Prof Brian Ripley
2003-Jun-20 13:57 UTC
[Rd] paste(character(0), character(0)) == "". Why?
This seems to be deliberate, since paste.c says
if(maxlen == 0)
return mkString("");
but it is not documented and it is not what S (even S+3.4) does.
On the other hand, S gives
> paste(character(0), character(0), collapse="+")
[1] " "
which looks incorrect to me (and R gives "" which I reckon to be
right).
Anyone know the rhyme or reason here?
--
Brian D. Ripley, ripley@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595