Which keyword do we use to make function arguments mutable in Swift?

What integer literal formats are supported in Swift?

Will an array, a set or a dictionary that a programmer declares be immutable ?

1: For yes 

0: For no 

2: It depends on the type of assigned storage type.

What will be the output of the following lines of code?

let greatBritishPoundSign = "£"

let price = greatBritishPoundSign + "5000."

print(price)

What will be the output of the following lines of code ?

struct Test {

var newVar : Int = 0{

 willSet {

  print(" \(newValue)")

 }

 }

}

var test = Test(newVar: 20)

test.newVar = 30

Which of the following features are exclusive to classes in Swift?

When are extensions used in Swift?

What will be the output of the following lines of code?

enum Beverage: CaseIterable {

case coffee, tea, juice

}

var string = ""

for beverage in Beverage.allCases {

string += String(beverage)

}

print(string)

What will be the output of the following lines of code ?

struct Test {

  var someVar : Int = 0

  var anotherVar : Int {

    get {

       return someVar

    }  

    set {

        someVar = newValue

    }

  }

}

var test = Test(someVar: 20)

let valueOfSomeVar = test.anotherVar; print(valueOfSomeVar)

What will be the output of the following lines of code ?

var array = [String]()

for i in 1...3 {

array.append("#String + \(i)#")

}

for i in array { 

print(i) 

} 

The options are : 

1. #String + 1#    

     #String + 2#

     #String + 3#

2. String + 1 String + 2 String +3

3. String + 1            

     String + 2

     String + 3

4. None of the above.