변수(Mutable Type)

var str = "hello, playGround"


str = "Hello, World"


변수 선언 


var number = 7

 = > 가능



상수(Immutable Type)

let language = "Swift"


language = "Objective-c" 

 -> Cannot assign to value : "laungage' is a 'let' constant

에러

'공부 > iOS' 카테고리의 다른 글

Swift Numbers& Booleans 정수, 실수  (0) 2018.11.08
Swift Naming Convention  (0) 2018.11.08
iOS ) UIImage VS CGImage VS CIImage  (0) 2018.11.03

+ Recent posts