This is the result of the withVisible() function, which is called by source(). This should illustrate what it does:
> withVisible(1+1) $value [1] 2 $visible [1] TRUE > withVisible(invisible(1+1)) $value [1] 2 $visible [1] FALSE -Winston On Tue, Jun 4, 2013 at 3:25 PM, Andreas Leha <andreas.l...@med.uni-goettingen.de> wrote: > Hi all, > > the .Last.value sometimes contains a strange $visible FALSE value. This > poses problems when using R with ESS (and ess-developer-mode) from > within org-mode. > > > >From http://permalink.gmane.org/gmane.emacs.ess.general/7299: > > --8<---------------cut here---------------start------------->8--- > Here is how to reproduce. Put df <- data.frame(a=1:3, b=1:3) in test.R > and then: > > source("test.R") > print(.Last.value) > > you should get: > > $value > a b > 1 1 1 > 2 2 2 > 3 3 3 > > $visible > [1] FALSE > --8<---------------cut here---------------end--------------->8--- > > > Regards, > Andreas > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
