[Haskell-cafe] tips on using monads
claus.reinke at talk21.com
Mon May 18 07:20:25 EDT 2009
> I've got one of those algorithms which "threatens to march off the right edge" (in the words of
> Goerzen et al). I need something like a State or Maybe monad, but this is inside the IO monad. So
> I presume I need StateT or MaybeT. However, I'm still (slowly) learning about monads from first
> principles. I thought I might present my code and get some pointers... maybe someone could
> actually show me how to rewrite it, which would be a neat way to see MaybeT and StateT in action.
> I'm hoping to get anything from a one-line response to a rewrite of my code. Anything will help.
Perhaps this is useful:
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