https://www.runoob.com/scala/scala-maps.html
https://docs.scala-lang.org/zh-cn/overviews/collections/seqs.html
https://docs.scala-lang.org/zh-cn/cheatsheets/index.html
https://juejin.im/post/5d859398f265da03b9502f4c
发布时间：2020年03月17日 阅读：213 次
https://www.runoob.com/scala/scala-maps.html
https://docs.scala-lang.org/zh-cn/overviews/collections/seqs.html
https://docs.scala-lang.org/zh-cn/cheatsheets/index.html
https://juejin.im/post/5d859398f265da03b9502f4c