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by andolanra
3082 days ago
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This isn't two functions: it's actually one function defined by cases. You can think of it as equivalent to fn x y = case (x, y) of
(Just q, Just z) -> q + z
(_, _) -> 0
but the case becomes implicit in the repetition of the function name at the top level of indentation. |
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At the same level, really - it works in a let or a where as well.