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object FooSeq {
def unapplySeq(x:Any): Option[Product2[Int,Seq[String]]] = {
if(x.isInstanceOf[Bar]) {
val y = x.asInstanceOf[Bar]
Some(y.size, y.name)
} else None
}
def main(args:Array[String]) = {
val b = new Bar
b match {
case FooSeq(s:Int,_,n:String) => Console.println("size "+s+" name "+n)
}
b.size = 54
b.name = List("large","L")
b match {
case FooSeq(s:Int,_,n:String) => Console.println("size "+s+" name "+n)
}
}
}
class Bar {
var size: Int = 50
var name: Seq[String] = List("medium","M")
}
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