Programming in Swift: Functions & Types

Jan 4 2022 · Swift 5.5, iOS 15, Xcode 13

Part 4: Properties & Methods

32. Challenge: Properties

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Previous episode: 31. Lazy Properties Next episode: 33. Methods

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Notes: 32. Challenge: Properties

Update Notes: This course was originally recorded in 2019. It has been reviewed and all content and materials updated as of October 2021.

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It’s time for some practice with properties. Again, everything you need is in the playground for this part of the course. Pause the video, and write some code to complete the exercises. Then, keep watching to compare your code with my solutions. Time to pause the video; have at it!

struct Temperature {
  var degreesF: Double
  var degreesC: Double
38 var degreesF: Double

  var degreesC: Double {
    get { return (degreesF - 32) / 1.8 }
42 set { degreesF = newValue * 1.8 + 32 }
46 var temperature = Temperature(degreesF: 32)
39     didSet {
      if degreesF > 100 {
41 print("It's \(degreesF) degrees Fahrenheit! I had fun coding in Swift with you before I melted.")
temperature.degreesC😺 = 75
func monthsUntilJingleBells(from month: Month) -> Int {
  Month.december.rawValue - month.rawValue
😺var🛑 monthsUntilJingleBells(from month: Month) -> Int {
var monthsUntilJingleBells😺: 🛑Int {
Month.december.rawValue - ❌month.❌rawValue
  😺var season: Season🛑 {
    switch 😺self🛑 {