On 12/6/07, Luke Palmer <[EMAIL PROTECTED]> wrote: > > I have actually seen this pattern a lot recently. Recently I have > started using a function: > > mergeMaybes :: (a -> a -> a) -> Maybe a -> Maybe a -> Maybe a > mergeMaybes f Nothing y = y > mergeMaybes f x Nothing = x > mergeMaybes f (Just x) (Just y) = Just (f x y)
mergeMaybes = liftM2 -- from Control.Monad
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