Swift -- 方法
class Rect{
private struct swidth{
static var width: Int = 0
}
private struct sheight{
static var height: Int = 0
}
internal class var width: Int{
get{
return swidth.width
}
set{
swidth.width = newValue
}
}
internal class var height: Int{
get{
return sheight.height
}
set{
sheight.height = newValue
}
}
class func setSize(w: Int, height: Int){
Rect.width = w
Rect.height = height
}
class func getArea() -> Int{
return Rect.width * Rect.height
}
}
Rect.setSize(20, height: 50)
Rect.width
Rect.height
Rect.getArea()
// 闭包
class Student{
var score: [Int] = {
var scores: [Int] = Array()
for m in 0...3{
scores.append(m)
}
return scores
}()
}
var stu = Student()
stu.score
Student().score
// 嵌套类型
struct BlackjackCard{
enum Suit: String{
case Spades = "first", Hearts = "second", Diamonds = "third", Clubs = "fourth"
}
enum Rank: Int{
case Two = 2, Three, Four, Five, Six, Seven, Eight, Nine, Ten
case Jack, Queen, King, Ace
struct Values{
let first: Int, second: Int?
}
var values: Values{
switch self{
case .Ace: return Values(first: 1, second: 11)
case .Jack, .Queen, .King: return Values(first: 10, second: nil)
default: return Values(first: self.rawValue, second: nil)
}
}
}
let rank: Rank, suit: Suit
var description: String{
var output = "suit is \(suit.rawValue)"
output += " value is \(rank.values.first)"
if let second = rank.values.second{
output += " or \(second)"
}
return output
}
}
let theAceOfSpades = BlackjackCard(rank: .Ace, suit: .Spades)
theAceOfSpades.description
let heartsSymbol = BlackjackCard.Suit.Hearts.rawValue
