Objective-C nullable properties will appear as __ properties when imported to Swift project.

Objective-C class can be instantiated in Swift class only through

After importing Objective-C code to Swift, the above method will be imported as (instancetype)initWithFrame:(CGRect)frame style:(UITableViewStyle)style;

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?

Which of the following are true about extension functionalities?

Instance methods can be _____ in extension

In what order will the following statements appear in the console? println('1') dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY _DEFAULT, 0), {println('2')}); println('3')

In what queue should all UI code be handled?

Which of the following is correct to cube Integer?

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

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