Swift

Hello, World!

print("Hello, world!")
// Prints "Hello, world!"

상수 선언

let myConstant = 42

변수 선언 및 정의

var myVariable = 42
myVariable = 50

형지정

let explicitDouble: Double = 70

형변환

let label = "The width is "
let width = 94
let widthLabel = label + String(width)

문자열에 값 포함시키기

let apples = 3
let oranges = 5
let appleSummary = "I have \(apples) apples."
let fruitSummary = "I have \(apples + oranges) pieces of fruit."

여러줄 문자열 정의

let quotation = """
I said "I have \(apples) apples."
And then I said "I have \(apples + oranges) pieces of fruit."
"""

배열과 딕셔너리