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object Test extends Application {
val s0: Stream[Int] = Stream.empty
println(s0.take(1))
println(s0.takeWhile(_ > 0))
println
val s1 = Stream.cons(1, Stream.empty)
println(s1.toArray)
println(s1.take(1))
println(s1.take(2))
println(s1.drop(1))
println(s1.drop(2))
println(s1.drop(-1))
println(s1.dropWhile(_ > 0))
println
val s2 = s1.append(Stream.cons(2, Stream.empty))
println(s2.toArray)
println(s2.drop(1))
println(s2.drop(2))
println(s2.drop(-1))
println(s2.dropWhile(_ > 0))
println
// ticket #153
def powers(x: Int) = if ((x&(x-1)) == 0) Some(x) else None
val s3 = Stream.range(1, 100000)
println(s3.flatMap(powers).reverse.head)
}
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