How do I setup multiple ORed type bounds in Scala

Question

Is it possible to do something like this in Scala:

class MyTest {
   def foo[A <: String _or_ A <: Int](p:List[A]) =  {} 
}

That is,

Answer 1

There is this hack:

implicit val x: Int = 0
def foo(a: List[Int])(implicit ignore: Int) { }

implicit val y = ""
def foo(a: List[String])(implicit ignore: String) { }

foo(1::2::Nil)
foo("a"::"b"::Nil)

See http://michid.wordpress.com/2010/06/14/working-around-type-erasure-ambiguities-scala/

And also this question.