Le vendredi 18 novembre 2011 à 16:09 +0100, Jaensch, Steffen [TIBBE] a
écrit :
> Hi all,
>
> Can somebody explain why length("") returns 1 and not 0?
Probably because it contains one element, "".> How do I test if a given string is the empty string? a <- "" a == "" [1] TRUE Seems to be enough to me. ;-) Cheers ______________________________________________ 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.
