Which of the following is a valid attribute in Swift?

What clause can be used to apply protocols to generic types in Swift?

Which of the following is not a valid HTML type attribute?

What data types are commonly used in Swift to represent barcodes?

What are the two types of unowned references in Swift?

Where can you access a property that is declared as internal?

What is the correct syntax for a convenience initializer in Swift?

Which of the following is allowed in Swift?

What is the order of elements stored in a set?

When the object of a subclass gets destructed in Swift, the deinitializer of the superclass is called. What is the reason behind this behavior?