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object Test extends dotty.runtime.LegacyApp {
class Test(n: Int) extends Iterable[Int] {
private var i = 0
def iterator = new Iterator[Int] {
def hasNext = i < n
def next =
if (hasNext) { val v = i; i += 1; v }
else throw new IndexOutOfBoundsException("empty iterator")
}
}
{
val x = new Test(10)
println(x.isEmpty)
println(x.mkString(","))
}
{
val x = new Test(10)
println(x.filter(_ > 4).mkString(","))
}
{
val x = new Test(10)
val y = x.partition(_ % 2 == 0)
println(y._1.mkString(","))
println(y._2.mkString(","))
}
}
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