Getting rid of pull

[Gernot Neppert]

2012/12/19 Brian Goetz <brian.goetz at oracle.com>

>
>
> We can even go one step farther, and eliminate iterators completely, but
> it involves some ugliness.  The ugliness involves use of an exception to
> signal from a forEach target through the forEach source to the initiator of
> the forEach to about dispensing of elements.  (We can eliminate most of the
> cost of the exception by not gathering the stack trace, which is by far the
> most expensive part.)  Then, Spliterator need not even support an
> iterator() method, just a forEach method that doesn't fall apart if you
> throw an exception through it.  (Similarly, we don't expose an iterator()
> method, just a version of forEach that lets the target say "no mas" which
> causes the exception to be thrown.)
>


Just a thought: given the name of Block's method ("accept"), wouldn't it
fit in very nicely to simply have it return a boolean saying "OK, accepted,
give me more" or "No thank you, I'm full"?

That way you wouldn't need ugly Exceptions to indicate End Of Stream
Traversal.