Higher-Order Functions

A Higher-Order Function (HOF) is a function that either takes one or more functions as arguments or returns a function as a result.

This concept is fundamental in functional programming and is commonly found in languages like JavaScript, Python, Haskell, and Lisp.

• They also enable functional programming paradigms like map, filter, and reduce.
• All higher-order functions rely on first-class functions, but not all first-class functions are higher-order functions.