Get first element of array of pairs (Swift)

Question

I have this array:

let arrayOfPairs = [
    (8, 1),
    (6, 4),
    (2, 3),
]

I want this array:

let arrayOfSingleValues =          


        

Answer 1

You can use map to get just the first element of your tuple as follow:

let arrayOfPairs = [(8, 1), (6, 4), (2, 3)]
let arrayOfSingleValues = arrayOfPairs.map { $0.0 }

print(arrayOfSingleValues)   // [8, 6, 2]