or download this
Alice: "Hey - there's some neat code here that does just what my teach
+er asked me to do."
Bob: "Is it any good?"
Alice: "It's from PerlMonks - it must be. It was 4th fom the top. Some
+ people were arguing about it, but look! It works for question 3, so
+who cares?"
Bob: "Give it here - I'll change the variable names so he won't know..
+."