ios - Swift 类基本 D.R.Y 原则

Question

拥有一个名为 Nike 的类并创建该类的实例是我认为应该避免代码重复的做法。这是最聪明的方法吗？

enum Condition {
    case poor
    case fair
    case excellent
}

class Shoe {

var color: Condition
var laces: Condition

init(color: Condition, laces: Condition) {
    self.color = color
    self.laces = laces
}

}

class Nikeone: Shoe {

var texture: Condition
var sole: Condition

 init(color: Condition, laces: Condition, texture: Condition, sole: Condition) {
  self.texture = texture
  self.sole = sole
super.init(color: color, laces: laces)
 }
}




class NikeTwo: Shoe {

var texture: Condition
var sole: Condition

init(color: Condition, laces: Condition, texture: Condition, sole: Condition) {
    self.texture = texture
    self.sole = sole
    super.init(color: color, laces: laces)
}

 }

class NikeThree: Shoe {

var texture: Condition
var sole: Condition

init(color: Condition, laces: Condition, texture: Condition, sole: Condition) {
    self.texture = texture
    self.sole = sole
    super.init(color: color, laces: laces)
}
}

拥有一个名为 Nike 的类并创建该类的实例是我认为应该避免代码重复的做法。这是最聪明的方法吗？

Answer 1

您最好的方法是按照您的建议创建一个名为 Shoe 的基类。

enum Condition {
    case poor
    case fair
    case excellent
}

class Shoe {
    var color: Condition
    var laces: Condition

    init(color: Condition, laces: Condition) {
        self.color = color
        self.laces = laces
    }
}

然后您将创建一个名为 NikeShoe 的子类:

class NikeShoe: Shoe {
    var texture: Condition
    var sole: Condition

    init(color: Condition, laces: Condition, texture: Condition, sole: Condition) {
        self.texture = texture
        self.sole = sole
        super.init(color: color, laces: laces)
    }
}

然后您将制作您想要的鞋子:

let shoeA = NikeShoe(…)
let shoeB = NikeShoe(…)