Using POP
While Swift was initially introduced as an object-oriented language, similar to Java and C#, with Swift version 2.0, it became a protocol-oriented language. Traditionally, a vehicle hierarchy in OOP might be structured with a Vehicle superclass and specific subclasses such as Tank, Submarine, and Jet. However, with Swift’s single inheritance, each class can inherit from only one superclass, which has its limitations.
POP offers a more flexible approach. Instead of building class hierarchies, we define behaviors through protocols. This shift enables us to compose functionality without complex inheritance chains, making our code modular, reusable, and easier to scale.
Before looking at the code, let’s create a basic diagram to illustrate how our protocol-oriented design would look.
Visualizing our protocol-oriented design
Similar to the approach we took with object-oriented design, we will begin by creating a simple diagram to illustrate how to...
