Computed read-only property vs function in Swift

Question

In the Introduction to Swift WWDC session, a read-only property description is demonstrated:

class Vehicle {
    var numberOfWheels = 0
    var          


        

Answer 1

Since the runtime is the same, this question applies to Objective-C as well. I'd say, with properties you get

• a possibility of adding a setter in a subclass, making the property readwrite
• an ability to use KVO/didSet for change notifications
• more generally, you can pass property to methods that expect key paths, e.g. fetch request sorting

As for something specific to Swift, the only example I have is that you can use @lazy for a property.