scala learning – 5

object EMail {
    def unapply(str:String) :Option[(String,String)] ={
        println("i am unapply")
        val parts = str split "@"
        if(parts.length==2) Some(parts(0),parts(1)) else None
    }
}

"[email protected]" match{
    case Email(u) => println("user is " + u)
    case _ => println("error")
}

i am unapply
user is aa mail is cc.com