From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,604e0f87aa06eab6
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-03-19 03:05:45 PST
Path: 
 archiver1.google.com!news1.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!newsfeed.icl.net!newsfeed.fjserv.net!colt.net!peernews3.colt.net!news0.de.colt.net!news-fra1.dfn.de!news-koe1.dfn.de!RRZ.Uni-Koeln.DE!uni-duisburg.de!not-for-mail
From: Georg Bauhaus <sb463ba@d2-hrz.uni-duisburg.de>
Newsgroups: comp.lang.ada
Subject: Re: Imitation is the sincerest form of flattery
Date: Wed, 19 Mar 2003 11:05:44 +0000 (UTC)
Organization: GMUGHDU
Message-ID: <b59iu8$5qc$1@a1-hrz.uni-duisburg.de>
References: <mailman.0.1047662587.16695.comp.lang.ada@ada.eu.org>
 <1047665830.579605@master.nyc.kbcfp.com>
 <b4vco6$98b$2@a1-hrz.uni-duisburg.de>
 <R6Qca.60199$gi1.40659@nwrdny02.gnilink.net>
 <b56sso$j5i$1@a1-hrz.uni-duisburg.de>
 <1048003120.472344@master.nyc.kbcfp.com>
NNTP-Posting-Host: d2-hrz.uni-duisburg.de
X-Trace: a1-hrz.uni-duisburg.de 1048071944 5964 134.91.1.15 (19 Mar 2003
 11:05:44 GMT)
X-Complaints-To: usenet@news.uni-duisburg.de
NNTP-Posting-Date: Wed, 19 Mar 2003 11:05:44 +0000 (UTC)
User-Agent: tin/1.5.8-20010221 ("Blue Water") (UNIX) (HP-UX/B.11.00
 (9000/831))
Xref: archiver1.google.com comp.lang.ada:35503
Date: 2003-03-19T11:05:44+00:00
List-Id: <comp.lang.ada>

Hyman Rosen <hyrosen@mail.com> wrote:
: Georg Bauhaus wrote:
:>      class LI extends LinkedList<Integer> {}
:>      class LB extends LinkedList<Byte> {}
: 
: This just demonstrates that Java generics are
: second-class citizens. They're just a hidden
: version of the casting that needs to be done
: now.

Depends. If you wanted a list iterator for
LI, the information about what is in an LI isn't readily
available, as it is in List<Integer>. So, indeed, how does
one know that there should be a Iterator<Integer> type?
OTOH, you won't need casting if you know the hidden type
in LI ...

(I have to use them, absent a decent alternative ;-)

A related question (for me) is,
how does one implement nth with List as opposed to List<Any>
when there is just a generic List? So, in Java you can
have both generic and non-generic List interfaces, transparently.
And implement chaos :-)