What are some interesting uses of higher-order functions?

Question

I\'m currently doing a Functional Programming course and I\'m quite amused by the concept of higher-order functions and functions as first class citizens. However, I can\'t yet

Answer 1

Check out the paper 'Even Higher-Order Functions for Parsing or Why Would Anyone Ever Want To Use a Sixth-Order Function?' by Chris Okasaki. It's written using ML, but the ideas apply equally to Haskell.