Preferred way to initialize a class in Swift - class

Question

In learning Swift, there seems to be two approaches to initializing a class instance:
// Approach A
class Person {
let first: String = "bob"
let last: String = "barker"
}
let worker = Person()
worker.first
worker.last
// Approach B
class Person2 {
let first2: String
let last2: String
init() {
self.first2 = "bill"
self.last2 = "williams"
}
}
let dealer = Person2()
dealer.first2
dealer.last2
Is there any reason why I would use one approach instead of the other?

Answer 1

“If a property always takes the same initial value, provide a default value rather than setting a value within an initializer. The end result is the same, but the default value ties the property’s initialization more closely to its declaration. It makes for shorter, clearer initializers and enables you to infer the type of the property from its default value. The default value also makes it easier for you to take advantage of default initializers and initializer inheritance, as described later in this chapter.”
Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itun.es/us/jEUH0.l

Answer 2

I use the first version when I have a known default value that I am putting into the variable. I use the second for anything that could change based on what I pass into the init.
So my preferred version of the above would be:
// Approach A
class Person {
let first: String = "bob"
let last: String = "barker"
}
let worker = Person()
worker.first
worker.last
// Approach B
class Person2 {
let first2: String
let last2: String
init(first2: String, last2: String) {
self.first2 = first2
self.last2 = last2
}
}
let dealer = Person2(first2: "bill", last2: "williams")
dealer.first2
dealer.last2