scala 基础到高阶

package com.ghc.bigdata
import org.apache.spark.{SparkConf,SparkContext}
/**
  * Created by Yu Li on 12/6/2017.
  */
object SparkScalaApp {
  def main(args:Array[String]):Unit={
    val sparkConf:SparkConf=new SparkConf()
    sparkConf.setAppName("Spark Scala App")
    sparkConf.setMaster("local[2]")
    val sc:SparkContext=new SparkContext(sparkConf)
    println("2 在List中的位置: "+getPosition(List(1,2,3),2))
    for(i<- map[Int,String](List(1,2,3),{num:Int=>num+"2"})){
      println(i)
    }
  }
  def getPosition[A](l:List[A],v:A): Int ={
    l.indexOf(v)
  }
  def map[A,B](list:List[A],func: A=>B)=list.map(func)

}