On 8/16/07, Luke Tierney <[EMAIL PROTECTED]> wrote: > On Wed, 15 Aug 2007, Byron Ellis wrote: > > > Hi all, I'm having a problem with some sort of interaction with try() > > and methods, I think. > > > > The setup is as follows, I have an S4 class that holds an environment > > and I would like to evaluate the right hand side of a function inside > > that environment. No problem there. > > > > However, if the formula involves a symbol that doesn't exist, which > > may or may not happen, it fails as it should and reports and error > > "blah blah does not exist." As it should. > > > > When I wrap that same call in a try() statement, the error becomes "no > > function to return from, jumping to top level," bypassing the try > > statement and generally wreaking havoc. Any clues what might be > > causing this? > > Yes. There is no context on the stack that corresponds to the > environment to which a jump is to be made. Why that is the case is > impossible to tell without a simple reproducible example.
I have a sinking feeling that generating a good reduction will also find my bug. :-) I was mostly wondering if there had been a recent change in the try() machinery. In any case, I'll keep hunting for the problem. > > Best, > > luke > > > -- > Luke Tierney > Chair, Statistics and Actuarial Science > Ralph E. Wareham Professor of Mathematical Sciences > University of Iowa Phone: 319-335-3386 > Department of Statistics and Fax: 319-335-3017 > Actuarial Science > 241 Schaeffer Hall email: [EMAIL PROTECTED] > Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu > -- Byron Ellis ([EMAIL PROTECTED]) "Oook" -- The Librarian ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
