Email list hosting service & mailing list manager

Generic interfaces Daphne Preston-Kendal (23 Jul 2021 11:34 UTC)
Re: Generic interfaces Lassi Kortela (23 Jul 2021 11:48 UTC)
Against hierarchy Lassi Kortela (23 Jul 2021 11:56 UTC)
Re: Against hierarchy Marc Nieper-Wißkirchen (23 Jul 2021 12:04 UTC)
Re: Against hierarchy Lassi Kortela (23 Jul 2021 12:08 UTC)
Re: Against hierarchy Marc Nieper-Wißkirchen (23 Jul 2021 12:26 UTC)
R6RS exception hierarchy Lassi Kortela (23 Jul 2021 12:39 UTC)
Re: R6RS exception hierarchy Marc Nieper-Wißkirchen (23 Jul 2021 13:09 UTC)
Re: R6RS exception hierarchy Lassi Kortela (23 Jul 2021 16:05 UTC)
Re: R6RS exception hierarchy Marc Nieper-Wißkirchen (23 Jul 2021 16:24 UTC)
Re: R6RS exception hierarchy Arthur A. Gleckler (23 Jul 2021 17:19 UTC)
Re: R6RS exception hierarchy Marc Nieper-Wißkirchen (23 Jul 2021 17:49 UTC)
Re: R6RS exception hierarchy Arthur A. Gleckler (23 Jul 2021 19:28 UTC)
Re: R6RS exception hierarchy John Cowan (26 Jul 2021 21:32 UTC)
Re: R6RS exception hierarchy Marc Nieper-Wißkirchen (27 Jul 2021 05:46 UTC)
Re: Generic interfaces Daphne Preston-Kendal (23 Jul 2021 17:47 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (23 Jul 2021 18:17 UTC)
Re: Generic interfaces Adam Nelson (23 Jul 2021 18:55 UTC)
Re: Generic interfaces Per Bothner (24 Jul 2021 19:31 UTC)
Re: Generic interfaces John Cowan (24 Jul 2021 04:27 UTC)
Re: Generic interfaces John Cowan (24 Jul 2021 04:26 UTC)
Re: Generic interfaces Daphne Preston-Kendal (25 Jul 2021 09:08 UTC)
Re: Generic interfaces Amirouche (25 Jul 2021 14:36 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (23 Jul 2021 12:18 UTC)
Re: Generic interfaces Daphne Preston-Kendal (23 Jul 2021 17:49 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (23 Jul 2021 17:51 UTC)
Re: Generic interfaces Daphne Preston-Kendal (23 Jul 2021 18:12 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (23 Jul 2021 18:39 UTC)
Re: Generic interfaces John Cowan (24 Jul 2021 03:56 UTC)
Re: Generic interfaces John Cowan (24 Jul 2021 02:22 UTC)
Re: Generic interfaces Jeremy Steward (24 Jul 2021 03:38 UTC)
Re: Generic interfaces Amirouche (25 Jul 2021 06:19 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (25 Jul 2021 08:39 UTC)
Re: Generic interfaces Daphne Preston-Kendal (25 Jul 2021 09:28 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (25 Jul 2021 10:04 UTC)
Re: Generic interfaces Daphne Preston-Kendal (25 Jul 2021 10:47 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (25 Jul 2021 12:16 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (29 Jul 2021 08:18 UTC)
Re: Generic interfaces John Cowan (26 Jul 2021 00:04 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (26 Jul 2021 06:25 UTC)
Re: Generic interfaces John Cowan (26 Jul 2021 12:26 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (26 Jul 2021 13:00 UTC)
Re: Generic interfaces Ray Dillinger (26 Jul 2021 19:28 UTC)
Re: Generic interfaces John Cowan (26 Jul 2021 19:53 UTC)
Re: Generic interfaces Arthur A. Gleckler (26 Jul 2021 22:15 UTC)
Re: Generic interfaces John Cowan (25 Jul 2021 23:37 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (26 Jul 2021 06:10 UTC)
Re: Generic interfaces John Cowan (26 Jul 2021 11:43 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (26 Jul 2021 12:09 UTC)
Re: Generic interfaces John Cowan (26 Jul 2021 13:14 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (26 Jul 2021 13:37 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (16 Nov 2021 18:52 UTC)
Re: Generic interfaces John Cowan (25 Jul 2021 23:00 UTC)
Re: Generic interfaces Marc Nieper-Wißkirchen (26 Jul 2021 05:44 UTC)

Re: Generic interfaces Per Bothner 24 Jul 2021 19:31 UTC


On 7/23/21 11:55 AM, Adam Nelson wrote:
> It seems like the intersection of the Java object system and the CLOS object system is... just the Java object system. CLOS is strictly more powerful (multimethods, runtime class updates, more dynamic typing) but it's also not portable to Kawa (or other Schemes based on OO platforms, like JavaScript or the CLR).

Of course Kawa *could* implement CLOS - but you'd have to do most of it by hand
without benefiting from the JVM performance optimizations.

Java 7 introduced MethodHandle and 'invokedynamic' which could be useful in
implementing CLOS-style method dispatch.  More recently GraalVM seems like it
could enable even deeper optimization possibilities.  However, I personally
don't have a good understandiing of invokedynamic and even less of GraalVM,
and don't have any plans to make use of them for Kawa.  It would probably
benefit Kawa to make use of invokedynamic for things like generic
arithmetic, but I don't have time to explore that.

(Kawa does make use of Java 7 Methodhandles, though.)

I think Kawa as it is occupies a nice sweet spot in terms of performance
and expressibility, but that may change as technology changes, and
there are certainly room for betterment.
--
	--Per Bothner
xxxxxx@bothner.com   http://per.bothner.com/