Scala，如何访问整个匹配项 : X match {case Y(z) as matched =>

Question

scala 中是否有一种语法或方法可以访问 case 语句中的整个匹配结构？

澄清一下，如果有“as”关键字，可以这样做:

x match {
  case Y(z) as matched =>
    // do stuff both with "matched" and "z" here ...
  ...
}

Answer 1

您应该能够使用@ 语法:

x match {
  case matched @ Y(z) =>
    // do stuff both with "matched" and "z" here ...
  ...
}

来自 here