Why does sliding have a type parameter?

https://issues.scala-lang.org/browse/SI-4778

On Fri, Sep 2, 2011 at 13:40, Cay Horstmann wrote:
> Here is the sliding method from IterableLike[A, Repr]:
>
> def sliding[B >: A](size: Int, step: Int): Iterator[Repr]
>
> Why the [B >: A]? What B could be inferred from where?
>
> Thanks,
>
> Cay
>

On 9/2/11 9:40 AM, Cay Horstmann wrote:
> Here is the sliding method from IterableLike[A, Repr]:
>
> def sliding[B >: A](size: Int, step: Int): Iterator[Repr]

If you wonder how such a crazy thing could happen, realize that I moved
sliding over from Iterator (and now try to remove it from Iterator's
sliding.) I would design it rather differently knowing what I know now.