Book Image

Swift Cookbook

Book Image

Swift Cookbook

Overview of this book

Table of Contents (18 chapters)
Swift Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Watching the temperature


When Xerox engineers created the Window system based on Smalltalk, they brought a big concept to the computer world—the idea of analog representation on digital devices (computer).

This means that for us, human beings, it is easier to understand how long a process will take watching a progress bar instead of watching a percentage on screen. Here, we will watch some colors instead of numbers.

In this recipe, we will watch the color of a temperature instead of watching its value; this way, you can have a better idea about the chill.

Getting ready

Open your Xcode and create a new playground called Chapter 6 Color, remove the str string, but leave the UIKit import as it is.

How to do it...

Follow these steps to create a playground that will watch the temperature:

  1. First of all, let's create an array with temperatures; in this case, the temperatures are measured in Celsius degrees:

    var temperatures = [15, 8, 3, -1, 2, 3, 3, 9, 14, 18, 23, 27, 30, 34, 20, 30, 35, 39, 41]
  2. The next...