R: did you know ``comment(.) and comment(.) <- ...''
From r-devel-owner@stat.math.ethz.ch Sat Mar 28 02:30 NZS 1998 Date: Fri, 27 Mar 1998 15:33:02 +0100 From: Martin Maechler <maechler@stat.math.ethz.ch> To: R-devel@stat.math.ethz.ch Subject: R: did you know ``comment(.) and comment(.) <- ...'' Mime-Version: 1.0 (generated by tm-edit 7.95) I'm doing some systematic investigations about which functions are <primitive> in R (and which of these should be changed to .Internal(...))... I just discovered :
x <- 1:10 comment(x)
NULL
comment(x) <- "x is just a vector" x
[1] 1 2 3 4 5 6 7 8 9 10
attributes(x)
$comment [1] "x is just a vector"
comment(x)
[1] "x is just a vector" ---------- Who of you (besides Ross?) did know this feature.
You are making the assumption that I know about this :-). I do have a very vague memory of trying something like this as and experiment. Is it worth keeping? Ross -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._