Re: [Haskell-cafe] StateWriter: a monad-writing exercise

On Thu, Sep 25, 2008 at 10:34 AM, Henning Thielemann wrote:

Instead of rewriting from scratch, you can also define

newtype StateWriter l s a = StateWriter (StateT s (Writer l) a)

Thanks for the tip! I knew there must be a way to reuse some of the existing machinery. I'll post back after I try this out.