Hi Carla. I would like to help you, but I have no idea. I could reproduce it.<br><br>Maybe Lukas, Igor, Eliot etc can help you. I have no idea.<br><br>Cheers<br><br>Mariano<br><br><div class="gmail_quote">2010/5/18 Carla F. Griggio <span dir="ltr">&lt;<a href="mailto:carla.griggio@gmail.com">carla.griggio@gmail.com</a>&gt;</span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi everybody!<div><br></div><div>Well, maybe you are already aware of this... maybe not. I tried to find an issue about this and unless I didn&#39;t think of the right keywords, it&#39;s not there.</div>
<div><br></div><div>

I was debugging a template method and sudenly I found myself spending ours trying to find out why I got different results when printing the result of a message sent to super and when steping into that message and printing the (same) result there.�</div>


<div><br></div><div>Imagine this simple situation (I attatch the complete code and some tests so you can reproduce this):</div><div><br></div><div>AverageTotalization inherits from Totalization.</div><div>WeightedAverageTotalization inherits from AverageTotalization.</div>


<div><br></div><div><div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">Totalization&gt;&gt;total</span></span></font></div>

<div><span style="white-space: pre;"><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">	</span></span></font></span><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">^self summatory</span></span></font></div>


<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);"><br></span></span></font></div>

<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">AverageTotalization&gt;&gt;total</span></span></font></div>

<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">�� � � �^</span></span></font><b><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">(</span></span></font></b><b><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">super total)</span></span></font></b><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);"> / self denominator</span></span></font></div>


<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);"><br></span></span></font></div>

<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">AverageTotalization&gt;&gt; denominator</span></span></font></div>

<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">�� � � �^values size</span></span></font></div>

<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);"><br></span></span></font></div>

<div><div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">WeightedAverageTotalization&gt;&gt; denominator</span></span></font></div>

<div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">&quot;Weights is a dictionary&quot;</span></span></font></div>

<div><span style="white-space: pre;"><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">	</span></span></font></span><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">^self weights values sum</span></span></font></div>


</div><div><span style="background-color: rgb(255, 255, 255);"><br></span></div><div><span style="background-color: rgb(255, 255, 255);"><br></span></div><div><span style="background-color: rgb(255, 255, 255);">If I debug </span><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">aWeightedAverateTotalization tota</span></span></font><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><span style="background-color: rgb(255, 255, 255);">l</span></span></font>��and try to print <b><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;">super total</span></font></b> in the debugger ParagraphEditor, I&#39;ll get this result:</div>


<div><br></div><div><span style="font-size: large;"><font face="&#39;courier new&#39;, monospace">(self summatory / self denominator)�</font></span></div><div><br></div><div>

instead of just:</div><div><br></div><div><span style="font-size: large;"><font face="&#39;courier new&#39;, monospace">self summatory</font></span></div><div><font face="&#39;courier new&#39;, monospace"><span style="font-size: large;"><br>


</span></font></div>This only happens when I print or inspect or other do-its in the debugger window. The method lookup works OK when just evaluating the code (the tests I made are green).</div><div><br></div><div>I think that when you print or inspect (etc) <b>super total</b>, the evaluation context takes WeightedAverageTotalization class instead of AverageTotalization, so when total is sent to super under that context, the code is looked up on AverageTotalization instead of Totalization.�</div>


<div>Could that be possible? Am I thinking right?</div><div><br></div><div>I spent a <b><i>while</i></b> chasing this bug, and I found a solution, but I don&#39;t know if it&#39;s OK or if it&#39;s the best. It&#39;s simple and it seems to work. I tested it in the last PharoCore1.1 unstable image.</div>


<div><br></div><div>I attach some code to reproduce the error (you&#39;ll get a halt when you run the test, read the comments, the problem is clear when you run the weighted average test), and the code that fixes this.</div>


<div><br></div><div>If you confirm that this was not a known issue, I&#39;ll register it on the issue tracker with both these attachments.</div><div><br></div><div>If it was a known issue... well, I learned :) (I think XD)</div>


<div><br></div><div>Cheers!</div><div><br></div><font color="#888888"><div>Carla.</div>
</font><br>_______________________________________________<br>
Pharo-project mailing list<br>
<a href="mailto:Pharo-project@lists.gforge.inria.fr">Pharo-project@lists.gforge.inria.fr</a><br>
<a href="http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project" target="_blank">http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project</a><br></blockquote></div><br>