A Haskell I can get behind

http://augustss.blogspot.com/2007/08/programming-in-c-ummm-haskell-heres.html

>>12
Yes, it works like map(A,func), but that one's for arrays only. How would you go about abstracting it to different collection types like trees and hash-maps? Also is the func just a (void *) pointer, or does its type actually get checked when it's applied to func(A[i])?