Swift - How to get indexes of filtered items of array

Question

let items: [String] = [\"A\", \"B\", \"A\", \"C\", \"A\", \"D\"]

items.whatFunction(\"A\") // -> [0, 2, 4]
items.whatFunction(\"B\") // -> [1]

Answer 1

you can use it like that :

 let items: [String] = ["A", "B", "A", "C", "A", "D"]

        let indexes = items.enumerated().filter {
            $0.element == "A"
            }.map{$0.offset}

        print(indexes)