Scala抽象继承

所以，我想做的是使用traits创建一个抽象的继承模型。我认为示例代码效果最好，所以我创建了这个小展示来展示我的问题

trait Animals{
 val owned: Seq[Animal]
 type Animal <: TAnimal
 trait TAnimal {
  def name : String
 }
}

trait动物{
val拥有：Seq[动物]
输入Animal这被称为蛋糕图案。你不需要在Dog trait中写下所有的东西，你可以这样定义它：

trait Animals{
 type Animal <: TAnimal
 def owned: Seq[Animal]
 trait TAnimal {
  def name : String
 }
}

trait Dogs extends Animals{
 type Animal <: TDog
 trait TDog extends TAnimal {
  def identNo : Int
 }
}

现在，您可以将其混入：

scala> val dogs = new Dogs with ReservoirDogs {}
dogs: Dogs with ReservoirDogs = $anon$1@6f6f6727

scala> val dogs = new Animals with ReservoirDogs {}
dogs: Animals with ReservoirDogs = $anon$1@11c8ce34

这就是蛋糕图案的全部内容
谢谢，这真的很有帮助。到目前为止我还不知道蛋糕图案。顺便说一句，我真的很喜欢你的例子=）
trait ReservoirDogs extends Dogs {
  case class Animal(name: String, identNo: Int) extends TDog
  val owned = List(Animal("Pink", 1), Animal("Blue", 2))
}

scala> val dogs = new Dogs with ReservoirDogs {}
dogs: Dogs with ReservoirDogs = $anon$1@6f6f6727

scala> val dogs = new Animals with ReservoirDogs {}
dogs: Animals with ReservoirDogs = $anon$1@11c8ce34