Transpose on infinite stream loops forever

问题

Consider the following:

Stream.continually(List(1,2,3)).transpose

You would expect to get something equivalent to:

Stream(
  Stream.continually(1),
  Stream.continually(2),
  Stream.continually(3)
)

However, the upper construct loops infinitely. Is there a workaround for this? Is this to be considered a bug?

Question came up discussing this answer.

EDIT

I know that a function like this writable, see the following example. But is there something in the library?

def myTranspose[A,B](in: Stream[A])
     (implicit asTraversable: A => GenTraversableOnce[B]): Stream[Stream[B]] = {
  val len = asTraversable(in.head).size

  for (i <- (0 until len).toStream)
    yield in.map(el => asTraversable(el).toIndexedSeq(i))
}

来源：https://stackoverflow.com/questions/17116061/transpose-on-infinite-stream-loops-forever