Swift Programming: The Big Nerd Ranch Guide

Part IV Enumerations, Structures, and Classes

You will be learning about a lot of new tools and concepts in this part of the book. You will be adding features to projects that you will change in later projects. This will simulate the act of writing code in a real way: Sometimes you start developing an application with one solution in mind and then have to modify your code when you learn a better pattern or if a feature has changed. That does not mean the first code or tools were bad – just that they would be better for other circumstances. Projects often evolve and develop, and decisions that are ideal at one stage may become inadequate as requirements change. Learning to be flexible in the face of these changes is part of the trade. ...