Plurrrr

Functional Programming is, like Object Oriented Programming (OOP), a programming paradigm. There isn't a formal agreed-upon definition of what FP entails, but there are two core concepts most people would agree are central to the paradigm:

1. Avoiding mutating state and side-effects
2. Using functions as the central building block of programs

Lets discuss each of these in turn.

Property wrapper is the Swift language feature that allows us to define a custom type, that implements behavior from get and set methods, and reuse it everywhere.