Skip to main content

First-Class Functions ↔ of function equiv to regular Variables

First-Class Citizen​

of entity to support all operations available to other entities, ie variable assignment, passed as function arg or function return

First-Class Functions can be passed into & returned from other functions

image

First-class functions enable writing Higher-Order Function

this allows for more advanced techniques used in paradigms such as Functional Programming

Higher-Order Function​

fn to receive Callback arg, to return fn, or both

References​