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raw前缀可用于告诉编译器不要转义字符串中的任何字符。但是为什么当我尝试这样做时会出现编译错误？
raw
raw"\d".r // not escaped slash
您使用的是哪个版本的 Scala？在 2.10.0 中工作正常：
Welcome to Scala version 2.10.0 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_37). Type in expressions to have them evaluated. Type :help for more information. scala> raw"\d".r res0: scala.util.matching.Regex = \d