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

Anthony LODI anthony.lodi at gmail.com
Thu Sep 25 13:56:28 EDT 2008

On Thu, Sep 25, 2008 at 10:34 AM, Henning Thielemann
<lemming at henning-thielemann.de> 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.

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