我想了解蛋糕模式。 我在閱讀this的博客。 從博客的示例代碼: case class User (name:String,email:String,supervisorId:Int,firstName:String,lastName:String)
trait UserRepository {
def get(id: Int): User
def find(usernam
我試圖找出通過蛋糕模式混合特質和通過老式延伸混合它們之間的區別是什麼。這裏是我的兩個例子: 威盛蛋糕 trait N {
def foo()
}
trait M {
this: N =>
def bar()
}
class U extends M with N {
def bar() =()
def foo() =()
}
什麼蛋
我想實現像代碼蛋糕的圖案,但我得到: Error:(47, 36) illegal inheritance;
self-type app.server.im.Im_Api_Service_Impl.type does not conform to app.server.im.Persistence[app.server.im.State.State]'s selftype app.server.
我讀過一些關於Scala的蛋糕模式的文章,基本理解它。以下是我從這篇文章複製了一些示例代碼: 組件: case class User(username:String, password: String)
trait UserRepositoryComponent {
val userRepository: UserRepository
class UserReposito
我有下面的類層次結構: abstract class Event(val timeStamp:Long,val id:Long)
case class StudentEvent(override val timeStamp:Long, override val id:Long,
firstName:String,lastName:String) extends Event(t