While LYAH is a lot of fun, if you've gotten your feet wet with Haskell for a while and want to see some really powerful examples of "functionally solving probl

While LYAH is a lot of fun, if you've gotten your feet wet with Haskell for a while and want to see some really powerful examples of "functionally solving problems" I cannot recommend more highly Richard Bird's "Pearls of Functional Algorithm Design"[0]. All of the "Functional Pearls" papers are worth a read, but Bird's book is such a compressed, convenient, powerful collection of advanced functional problem solving style that I think anyone interested in "thinking" functionally should strive to read it. It's not exactly for the faint of heart, to be clear. Bird's idea is that we can establish certain mathematical rules which allow us to transform "the simplest thing which could possibly be correct" to an efficient program through a series of steps, each one maintaining correctness as an invariant. [0] http://www.amazon.com/Pearls-Functional-Algorithm-Design-Richard/dp/0521513383 http://www.amazon.com/Pearls-Functional-Algorithm-Design-Ric...