On Fri, Jun 27, 2014 at 3:32 PM, Manfred Lotz <manfred.l...@arcor.de> wrote: > > Argument 3: > Expected: (-> b) > Given: False
This is the key part of the error message: you have to provide a function as the third argument, and you provided `#f`. I'd just change that to (lambda () #f). Sam ____________________ Racket Users list: http://lists.racket-lang.org/users