On Jan 9, 2013, at 9:00 PM, ivo welch <ivo.we...@gmail.com> wrote:
> mea culpa. > > f <- function(...) { > ## parse out the arguments and then do something with them > } > > ## all of these should result in the same actions > f(2,3) ## interprets a to be first and b to be second > f(a=2,b=3) > f(b=3,a=2) These will all be the same automatically for functions with the signature f(a, b, ...) [grammatical not variadic ellipsis there] -- basic call matching, nothing fancy. > f(data.frame(a=2,b=3)) > f(data.frame(b=3,a=1)) > Perhaps test if your first arg is a df and, if so, loop over it row-wise building the function calls with do.call() -- something like: # Untested f <- function(a, b){ if(is.data.frame(a)) return(lapply(seq_len(NROW(a)), function(n) do.call(f, a[n,])) ## regular function code here } You should probably also fiddle with Recall() to make the recursive structure a little more robust. Though it seems that generic functions make more sense here. Michael Weylandt > > > On Tue, Jan 8, 2013 at 8:00 AM, David Winsemius <dwinsem...@comcast.net> > wrote: >> >> On Jan 7, 2013, at 6:58 PM, ivo welch wrote: >> >>> hi david---can you give just a little more of an example? the >>> function should work with call by order, call by name, and data frame >>> whose columns are the names. /iaw >> >> It is I who should be expecting you to provide an example. >> >> -- David. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.