Hashable type with overwritten operators or external functors...

Understanding Applicative Functor in Scala...

In Haskell, how to fmap between distinct Traversables?...

Good examples of Not a Functor/Functor/Applicative/Monad?...

In Haskell, how to bind one list-like monad to another list-like monad...

Too many arguments for fmap...

Writing a generic functor instance across type constructors?...

Is Gen an instance of Functor?...

Using functor in haskell...

Alternative way to express StateT Functor instance definition...

How to define (*>), (<*) in terms of (<*>) and pure?...

Compile Errors in Class with User Defined Functions...

In Haskell why Applicatives need to take morphisms and data in same Context?...

How to call std::unique with custom predicate in C++03?...

C++ - proper way to map objects (like strings) to member functions in table...

How to construct fmap for a newtype that houses functions...

How can I instance `Functor` for a type with two parameters?...

Is there a Functor that cannot be a law-abiding Apply?...

Dynamically selecting the comparison functor to be used in std::map...

Functor in Ocaml...

Why does functor composition on an empty list return a Show error?...

Learning how to use contramap when is expected (a -> Maybe b) instead of (a -> b) as the first...

Why does unsafePartial not work with a simple functor in PureScript?...

Is there an intrinsic reason explaining why Rust does not have higher-kinded-types?...

Haskell: Flaw in the description of applicative functor laws in the hackage Control.Applicative arti...

Functor for square matrices...

Map Functor inside another Functor in Haskell...

Can someone explain where Applicative instances arise in this code?...

How are functors in Haskell related to functors in category theory?...

Haskell type classes and instances...