Zygohistomorphic prepromorphisms
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Used when you really need both semi-mutual recursion and history and to repeatedly apply a natural transformation as you get deeper into the functor.
zygohistomorphic_prepromorphism :: Algebra f b -> GAlgebra f (Cofree f) a -> (f :~> f) -> FixF f -> a zygohistomorphic_prepromorphism f = g_prepro (distZygoT (liftAlgebra f) (distHisto id)) -- unless you want a generalized zygomorphism.