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- Herausgeber: Packt Publishing
- Kategorie: Wissenschaft und neue Technologien
- Sprache: Englisch
Swift greatly simplifies the process of developing applications for Apple devices. This book provides you with the essential skills to help you get started with developing applications using Swift.
Key Features
- Teaches you how to correctly structure and architect software using Swift
- Uses real-world examples to connect the theory to a professional setting
- Imparts expertise in the core Swift standard library
Book Description
Take your first foray into programming for Apple devices with Swift.Swift is fundamentally different from Objective-C, as it is a protocol-oriented language. While you can still write normal object-oriented code in Swift, it requires a new way of thinking to take advantage of its powerful features and a solid understanding of the basics to become productive.
What you will learn
- Explore the fundamental Swift programming concepts, language structure, and the Swift programming syntax
- Learn how Swift compares to other computer languages and how to transform your thinking to leverage new concepts such as optionals and protocols
- Master how to use key language elements, such as strings and collections
- Grasp how Swift supports modern application development using advanced features, such as built-in Unicode support and higher-order functions
Who this book is for
If you are seeking fundamental Swift programming skills, in preparation for learning to develop native applications for iOS or macOS, this book is the best for you. You don't need to have any prior Swift knowledge; however, object-oriented programming experience is desired.
Das E-Book können Sie in Legimi-Apps oder einer beliebigen App lesen, die das folgende Format unterstützen:
Seitenzahl: 200
Veröffentlichungsjahr: 2018
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Table of Contents
Beginning Swift
Beginning Swift
Copyright © 2018 Packt Publishing
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Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
Acquisition Editor: Aditya Date
Content Development Editor: Taabish Khan
Production Coordinator: Vishal Pawar
First published: May 2018
Production reference: 1310518
Published by Packt Publishing Ltd.
Livery Place
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Birmingham B3 2PB, UK.
ISBN 978-1-78953-431-3
www.packtpub.com
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Contributors
About the Authors
Rob Kerr is a mobile software architect based in United States. He has been working professionally with Swift since its introduction, delivering applications to the public App Store and through enterprise distribution. His current focus is developing state-of-the-art iOS applications using Swift in the IoT space.
Kåre Morstøl is an independent software developer from Norway, with a bachelor's degree in software development. He has programmed almost exclusively in Swift since it was announced. He thinks it's a great language that is continually getting better.
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Preface
Swift is a multi-paradigm language. It has expressive features familiar to those used to working with modern functional languages, whilst also keeping the object-oriented features of Objective-C. Swift vastly streamlines the developer experience, and Apple's Xcode playground is a real game-changer.
The book begins by teaching you the basic syntax and structure of Swift, and how to correctly structure and architect software using Swift. It then builds expertise in the core Swift standard library you will need to understand to complete real-world Swift programming projects. We will work through concepts such as operators, branching and loop structures, functions, classes, structs, collections, and strings. We end the book with a brief look at functional programming and lazy operations.
After reading and understanding this book, you will be well-prepared to begin developing native end-user applications for iOS or macOS, or to develop server-side (backend) application and web services using Swift on Linux.
What This Book Covers
Lesson 1, Swift Basics, covers the fundamentals of using the Swift programming language. In this lesson, you'll learn basic Swift syntax and program structure. You'll also learn how to use Swift built-in data types and enums, and how to declare and use Swift variables and constants.
Lesson 2, Swift Operators and Control Flow, shows you how to use the fundamental flow control structures and language elements that form the building blocks of Swift programs. We will specifically cover operators, branching statements, and loops in this lesson.
Lesson 3, Functions, Classes, and Structs, teaches you how to develop fully featured Swift functions, catch unexpected errors, and use asynchronous programming paradigms. You'll learn how to create your own data types, and create object-oriented applications using classes and structs.
Lesson 4, Collections, shows you how to work with Swift's collections, such as arrays, sets, and dictionaries.
Lesson 5, Strings, covers Swift strings in detail. We will create and use strings and substrings, and see the various common operations available for strings.
Lesson 6, Functional Programming and Lazy Operations, ventures at functional programming and explains what lazy operations are. We will end this lesson with an important but often overlooked topic—writing Swifty code.
What You Need for This Book
This book will require the following hardware:
Please ensure you have the following software installed on your machine:
Who This Book is for
This book is ideal for developers seeking fundamental Swift programming skills, in preparation for learning to develop native applications for iOS or macOS. No prior Swift knowledge is expected but object-oriented programming experience is desirable.
You should have basic working knowledge of computer programming in a procedural/object-oriented language, such as Objective-C, BASIC, C++, Python, Java, or JavaScript.
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Chapter 1. Swift Basics
Swift is a relatively new programming language designed by Apple Inc., and was initially made available to Apple developers in 2014—primarily intended as a replacement for the aging Objective-C language that was the foundation of OS X and iOS software development at the time.
Unlike many object-oriented languages, which are based on older procedural languages—for example, C++ and Objective-C are based on C—Swift was designed from the ground up as a new, modern, object-oriented language that makes programming faster and easier, and helps developers produce expressive code that's less prone to errors than many languages.
While not based on an older language, Swift, in the words of its chief architect, Chris Lattner, "was inspired by drawing ideas from Objective-C, Rust, Haskell, Ruby, Python, C#, CLU, and far too many others to list." (Chris Lattner home page: http://nondot.org/sabre/).
Swift was initially a proprietary language, but was made open source software in December 2015 as of its version 2.2. While Swift remains primarily used by developers targeting the Apple macOS and iOS platforms, Swift is also fully supported on Linux, and there are unofficial ports under development for Windows as well.
The objective of this lesson is to learn the fundamentals of using the Swift programming language. In this lesson, you'll learn basic Swift syntax and program structure. You'll also learn how to use Swift built-in data types and enums, and how to declare and use Swift variables and constants. Let's get started.
Lesson objectives
By the end of this lesson, you will be able to:
