is there a better way to check whether code file
> have modified sufficiently recently that they need to be re-sourced?
> 
> Thanks for any tips.  (But no asparagus, please! :-) )
> 
> cheers,
> 
> Rolf Turner
> 
> ######################################################################
> Attention:\ This e-mail message is privileged and confid...{{dropped:9}}
> 
> ______________________________________________
> 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 R. Warnes, Ph.D
Program Director
Center for Computational Arts, Sciences, and Engineering
University of Rochester

Tel: 585-273-2794
Fax: 585-276-2097
Email: gregory.warnes at rochester.edu