RFR: 8272137: Make Collection and Optional classes streamable

Sun Aug 15 02:48:29 UTC 2021

On Mon, 9 Aug 2021 12:28:23 GMT, CC007 <github.com+5381337+CC007 at openjdk.org> wrote:

> create Streamable and ParallelStreamable interface and use them in Collection and Optional

I read through [these posts](http://mail.openjdk.java.net/pipermail/lambda-libs-spec-experts/2013-June/thread.html#1910) and while I did see good reasons for not moving stream to Iterable, I didn't see any mention of a separate Streamable-like interface, so could you elaborate on that it "did not carry its weight"?

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PR: https://git.openjdk.java.net/jdk/pull/5050