On 12-03-07 9:52 AM, Richard Cotton wrote:
Even for an extremely simple instance of a reference classx<- setRefClass("x") y<- x$new() calling the internal inspect function .Internal(inspect(y)) produces enough output that it takes several minutes to print to the console. (Actually I gave up and terminated the command after ~10 mins. It isn't clear whether the output would eventually complete.) Are reference classes really so complicated inside, or is this a bug? ______________________________________________
If you look at the output, you'll see it's looping. When I hit Esc, I saw that .self is an S4SXP with an attribute .xData which is an environment containing the same .self, ad infinitum.
So I'd say it's a bug in inspect(). It can handle the case of an environment holding itself, but I think it was written before S4SXPs contained themselves, and it looks like it's not checking for that.
I'll take a look if someone else doesn't get there first... Duncan Murdoch ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
