<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.19120"></HEAD> <BODY> <DIV><SPAN class=951110211-02092011><FONT size=2 face=Arial>Exactly. The fastest way is to</FONT></SPAN></DIV> <DIV><SPAN class=951110211-02092011><FONT size=2 face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=951110211-02092011><FONT size=2 face=Arial>1) Add a link to the 'announcements' section like this [[name]]    (before adding the actual article)</FONT></SPAN></DIV> <DIV><SPAN class=951110211-02092011><FONT size=2 face=Arial>2) click on the newly created link, and paste your code there with <pre>   code here   </pre>  tags</FONT></SPAN></DIV> <DIV><SPAN class=951110211-02092011><FONT size=2 face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=951110211-02092011><FONT size=2 face=Arial>br, jukka</FONT></SPAN></DIV> <DIV><SPAN class=951110211-02092011></SPAN> </DIV> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"> <DIV dir=ltr class=OutlookMessageHeader align=left><FONT size=2 face=Tahoma>-----Original Message-----<BR><B>From:</B> Laurent [mailto:laurent.orseau@gmail.com]<BR><B>Sent:</B> 02 September 2011 13:25<BR><B>To:</B> Marijn; Jukka Tuominen<BR><B>Cc:</B> Vincent St-Amour; users@racket-lang.org<BR><B>Subject:</B> Re: [racket] doubly linked list lib<BR><BR></FONT></DIV> <DIV class=gmail_quote>On Fri, Sep 2, 2011 at 12:16, Marijn <SPAN dir=ltr><<A href="mailto:hkBst@gentoo.org">hkBst@gentoo.org</A>></SPAN> wrote:<BR> <BLOCKQUOTE style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class=gmail_quote>-----BEGIN PGP SIGNED MESSAGE-----<BR>Hash: SHA1<BR><BR>Hi Vincent,<BR> <DIV class=im><BR>On 08/31/11 17:50, Vincent St-Amour wrote:<BR>> Are you planning to put this on PLaneT?<BR>><BR>> Vincent<BR><BR></DIV>I wasn't. This code has seen very little testing and has so far only<BR>been used in toy/throw-away code. The Gambit community has a<BR>no-expectation-of-quality place to dump code, appropriately called the<BR>Dumping Grounds[1]. If this was the gambit mailing list I would have<BR>said "sure I'll dump it", but I don't think I am ready to inflict it<BR>on Planet. Maybe my expectations of code on Planet is off, or maybe<BR>racket also needs a Dumping Grounds...<BR></BLOCKQUOTE> <DIV><BR>I think this is what Jukka is has in mind:<BR><A href="http://www.mail-archive.com/users@racket-lang.org/msg07569.html">http://www.mail-archive.com/users@racket-lang.org/msg07569.html</A><BR><BR>Laurent<BR> </DIV> <BLOCKQUOTE style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0pt 0pt 0pt 0.8ex; PADDING-LEFT: 1ex" class=gmail_quote><BR>Marijn<BR><BR>[1]:<A href="http://dynamo.iro.umontreal.ca/%7Egambit/wiki/index.php/Dumping_Grounds" target=_blank>http://dynamo.iro.umontreal.ca/~gambit/wiki/index.php/Dumping_Grounds</A><BR> <DIV class=im><BR>> At Wed, 31 Aug 2011 11:46:34 +0200, Marijn wrote:<BR>>><BR>>> [1  <multipart/signed (7bit)>] [1.1  <multipart/mixed (7bit)>]<BR>>> [1.1.1  <text/plain; ISO-8859-1 (quoted-printable)>] Hi Laurent,<BR>>><BR>>> On 08/30/11 09:18, Laurent wrote:<BR>>>> Thank you very much for this nice intermediate solution, though<BR>>>> I need constant-time append, split, insert, remove, + pointers<BR>>>> to items, etc. Mutation does seem unavoidable, right.<BR>>><BR>>> I implemented a doubly-linked list, not so long ago, connected to<BR>>> a GUI that can insert and delete items and saw no way to make the<BR>>> list functional with multiple simultaneous editors in the GUI.<BR>>> The implementation is as a straightforward cyclical doubly-linked<BR>>> list. I toyed with the idea of having a separate handle object to<BR>>> represent the list versus just the nodes, and there are some<BR>>> rudiments of that left in the code, but in the end the user code<BR>>> uses a special 'top element to indicate where the cyclical list<BR>>> is supposed to start.<BR>>><BR>>> Good luck,<BR>>><BR>>> Marijn<BR></DIV>-----BEGIN PGP SIGNATURE-----<BR>Version: GnuPG v2.0.18 (GNU/Linux)<BR>Comment: Using GnuPG with Mozilla - <A href="http://enigmail.mozdev.org/" target=_blank>http://enigmail.mozdev.org/</A><BR><BR>iEYEARECAAYFAk5grQsACgkQp/VmCx0OL2yB7ACfVmnT7S7y0pvTvUa7mtkRg8EN<BR>GRwAn0DHnPxrnT/+we0gIuvufQRMv3SF<BR>=fD70<BR>-----END PGP SIGNATURE-----<BR> <DIV> <DIV></DIV> <DIV class=h5>_________________________________________________<BR> For list-related administrative tasks:<BR> <A href="http://lists.racket-lang.org/listinfo/users" target=_blank>http://lists.racket-lang.org/listinfo/users</A><BR></DIV></DIV></BLOCKQUOTE></DIV><BR></BLOCKQUOTE></BODY></HTML>