Re: [isabelle] feature request: defining tuples
- To: John Wickerson <johnwickerson at cantab.net>
- Subject: Re: [isabelle] feature request: defining tuples
- From: Makarius <makarius at sketis.net>
- Date: Mon, 2 Dec 2013 17:23:52 +0100 (CET)
- Cc: USR Isabelle Mailinglist <isabelle-users at cl.cam.ac.uk>
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- User-agent: Alpine 2.00 (LNX 1167 2008-08-23)
On Thu, 28 Nov 2013, Makarius wrote:
We need to strive to *remove* more features that are not strictly
necessary. All this is a heavy weight, and some day the system will just
collapse due to the laws of gravity.
Concerning the fundamental laws of General Relativity in Software
Construction, I've recently found this interesting information about the
forthcoming JDK 8:
122 Remove the Permanent Generation
Remove the permanent generation from the Hotspot JVM and thus the need
to tune the size of the permanent generation.
173 Retire Some Rarely-Used GC Combinations
Remove three rarely-used combinations of garbage collectors in order to
reduce ongoing development, maintenance, and testing costs.
This is a major revolution -- I can imagine the screeming of some existing
users of the platform.
Sun never retired old things: there are tons of deprecated APIs from Java
1.0 until today. Oracle seems to recover some common sense now, seeing
that it cannot handle arbitrary weight, although Oracle is a much larger
company than Sun ever was.
Lets hope that JDK 8, when it is released next spring, will make a big
step forward (like JDK 7 did over JDK 6). Isabelle/Scala and its various
front-ends depend on it. (It is the weakest point in the PIDE equation.)
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