Scala正则表达式提取器
示例
具有分组部分的正则表达式可以用作提取器:
scala> val address = """(.+):(\d+)""".raddress: scala.util.matching.Regex = (.+):(\d+)
scala> val address(host, port) = "some.domain.org:8080"
host: String = some.domain.org
port: String = 8080
请注意,如果不匹配,MatchError则会在运行时抛出a :
scala> val address(host, port) = "something not a host and port"scala.MatchError: something not a host and port (of class java.lang.String)
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