Stavros Macrakis wrote: > There is no equivalent to set-car!/rplaca (not even pairlists and > expressions). For example, r<-pairlist(1,2); r[[1]]<-r does not create a > circular list. And in general there doesn't seem to be substructure sharing > at the semantic level (though there may be in the implementation). > >
again, you can achieve the effect with environments: e = new.env(parent=emptyenv()) e$e = e e e$e$e$e vQ ______________________________________________ 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.
