+1 for this, also check out Graham's io9 video on the Counting Problem. The solution is beautiful and really got me excited about Haskell when I was first learn

+1 for this, also check out Graham's io9 video on the Counting Problem. The solution is beautiful and really got me excited about Haskell when I was first learning: http://channel9.msdn.com/Series/C9-Lectures-Erik-Meijer-Functional-Programming-Fundamentals/C9-Lectures-Dr-Graham-Hutton-Functional-Programming-Fundamentals-Chapter-11-of-13 http://channel9.msdn.com/Series/C9-Lectures-Erik-Meijer-Func...