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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I think as of now copy is certainly not suitable for all .NET objects. For starters not all .NET objects are serializable/copyable. There should probably
be some effort to close the gaps where it makes sense. For example something which implements ICloneable could have a __copy__ method added to it. This is similar to how we add a __reduce_ex__ method for things which implement ISerializable. But if something
doesn’t implement either of these interfaces then there’s no standard way for us to copy these objects.<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">If you have specific object types which you know you need to copy I would suggest registering the type with copy_reg. That should at least give you a solution
for your specific scenarios. <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">You also mentioned the null reference exception (“object reference not set to object instance…”). That sounds like a bug – I would guess you’re running in
a multi-threaded environment? If you could get a repro of this that’d be great as it looks like it could be an issue w/ our dictionary implementation not being thread safe.<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com]
<b>On Behalf Of </b>Pablo Dalmazzo<br>
<b>Sent:</b> Wednesday, October 13, 2010 11:51 AM<br>
<b>To:</b> IronPython Mailing list<br>
<b>Subject:</b> [IronPython] expected behavior of the module copy with .net objects<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Hi guys,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Sorry for being annoying about this but I just want to know where I'm standing at :)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">It would seem to me the copy module has some problems copying .net objects in general. I was wondering if I'm pretending too much for that module and it will never fully copy
objects instantiated from .net classes, or it's a goal for it to do it someday, or I just happened to find a couple of errors, or Im not using it rightly for what it was meant to be. I dont know 5% of what you know so it's an honest question :)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Aside there are a couple of errors I cant reproduce, and that it didnt copy System.DBNull , now I see it loses property values when copying<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">a System.Data.SqlConnection object, properties such as "DataSource", "DataBase", etc. they get empty strings after being copied. Just in case<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">I tried with the original version of the module/file copy. I guess you have thousands of things to check but I just want to know, it's the module supposed to copy any object
instantiated from .net classes or it's only supposed to fully work only for custom made classes?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Greetings, Pablo Dalmazzo<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">P.S: sorry about insisting again with this but I've also added another example where it seems to fail :)<o:p></o:p></span></p>
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