I would like to know whether it&#39;s a design choice or a technical obstacle.<br><br><div>I&#39;ve seen:</div><div><br></div><div><div>Parser&gt;&gt;assignment: varNode</div><div><span class="Apple-tab-span" style="white-space:pre">	</span>&quot; var &#39;:=&#39; expression =&gt; AssignmentNode.&quot;</div>

<div><span class="Apple-tab-span" style="white-space:pre">	</span>| loc start |</div><div><span class="Apple-tab-span" style="white-space:pre">	</span>(loc := varNode assignmentCheck: encoder at: prevMark + requestorOffset) &gt;= 0</div>

<div><span class="Apple-tab-span" style="white-space:pre">		</span>ifTrue: [^self notify: &#39;Cannot store into&#39; at: loc].</div></div><div>���� �� �� ��.....</div><div><br></div><div><br></div><div><div>TempVariableNode&gt;&gt;assignmentCheck: encoder at: location</div>

<div><span class="Apple-tab-span" style="white-space:pre">	</span>^((self isBlockArg and: [Parser allowBlockArgumentAssignment not])</div><div><span class="Apple-tab-span" style="white-space:pre">	</span> �� ��or: [self isMethodArg]) �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� ��&quot;&lt;-- not allowed !&quot;</div>

<div><span class="Apple-tab-span" style="white-space:pre">			</span>ifTrue: [location]</div><div><span class="Apple-tab-span" style="white-space:pre">			</span>ifFalse: [-1]</div></div><div><br></div><div>But no explanation :(</div>

<div><br></div><div><br></div><div>Laurent</div><div><br></div><div><br></div><div><br><div class="gmail_quote">On Sun, Nov 28, 2010 at 10:59 AM, Max Leske <span dir="ltr">&lt;<a href="mailto:maxleske@gmail.com">maxleske@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word">Yeah, that&#39;s true, I&#39;ve noticed that too. I guess it&#39;s on purpose but I have no idea. AFAIK you can&#39;t assign a new value to a parameter anywhere in the method not only when using blocks. Maybe it&#39;s not possible because there is not really a &#39;variable&#39; but only a reference. So assigning a new value to the parameter would effectively override the reference. But don&#39;t trust me on this....<div>

<br></div><div>Cheers,</div><div>Max</div><div><div></div><div class="h5"><div><br></div><div><br><div><div>On 28.11.2010, at 10:54, laurent laffont wrote:</div><br><blockquote type="cite">Sorry<div><br></div><div><span style="font-family:arial, sans-serif;font-size:13px;border-collapse:collapse"><div>

foo: n��</div>����^[:i| n := n+i. ]</span></div><div><font face="arial, sans-serif"><span style="border-collapse:collapse"><br>

</span></font></div><div><font face="arial, sans-serif"><span style="border-collapse:collapse">vs</span></font></div><div><font face="arial, sans-serif"><span style="border-collapse:collapse"><br>

</span></font></div><div><font face="arial, sans-serif"><span style="border-collapse:collapse"><span style="font-size:13px">foo: n��<br>

����|s|��<br>����s := n.��<br>����^[:i| s := s+i. ]</span></span></font></div><div><font face="arial, sans-serif"><span style="border-collapse:collapse"><br></span></font></div>

<div><font face="arial, sans-serif"><span style="border-collapse:collapse"><br></span></font></div><div><font face="arial, sans-serif"><span style="border-collapse:collapse">Laurent<br>

</span></font><br><div class="gmail_quote">On Sun, Nov 28, 2010 at 10:51 AM, Max Leske <span dir="ltr">&lt;<a href="mailto:maxleske@gmail.com" target="_blank">maxleske@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">



<div style="word-wrap:break-word">In the first example you didn&#39;t declare &#39;s&#39;:<div><br></div><div>foo:n</div><div>^ [ :i || s | s:= s+i ]</div><div><br></div><div>Or did I misunderstand the question?</div><div>



<br></div><div>Cheers,</div><div>Max</div><div><div></div><div><div><br></div><div><br><div><div>On 28.11.2010, at 10:30, laurent laffont wrote:</div><br><blockquote type="cite"><div>Hi,</div><div><br></div><div>

I can&#39;t write</div><div><br></div><div>foo: n��</div>����^[:i| s := s+i. ]<div><br></div><div>but��<br><div><br></div>foo: n <br>����|s| <br>����s := n. <br>����^[:i| s := s+i. ]<br>

<br></div><div><br></div><div>Why ?</div><div><br></div><div><br></div><div>Cheers,��</div><div><br>Laurent Laffont<br><br>Pharo Smalltalk Screencasts: <a href="http://www.pharocasts.com/" target="_blank">http://www.pharocasts.com/</a><br>





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