May 2016
Beginner
350 pages
12h 24m
English
Content preview from Learning Swift
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Chapter 2. The Basics of Swift
The Swift programming language was first introduced in June 2014 at Apple’s Worldwide Developers Conference (WWDC). Swift was a surprise to everyone: Apple had managed to develop an entire language (as well as all of the supporting libraries, developer tools, and documentation) and make it work seamlessly with the existing Objective-C language. And on top of that, it was a really good “1.0” language.
In June 2015, Apple announced Swift 2.0, improving the performance of the language, adding a collection of new features, and making the Cocoa and Cocoa Touch platform APIs more Swift-like in style. Swift was open sourced on December 3, 2015. We can expect Swift to evolve over time, in line with the developments in the Swift Open Source project.
Tip
Xcode supports having multiple versions of the Swift language installed. You might have a different version of the language if, for example, you’ve downloaded a copy of Swift from the open source project. For information on how to get a copy and use it in Xcode, go to the Swift project’s Download page.
This book covers version 2.2 of Swift.
Tip
If you have older Swift code that you need to update to the latest stable Swift syntax, Xcode provides a converter. Open the Edit menu and choose Convert→To Latest Swift Syntax… to get started.
Swift draws upon an extensive history of language design and has a number of very cool design features that make developing software easier, simpler, and safer. We’ll begin ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.