Book Image

Swift 5 New Features [Video]

By : Dee Aliyu Odumosu
Book Image

Swift 5 New Features [Video]

By: Dee Aliyu Odumosu

Overview of this book

<p>If you are already a Swift programmer, this course will get you up-to-date with all the new features in Swift 5 to improve your productivity and efficiency. </p><p>You will become fully acquainted with the new String ergonomics and improvements to the current Swift Standard Library, and discover some new examples of syntactical sugar that will let you write shorter but more powerful code. You will learn about the new result type for handling errors, thereby making your code more robust. Finally, you will learn how to migrate to Swift 5 as easily as possible. </p><p>By the end of the course, you will have gained up-to-date insights into all of Swift 5's features and will be able to code efficiently and rapidly within your projects. </p><p>The code bundle is available at: https://github.com/PacktPublishing/-Swift-5-New-Features</p>
Table of Contents (6 chapters)
Chapter 2
Working with Strings and Enums
Content Locked
Section 3
Flattening Nested Optionals
Prior to Swift 5, when we had nested optionals, we had called a try on this nested optionals, the result of which are not flattened, meaning, that if we have five nested optionals, then we have to unwrap the final value five times, which can be a time consuming and inefficient exercise. Swift 5 changed this behavior. If we have five nested optionals and we call a try on it, we only get a single unwrapped optional to unwrap.