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tonymorris/c.hs

Created April 17, 2019 05:57
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c.hs
cancelUnit ::
Iso (a, ()) (b, ()) a b
cancelUnit =
iso
(\(a, ()) -> a)
(\b -> (b, ()))
cancelVoid ::
Iso (Either a Void) (Either b Void) a b
cancelVoid =
dimap (either id absurd) (fmap Left)
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