Forwarded to R-bugs to log this. It may or may not be a bug, but it is a desirable enhancement, if a tricky one.
Note that this is not simple: in R-devel it may be show() not print() that was called (and needs to be dispatched on, although print.default will do that) and the print functionality can be called directly from C code, e.g. by PrintValue. Also, auto-printing as in the example does not call print.default at all (put a trace on it to see). but the C function PrintValueEnv()! -- Brian D. Ripley, [EMAIL PROTECTED] 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 ---------- Forwarded message ---------- Date: Thu, 30 Jan 2003 16:15:14 +1100 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [Rd] print.default and attributes When something gets printed by the "print.default" function, any extra attributes are printed without regard to their class attribute (if any). For example: > x <- 1:3 > attr( x, 'other') <- factor( c( 'cat', 'dog')) > attr( x, 'other') [1] cat dog Levels: cat dog > x [1] 1 2 3 attr(,"other") [1] 1 2 which is perhaps surprising. Would it be preferable for "print.default" to call the generic "print" for each attribute, so that any class-specific print methods are respected? ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-devel
