From pbenedict at apache.org  Mon Jun  2 13:33:19 2014
From: pbenedict at apache.org (Paul Benedict)
Date: Mon, 2 Jun 2014 08:33:19 -0500
Subject: Improved variance for generic classes and interfaces
Message-ID: <CABLGb9zWQim1qWiVS8Tw0Y9_6CnUPd9dosnzXExPyDuA=8b1UQ@mail.gmail.com>

For anyone here who likes API designing, take a look at this new proposal
(for JDK 9?):
https://bugs.openjdk.java.net/browse/JDK-8043488

PS: I found the PDF references at the ticket's end to be quite insightful.

Cheers,
Paul

From brian.goetz at oracle.com  Mon Jun  2 16:57:45 2014
From: brian.goetz at oracle.com (Brian Goetz)
Date: Mon, 2 Jun 2014 12:57:45 -0400
Subject: Improved variance for generic classes and interfaces
In-Reply-To: <CABLGb9zWQim1qWiVS8Tw0Y9_6CnUPd9dosnzXExPyDuA=8b1UQ@mail.gmail.com>
References: <CABLGb9zWQim1qWiVS8Tw0Y9_6CnUPd9dosnzXExPyDuA=8b1UQ@mail.gmail.com>
Message-ID: <DE2E2A6F-6044-42C6-93DC-87FF32B095CC@oracle.com>

Actually, the main value here to API designers is that what would ordinarily be a hard-to-correct mistake (defining a method to take Consumer<T> rather than Consumer<? super T>) would no longer be a mistake.  For API designers, there?s not much to learn, just a way of saying those who don?t fully understand generics (which is most of us) from some inevitable mistakes.  

On Jun 2, 2014, at 9:33 AM, Paul Benedict <pbenedict at apache.org> wrote:

> For anyone here who likes API designing, take a look at this new proposal
> (for JDK 9?):
> https://bugs.openjdk.java.net/browse/JDK-8043488
> 
> PS: I found the PDF references at the ticket's end to be quite insightful.
> 
> Cheers,
> Paul
> 


From joe.darcy at oracle.com  Mon Jun  2 17:34:22 2014
From: joe.darcy at oracle.com (Joe Darcy)
Date: Mon, 02 Jun 2014 10:34:22 -0700
Subject: Milling Project Coin; mailing list being retired
Message-ID: <538CB59E.3080606@oracle.com>

Hello,

A quick note on Project Coin: I've submitted a JEP to round off a few 
rough edges present in the original JDK 7 era language features:

http://mail.openjdk.java.net/pipermail/compiler-dev/2014-May/008823.html
     https://bugs.openjdk.java.net/browse/JDK-8042880

These adjustments may (or may not) be part of JDK 9.

On other matters, since Project Coin shipped with JDK 7 several years 
ago, I've made this list moderated as a prelude to the list being more 
formally archived, so if not the last, this message will be one of the 
last messages to this list.

Thanks for all the good discussions,

-Joe