Book Image

Swift 3 New Features

By : Keith Elliott
Book Image

Swift 3 New Features

By: Keith Elliott

Overview of this book

Since Swift was introduced by Apple in WWDC 2015, it has gone on to become one of the most beloved languages to develop iOS applications with. In the new version, the Swift team aimed to take its adoption to the next level by making it available for new platforms and audiences. This book will very quickly get you up to speed and productive with Swift 3. You will begin by understanding the process of submitting new feature requests for future versions of Swift. Swift 3 allows you to develop and run your applications on a Linux machine. Using this feature, you will write your first Linux application using the debugger in Linux. Using Swift migrator, you will initiate a conversion from Swift 2.2 to Swift 3. Further on, you will learn how to interact with Cocoa libraries when importing Objective C to Swift. You will explore the function and operator changes new to Swift 3, followed by Collection and Closure changes. You will also see the changes in Swift 3 that allow you write tests easier with XCTest and debug your running code better with new formats as well. Finally, you will have a running server written completely in Swift on a Linux box. By the end of the book, you will know everything you need to know to dive into Swift 3 and build successful projects.
Table of Contents (16 chapters)
Swift 3 New Features
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
5
Function and Operator Changes – New Ways to Get Things Done

Chapter 8. Oh Goodness! Look Whats New in the Foundation Framework

Last year, Apple delivered a great talk on the benefits of using value types and protocol-oriented design patterns in our code. This year with Swift 3, the team at Apple added value types to the Foundation framework. Many of our favorite and heavily used classes now have value type equivalents. We will cover how to use Foundation value types throughout this chapter and have you wondering why value types weren't included with Swift from the beginning!

New to Foundation and made possible by Swift 3, the new measurements and units API https://developer.apple.com/reference/foundation/nsmeasurement addresses pain points that have been with Objective-C and Swift developers for a long time. Apple has created an extremely well thought out solution to our problems. We will use several examples to hammer in the concepts so that you will leave this chapter better prepared to handle your measurement challenges in the future.