scala原始字符串:每行开头的额外选项卡

这个问题是由于您在解释器中使用了多行原始字符串。您可以看到,额外空间的宽度正好是 scala> 创建新行时由解释器添加的提示或管道+空间的大小,以使内容保持一致。

scala> val rawString = """here is some text          // new line
     | and now im on the next line                   // scala adds spaces 
     | and this is the thrid line, and we're done""" // to line things up
// note that the comments would be included in a raw string...
// they are here just to explain what happens

rawString: java.lang.String =
here is some text
       and now im on the next line
       and this is the thrid line, and we're done

// you can see that the string produced by the interpreter
// is aligned with the previous spacing, but without the pipe

如果用scala脚本编写代码并以 scala filename.scala 你没有得到额外的标签。

或者,您可以在解释器中使用以下构造:

val rawString = """|here is some text
                   |and now im on the next line
                   |and this is the thrid line, and we're done""".stripMargin

println(rawString)

什么 stripMargin 是不是剥去了之前的任何东西,包括 | 原始字符串中每行开头的字符。

编辑: 这是一个 known Scala bug ——谢谢 extempore :)

更新: 固定在 trunk . 谢谢 即席的 再次:)

希望有帮助:)

--弗拉维厄·西皮根