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case class MyTuple2[A,B](val _1:A, val snd:B)
object Foo {
def unapply(x:Any): Option[Product2[Int,String]] = {
if(x.isInstanceOf[Bar]) {
val y = x.asInstanceOf[Bar]
Some(MyTuple2(y.size, y.name))
} else None
}
def main(args:Array[String]) = {
val b = new Bar
b match {
case Foo(s:Int,n:String) => Console.println("size "+s+" name "+n)
}
b.size = 54
b.name = "large"
b match {
case Foo(s:Int,n:String) => Console.println("size "+s+" name "+n)
}
}
}
class Bar {
var size: Int = 50
var name: String = "medium"
}
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