check if all elements of an array have the same value in Swift

Question

Is there a function in Swift that checks whether all elements of an array have the same value? In my case, it\'s an array of type Int. I know I can iterate over

Answer 1

Soliution for Swift 4.2/Xcode 10:

let arr = [1, 1, 1, 1]
let allItemsEqual = arr.dropLast().allSatisfy { $0 == arr.last }
print(allItemsEqual)

If your current version of Xcode is prior to 10.0 you can find the function allSatisfy of ArraySlice in Xcode9to10Preparation. You can install this library with CocoaPods.