Hallo,
On Sat, Jan 30, 2010 at 8:41 PM, joe tex joetex1@gmail.com wrote:
I am a scheme newbie currently reading "The Little Schemer" The book provides the function for atom as follows.
------- atom.scm---------------- (define atom? (lambda (x) (and (not (pair? x)) (not null? x))))
However when I use it with Gambit, it shows the following error message. as follows:
Change (not null? x) to (not (null? x)).
Cheers,