iOS二次發育（swift）類

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類的初探

class Person{    var firstName: String    var lastName: String    init(firstName:String, lastName:String) {        self.firstName = firstName        self.lastName = lastName    }    func out() -> String {        return self.firstName + self.lastName    }    func goEast() {        self.firstName += "aaa"    }}let person = Person(firstName: "1", lastName: "2")person.out()person.firstName = "3";let person2 = personperson2.goEast()person2.out()person === person2/*引用同一塊地址*/struct Location{    var x = 0.0    var y = 0.0    func out() -> Float {        return Float(x + y);    }    }//實值型別 方法改變自身，需聲明關鍵字mutating//結構體struct Location2{    var x = 0    var y = 0    mutating func goEast() {        self.x += 1    }}//枚舉enum Switch{    case On    case Off    mutating func click() {        switch self {        case .On:            self = .Off        case .Off:            self = .On        }    }}var button = Switch.Offbutton.click()

 

iOS二次發育（swift）類