To keep state in a function of type a -> ReaderT r IO b, is my only option to put an IORef in the...

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f, g, h :: Kleisli ((->) e) a b <=> f >>> (g &&& h) = (f >>> ...

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How to use mapReader from Control.Monad.Reader for reader monad?...

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Scala cannot infer parameter type in Reader monad implementation...

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Create ReaderT[F, D, A] from F[A]...

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