Scala笔记:类

object test21 {

  class SwingType{
    def wantlearned(sw:String): Unit ={
      println("兔子学会"+sw)
    }
  }
  object swimming{
    implicit def  learningType(s:AnimalType)=new SwingType
  }
  class AnimalType
  object AnimalType extends App{
    import swimming._
    val rabbit = new AnimalType
    rabbit.wantlearned("吃苹果")
  }



  def main(args: Array[String]): Unit = {
    val ss= SparkSession.builder().master("local[2]").appName("hello").getOrCreate()
    val sc=ss.sparkContext
    ss.sparkContext.setLogLevel("ERROR")

    class Person[T](var name:T)
    class Student[T,S](name:T,var age: S) extends Person(name)
    println(new Student[String,Int]("你好",12).name)


    implicit def double2Int(x:Double)=x.toInt
    val x:Int=3.5


    def foo(msg:String): Unit ={
      println(msg)
    }

    implicit def intToString(x : Int) = x.toString
    foo(10)





  }


}