On Thu, 19 May 2005, Duncan Murdoch wrote:
I'd like a function to get an unevaluated copy of its argument list, including ... . That is, I'd like
f <- function(...) { args <- <what goes here??> args }
when called as
f(a = 1+1, b = foo)
to return something like list(a = quote(1+1), b = quote(foo)). If I use args <- list(...) then it tries to evaluate the arguments and dies (because foo doesn't exist). If I use args <- substitute(...) then it gives just 1+1, it doesn't keep the names or give the whole list.
f <- function(...) as.list(match.call())[-1] f(a = 1+1, b = foo)
$a 1 + 1
$b foo
(which is what list(a = quote(1+1), b = quote(foo)) prints as).
-- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
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