The multiplate paper makes an observation that we can rewrite the type of VL lenses as a map between coalgebras:
Lens a b = forall f . Functor f => Coalgebra f b -> Coalgebra f a
Does this have a generalisation to polymorphic lenses?
Since `a -> f b` is no longer a coalgebra
Zanzi /
npub120…m0kr6
2024-01-29 18:35:07
Author Public Key
npub1209g7ledr786gag4u5el25q7l4gxjakuyw5srurn8d2hsxdt4szqwm0kr6Published at
2024-01-29 18:35:07Event JSON
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"content": "The multiplate paper makes an observation that we can rewrite the type of VL lenses as a map between coalgebras:\n\nLens a b = forall f . Functor f =\u003e Coalgebra f b -\u003e Coalgebra f a\n\nDoes this have a generalisation to polymorphic lenses?\n\nSince `a -\u003e f b` is no longer a coalgebra",
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