Swift has been functional programming language from the day it was released to public. Swift has many features that makes developing apps not only fun but easy as well.

Functional programming is a programming paradigm where programs are constructed by applying and composing functions. It is a declarative programming paradigm in which function definitions are trees of expressions that map values to other values, rather than a sequence of imperative statements which update the running state of the program.

In functional programming, functions are treated as first-class citizens, meaning that they can be bound to names (including local identifiers), passed as arguments, and returned from other functions, just as any other data type can. This allows programs to be written in a declarative and composable style, where small functions are combined in a modular manner.

At the heart of these functional concepts is your higher order functions, a higher-order function is a function that does at least one of the following: takes one or more functions as arguments, returns a function as its result. All other functions are first-order functions.

In this course you will learn to apply Swift higher order functions so you can apply them in your day to day programming.