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(.using
[library
[lux (.except)]]
[// (.only CoMonad)
[//
[functor (.only Functor)]]])
(type: .public (Free F a)
[a (F (Free F a))])
(def .public (functor dsl)
(All (_ F) (-> (Functor F) (Functor (Free F))))
(implementation
(def (each f [head tail])
[(f head) (at dsl each (each f) tail)])))
(def .public (comonad dsl)
(All (_ F) (-> (Functor F) (CoMonad (Free F))))
(implementation
(def functor (..functor dsl))
(def (out [head tail])
head)
(def (disjoint [head tail])
[[head tail]
(at dsl each disjoint tail)])))
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