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