[R] How to write a function that accepts unlimited number of input arguments?

Gabor Grothendieck ggrothendieck at gmail.com
Mon Mar 9 22:59:25 CET 2009

Try this:

sum.test <- function(...) sum(c(...))

More commonly one uses the list(...) construct.

On Mon, Mar 9, 2009 at 11:32 AM, Sean Zhang <seanecon at gmail.com> wrote:
> Dear R-helpers:
> I am an R newbie and have a question related to writing functions that
> accept unlimited number of input arguments.
> (I tried to peek into functions such as paste and cbind, but failed, I
> cannot see their codes..)
> Can someone kindly show me through a summation example?
> Say, we have input scalar,  1 2 3 4 5
> then the ideal function, say sum.test, can do
> (1+2+3+4+5)==sum.test(1,2,3,4,5)
> Also sum.test can work as the number of input scalar changes.
> Many thanks in advance!
> -sean
>        [[alternative HTML version deleted]]
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