Your First iOS & SwiftUI App: An App from Scratch

Feb 13 2023 · Swift 5.7, iOS 16, Xcode 14

Part 3: Coding in Swift

27. Variables & Constants

Episode complete

Play next episode

Next
About this episode

Leave a rating/review

See forum comments
Cinema mode Mark complete Download course materials
Previous episode: 26. Challenge: Calculate the Difference Next episode: 28. Type Inference

Get immediate access to this and 4,000+ other videos and books.

Take your career further with a Kodeco Personal Plan. With unlimited access to over 40+ books and 4,000+ professional videos in a single subscription, it's simply the best investment you can make in your development career.

Learn more Already a subscriber? Sign in.

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

At this point, you’ve simplified your algorithm to calculate the difference down a few lines of code.

var difference: Int = abs(target - sliderValue)
let awardedPoints: Int = 100 - difference
let awardedPoints: Int = 100 - difference
let roundedValue: Int = Int(sliderValue.rounded())
let guess = game.target + 5
let score = game.points(sliderValue: guess)