An applicative functor morphism is a polymorphic function,
eta : forall a. A1 a -> A2 a between two applicative functors A1 and A2
that preserve pure and <*>:
eta (pure c) = pure c
eta (f <*> x) = eta f <*> eta x
What do you guys call such a thing? My leading candidate is "idomatic
transformation".
--
Russell O'Connor <http://r6.ca/>
``All talk about `theft,''' the general counsel of the American Graphophone
Company wrote, ``is the merest claptrap, for there exists no property in
ideas musical, literary or artistic, except as defined by statute.''
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