Chained Property Observers

chained_observers

struct Person {
    var firstName: String = "" {
        willSet {
            println("Changing firstname from \(firstName) to \(newValue)")
        }
    }
}

struct Family {
    var parent: Person = Person() {
        willSet {
            println("Changing the parent from \(parent.firstName) to \(newValue.firstName)")
        }
    }

    var child: Person = Person() {
        willSet {
            println("Changing the child from \(child.firstName) to \(newValue.firstName)")
        }
    }
}

var family: Family = Family() {
    willSet {
        println("Changing family")
    }
}

family.parent.firstName = "Chris"
family.parent.firstName = "Joe"

I'm not even sure why I have this open, but is it meant to just continually crash playground? :P