Dear, I have noticed this problem while looking at the following question on Stackoverflow :
http://stackoverflow.com/questions/42894213/s4-class-subset-inheritance-with-additional-arguments While going through callNextMethod, I've noticed the following odd behaviour: mc <- call("[",iris,2,"Species") mc[[1]] ## `[` is.primitive(`[`) ## [1] TRUE is.primitive(mc[[1]]) ## [1] FALSE # Expected to be TRUE mc2 <- as.call(list(`[`,iris,2,"Species")) is.primitive(mc2[[1]]) ## [1] TRUE So depending on how I construct the call (using call() or as.call() ), the function `[` is or is not recognized as a primitive by is.primitive() The behaviour is counterintuitive and -unless I miss something obvious here- likely to be a bug imho. I immediately admit that my C chops aren't sufficient to come up with a patch. Cheers Joris -- Joris Meys Statistical consultant Ghent University Faculty of Bioscience Engineering Department of Mathematical Modelling, Statistics and Bio-Informatics tel : +32 (0)9 264 61 79 joris.m...@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
