Sorting a String array and ignoring case

Question

The code below works for sorting an array of strings if they are all lowercase or all uppercase but I want to ignore case when I sort. How could I do this? The following is

Answer 1

var items = ["a","A","b","B","c","C","d","D"] 
items = items.sorted(by: { (item1, item2) -> Bool in
     return item1.localizedCompare(item2) == .orderedAscending
})