I was referring to "Impossible" rather than "constant-folding" actually (in the spirit of the same response to "Inconceivable" in the film). Thanks for the explanation, though. It's quite helpful to the thread, where I was simply being humorous with the point that little is impossible when it comes to perl (or Perl, for that matter).
in reply to Re^8: my (0?$a:$b): a koan
in thread my (0?$a:$b): a koan