Re: [Haskell-cafe] a general question on Arrows

On Thu, Feb 14, 2008 at 12:50 AM, Steve Lihn wrote:

He described a few things that "cannot" be represented as a monad, they are: 1. Stream

This is actually a comonad.

2. FRP

Depends on which FRP you're talking about. This could be the stream comonoad + the event monad. Here's another fun arrow: http://luqui.org/blog/archives/2007/09/06/quantum-entanglement-in-haskell/ Luke