How to get a random element from an array using randomElement()
Swift version: 5.0
Swift’s arrays, sets, and dictionaries have a randomElement() method that returns one random item from the collection. Because your collection might be empty, the return type will be optional and you’ll get back nil if the collection had nothing in it.
For example:
let numbers = [100, 80, 85]
if let winner = numbers.randomElement() {
print("The winning number is \(winner).")
}SPONSOR Tired of wasting time debugging your Swift app? Instabug’s SDK is here to help you minimize your debugging time by providing you with complete device details, network logs, and reproduction steps with every bug report. All data is attached automatically. It only takes a line of code to setup. Get started for free.
Available from iOS 8.0
Did this solution work for you? Please pass it on!
Other people are reading…
- How to find the maximum of two numbers
- What is the @objc attribute?
- Removing matching elements from a collection: removeAll(where:)
- How to split an integer into an array of its digits
- Tips for Android developers switching to Swift
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
