On Fri, Dec 11, 2009 at 2:37 PM, Charlie Sharpsteen <ch...@sharpsteen.net> wrote: > On Fri, Dec 11, 2009 at 10:24 AM, Peng Yu <pengyu...@gmail.com> wrote: >> >> How do you figure out all the possibilities? > > Well, the "Value" section of the third party function's help page should > outline the return types it produces. If it doesn't cover all cases, write > a letter to the package maintainer. If you are using third party functions > that are not packaged with help pages, then this sort of uncertainty is part > of using unpublished code.
A document may not document all the corner cases. Even if it is so, you can never be sure unless all the possibilities are examined . ______________________________________________ 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.
