[R] Looking for a book/tutorial with the following context:

[Hadley Wickham]

> Do you also know more references about variables? Unfortunately this was a
> little bit short so I do not feel 100% sure I completely got it.

Try here:
http://github.com/hadley/devtools/wiki/Scoping

It's a work in progress.

Hadley

-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/