broken Monad Either instance?

Jake McArthur jake.mcarthur at
Mon Nov 28 20:22:08 CET 2011

I'd just like to add one further remark. If we had a separate
MonadFail class then we could get back the original behavior by
imposing an Error constraint on it, but without the problems we get by
imposing it on the Monad instance instead.

- Jake

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