On Mar 4, 2015, at 1:18 PM, Rufus <rlagg...@mail.com> wrote: > If I then add Alexander's example define so the def file appears as follows: > --------- > (define rufus 0) > > (define atom? (lambda (arg1) > (and (not (pair? arg1)) > (not (null? arg1))))) > ------------- > > and hit Run I get an error in the I-pane: > > "pair?; this function is not defined”.
When you include this: (define and ‘dummy) Do you get: define: expected a variable name, or a function name and its variables (in parentheses), but found a keyword instead of the `pair?` error? ____________________ Racket Users list: http://lists.racket-lang.org/users
