Free monads

[Mario Blažević]

On 13-10-03 02:01 AM, Andres L?h wrote:
> I'm also looking for as many compelling examples as possible. Like
> Simon, I don't want to know anything secret or anything that you
> wouldn't like me to include in my talk. Most useful are pointers to
> existing libraries using free monads that I might have missed (for
> example, because they're new or very specialized).

	The most common use case is for coroutines, as evidenced by pipes and 
conduits. My old article from the Monad.Reader issue #19 covers some 
basics, so you may find it useful.