Редко используемые конструкции if

[administrator]

let a = 1
if 0 ... 3 ~= a {
  print("\"a\" matches interval from 0 to 3")
}
// "a" matches interval from 0 to 3

let b = 4
if case 3 ... 5 = b {
  print("\"b\" matches interval from 3 to 5")
}

// "b" matches interval from 3 to 5