Higher order functions *are* the Haskell experience

This is a great way to put this: “Higher-order functions aren’t just a part of the Haskell experience, the pretty much are the Haskell experience.”

(A “higher-order function” is generally defined as (a) a function that can take a function as an input parameter, or (b) returns a function as a return value.)

The quote and image come from this LYAHFGG page.