November 2014
Intermediate to advanced
912 pages
21h 51m
English
Content preview from iOS 8 Swift Programming CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 1. The Basics
1.0. Introduction
In order to write apps for iOS, you need to know some of the basics of the Swift programming language that we will use throughout this book. Swift is Apple’s new programming language introduced in Xcode 6 and iOS 8 SDK. Objects and classes are fundamental in object-oriented programming (OOP) languages such as Swift, Objective-C, Java, C++, and many others.
All iOS applications essentially use the model-view-controller (MVC) architecture. Model, view, and controller are the three main components of an iOS application from an architectural perspective.
The model is the brain of the application. It does the calculations and creates a virtual world for itself that can live without the views and controllers. In other words, think of a model as a virtual copy of your application, without a face!
A view is the window through which your users interact with your application. It displays what’s inside the model most of the time, but in addition to that, it accepts users’ interactions. Any interaction between the user and your application is sent to a view, which then can be captured by a view controller and sent to the model.
The controller in iOS programming usually refers to the view controllers I just mentioned. Think of a view controller as a bridge between the model and your views. This controller interprets what is happening on one side and uses that information to alter the other side as needed. For instance, if the user changes a field in a view, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.