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Swift Essentials

By : Alex Blewitt, Bandlem Limited

4.8 (4)

Swift Essentials

4.8 (4)

By: Alex Blewitt, Bandlem Limited

Overview of this book

Whether you are a seasoned Objective-C developer or new to the Xcode platform, Swift Essentials will provide you with all you need to know to get started with the language. Prior experience with iOS development is not necessary, but will be helpful to get the most out of the book.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Trademarks

Conventions

Reader feedback

Customer support

Free Chapter

1. Exploring Swift

1. Exploring Swift

Getting started with Swift

Conditional logic

Iteration

Functions

Command-line Swift

Summary

2. Playing with Swift

2. Playing with Swift

Getting started with playgrounds

Displaying objects with QuickLook

Advanced techniques

Playgrounds and documentation

Limitations of playgrounds

Summary

3. Creating an iOS Swift App

3. Creating an iOS Swift App

Understanding iOS applications

Creating a single view iOS application

Swift classes, protocols, and enums

Creating a master-detail iOS application

Summary

4. Storyboard Applications with Swift and iOS

4. Storyboard Applications with Swift and iOS

Storyboards, scenes, and segues

Adding a navigation controller

Swift and storyboards

Using Auto Layout

Summary

5. Creating Custom Views in Swift

5. Creating Custom Views in Swift

An overview of UIView

Creating new views with interface builder

Creating views by subclassing UIView

Custom graphics with drawRect

Custom graphics with layers

Summary

6. Parsing Networked Data

6. Parsing Networked Data

Loading data from URLs

Parsing JSON

Parsing XML

Direct network connections

Summary

7. Building a Repository Browser

7. Building a Repository Browser

An overview of the GitHub API

The RepositoryBrowser project

Creating the client

Accessing repositories from view controllers

Summary

A. Appendix

A. Appendix

Language

Twitter users

Blogs and tutorial sites

Meetups

Afterword

Index

Index

Customer Reviews

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Summary

This chapter presented playgrounds, an innovative way of running Swift code with graphical representations of values and introspection of running code. Both expressions and the timeline were presented as a way of showing the state of the program at any time, as well as graphically inspecting objects using QuickLook. The XCPlayground framework can also be used to record specific values and allow asynchronous code to be executed.

Being able to mix code and documentation into the same playground is also a great way of showing what functions exist, and how to create self-documenting playgrounds was presented. In addition, tools for the creation of such playgrounds using either AsciiDoc or Markdown (CommonMark) were introduced.

The next chapter will look at how to create an iOS application with Swift.

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