"So, the last few weeks I’ve been learning the Haskell programming language, and thought I’d share my thoughts on it. Haskell is a pure functional programming language that supports lazy evaluation (I’ll explain all that in a moment), which has been gaining popularity in some circles (and particularly among academia and computer lingusts). It has (semi-)famously been used to write an implementation for the Perl 6 programming language, and also a distributed revision control system (DaRCS)..." --
* Welcome to Real World Haskell