You want to add a property to an existing type with an extension. Computed properties work, so why not stored properties?
An extension only adds code; it can't change the type's memory layout (instance size and field offsets), so stored properties are out.
SwiftMultiple choiceExpert
What does this code print? …
#extension
SwiftMultiple choiceBasics
Which statements about a lazy var stored property are correct? Pick all that apply.
#stored-property
SwiftMultiple choiceBasics
What happens when you compile this code? And if you change the same definition to class…
#memory-layout
SwiftShort answerBasics
In one file you have class A { fileprivate func secret() {} } and class B. Can B call…
#extension