Following code which is super class? class X: Y { let str:String let val:Int? … init() { … } deinit(){ … } }

Choose the correct answer? import Foundation import AVFoundation func startCapture()

How to convert string into integer value? import UIKit let str_number = '320'

Output when the file doesn’t exist? import UIKit let filename:String = 'testfile'; var readdata:String = 'test data';

Extensions can add new instance ____?

Output? import UIKit var str1:String?='text1'; var str2:String='text2'; var int1:Int?=111; var int2:Int=222; var array:String[] = [str1, str2, int1, int2]; array=[];

what is the property name? class Square: NamedShape { var sideLength: Double func area() -> Double { return sideLength * sideLength } }

What is the super class name? class Square: NamedShape { var sideLength: Double func area() -> Double { return sideLength * sideLength } }

What is the correct way to compare the equality of two String type objects in Swift?

Which is not a control transfer statement in Swift?

Which keyword do you use to define a class?