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"Free" cheatsheet #458

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JordanMartinez opened this issue Mar 27, 2020 · 0 comments
Open

"Free" cheatsheet #458

JordanMartinez opened this issue Mar 27, 2020 · 0 comments
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enhancement New feature or request ToResearch Something I want to look into more. It might appear in this repo later or not.

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@JordanMartinez
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This was posted in the Haskell Slack:

you could model the free "whatever" [i.e. Free Monad, Free Applicative, etc.] generated by a given functor as:

-- Using poly kinds' kind signatures here for clarity of idea
type Free :: ((Type -> Type) -> Constraint) -> (Type -> Type) -> Type -> Type
type Free c f a = forall g. c g => (f ~> g) -> g a
@JordanMartinez JordanMartinez added enhancement New feature or request ToResearch Something I want to look into more. It might appear in this repo later or not. labels Mar 27, 2020
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