网站介绍:文章浏览阅读1.2w次,点赞3次,收藏4次。问题:在Scala编程开发中, 经常会出现类似如下的错误,Error:(24, 29) value foreach is not a member of java.util.Set[String] for (key ^或Error:(21, 22) value filter is not a member of _value foreach is not a member of java.util.set
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