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object Test {
val a = Array(10)
def main(args : Array[String]) : Unit = {
val a = this.a : AnyRef
Console.println("is object - " + a.isInstanceOf[Object])
Console.println("is seq - " + a.isInstanceOf[Seq[_]])
Console.println("is collection - " + a.isInstanceOf[Collection[_]])
Console.println("is random-access-seq - " + a.isInstanceOf[RandomAccessSeq[_]])
Console.println("is random-access-seq-mutable - " + a.isInstanceOf[RandomAccessSeq.Mutable[_]])
Console.println("not string - " + !a.isInstanceOf[String])
Console.println("not list - " + !a.isInstanceOf[List[_]])
try {
Console.println(a.asInstanceOf[Object].getClass)
} catch { case ex : ClassCastException => Console.println("Bad, arrays should be objects") }
try {
Console.println(a.asInstanceOf[Seq[_]])
} catch { case ex : ClassCastException => Console.println("Bad, arrays should be seqs") }
try {
Console.println(a.asInstanceOf[Collection[_]])
} catch { case ex : ClassCastException => Console.println("Bad, arrays should be collections") }
try {
Console.println(a.asInstanceOf[RandomAccessSeq[_]])
} catch { case ex : ClassCastException => Console.println("Bad, arrays should be random access seqs") }
try {
Console.println(a.asInstanceOf[RandomAccessSeq.Mutable[_]])
} catch { case ex : ClassCastException => Console.println("Bad, arrays should be mutable random access seqs") }
try {
Console.println("not expected: " + a.asInstanceOf[List[_]])
} catch { case ex : ClassCastException => Console.println("Good, arrays are not lists") }
try {
Console.println("not expected: " + a.asInstanceOf[runtime.RichString])
throw new Error("not expected")
} catch { case ex : ClassCastException => Console.println("Good, arrays are not rich strings") }
// check that arrays as seqs are still dynamically typed as arrays
val s = this.a : Seq[Int]
Console.println("is-seq array " + s.isInstanceOf[Array[Char]])
try {
Console.println(s.asInstanceOf[Array[Int]].getClass)
} catch { case ex : ClassCastException => Console.println("Bad, arrays as seqs should still be arrays of Int") }
()
}
}
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