[R] Messge ``no visible binding''.

[Rolf Turner]

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

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