Book Image

Swift Cookbook. - Second Edition

By : Keith Moon, Chris Barker
Book Image

Swift Cookbook. - Second Edition

By: Keith Moon, Chris Barker

Overview of this book

Swift is an exciting, multi-platform, general-purpose programming language, and with this book, you'll explore the features of its latest version, Swift 5.3. The book begins with an introduction to the basic building blocks of Swift 5.3, its syntax, and the functionalities of Swift constructs. You’ll then discover how Swift Playgrounds provide an ideal platform to write, execute, and debug your Swift code. As you advance through the chapters, the book will show you how to bundle variables into tuples or sets, order your data with an array, store key-value pairs with dictionaries, and use property observers. You’ll also get to grips with the decision-making and control structures in Swift, examine advanced features such as generics and operators, and explore functionalities outside of the standard library. Once you’ve learned how to build iOS applications using UIKit, you'll find out how to use Swift for server-side programming, run Swift on Linux, and investigate Vapor. Finally, you'll discover some of the newest features of Swift 5.3 using SwiftUI and Combine to build adaptive and reactive applications, and find out how to use Swift to build and integrate machine learning models along with Apple’s Vision Framework. By the end of this Swift book, you'll have discovered solutions to boost your productivity while developing code using Swift 5.3.
Table of Contents (14 chapters)
12
About Packt

Using advanced operators

Swift is a programming language that takes a relatively small number of well-defined principles and builds on them to create expressive and powerful language features. The concept of mathematical operators, such as +, -, *, and / for addition, subtraction, multiplication, and division, respectively, seems so fundamental as to not warrant a mention. However, in Swift, this common mathematical functionality is built on top of an underlying operator system that is extensible and powerful.

In this recipe, we will look at some of the more advanced operators provided by the Swift standard library, and in the next recipe, we will create our own custom operators.

How to do it...

The operators we will explore are known as bitwise operators and are used to manipulate numerical bit representations.

An integer value in Swift can be represented in its binary form by prefixing the integer literal with 0b:

let zero: Int  = 0b000 
let one: Int = 0b001
let two: Int = 0b010...