掌握Swift 3在Linux平台开发高效应用

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"《Mastering Swift 3 for Linux 2017》是一本由Jon Hoffman撰写的专业书籍，专为在Linux平台上构建快速且健壮的应用程序而设计。本书是Packt Publishing出版，版权所有，未经事先书面许可，禁止任何形式的复制、存储或传输。尽管作者和出版社已经尽了最大的努力确保书中信息的准确性，但书中的内容不带任何保证，无论是明示的还是暗示的，不会对因本书使用导致的直接或间接损失承担责任。该书的目标是帮助读者掌握Swift 3语言在Linux环境下的应用开发，这是苹果的编程语言，特别适用于iOS和macOS之外的系统，如服务器端开发、命令行工具以及嵌入式设备。Swift 3以其简洁的语法、性能优化和面向对象的特性，使其成为Linux平台上的热门选择。书中内容包括但不限于：Swift 3语言的基础知识，如类、结构体、枚举和函数的使用；如何在Linux环境下设置开发环境，包括依赖管理（如CocoaPods）和包管理器；Linux系统调用和文件系统操作；网络编程、并发处理和多线程；以及如何利用Linux的异步I/O模型优化应用程序性能。此外，还可能涉及安全性、错误处理和调试技巧，这些都是在Linux上构建高质量应用的关键要素。作为一本专业教程，它不仅提供了理论知识，还包含了许多实践项目，使读者能在实际操作中加深理解和技能提升。读者在阅读过程中，可以学习到如何将Swift 3的优势充分发挥在Linux平台的各种应用场景中，比如Web服务、后台任务或者嵌入式设备的控制。然而，由于出版时间是2017年，因此书中可能会有一些Swift 4或更高版本的更新内容，但基础原理和核心概念依然适用。对于希望拓展技术栈，尤其是对Linux开发感兴趣的Swift开发者来说，《Mastering Swift 3 for Linux 2017》是一本不可或缺的参考资料。"

Preface

In December 2015, Apple released Swift as an open source project on its GitHub page. With

this release, Apple also released a version of Swift for Linux. Swift is a general-purpose

programming language that takes a modern approach to development.

What this book covers

Chapter 1, Taking the First Steps with Swift, gives a brief introduction to the Swift language.

We will also cover the basic Swift language syntax and discuss proper language styles.

Chapter 2, Learning About Variables, Constants, Strings, and Operators, shows how to use

variables and constants in Swift. We will also look at the various data types and how to use

operators in Swift.

Chapter 3, Using Swift Collections and the Tuple Type, looks at how we can use the Swift

collection types to store related data. These collection types are the dictionary, array and set

types.

Chapter 4, Control Flow and Functions, covers control flow and functions in Swift. It is

essential to understand the concepts in this chapter before going on. Every application that

we write, beyond the simple Hello World applications, will rely very heavily on the control

flow statements and functions.

Chapter 5, Classes and Structures, dedicates itself to Swift's classes and structures. We'll look

at what makes them similar and what makes them different. We'll also look at access

controls and object-oriented design. We'll close this chapter out by looking at memory

management in Swift.

Chapter 6, Using Protocols and Protocol Extensions, covers both protocols and protocol

extensions in detail since protocols are very important to the Swift language. Having a solid

understanding of them will help us write flexible and reusable code.

Chapter 7, Protocol-Oriented Design, covers the best practices of protocol-oriented Design

with Swift. It will be a brief overview of what is covered in my Swift 3 Protocol-Oriented

Programming book.

Chapter 8, Writing Safer Code with Error Handling, looks at Swift's error-handling features.

This feature is really important for writing safe code. While we are not required to use this

feature in our custom types however it does give us a uniform manner to handle and

Preface

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respond to the error. Apple has also started to use this error handling in their frameworks.

It is recommended that we use error handling in our code.

Chapter 9, Custom Subscripting, discusses how we can use custom subscripts in our classes,

structures, and enumerations. Subscripts in Swift can be used to access elements in a

collection. We can also define custom subscripts for our classes, structures, and

enumerations.

Chapter 10, Using Optional Types, explains what optional types really are, what the various

ways to unwrap them are, and optional chaining. For a developer who is just learning Swift,

optional types can be one of the most confusing items to learn.

Chapter 11, Working with Generics, explains how Swift implements generics. Generics allow

us to write very flexible and reusable code that avoids duplication.

Chapter 12, Working with Closures, teaches us how to define and use closures in our code.

Closures in Swift are similar to blocks in Objective-C except that they have a much cleaner

and easier to use syntax. We will conclude this chapter with a section on how to avoid

strong reference cycles with closures.

Chapter 13, Using C Libraries with Swift, explains how we can link and use standard C

libraries with our Swift applications. This gives Swift developers access to all of the same

libraries that Linux C developers have access to.

Chapter 14, Concurrency and Parallelism in Swift, shows how to use Grand Central Dispatch

(GCD) to add concurrency and parallelism to our applications. Understanding and

knowing how to add concurrency and parallelism to our apps can significantly enhance the

user experience.

Chapter 15, Swift's Core Libraries, explains how to use the Swift core libraries, including

reading/writing files, network primitives, and JSON parsing.

Chapter 16, Swift on Single Board Computers, shows how we can use Swift to develop IoT

devices and robots using a single board computer.

Chapter 17, Swift Formatting and Style Guide, defines a style guide for the Swift language

that can be used as a template for enterprise developers who need to create a style guide,

since most enterprises have style guides for the various languages that they develop in.

Chapter 18, Adopting Design Patterns in Swift, shows you how to implement some of the

more common design patterns in Swift. A design pattern identifies a common software

development problem and provides a strategy for dealing with it.

Preface
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