Please check following code and tell what can be problem? import UIKitvarintVar:Int?=3 intVar = nil varstrVar:StringstrVar = nil

Closures capture ____ reference of objects by default

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?

What is the result of the following code? func potteryBarn (name: String, score: Int) -> String { return 'Hello (name)! Your score is (score).' } potteryBarn ('Tom' , 2)

When declaring a function, what symbol is used to indicate that an internal parameter name should also be used as an external parameter?

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?