Scala隐式转换

object ScalaDemo {

  implicit val str : String = "刘明"

  def main(args: Array[String]): Unit = {
    //匹配隐式值时，不加括号
    show
  }

  def show(implicit name:String)={
    print("name: " + name)
  }
  
}

object ScalaDemo {

  def main(args: Array[String]): Unit = {
    val aa = new AA
    aa.methodAA()
    //创建了AA，经隐式方法转换，能调用BB里的方法
    aa.methodBB()
  }

  implicit def AB(a:AA):BB={
    new BB
  }
  
}

class AA {
  def methodAA(): Unit ={
    println("methodAA...")
  }
}

class BB {
  def methodBB(): Unit ={
    println("methodBB...")
  }
}

object ScalaDemo {
  
  def main(args: Array[String]): Unit = {
    val aa = new AA
    aa.methodAA()
    //创建了AA，经隐式类的主构造器转换，能调用BB里的所有方法
    aa.methodBB()
    aa.methodBB2()
  }

  implicit class BB(aa: AA) {

    def methodBB(): Unit ={
      println("methodBB...")
    }
    
    def methodBB2(): Unit ={
      println("methodBB2...")
    }
  }

}

class AA {
  def methodAA(): Unit ={
    println("methodAA...")
  }
}