In the below text, what is the class name? Class Square: NamedShape { var sideLength: Double func area() -> Double { return sideLength*sideLength } }

In the below text, what is the name of the class’s only method? Class Square: NamedShape { var sideLength: Double func area() -> Double { return sideLength*sideLength } }

What aspect of iOS development requires the use of NSOperation and/or Grand Central Dispatch (GCD)?

Which of following expressions can be used to rewrite the following UITableView instantiation in Swift UITableView *myTableView = [[UITableView alloc] initWithFrame: CGRectZero style: UITableViewStyleGrouped];

What will happen if you assign a value to a property within its own didSet observer?

Which of the following is correct to cube Integer?

Which is true about the Dictionary?

Extension can be used to create a new nested type of the following:

Instance methods can be _____ in extension

Which of the following are true about extension functionalities?

extension Int { subscript(var myInt: Int) -> Int { var no1 = 1 while myInt > 0 { no1 *= 10 --myInt } return (self / no1) % 10 } } print(12[0]) What is the output?