How to swap two items in an array using swapAt()
Swift version: 5.6
If you need to have two items in an array change places, the swapAt() method is exactly what you want: provide it two indexes inside your array, and the items at those positions will be swapped.
For example, consider this array:
var names = ["Paul", "John", "George", "Ringo"]If I wanted John and Paul to swap places, I’d swap positions 0 and 1, like this:
names.swapAt(0, 1)Note: swapAt() will trigger a fatal error if you try to swap beyond the length of the array.
SPONSORED Play is the first native iOS design tool created for designers and engineers. You can install Play for iOS and iPad today and sign up to check out the Beta of our macOS app with SwiftUI code export. We're also hiring engineers!
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 8.0
Similar solutions…
- How to create multi-column lists using Table
- How to add drag and drop to your app
- How to use the zip() function to join two arrays
- Two-way bindings in SwiftUI
- How to use @MainActor to run code on the main queue
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
