Scala – case match partial string

Use regexes 😉

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

serv match {
     case Pattern(chat) => "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"
}