Scala - case match partial string

Question

I have the following:

serv match {

    case "chat" => Chat_Server ! Relay_Message(serv)
    case _ => null

}

The problem is that sometimes I also pass an additional param on the end of the serv string, so:

var serv = "chat.message"

Is there a way I can match a part of the string so it still gets sent to Chat_Server?

Thanks for any help, much appreciated :)

Answer 1

Use regular expressions, make sure you use a sequence wildcard like _*, e.g.:

val Pattern = "(chat.*)".r

serv match {
     case Pattern(_*) => "It's a chat"
     case _ => "Something else"
}

And with regexes you can even easily split parameter and base string:

val Pattern = "(chat)(.*)".r

serv match {
     case Pattern(chat, param) => "It's a %s with a %s".format(chat, param)
     case _ => "Something else"
}