How is `arr fst` a natural transformation?...

What's the relationship between profunctors and arrows?...

Is (\f -> fmap f id) always equivalent to arr?...

Why can I not make a (Functor f) => ConcreteType -> f String into an instance Functor ((->)...

Why there isn't a Functor instance for Kleisli in Control.Arrow?...

Using monads, monoids, functors and arrows in practice...

how to mix applicative functors and arrows...

Why can't MSet be an instance of Functor?...

Seq.iter slower than native mapping : any generic solution?...

Module type semantics in OCaml...

Why does a js map on an array modify the original array?...

Function passed as template argument...

Trouble understanding Haskell type unification with a nested `fmap`...

Why can't I define a function inside another function but can declare function inside another fu...

std::function to functions with default argument...

Haskell void function...

Implementing functions in module types...

How does <$ = (fmap . const) in Functor even work in Haskell?...

Why I get error "The type variable 'a occurs inside 'a t" with enabled -rectypes f...

Menhir Parser Functor?...

Efficiency advantage of C++ 23 static operator()...

Functors not recognized as transform_view args...

Declaration of operator function inside struct...

Searching a way to use different variadic functors basing on condition...

What causes this type mismatch when applying a functor?...

What is the right way to put type declarations in OCaml signatures...

Standard ML functor examples...

Using infix operator in the module in OCaml...

is there a predefined functor for conditional operator in c++?...

Is this property of a functor stronger than a monad?...