Listing 7 also demonstrates how you can nest return statements to precisely control the result set generated by the query.
清单7还显示了如何嵌套return语句，以精确地控制查询生成的结果集。
Have you ever tried to troubleshoot some code that has return statements thrown around all over the method?
你是否曾试图修改过一些在方法里到处都是返回语句的程序代码？
Return statements are optional in Scala.
返回语句在Scala中是可选的。
Return statements are optional in Scala.
返回语句在Scala中是可选的。
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