[Rd] does subset.data.frame need to accept extra arguments?

Hadley Wickham h.wickham at gmail.com
Thu Jul 11 12:59:10 CEST 2013

> It needs to have ... in the formal argument list because the generic
> subset() does.
> It could enforce a run-time warning that some arguments were being skipped
> (by testing length(list(...)) for example), but then NextMethod might fail,
> in a case where an object has a complicated class vector.

That wouldn't be a problem if the check was implemented in
subset.data.frame, would it?


Chief Scientist, RStudio

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