On Fri, Feb 17, 2012 at 7:51 PM, Benilton Carvalho <beniltoncarva...@gmail.com> wrote: > Hi everyone, > > For reasons beyond the scope of this message, I'd like to append a > NULL element to the end of a list. > > tmp0 <- list(a=1, b=NULL, c=3) > append(tmp0, c(d=4)) ## works as expected > append(tmp0, c(d=NULL)) ## list with a/b/c only > > Given that I could use > > tmp0$a <- NULL > > to remove 'a', I seem to understand why appending NULL returns me the > original list... But how should I proceed to actually have d=NULL > (just like I have 'b' in tmp0 above)?
tmp0["d"] <- list(NULL) ? Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ 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.
