object Test { object Foo extends Seq[Int] { def apply(i: Int) = i def length = 4 def iterator = Iterator(0,1,2,3,4) } def main(args: Array[String]) = { println(Foo indexWhere(_ >= 2,1)) println(Foo.toList indexWhere(_ >= 2,1)) println(Foo segmentLength(_ <= 3,1)) println(Foo.toList segmentLength(_ <= 3,1)) println(Foo lengthCompare 7) println(Foo.toList lengthCompare 7) println(Foo lengthCompare 2) println(Foo.toList lengthCompare 2) println(Foo lengthCompare 5) println(Foo.toList lengthCompare 5) } }