Book Image

Swift 4 Programming Cookbook

Book Image

Swift 4 Programming Cookbook

Overview of this book

Swift 4 is an exciting, multi-platform, general-purpose programming language. Being open source, modern and easy to use has made Swift one of the fastest growing programming languages. If you interested in exploring it, then this book is what you need. The book begins with an introduction to the basic building blocks of Swift 4, its syntax and the functionalities of Swift constructs. Then, introduces you to Apple's Xcode 9 IDE and Swift Playgrounds, which provide an ideal platform to write, execute, and debug the codes thus initiating your development process. Next, you'll learn to bundle variables into tuples, set order to your data with an array, store key-value pairs with dictionaries and you'll learn how to use the property observers. Later, explore the decision-making and control structures in Swift and learn how to handle errors in Swift 4. Then you'll, examine the advanced features of Swift, generics and operators, and then explore the functionalities outside of the standard library, provided by frameworks such as Foundation and UIKit. Also, you'll explore advanced features of Swift Playgrounds. At the end of the book, you'll learn server-side programming aspect of Swift 4 and see how to run Swift on Linux and then investigate Vapor, one of the most popular server-side frameworks for Swift.
Table of Contents (9 chapters)

Multi-Page Playgrounds

We've often discussed how playgrounds can be a great tool for exploring APIs and experimenting with UI; however, playgrounds can also be used for documenting APIs, and providing rich and linkable content. Swift playgrounds provide support for rich text formatting in comments and multiple pages of content, and we will explore these features in this recipe.

Getting ready

In this recipe, we will start with the playground we used in the last recipe, which displayed our custom BarChart view. You can get the playground, called EmbeddedSources.playground, from the GitHub repository for this chapter, at http://swiftbook.link/code/chapter6.

We will use our BarChart view to display the price in US Dollars...