free monad

StockFighter is a game by Patrick McKenzie (Hi Patrick!) and others that makes you compete in a virtual Stock Exchange to accomplish certain objectives. They use it as a recruitment tool (kind of, read their website) but it’s a very entertaining game, even if you are not looking for a new job.

My previous post on Free Monad implemented a few DSL using Free Monads. The same day I published it I discovered FreeK by Pascal Voitot. How does FreeK help you when building a Free Monad?

The concept of Free Monad is becoming popular, or at least I’ve seen plenty of mentions about it in the Scala Functional Programming community as of late. Why is it relevant?