Re: [Haskell-beginners] short-circuit like Maybe monad with a difference

I just tried something evalRules :: [Rule] -> Step -> [Double] evalRules rules step = catMaybes . takeWhile isJust . map (flip evalRule step) $ rules This seems to work according to my testing. On Fri, Sep 30, 2016 at 1:32 PM, Imants Cekusins wrote:

...

short-circuits the computation if it hits Nothing. However, unlike the way the Maybe monad works, I want to know the partial results. ​ could store partial results in a State monad.. Maybe would short circuit but the values would stay in the State.

would this work?

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