[Haskell-cafe] Questions about Functor, Applicative, Monad
corentin.dupont at gmail.com
Mon May 5 22:31:41 UTC 2014
Two questions in one:
- When you define and instance of a Monad, why don't you get the
Applicative and Functor instances for free? I seem that you can
mechanically write them.
- Do you have examples of things that are Functors but not Applicative?
Applicative but not Monads?
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