[R] with for objects

[Hadley Wickham]

Hi Gavin,

Thanks for your suggestion - it wasn't quite what I wanted, but at least 
it got me thinking in the right direction.  I realised I didn't really 
need automatic access to all the slots/methods of a function, just to 
some I used commonly.  So I wrote a function that generates a list 
containing the bits I want from the object, and then passed that to 
with().  Simple and something I probably should have thought of before 
trying to be excessively complicated!

Hadley