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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Just to follow up on my own post :)<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>obj1: (|<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>    mySlot = 23. “Default value”<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>    mySlot: x = ( _AddSlots: (| mySlot <- 0
|). mySlot: x )<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>    |)<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>obj2: (| parent* = obj1 |)<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>seems to work:<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>obj2 mySlot  ---> 23<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>obj2 mySlot: 34     ---> obj2<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>obj2 mySlot ---> 34<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>now obj2 is (| parent* = obj1. mySlot <- 34 |)<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Anyone tried this an approach? Do you think it would work in
practice?<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Russell<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> self-interest@yahoogroups.com
[mailto:self-interest@yahoogroups.com] <b>On Behalf Of </b>Russell Allen<br>
<b>Sent:</b> Friday, 16 April 2010 1:01 PM<br>
<b>To:</b> self-interest@yahoogroups.com<br>
<b>Subject:</b> RE: [self-interest] Propogating slot changes in Morphs<o:p></o:p></span></p>

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<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>  <o:p></o:p></p>

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<p style='margin-bottom:12.0pt'>It sounds as if 'clone' has a different meaning
in Io? It doesn't mean<br>
'copy' but 'create new child'?<br>
<br>
Talking about Self though, I guess it depends on how delegation is<br>
conceptualised. If you think of parents are being shared parts of objects,<br>
then an object is made up of its own slots and also slots it shares with<br>
other objects. It seems as if what is needed is a third concept - slots<br>
which are 'semi-shared'.<br>
<br>
Russell<br>
<br>
-----Original Message-----<br>
From: <a href="mailto:self-interest%40yahoogroups.com">self-interest@yahoogroups.com</a>
[mailto:<a href="mailto:self-interest%40yahoogroups.com">self-interest@yahoogroups.com</a>]<br>
On Behalf Of Chris Double<br>
Sent: Friday, 16 April 2010 12:39 PM<br>
To: <a href="mailto:self-interest%40yahoogroups.com">self-interest@yahoogroups.com</a><br>
Subject: Re: [self-interest] Propogating slot changes in Morphs<br>
<br>
On 16/04/10 14:20, Russell Allen wrote:<br>
> Ideally I suppose what is needed is a slot which 'belongs' to the parent<br>
> object but which nevertheless can have different values depending on the<br>
> child.<br>
<br>
Yes, this is similar to how inheritance works in the Io programming <br>
language. When you clone an object it doesn't clone the slots. it does <br>
copy-on-write in that it creates a copy of the cloned objects slots when <br>
you set them on the child. This makes 'data parents' a bit easier to <br>
deal with in that you can add new slots to all cloned objects easier.<br>
<br>
Thanks for the pointer to copy down slots - I'll read up on them.<br>
<br>
Chris.<br>
-- <br>
<a href="http://www.bluishcoder.co.nz">http://www.bluishcoder.co.nz</a><br>
<br>
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