Reader is not just a function, isn’t it?
Is Reader is just a synonym to function?
Is Reader is just a synonym to function?
Explore Cats Semigroupal, Apply, Applicative: product, ap, mapN and friends
Explore Cats Functor. Understanding of “contramap” function
Explore Cats Writer. Monad to bring description with any computation unit.
Explore Cats Eq, Partial Order, Order typeclasses. Notion of equality and why greatest element of set is not equal to maximal.