Compare 2 arrays and list the differences - Swift

Question

I was wondering how one would go about comparing 2 boolean arrays and listing the non matching booleans.

I have written up a simple example of 2 arrays.

Answer 1

Xcode 11 has it supported

https://developer.apple.com/documentation/swift/array/3200716-difference

let oldNames = ["a", "b", "c", "d"]

let newNames = ["a", "b", "d", "e"]

let difference = newNames.difference(from: oldNames)

for change in difference {
  switch change {
  case let .remove(offset, oldElement, _):
    print("remove:", offset, oldElement)
  case let .insert(offset, newElement, _):
    print("insert:", offset, newElement)
  }
}

Output

remove: 2 c
insert: 3 e