Scala regex unapply magic

regex-unapply.scala

scala> val myRegex = """Foo=([0-9]+) Bar=([A-Z]+)""".r
myRegex: scala.util.matching.Regex = Foo=([0-9]+) Bar=([A-Z]+)

scala> "Foo=123 Bar=ABC" match {
     | case myRegex(foo, bar) => 
     |    println("foobar looks like %s-%s".format(foo,bar))
     | case _ => println("not a match")
     | }
foobar looks like 123-ABC

scala> "LOLCATS4LIFE" match {
     | case myRegex(foo, bar) => 
     |    println("foobar looks like %s-%s".format(foo,bar))
     | case _ => println("not a match")
     | }
not a match