[From nobody Thu Feb  5 08:39:10 2009
Return-path: &lt;thunderbird@henning-thielemann.de&gt;
Received: from mailgate2.urz.uni-halle.de
	(mailgate2.urz.uni-halle.de	[141.48.3.8]) by www.haskell.org (Postfix)
	with ESMTP id C8C6D32408F	for &lt;haskell-cafe@haskell.org&gt;; Thu,
	05 Feb 2009 08:33:15 -0500 (EST)
Received: from mserv3.urz.uni-halle.de ([141.48.3.161])
	by mailgate2.urz.uni-halle.de with esmtp  (Exim 4.69)
	id 1LV4Vf-0005Tv-On ; Thu, 05 Feb 2009 14:43:15 +0100
Received: from janus.informatik.uni-halle.de ([141.48.9.42])
	by mail.uni-halle.de
	(Sun Java(tm) System Messaging Server 6.3-7.03 (built Aug  4 2008;
	32bit)) with ESMTP id &lt;0KEL007RJI42VN60@mail.uni-halle.de&gt;; Thu,
	05 Feb 2009 14:43:14 +0100 (CET)
Received: from [141.48.14.165] (haydn.informatik.uni-halle.de [141.48.14.165])
	by janus.informatik.uni-halle.de (Postfix) with ESMTP id EB709C6ED9; 
	Thu, 05 Feb 2009 14:43:13 +0100 (CET)
Date: Thu, 05 Feb 2009 14:43:13 +0100
From: Henning Thielemann &lt;thunderbird@henning-thielemann.de&gt;
Subject: Re: [Haskell-cafe] Purely funcional LU decomposition
In-reply-to: &lt;351ff25e0902041331i746e426cl207a340800fe687c@mail.gmail.com&gt;
To: Rafael Gustavo da Cunha Pereira Pinto &lt;RafaelGCPP.Linux@gmail.com&gt;
Cc: Dan Piponi &lt;dpiponi@gmail.com&gt;, haskell &lt;haskell-cafe@haskell.org&gt;
Message-id: &lt;498AECF1.8030409@henning-thielemann.de&gt;
MIME-version: 1.0
Content-type: text/plain; charset=ISO-8859-1; format=flowed
Content-transfer-encoding: 7BIT
Delivered-to: haskell-cafe@haskell.org
X-Original-To: haskell-cafe@haskell.org
X-Scan-Signature: 36ed40e4f77c557842f0970ec4034fe4
References: &lt;351ff25e0902031337k1e85cd3fua6ef8dfb7664fd17@mail.gmail.com&gt;
	&lt;625b74080902041109o4a219c3aj87738e7f9b4896bc@mail.gmail.com&gt;
	&lt;351ff25e0902041257x72959e30l35a680076be94271@mail.gmail.com&gt;
	&lt;625b74080902041314l5f388276t184ecf092c5bcfde@mail.gmail.com&gt;
	&lt;351ff25e0902041331i746e426cl207a340800fe687c@mail.gmail.com&gt;
User-Agent: Thunderbird 2.0.0.14 (X11/20080531)

Rafael Gustavo da Cunha Pereira Pinto wrote:
&gt; 
&gt;     interesting to look at real matrix code that people have written and
&gt;     think about what would be needed in a library to make it easier to
&gt;     write.
&gt;     --
&gt;     Dan
&gt; 
&gt; 
&gt; What I miss most is a data structure with O(1) (amortized) direct access.

STArray and STUArray?


]