Swift 3速成：掌握新功能与平台迁移指南

需积分: 10 133 浏览量更新于2024-07-20 收藏 6.17MB PDF 举报

"《Swift 3：新功能速成指南》是一本针对Swift 3语言最新变化的专业教程，作者是Keith Elliott。自2015年WWDC大会上Apple推出Swift以来，它已经成为iOS应用开发的热门语言。Swift 3版本旨在进一步推广其使用，不仅限于iOS平台，还扩展到了Linux等其他主流平台。本书将帮助读者快速掌握Swift 3，首先介绍如何为Swift未来版本提出新特性建议。Swift 3的一个关键特性是支持在Linux上开发和运行应用程序，读者将通过Linux环境下的调试器编写首个Linux应用，并利用Swift Migrator工具将Swift 2.2项目迁移到Swift 3版本。章节内容涵盖广泛，包括与Objective-C库的交互，学习Swift 3中新引入的函数和运算符变化，以及对Collection和Closure的改进。此外，书中还会探讨Swift 3对高级类型、属性提升、浮点类型改进等方面的改动，以及Swift API和Objective-C在当前API中的操作方式。测试方面，读者将学会使用Swift Testing的新特性和调试工具的更新，如XCTest和新的调试格式。最后一部分，书中会引领读者创建完全使用Swift 3编写的服务器应用程序，不仅限于iOS，而是扩展到了Linux环境。通过阅读这本书，读者将具备开发成功项目的全部技能，无论是从迁移旧项目到Swift 3，还是利用新功能构建跨平台应用。在版权页中，明确指出未经出版商书面许可，不得复制、存储或以任何形式传播此书内容，同时强调尽管作者和出版社努力确保信息准确，但不承担因本书引起的直接或间接损害的责任。该书首次发布于2016年10月，由Packt Publishing出版，版权受到保护。"

Preface
[ 5 ]
You can download the code files by following these steps:
Log in or register to our website using your e-mail address and password.1.
Hover the mouse pointer on the SUPPORT tab at the top.2.
Click on Code Downloads & Errata.3.
Enter the name of the book in the Search box.4.
Select the book for which you're looking to download the code files.5.
Choose from the drop-down menu where you purchased this book from.6.
Click on Code Download.7.
Once the file is downloaded, please make sure that you unzip or extract the folder using the
latest version of:
WinRAR / 7-Zip for Windows
Zipeg / iZip / UnRarX for Mac
7-Zip / PeaZip for Linux
The code bundle for the book is also hosted on GitHub at h t t p s : / / g i t h u b . c o m / P a c k t P u b l
i s h i n g / S w i f t - 3 - N e w - F e a t u r e s. We also have other code bundles from our rich catalog of
books and videos available at h t t p s : / / g i t h u b . c o m / P a c k t P u b l i s h i n g /. Check them out!
Errata
Although we have taken every care to ensure the accuracy of our content, mistakes do
happen. If you find a mistake in one of our books-maybe a mistake in the text or the code-
we would be grateful if you could report this to us. By doing so, you can save other readers
from frustration and help us improve subsequent versions of this book. If you find any
errata, please report them by visiting h t t p : / / w w w . p a c k t p u b . c o m / s u b m i t - e r r a t a, selecting
your book, clicking on the Errata Submission Form link, and entering the details of your
errata. Once your errata are verified, your submission will be accepted and the errata will
be uploaded to our website or added to any list of existing errata under the Errata section of
that title.
To view the previously submitted errata, go to h t t p s : / / w w w . p a c k t p u b . c o m / b o o k s / c o n t e n
t / s u p p o r t and enter the name of the book in the search field. The required information will
appear under the Errata section.

What Were They Thinking?

[ 8 ]

I want to briefly touch on a couple of themes here as it will provide a base for the material

you will find in the remaining chapters:

Apple believes that for Swift to grow in adoption it needs a strong community.

The path to rapid Swift adoption is to include the voices of the community in its

development.

Swift is a general-purpose language that could and should run on any platform.

Imagine running Swift on Linux or on the Internet of Things (IoT) you create or

need to control. Apple believes that the Swift language is so capable that they

removed the barriers that tied Swift to running on a Mac, opening endless

possibilities for platform portability. Apple wants the community to find ways to

get Swift to run on other platforms. Today, the Swift team is supporting a port to

Linux. Tomorrow, the Swift team could have official support for a wide range of

platforms.

In order to make the first two themes possible, the Swift team needs to get things

right from the beginning with Swift 3. Unfortunately, this means that the new

changes in Swift 3 do not work well with previous releases of Swift. The Swift 3

release will fix and remove things that were awkward in Swift 2 (and its

predecessors). Swift 3 also re-imagines how it interacts with Cocoa and Objective-

C to make the APIs that bridge them feel more Swifty.

Swift is a really big deal to Apple and expectations from the language are high. Apple has

laid out its roadmap for how it expects to reach its goals. In fact, you can stay current with

all things Swift by subscribing to one of the mailing lists found here h t t p s : / / s w i f t . o r g / c o

m m u n i t y / # m a i l i n g - l i s t s. The main method for communicating with the Swift community

is via mailing lists. You can find mailing lists that cater to general information as well as

lists for day-to-day updates on the language. The Swift mailing lists can be a valuable tool

that you should not overlook.

In the next section, we will talk about what the open source community means for you as a

Swift developer.

Open source Swift

On December 3 2015, Apple open-sourced Swift (including the language, supporting

libraries, debugger, and package manager) under the Apache 2.0 license and launched the h

t t p s : / / S w i f t . o r g / website on the same day. h t t p s : / / S w i f t . o r g / is the official site to

find resources on the various projects that make up Swift. It's your main source to read

announcements on all of the development work on the language, from proposals of new

features, to links to development branches of Swift code that you can download and test.

What Were They Thinking?

[ 9 ]

h t t p s : / / S w i f t . o r g / is a website that you will want to bookmark for future reference. The

entire Swift codebase is hosted on GitHub and is available for anyone to access. Take a

second to think about that. Anyone can download Swift, play around with a binary, build a

project, or look under the hood to see how things actually work. For a company of Apple's

size and reputation, releasing Swift, the language that they are betting on to power all of

their applications, to the community is amazing and should not be taken lightly. This is

huge!

Naturally, Apple didn't just hand the language over and walk away. Instead, Apple set up

an internal team to shepherd the development process and to be responsible for the day-to-

day project management. The open sourced version of the Swift language is comprised of a

group of projects each hosted as a separate repository on GitHub. Today, you can find links

to six active projects:

Swift compiler: Command line tool

Standard library: Distributed as part of the core language

Core libraries: Provide a higher level functionality

LLDB debugger: Includes the Swift REPL

Swift Package manager: Building projects and distributing them

Each project has a dedicated section on h t t p s : / / S w i f t . o r g / that explains the project goals

and links on how to use both Swift and contribute as a community member. I encourage

you to review h t t p s : / / S w i f t . o r g / to get a better handle on all things Swift from Apple's

perspective. Before we end our section on where to find resources on Swift, I do want to

briefly discuss what it means to be a community contributor.

The community structure has been well thought out and it's designed to provide strong

leadership from members in the community. This structure will guide the on-going

development of the language and will hopefully ensure that as the community expands,

many new community contributors will have a voice that is heard and respected. See below

for the roles that make up members of the community:

Project Lead: Apple is the project lead and will select others from the community

to serve in various technical lead positions

Core Team: This small team of engineers is responsible for strategic direction

Code Owner: This title goes to anyone responsible for a specific area of a Swift

project codebase

Committer: This role is given to anyone with commit access to a Swift repository

Contributor: This role is reserved for anyone who contributes to a patch or helps

with a code review

剩余136页未读，继续阅读

ramissue

粉丝: 354
资源: 1487

Swift 3速成：掌握新功能与平台迁移指南

Swift.2.Cookbook.17858892

Learning.Swift.1784392502

Mastering.Swift.3.Linux.1786461412.epub

Swift.3.Object.Oriented.Programming.2nd.epub

Swift.3.Protocol-Oriented.Programming.2nd.Edition.epub

Mastering.Swift.2.1785886

Swift.by.Example.1785284703

Swift.High.Performance.1785282204

The.Swift.Developers.Cookbook.0134395263.epub

Swift.2.by.Example.1785882929

最新资源