Your First iOS & SwiftUI App: An App from Scratch

Feb 13 2023 Swift 5.7, iOS 16, Xcode 14

Part 3: Coding in Swift

28. Type Inference

Episode complete

Play next episode

About this episode
See versions
Leave a rating/review
See forum comments
Cinema mode Mark complete Download course materials
Previous episode: 27. Variables & Constants Next episode: 29. Conclusion

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

Take your career further with a Kodeco Pro subscription. 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.

This video Type Inference was last updated on Feb 13 2023

Heads up... You've reached locked video content where the transcript will be shown as obfuscated text.

We’ve now reduced our points(sliderValue:) method to just a few lines of code.

  let difference = abs(target - sliderValue)
  let awardedPoints = 100 - difference
var target = Int.random(in: 1...100)
var score = 0
var round = 1


Let’s go to ContentView.swift, and we can clean up some of these as well.

@State private var alertIsVisible = false
@State private var sliderValue = 50.0
@State private var game = Game()
let roundedValue = Int(sliderValue.rounded())
return 100 - difference
return 100 - abs(target - sliderValue)
100 - abs(target - sliderValue)