Scala进阶：编程跳出循环的三种方法

package com.unicom.ljs.learning
/**
  * @author: Created By lujisen
  * @company ChinaUnicom Software JiNan
  * @date: 2020-02-01 22:15
  * @version: v1.0
  * @description: com.unicom.ljs.learning
  */
object IteratorTest {
  def main(args: Array[String]): Unit = {
    
    var flag = true
    var count = 0
    var n = 0
    
    while(flag) {
      count += n
      n += 2
      println("count = "+ count)
      println("n = "+ n)
      if (n == 8) {
        flag = false
      }
    }
  }
}

package com.unicom.ljs.learning

/**
  * @author: Created By lujisen
  * @company ChinaUnicom Software JiNan
  * @date: 2020-02-01 22:15
  * @version: v1.0
  * @description: com.unicom.ljs.learning
  */
object IteratorTest {
  def main(args: Array[String]): Unit = {
    println(func1())
  }

  def func1()={
    var result=0
    def func2(): Any ={
      for(i<-0  until 5){
        result+=i
        /*跳出函数func2*/
        if(i==3){
          return
        }
      }
      result
    }
    /*调用函数func2*/
    func2()
    result
  }
}

package com.unicom.ljs.learning

/**
  * @author: Created By lujisen
  * @company ChinaUnicom Software JiNan
  * @date: 2020-02-01 22:15
  * @version: v1.0
  * @description: com.unicom.ljs.learning
  */
import scala.util.control.Breaks._
object IteratorTest {
  def main(args: Array[String]): Unit = {
    var result = 0
    /*通过break跳出breakable代码块*/
    breakable {
      for (i <- 0 until 8) {
        if (i == 5) {
          break
        }
        result += i
      }
    }
    println("result = " + result)
  }