Hi Benilton: David's solution is short and sweet but below also works. I searched and searched and finally found it in the R-inferno by Patrick Burns. I never looked at the R-inferno carefully before. After glancing at it, I'm printing it out and binding it tomorrow. It's the "got ya" book for R.
tmp0 <- list(a=1, b=NULL, c=3) c(tmp0,list(d=NULL)) On Fri, Feb 17, 2012 at 9:17 PM, David Winsemius <dwinsem...@comcast.net>wrote: > > On Feb 17, 2012, at 8:51 PM, Benilton Carvalho wrote: > > tmp0 <- list(a=1, b=NULL, c=3) >> > > > > length(tmp0) <- 4 > > tmp0 > $a > [1] 1 > > $b > NULL > > $c > [1] 3 > > [[4]] > NULL > > David Winsemius, MD > West Hartford, CT > > > ______________________________**________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help> > PLEASE do read the posting guide http://www.R-project.org/** > posting-guide.html <http://www.R-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ 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.
