Here's a program: #lang racket
(define (even? n) (if (zero? n) true (odd? (sub1 n)))) (define (odd? n) (if (zero? n) false (even? (sub1 n)))) Go to Language | Choose Language, click on Show Details, and at the top-right, select "Debugging and profiling". Now run the program and in the interactions window, run > (even? 25) Go to View | Show Profile. At the bottom of your screen will be the profiling information, showing 13 calls each to even? and odd?. If you run > (even? 25) again in the interactions window, the profile doesn't appear to change. But click on Update Profile (bottom-left) and it'll now show 26 calls each. >From there, mess around! Shriram _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
