On Apr 15, 2008, at 9:53 PM, Ng Stanley wrote: > Hi, > >> t <- list("cat"=1) >> exists("t") > [1] TRUE >> exists("t[["cat"]]") > Error: unexpected symbol in "exists("t[["cat" >> exists("t[[\"cat\"]]") > [1] FALSE
Perhaps what you want is: "cat" %in% names(t) > Thanks > Stanley Haris Skiadas Department of Mathematics and Computer Science Hanover College ______________________________________________ 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.