case class Foo(x: Int, ys: Int*) {
// We write our own toString because of SI-7735
override def toString = (x +: ys).mkString("Foo(", ", ", ")")
}
object Test {
def f1(x: Any) = x match {
case Foo(x) => true
case _ => false
}
def f2(x: Any) = x match {
case Foo(x, y) => true
case _ => false
}
def f3(x: Any) = x match {
case Foo(x, y, z) => true
case _ => false
}
def f1seq(x: Any) = x match {
case Foo(x, ys @ _*) => true
case _ => false
}
def f2seq(x: Any) = x match {
case Foo(x, y, zs @ _*) => true
case _ => false
}
def f3seq(x: Any) = x match {
case Foo(x, y, z, qs @ _*) => true
case _ => false
}
val x1 = Foo(1)
val x2 = Foo(1, 2)
val x3 = Foo(1, 2, 3)
val fs = List[Any => Boolean](f1, f2, f3)
val fseqs = List[Any => Boolean](f1seq, f2seq, f3seq)
val xs = List[Foo](x1, x2, x3)
def main(args: Array[String]): Unit = {
for ((f, i) <- fs.zipWithIndex) {
xs foreach (x => println(s"f${i+1}($x) == ${f(x)}"))
println("")
}
for ((f, i) <- fseqs.zipWithIndex) {
xs foreach (x => println(s"f${i+1}seq($x) == ${f(x)}"))
println("")
}
}
}
