[R] Getting ... as an unevaluated list

[Peter Dalgaard]

Gabor Grothendieck <ggrothendieck at gmail.com> writes:

> Try this:
> 
> cl <- as.list(match.call())

or match.call(expand.dots=FALSE)$"..."
 
> 
> On 10/13/05, hadley wickham <h.wickham at gmail.com> wrote:
> > Hi,
> >
> > I'm trying to get ...as a list of unevaluated arguments, ie.
> > substitute(list(...)) gives me an unevaluated list of the arguments,
> > but I want a list of the unevaluated arguments.
> >
> > My attempts so far:
> >
> > (function(...) substitute(...))(a=1, b=a)  # Only returns first
> >
> > (function(...) substitute(list(...)))(a=1, b=a) # Unevaluated list,
> > not list of unevaluated
> >
> > (function(...) expression(...))(a=1, b=a)
> >
> > (function(...) eval(expression(...)))(a=1, b=a)  # Error in eval(expr,
> > envir, enclos) : ... used in an incorrect context
> >
> > (function(...) substitute(expression(...), list(...)))(a=1, b=a) #
> > Error in (function(...) substitute(expression(...), list(...)))(a = 1,
> >  : Object "a" not found
> >
> > What I actually want: list(1, a)
> >
> > Can anyone offer any suggestions?
> >
> > Thanks,
> >
> > Hadley
> >
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> >
> 
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-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
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