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Swift 4 Programming Cookbook

You're reading from Swift 4 Programming Cookbook 50 task-oriented recipes to maximise Swift 4 productivity

Product type Paperback

Published in Sep 2017

Publisher Packt

ISBN-13 9781786460899

Length 384 pages

Edition 1st Edition

Languages

Swift

Tools

iOS

Concepts

iOS Development

Author (1):

Keith Moon

View More author details

Table of Contents (15) Chapters

Title Page

Credits

About the Author

About the Reviewer

www.PacktPub.com

Customer Feedback

Preface

1. Swift Building Blocks FREE CHAPTER

2. Building on the Building Blocks

3. Data Wrangling with Swift Control Flow

4. Generics, Operators, and Nested Types

5. Beyond the Standard Library

6. Swift Playgrounds

7. Server-Side Swift

8. Performance and Responsiveness in Swift

Import Code into Playgrounds

As we have seen throughout this chapter, and this book, playgrounds are a great canvas for exploring APIs, frameworks, and custom code. However, if you want to explore uses for your own code, it appears that you need to include all the code in the playground and that can make it long and unwieldy.

It doesn't need to be that way. In this recipe, we will see how you can embed Swift code in your playground and make use of it from your playground code.

Getting ready

For this recipe, we will use the playground from the previous recipe, called EmbeddedResources.playground, which can be retrieved from the GitHub repository for this chapter at http://swiftbook.link/code/chapter6.

How to do it...

We will take the BarChart custom view and related code, and move it to a separate file embedded within the playground, leaving us free to use the playground to experiment with our custom view. Let's look at these steps:

If the playground's project navigator isn't visible, select View...

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