help for exercise 4.10

Mark Carroll
Thu, 11 Oct 2001 15:30:57 -0400 (EDT)

On Fri, 12 Oct 2001, rock dwan wrote:

> Iam having some difficulties doing exercise 4.10 from craft of functional 
> programming book second edition their a possible solution for this ?

How far have you got with it so far? I'm sure we'd prefer to help you
along instead of just giving a solution. Have you done exercise 4.9?

-- Mark