[R] do.call("+", ...)

[Peter Dalgaard]

"Gabor Grothendieck" <ggrothendieck at gmail.com> writes:


> > > Aha, the dreaded "..1" argument.   Where do I look for documentation
> > > on this?
> > >
> > > [It is mentioned twice in The R Language Definition, but I'm no wiser]
> >
> > It's just the first of the ... arguments, essentially list(...)[[1]],
> > except for lazy evaluation details. The second one is ..2, and
> > so forth.
> 
> What are you referring to when writing "except for lazy function details"?

That's not what I wrote...

Try

g <- function(...) list(...)[[1]] 
h <- function(...) ..1

g((print("Hey")), (print("Joe")))
h((print("Hey")), (print("Joe")))

and you should become enlightened. Bonus points for figuring out why I
parenthesized the arguments.

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
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