Re: [Haskell-cafe] Monad transformer to consume a list

Henning Thielemann wrote:

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But this is precisely the StateT, wrapped in a newtype and with restricted operations on it. You could as well define

newtype ConsumerT c m a = ConsumerT { runConsumerT :: StateT [c] m a }

Oh I see - my bad. I was somehow thinking I could prevent modification of the input list but that's obviously impossible when the ConsumerT constructor is... exported? public? how do you say that?

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//Stephan -- Früher hieß es ja: Ich denke, also bin ich. Heute weiß man: Es geht auch so. - Dieter Nuhr