Consider the following expression, in which we pass 'i=', with no value given for the 'i' argument, to lapply. lapply("x", function(i, j) c(i=missing(i),j=missing(j), i=) >From R-2.14.0 (2011-10-31) through R-3.4.4 (2018-03-15) this evaluated to c(i=TRUE, j=FALSE). From R-3.5.0 (2018-04-23) through R-4.0.0 (2020-04-24) this evaluated to c(i=FALSE, j=TRUE).
Was this change intentional? Bill Dunlap TIBCO Software wdunlap tibco.com [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel