Struct VS Class

class 는 reference type
struct는 value type

퍼포먼스적으로 봤을때
데이터 모델로써만 사용할때는 Struct가 유리
기능이 많다고하면 Class가 유리
만들어지거나 사용되는시간 Struct가 유리

struct TestStruct {
    var name: String
    var age: Int

    init(name: String, age: Int) {
        self.name = name
        self.age = age
    }
}

class TestClass {
    var name: String
    var age: Int

    init(name: String, age: Int) {
        self.name = name
        self.age = age
    }
}

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        var testStruct: [TestStruct] = []
        var testClass: [TestClass] = []

        let startTime = CFAbsoluteTimeGetCurrent()

        for _ in 0 ..< 1000000 {
            testStruct.append(TestStruct.init(name: "aa", age: 0))
        }

        let durationTime = CFAbsoluteTimeGetCurrent() - startTime

        let startTime2 = CFAbsoluteTimeGetCurrent()

        for _ in 0 ..< 1000000 {
            testClass.append(TestClass.init(name: "aa", age: 0))
        }

        let durationTime2 = CFAbsoluteTimeGetCurrent() - startTime2

        print("durationTime Struct: \(durationTime)")
        // durationTime Struct: 2.40787949849894
        print("durationTime Class: \(durationTime2)")
        // durationTime Class: 3.40787949849894


    }
}