Основы языка Swift — Что такое Swift?

var implicitInteger = 70
var implicitDouble = 70.0
var explicitDouble: Double = 70

let speedOfLight = 299_792_458
let numberOfApples = 345
let fruitSummary = "I have \(numberOfApples + 5) pieces of fruit."

print("Hello, world")

let people = ["Anna": 67, "Beto": 8, "Jack": 33, "Sam": 25]
for (name, age) in people {
    print("\(name) is \(age) years old.")
}