Using Type property, a class, enum, and structure can make Value in itself.

TypePropertyAndMethod.swift

struct Greet {

    let string: String
    static let words = ["Nice", "to", "meet", "see", "you."] // Type property
    static var first = true // Type property

    init(name: String) {

        // Refer type property and method from initializer
        string = Greet.first ? Greet.first(name) : Greet.usual()
    }

    // Type method
    static func first(name: String) -> String {
        let greet = words.filter { $0 != "see" }
        return "I'm \(name). " + greet.joinWithSeparator(" ")
    }

    // Type method
    static func usual() -> String {
        let greet = words.filter { $0 != "meet" }
        return greet.joinWithSeparator(" ")
    }
}

let firstGreet = Greet(name: "Keith")
print(firstGreet.string) // I'm Keith. Nice to meet you.

Greet.first = false
let secondGreet = Greet(name: "Keith")
print(secondGreet.string) // Nice to see you.