Swift version: 5.10
All arrays have a built-in method called max()
, which returns the highest item in the array. This comes with a default implementation if the elements of the array conform to Comparable
: it will simply compare all items until it finds the one that compares highest.
For example, this code puts 5 into the max
constant:
let numbers = [1, 2, 3, 4, 5]
let max = numbers.max()
Note: because max()
can be called on an empty array, it returns an optional – you need to check and unwrap it yourself.
SAVE 50% All our books and bundles are half price for Black Friday, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.
Available from iOS 8.0 – learn more in my book Pro Swift
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.