On Thu, Aug 30, 2018 at 2:09 PM Dénes Tóth <toth.de...@kogentum.hu> wrote:
> Note that `||` and `&&` have never been symmetric: > > TRUE || stop() # returns TRUE > stop() || TRUE # returns an error > > Fair point. So the suggestion would be to check whether x is of length 1 and whether y is of length 1 only when needed. I.e. c(TRUE,FALSE) || TRUE would give an error and TRUE || c(TRUE, FALSE) would pass. Thought about it a bit more, and I can't come up with a use case where the first line must pass. So if the short circuiting remains and the extra check only gives a small performance penalty, adding the error could indeed make some bugs more obvious. Cheers Joris -- Joris Meys Statistical consultant Department of Data Analysis and Mathematical Modelling Ghent University Coupure Links 653, B-9000 Gent (Belgium) <https://maps.google.com/?q=Coupure+links+653,%C2%A0B-9000+Gent,%C2%A0Belgium&entry=gmail&source=g> ----------- Biowiskundedagen 2017-2018 http://www.biowiskundedagen.ugent.be/ ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
