Scala break 和 continue

break 和 continue

• In the scala, like Java and C ++ break / continue keyword is removed
• If you must use break / continue, we need to use the class scala.util.control Break packages breableand breakmethods.

Achieve break

• Import Breaks packageimport scala.util.control.Breaks._
• The expression for use breakable wrap
• for expressions where needed to exit the loop, add the break()method call

The sample code

//使用for表达式打印1-100的数字，如果数字到达50，退出for表达式

// 导入scala.util.control包下的Break
import scala.util.control.Breaks._

breakable{
    for(i <- 1 to 100) {
        if(i >= 50) break()
        else println(i)
    }
}

Continue to achieve

continue with the implementation of similar break
with one difference:实现break是用breakable{}将整个for表达式包起来，而实现continue是用breakable{}将for表达式的循环体包含起来就可以了

The sample code

//打印1-100的数字，使用for表达式来遍历，如果数字能整除10，不打印
// 导入scala.util.control包下的Break    
import scala.util.control.Breaks._

for(i <- 1 to 100 ) {
    breakable{
        if(i % 10 == 0) break()
        else println(i)
    }
}