How do you plan to consume the running sums of these data? How many different keys do you have? <div><br></div><div>If all pure stuff fails, you can always revert to imperative techniques, using a <a href="http://www.haskell.org/ghc/docs/6.6.1/html/libraries/base/Data-Array-ST.html">mutable array</a> or something  :)</div>
<div><div><div><div><div><div><br><div class="gmail_quote">On Fri, Mar 27, 2009 at 3:18 PM, GüŸnther Schmidt <span dir="ltr">&lt;<a href="mailto:gue.schmidt@web.de">gue.schmidt@web.de</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Guys,<br>
<br>
I appreciate the contribution but I&#39;m now more confused than ever :)<br>
<br>
On the Co-Induction-whatever thingy: Thanks, that&#39;s certainly something interesting and I&#39;ll try to find out more about it.<br>
<br>
But it looks like none of all the proposals offers a true solution, at least none from start to finish. The amount of data is large, but finite.<br>
<br>
So for now, I&#39;ll just stick with my initial approach as I&#39;m running out of time.<div><div></div><div class="h5"><br>
<br>
Günther<br>
<br>
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