Bulat Ziganshin wrote:
Hello all
why the folowing is not allowed even with all extensions enabled both
in Hugs and GHC?
class BufStream h where
class CharStream h where
instance (CharStream h) => BufStream h where
class MemoryStream h where
instance (MemoryStream h) => BufStream h where
Try this:
class (BufStream h) => CharStream h where
class (BufStream h) => MemoryStream h where
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