What is the keyword used to define subscripts in Swift?

A protocol in Swift can extend itself.

What is the name of the argument Swift uses in computed properties by default for a setter?

What is the correct way to declare and define required initializers in Swift?

What is the mechanism that handles instance memory management in Swift?

Which of the following is a valid rule for initializers in Swift?

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

class Test {

var x: Int = 0

func printSomething() {

x += 1

}

}

var test = Test()

test.printSomething()

print(test.x)

What will be the output of the following code?

let hours = 12

let hourInterval = 3

var ticks = [Int]()

for tickMark in stride(from: 3, through: hours, by: hourInterval) {

 ticks.append(tickMark)

}

print(ticks)

To declare property wrappers in Swift, we need to use a certain keyword. Where do we place this keyword in the statement to successfully declare a property wrapper?

What will be the output of the following code?

struct SomeStruct {

var someArr = [1, 2, 3, 4]

subscript(i: Int) -> Int {

get {

return someArr[i]

}

set {

someArr[i] = newValue

}

}

}

var someIns = SomeStruct()

someIns[3] = 5

print(someIns.someArr)