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object Test { def main(args: Array[String]) { val a = new Array[Int](10) val b = new Array[Any](10) for (i <- 0 until 10) b(i) = i Array.copy(b, 3, a, 3, 7) assert(a.toSeq == List(0, 0, 0, 3, 4, 5, 6, 7, 8, 9)) } }