Programming in Swift: Functions & Types

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

Part 2: Closures

13. Challenge: Closure Syntax

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: 12. Closure Syntax Next episode: 14. forEach & map

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.

Notes: 13. Challenge: Closure Syntax

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

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

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

It is challenge time again! You’ll find it on page 5 of the Playground for this part of the course. Pause the video, practice writing closures a few different ways, and then come back to check your work!

let copyLines😺_2🛑 =

let copyLines_2😺: (String, Int) -> Void🛑 = 

let copyLines_2: (String, Int) -> Void = { (offense❌: String❌, repeatCount❌: Int❌) -> Void in

 = { ❌(❌offense, repeatCount❌)❌ -> Void in

let copyLines_3:

 = { offense, repeatCount❌ -> Void❌ in

let copyLines_4: 

= { ❌offense, repeatCount❌ in

  print( String(repeating: "I must not \(😺$0).", count: 😺$1) )

copyLines("tell lies", 5)
copyLines_2("tell lies", 5)
copyLines_3("tell lies", 5)
copyLines_4("tell lies", 5)