On Wed, Jan 28, 2009 at 6:26 AM, Wacek Kusnierczyk <waclaw.marcin.kusnierc...@idi.ntnu.no> wrote: > Gabor Grothendieck wrote: >> The argument to eval.parent is evaluated before eval.parent >> ever sees it. > > really? eval.parent is just a regular r function, a wrapper for eval > with envir=parent.frame(). the arguments to eval.parent are passed to > eval *unevaluated* (as promises), and are only evaluated when eval needs > them. here's a modified eval.parent:
Yes, you're right about the mechanism although quoting the help page its nevertheless true that it: "evaluates its first argument in the current scope before passing it to the evaluator" ______________________________________________ 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.
