Thanks, Iris. That is what I suspected, but it wasn't clear to me from the docs.
Best, Bert On Sun, Jan 5, 2025 at 10:16 AM Iris Simmons <[email protected]> wrote: > > I would use two because it does not force the evaluation of the other > arguments in the ... list. > > > > On Sun, Jan 5, 2025, 13:00 Bert Gunter <[email protected]> wrote: >> >> Consider: >> >> f1 <- function(...){ >> one <- list(...)[['a']] >> two <- ...elt(match('a', ...names())) >> c(one, two) >> } >> ## Here "..." is an argument list with "a" somewhere in it, but in an >> unknown position. >> >> > f1(b=5, a = 2, c=7) >> [1] 2 2 >> >> Which is better for extracting a specific named argument, one<- or >> two<- ? Or a third alternative that is better than both? >> Comments and critiques welcome. >> >> Cheers, >> Bert >> >> ______________________________________________ >> [email protected] mailing list -- To UNSUBSCRIBE and more, see >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide https://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
