I have found an interesting program: #lang racket (let ([x 1]) (cond [(= x 1) (define u 2) (+ u 1)] [else u]))
When run gives a very reasonable error message: expand: unbound identifier in module in: u When (let ([x 1]) (cond [(= x 1) (define u 2) (+ u 1)] [else u])) is pasted into the interaction window, I get 3 ! I was expecting an error. Welcome to DrRacket, version 5.3.0.6--2012-05-11(9401a53/a) [3m]. Language: racket; memory limit: 128 MB. . expand: unbound identifier in module in: u > (let ([x 1]) (cond [(= x 1) (define u 2) (+ u 1)] [else u])) 3 ____________________ Racket Users list: http://lists.racket-lang.org/users
