Swift version: 5.4
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:
swapAt() will trigger a fatal error if you try to swap beyond the length of the array.
SPONSORED From August 2nd to 8th you can join a FREE crash course for mid/senior iOS devs who want to achieve an expert level of technical and practical skills – it’s the fast track to being a complete senior developer!
Available from iOS 8.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.