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. "comment" is an *INVISIBLE* (for printing) attribute you can give to anything, including functions and data.frames. Any volunteer for writing a Rdoc file "comment.Rd" (for `?comment' to work)? Martin -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._