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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

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Product type Paperback
Published in Sep 2017
Publisher Packt
ISBN-13 9781786460899
Length 384 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Keith Moon Keith Moon
Author Profile Icon Keith Moon
Keith Moon
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Toc

Table of Contents (9) Chapters Close

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

Making decisions with if/else

The if/else statement is a cornerstone of almost every programming language. It enables code to be executed conditionally, based on the outcome of a Boolean statement.

Getting ready

If you have ever played pool, you'll know that the aim of the game (when playing standard 8-ball pool) is to pot all the balls of one type and then to pot the black ball. When using American pool balls, they are numbered 1-15, and have a different pattern depending on their type. Balls 1-7 have a solid color, balls 9-15 are white with a colored stripe around them, and ball 8 is black.

Let's write a function that will take the number on the pool ball and return to us the type of ball it is.

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