Paul Gilbert <[EMAIL PROTECTED]> writes: > >I.e., when x is missing in g, and g calls f(3,x), f will use its > >default value for x. > > > > > Yes, that is the behaviour I am looking for. That is, f should do what > it normal would do if it were called with x missing.
But if x has a default in g then that default should presumably be used? And what if x is given a value in the evaluation frame of g before it is used by f (which can happen, you know, even after the evaluation of f has begun)? Now imagine a longer chain of calls. I think what you're asking for is essentially dynamic scoping for missing arguments: you'd have to backtrack along the call chain to find the first instance where x is either given a value or has a default. This sounds messy. -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
