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	<title>Comments for Learning Lisp</title>
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	<link>http://learninglisp.wordpress.com</link>
	<description>The Road To Lisp</description>
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		<title>Comment on Lisp Web Applications by floor jacks</title>
		<link>http://learninglisp.wordpress.com/2006/05/03/lisp-web-applications/#comment-1345</link>
		<dc:creator>floor jacks</dc:creator>
		<pubDate>Sat, 14 Mar 2009 12:28:06 +0000</pubDate>
		<guid isPermaLink="false">http://learninglisp.wordpress.com/2006/05/03/lisp-web-applications/#comment-1345</guid>
		<description>This is the first time I comment  here and I should say that you give   genuine, and quality information for other bloggers! Great job.
p.s. You have an awesome template for your blog. Where have you got it from?</description>
		<content:encoded><![CDATA[<p>This is the first time I comment  here and I should say that you give   genuine, and quality information for other bloggers! Great job.<br />
p.s. You have an awesome template for your blog. Where have you got it from?</p>
]]></content:encoded>
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	<item>
		<title>Comment on Use the Library by JungleDirector</title>
		<link>http://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1344</link>
		<dc:creator>JungleDirector</dc:creator>
		<pubDate>Tue, 06 Jan 2009 21:07:37 +0000</pubDate>
		<guid isPermaLink="false">https://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1344</guid>
		<description>Subj.
Anybody have?

I&#039;ts better, if you have XRumer 5.04...
Gimme link

See ya</description>
		<content:encoded><![CDATA[<p>Subj.<br />
Anybody have?</p>
<p>I&#8217;ts better, if you have XRumer 5.04&#8230;<br />
Gimme link</p>
<p>See ya</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Use the Library by Apeliexpiff</title>
		<link>http://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1197</link>
		<dc:creator>Apeliexpiff</dc:creator>
		<pubDate>Mon, 17 Dec 2007 11:21:39 +0000</pubDate>
		<guid isPermaLink="false">https://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1197</guid>
		<description>One of the most important roles in this growing industry is played by bookmakers, that deal with the placing of sports bets.</description>
		<content:encoded><![CDATA[<p>One of the most important roles in this growing industry is played by bookmakers, that deal with the placing of sports bets.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Use the Library by naisioxerloro</title>
		<link>http://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1079</link>
		<dc:creator>naisioxerloro</dc:creator>
		<pubDate>Wed, 28 Nov 2007 16:57:24 +0000</pubDate>
		<guid isPermaLink="false">https://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1079</guid>
		<description>Hi. 
Good design, who make it?</description>
		<content:encoded><![CDATA[<p>Hi.<br />
Good design, who make it?</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Use the Library by mr.search</title>
		<link>http://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1064</link>
		<dc:creator>mr.search</dc:creator>
		<pubDate>Sat, 24 Nov 2007 18:20:31 +0000</pubDate>
		<guid isPermaLink="false">https://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-1064</guid>
		<description>Hello 
Please prompt where it is possible to buy online viagra</description>
		<content:encoded><![CDATA[<p>Hello<br />
Please prompt where it is possible to buy online viagra</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Use the Library by alexrttfd</title>
		<link>http://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-974</link>
		<dc:creator>alexrttfd</dc:creator>
		<pubDate>Sat, 10 Nov 2007 19:12:03 +0000</pubDate>
		<guid isPermaLink="false">https://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-974</guid>
		<description>I been searching and searching trying to find the best video game copying software out their. out of months of testing i found one that stood wayy above the rest check out this new 
 
[url=http://www.gamecopy.mzian.com] game copy pro[/url] 
 
software and let me know what you think?</description>
		<content:encoded><![CDATA[<p>I been searching and searching trying to find the best video game copying software out their. out of months of testing i found one that stood wayy above the rest check out this new </p>
<p>[url=http://www.gamecopy.mzian.com] game copy pro[/url] </p>
<p>software and let me know what you think?</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Beginning of Bag Project by &#8220;Learning Lisp&#8221; Bloggers: Life, Death, and Rebirth with Lisp &#171; Learning Lisp</title>
		<link>http://learninglisp.wordpress.com/2006/05/05/beginning-of-bag-project/#comment-916</link>
		<dc:creator>&#8220;Learning Lisp&#8221; Bloggers: Life, Death, and Rebirth with Lisp &#171; Learning Lisp</dc:creator>
		<pubDate>Thu, 01 Nov 2007 20:53:25 +0000</pubDate>
		<guid isPermaLink="false">http://learninglisp.wordpress.com/2006/05/05/beginning-of-bag-project/#comment-916</guid>
		<description>[...] Ah well. That particular blogger only lasted a mere two months before fading into the sunset. His final post included some original code for solving a programming problem and resulted in some helpful comments [...]</description>
		<content:encoded><![CDATA[<p>[...] Ah well. That particular blogger only lasted a mere two months before fading into the sunset. His final post included some original code for solving a programming problem and resulted in some helpful comments [...]</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Use the Library by Ascerry</title>
		<link>http://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-271</link>
		<dc:creator>Ascerry</dc:creator>
		<pubDate>Sun, 24 Jun 2007 19:28:19 +0000</pubDate>
		<guid isPermaLink="false">https://learninglisp.wordpress.com/2006/04/24/use-the-library/#comment-271</guid>
		<description>&lt;a href=&quot;http://ford2007.freehostia.com/ford-modeling-agency-chicago.html&quot; rel=&quot;nofollow&quot;&gt;ford modeling agency chicago&lt;/a&gt;</description>
		<content:encoded><![CDATA[<p><a href="http://ford2007.freehostia.com/ford-modeling-agency-chicago.html" rel="nofollow">ford modeling agency chicago</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Beginning of Bag Project by Vleis</title>
		<link>http://learninglisp.wordpress.com/2006/05/05/beginning-of-bag-project/#comment-154</link>
		<dc:creator>Vleis</dc:creator>
		<pubDate>Mon, 19 Mar 2007 10:22:49 +0000</pubDate>
		<guid isPermaLink="false">http://learninglisp.wordpress.com/2006/05/05/beginning-of-bag-project/#comment-154</guid>
		<description>jeez, lets try this again, the function looks like this:

(defun find20 (list curval)
	   (if (greater-than-or-equal (length list) 1) 
	       (if (less-than-or-equal (+ curval (car list)) 20)
		   (cons (car list) (find20 (cdr list) (+ curval (car list))))
		   (find20 (cdr list) curval))))

I think the greater than and less than symbols screwed up my previous posting, just replace the above instances of greater-than-or-equal and less-than-or-equal with their correct operators.</description>
		<content:encoded><![CDATA[<p>jeez, lets try this again, the function looks like this:</p>
<p>(defun find20 (list curval)<br />
	   (if (greater-than-or-equal (length list) 1)<br />
	       (if (less-than-or-equal (+ curval (car list)) 20)<br />
		   (cons (car list) (find20 (cdr list) (+ curval (car list))))<br />
		   (find20 (cdr list) curval))))</p>
<p>I think the greater than and less than symbols screwed up my previous posting, just replace the above instances of greater-than-or-equal and less-than-or-equal with their correct operators.</p>
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	</item>
	<item>
		<title>Comment on Beginning of Bag Project by Vleis</title>
		<link>http://learninglisp.wordpress.com/2006/05/05/beginning-of-bag-project/#comment-153</link>
		<dc:creator>Vleis</dc:creator>
		<pubDate>Mon, 19 Mar 2007 10:19:43 +0000</pubDate>
		<guid isPermaLink="false">http://learninglisp.wordpress.com/2006/05/05/beginning-of-bag-project/#comment-153</guid>
		<description>I found the original problem you posted kinda interesting so I whipped up the following recursive function to grab integers out of a list that add up to 20 (or less if there is no possibility of getting 20):

&lt;code&gt;
(defun find20 (list curval)
	   (if (&gt;= (length list) 1) 
	       (if (

You can call it like so (using the list your teacher provided):
&lt;code&gt;
(find20 &#039;(15 13 4 9 6 1) 0)
&lt;/code&gt;

which generates the following output:
&lt;code&gt;
(15 4 1)
&lt;/code&gt;
If I now remove the above three integers from the original list and run it through find20 again:
&lt;code&gt;
(find20 &#039;(13 9 6) 0)
&lt;/code&gt;
I get:
&lt;code&gt;
(13 6)
&lt;/code&gt;

I am also still just learning lisp and getting my head around functional programming and recursion in general, hopefully you can use some of this :)

(I&#039;m kinda irritated by the fact that I have no nicer way of passing the running count of items collected so far except via the curval parameter, obviously there is room for improvement still)</description>
		<content:encoded><![CDATA[<p>I found the original problem you posted kinda interesting so I whipped up the following recursive function to grab integers out of a list that add up to 20 (or less if there is no possibility of getting 20):</p>
<p><code><br />
(defun find20 (list curval)<br />
	   (if (&gt;= (length list) 1)<br />
	       (if (</p>
<p>You can call it like so (using the list your teacher provided):<br />
</code><code><br />
(find20 '(15 13 4 9 6 1) 0)<br />
</code></p>
<p>which generates the following output:<br />
<code><br />
(15 4 1)<br />
</code><br />
If I now remove the above three integers from the original list and run it through find20 again:<br />
<code><br />
(find20 '(13 9 6) 0)<br />
</code><br />
I get:<br />
<code><br />
(13 6)<br />
</code></p>
<p>I am also still just learning lisp and getting my head around functional programming and recursion in general, hopefully you can use some of this <img src='http://s.wordpress.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
<p>(I'm kinda irritated by the fact that I have no nicer way of passing the running count of items collected so far except via the curval parameter, obviously there is room for improvement still)</p>
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