What is a mutating instance method in Swift?
Correct Answer: When instance method without extension can modify itself.
Explanation:
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More Swift MCQ Questions
Which keyword do you use to define a class?
Which is not a control transfer statement in Swift?
What is the correct way to compare the equality of two String type objects in Swift?
What is the super class name? class Square: NamedShape { var sideLength: Double func area() -> Double { return sideLength * sideLength } }
what is the property name? class Square: NamedShape { var sideLength: Double func area() -> Double { return sideLength * sideLength } }
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=[];
Extensions can add new instance ____?
Output when the file doesn’t exist? import UIKit let filename:String = 'testfile'; var readdata:String = 'test data';
How to convert string into integer value? import UIKit let str_number = '320'
Choose the correct answer? import Foundation import AVFoundation func startCapture()