[Haskell-cafe] Re: Books for "advanced" Haskell

[Heinrich Apfelmus]

Stephen Tetley wrote:
>
> To work with monads in Haskell its not ignoble simple to decide what
> effect or combination of effects you want and use the relevant monad
> (for a single effect) or build a transformer (for multiple effects).

... or use the "free term algebra" approach outlined in

  http://apfelmus.nfshost.com/articles/operational-monad.html

when the semantics of the effects are a bit tricky to fit into existing
transformers. My package "operational"

  http://projects.haskell.org/operational/

contains a bunch of examples.


Regards,
Heinrich Apfelmus

--
http://apfelmus.nfshost.com