Numbers that look equal, should be equal, but if() doesn
On 28-May-03 Barry Rowlingson wrote:
Oh, why not just go one step further, and redefine the == operator!
"==" <- function(x,y){equal.enough(x,y)}
before:
> (.1+.2)==.3
[1] FALSE after:
> (.1+.2)==.3
[1] TRUE This requires a slight modification to equal.enough, which I will not list here, so that people dont _actually_ do this. It just ensures that equal.enough doesn't go all infinitely recursive on us. Next time on useless R tips: 1 + 1 = 3
At which point I am unable to resist quoting: "2 plus 2 is never equal to 5 -- even for large values of 2". Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <Ted.Harding at nessie.mcc.ac.uk> Fax-to-email: +44 (0)870 167 1972 Date: 29-May-03 Time: 00:03:19 ------------------------------ XFMail ------------------------------