On 20 January 2018 at 10:43, Patrick Perry wrote: | As of R Under development (unstable) (2018-01-19 r74138): | | > as.character(list(NA)) | [1] "NA" | | > is.na(as.character(list(NA))) | [1] FALSE
Are you aware that this is the same in R-release, and might be "on purpose" ? R> R.Version()$version.string [1] "R version 3.4.3 (2017-11-30)" R> as.character(list(NA)) [1] "NA" R> is.na(as.character(list(NA))) [1] FALSE R> It is after all you who forces the as.character() and I don't think anybody claims that to be a lossless operation from logical. To wit: R> is.na(list(NA)) [1] TRUE R> Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
