Re: [Haskell-cafe] case switch covering all possible constructor but still fails

Oh, so obvious. That was it, thanks. On 04/13/2013 12:08 PM, Daniel Trstenjak wrote:

Hi Nathan,

...

DataAlt c | Right tag <- genDataConTag c -> return $ Cond tag

Are you sure, that genDataConTag always returns a 'Right'? If it returns a 'Left', than the pattern won't match.

Greetings, Daniel

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