defining a print method
On 1/4/06, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
In the following session we define an xx class and a print method for it. If I invoke it with print then it prints as expected but if we just type xx at the R prompt then we get nothing back. How do we define the print method so that it works in the latter case too?
xx <- structure("abc", class = "xx")
print.xx <- function(x, ...) shQuote(x)
shQuote doesn't print anything, you probably want print.xx <- function(x, ...) print(shQuote(x)) -Deepayan
print(xx) # ok
[1] "\"abc\""
xx # no output ???? sessionInfo()
R version 2.2.1, 2005-12-20, i386-pc-mingw32 attached base packages: [1] "methods" "stats" "graphics" "grDevices" "utils" "datasets" [7] "base"