Typealias dalam Swift

Kamu akan mempelajari cara membuat nama palsu / alias untuk apa saja. Oke karena langsung saja buka Playground Kamu karena typealias cukup singkat.

Coba kita membuat alias untuk String.

typealias Name = String

func insertName(name: Name) {}
insertName(name: "Alif R")

class Employee {}

typealias MyEmployees = [Employee]
func listEmployees(enterEmployees: MyEmployees) {}

typealias GridPoint = (Int, Int)

func enterPoint(grid: GridPoint) {
	print("You've entered, \(grid.0) and \(grid.1)")
}

enterPoint(grid: (4, 2))

Coba kita tinjau bagaimana menginisialisasi Array, Dictionary, danOptional.

let arrayOne: Array<String> = ["Budi", "Asep"] // Generic Struct
let arrayTwo: [String] = ["Budi", "Asep"]

let dictTwo: Dictionary<String, Int> = ["Panjul": 28, "Isal": 26] // Generic Struct
let dictOne: [String: Int] = ["Panjul": 28, "Isal": 26]

var optionalOne: String?
var optionalTwo: Optional<String> // Generic Enum

Semoga bermanfaat.

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