I don't know If I understood well, but did you try this?<div><br></div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">when<br> $xs : ArrayList() from collect(X())<br>
$total : Number() from accumulate(X($c: count), sum($c))</span></div><div><br></div><div>The accumulate will iterate over all the X and calculate the sum.</div><div><br></div><div>Best,<br><br><div class="gmail_quote">On Fri, May 21, 2010 at 2:12 PM, ljnelson <span dir="ltr"><<a href="mailto:ljnelson@gmail.com">ljnelson@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><br>
I have a rule that needs to make use of the accumulate() function.<br>
<br>
It also needs the value of the first argument to the accumulate() function.<br>
<br>
Suppose there are 5 Xs in working memory, each with "count" fields.<br>
<br>
I need--in my consequence--access to (a) the list of 5 Xs, and (b) the<br>
result of the accumulate function having worked on them (in my case it's<br>
really just a simple sum, so accumulate(X($count : count), sum($count))).<br>
<br>
Naively, I tried this, having a strong and accurate supposition that it<br>
wasn't going to work:<br>
<br>
when<br>
$xs : ArrayList() from collect(X())<br>
$total : Number() from accumulate($xs, sum(count))<br>
<br>
At any rate, I hope that helps convey what I need. My consequence needs the<br>
list of Xs the accumulate function worked on, as well as the result of the<br>
accumulate function (the Number). What's the best way to accomplish this?<br>
<br>
Thanks in advance,<br>
Laird<br>
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