Real World Haskell's chapter 4 has the following problem:
Write a function splitWith that acts similarly to words, but takes a predicate and a list of any type, and splits its input list on every element for which the predicate returns False.
I really wanted to do this with a foldr. The problem just seems to call for fold. Here is my attempt. I put a bit extra there to make sure I handle things I didn't like.
I feel dirty.
