2 tcfail208.hs:4:19: error:
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3 Could not deduce (Eq (m a)) arising from a use of â==â
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4 from the context: (Monad m, Eq a)
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5 bound by the type signature for:
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6 f :: (Monad m, Eq a) => a -> m a -> Bool
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7 at tcfail208.hs:3:1-40
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8 In the expression: (return x == y)
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9 In an equation for âfâ: f x y = (return x == y)
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