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14 lines
254 B
Plaintext
14 lines
254 B
Plaintext
structural type Optional a = None | Some a
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Optional.isEmpty : Optional a -> Boolean
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Optional.isEmpty = cases
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Optional.None -> true
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Optional.Some _ -> false
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increment x = x + 1
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(|>) : forall a b . a -> (a -> b) -> b
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a |> f = f a
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> Optional.Some 4
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