scala匿名函数

package com.ming.test
import scala.math._


object AnonymousFunc {
  
  
  def valueAtOneQuarter(f:(Double)=>Double)=f(0.25)
  
  def mulby(factor:Double)=(x:Double,y:Double)=>factor*x*y
  
  def main(args: Array[String]): Unit = {
    
    var a=Array(3.14,2,3).map { (x:Double) => 3*x }
    for(i<-a)println(i)
    var b=valueAtOneQuarter(ceil _)
    println(b)
    
    var c=mulby(4)
    var d=c(4,5)
    println(d)
  
     //高阶函数的使用，打印一个三角形
    (1 to 9).map("*" * _).foreach {println }
    
    (1 to 9).filter(_ % 2==0).foreach { println}
    
    //对字符串进行排序哦
    "mdasfsda,sdafdsaf,saf,哈哈发生大幅".split(",").sortWith(_.length>_.length).foreach { println }
    
    
   
    aa()
    
  }
  
  //控制抽象
  def until(condition: => Boolean)(block: =>Unit){
    if(!condition){
      block
      until(condition)(block)
    }
  }
  
  def aa()={
    var x=10
    until (x==0){
      x-=1
      println(x)
    }
  }
  
}