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Re: Tagged objects
From: |
Dr. H. Nikolaus Schaller |
Subject: |
Re: Tagged objects |
Date: |
Thu, 21 Jul 2011 16:13:59 +0200 |
Am 21.07.2011 um 15:22 schrieb Thomas Davie:
> Hey,
>
> I wondered if you guys had seen the fun and games that apple have been having
> abusing the last bit of pointers to make boxing and unboxing NSNumbers (and
> some others) much much faster…
>
> http://objectivistc.tumblr.com/post/7872364181/tagged-pointers-and-fast-pathed-cfnumber-integers-in
Nice idea. I hope they have not tried to patent it.
Here is some prior art:
"DYNAMIC MEMORY MANAGEMENT FOR APL-LIKE LANGUAGES", Rodnay Zaks, Universite de
Technologie de Compiegne, France, Proceedings of ACM SIGPLAN-SIGMICRO Interface
Meeting, Arden House, New York, May 30-June 1, 1973.
Even older than Apple, Inc. :)
-- hns