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Learning Swift Second Edition

Learning Swift Second Edition

By : Andrew J Wagner
5 (1)
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Learning Swift Second Edition

Learning Swift Second Edition

5 (1)
By: Andrew J Wagner

Overview of this book

Swift is Apple’s new programming language and the future of iOS and OS X app development. It is a high-performance language that feels like a modern scripting language. On the surface, Swift is easy to jump into, but it has complex underpinnings that are critical to becoming proficient at turning an idea into reality. This book is an approachable, step-by-step introduction into programming with Swift for everyone. It begins by giving you an overview of the key features through practical examples and progresses to more advanced topics that help differentiate the proficient developers from the mediocre ones. It covers important concepts such as Variables, Optionals, Closures, Generics, and Memory Management. Mixed in with those concepts, it also helps you learn the art of programming such as maintainability, useful design patterns, and resources to further your knowledge. This all culminates in writing a basic iOS app that will get you well on your way to turning your own app ideas into reality.
Table of Contents (14 chapters)
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13
Index

Projects

If we want to move away from developing with a single file, we need to move away from playgrounds and create our first project. In order to simplify the project, we are going to create a command-line tool. This is a program without a graphical interface. As an exercise, we will redevelop our example program from Chapter 2, Building Blocks – Variables, Collections, and Flow Control which managed invitees to a party. We will develop an app with a graphical interface in Chapter 11, A Whole New World – Developing an App.

Setting up a command-line Xcode project

To create a new command-line tool project, open Xcode and from the menu bar on the top, select File | New | Project…. A window will appear allowing you to select a template for the project. You should choose Command Line Tool from the OS X | Application menu:

Setting up a command-line Xcode project

From there, click Next and then give the project a name like Learning Swift Command Line. Any Organization Name and Identifier are fine. Finally, make...

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