On 24/04/07 9:11 AM, Viktor Klang wrote:
Hi Ernie,

"Many" in this case refers to "N", which is "0 ... N",
OK, I was wondering about "many" including "0".
so I'd say while it is techincally correct as-is, perhaps more precise would be to say "1-to-0..1" gatherer, since for every element in, there is 0 or 1 element out.
I see.

Many-to-one would be 0..N -> 1, which means that an empty input would
"could" not "would"?
yield a single output.

Out of curiosity, is either correct technically?


Other than at  initialization or finish, is it possible to have an "empty" input?


-ernie


Cheers,
√

*
*
*Viktor Klang*
Software Architect, Java Platform Group
Oracle
------------------------------------------------------------------------
*From:* core-libs-dev <core-libs-dev-r...@openjdk.org> on behalf of Ernie Rael <err...@raelity.com>
*Sent:* Sunday, 7 April 2024 18:06
*To:* core-libs-dev@openjdk.org <core-libs-dev@openjdk.org>
*Subject:* JEP 473: Stream Gatherers (Second Preview)

This is about what might be a minor doc issue.

In https://openjdk.org/jeps/473 <https://openjdk.org/jeps/473> it says

As another example, |Stream::filter| takes a predicate that determines whether an input element should be passed downstream; this is simply a stateless one-to-many gatherer.
Shouldn't this be "many-to-one"?

-ernie

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