安装并 hello world
- https://docs.scala-lang.org/getting-started/sbt-track/getting-started-with-scala-and-sbt-on-the-command-line.html
- https://towardsdatascience.com/an-intro-to-scala-part-1-installation-set-up-and-hello-world-58a076a6818e
- https://www.scala-sbt.org/1.x/docs/sbt-by-example.html
- https://github.com/hjhuney/An-Intro-to-Scala
Scala 正则表达式提取成变量 https://alvinalexander.com/scala/how-to-extract-parts-strings-match-regular-expression-regex-scala/