本篇文章为大家展示了Scala中编程跳出循环的三种方法分别是什么，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
基于boolean类型的控制变量
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 } } }}
2.嵌套函数使用return
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 }}
3.使用break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 */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) }
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