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<DIV>
<DIV>Dino,</DIV>
<DIV> </DIV>
<DIV>Yes that works.</DIV>
<DIV> </DIV>
<DIV>I discovered I can also initialize the references to the arrays as
follows:</DIV>
<DIV> </DIV>
<DIV>>>> x =
clr.Reference[System.Array[float]]((0,0,0))<BR>>>> pi =
clr.Reference[System.Array[float]]((0,0,0))<BR>>>> slack =
clr.Reference[System.Array[float]]((0,0,0))<BR>>>> dj =
clr.Reference[System.Array[float]]((0,0,0))</DIV>
<DIV> </DIV>
<DIV>Thanks for your help on this.</DIV>
<DIV> </DIV>
<DIV>Frank</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="FONT: 10pt arial"><B>From:</B> <A
title=mailto:dinov@exchange.microsoft.com
href="mailto:dinov@exchange.microsoft.com">Dino Viehland</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=mailto:users@lists.ironpython.com
href="mailto:users@lists.ironpython.com">Discussion of IronPython</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, August 25, 2006 7:52
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [IronPython] c# function
that passes arguments by reference</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">The
Reference object is just a holder so that you can pass it in, and then use it
after the call. It has a .Value property that will return you the
updated value (or the original if the value hasn’t changed). So x.Value
should get you the new value.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: 'Segoe UI','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: 'Segoe UI','sans-serif'"> <A
title=mailto:users-bounces@lists.ironpython.com
href="mailto:users-bounces@lists.ironpython.com">users-bounces@lists.ironpython.com</A>
[mailto:users-bounces@lists.ironpython.com] <B>On Behalf Of </B>Frank
Kampas<BR><B>Sent:</B> Friday, August 25, 2006 2:17 PM<BR><B>To:</B>
Discussion of IronPython<BR><B>Subject:</B> Re: [IronPython] c# function that
passes arguments by reference<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">Ok,
that worked but what I got back is not very useful<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">>>>
lpstat = clr.Reference[int](0)<BR>>>> objval =
clr.Reference[float](0)<BR>>>> x =
clr.Reference[System.Array[float]](System.Array[float]((0,0,0)))<BR>>>>
pi =
clr.Reference[System.Array[float]](System.Array[float]((0,0,0)))<BR>>>>
sl =
clr.Reference[System.Array[float]](System.Array[float]((0,0,0)))<BR>>>>
dj =
clr.Reference[System.Array[float]](System.Array[float]((0,0,0)))<BR>>>>
wr.GetResults(lpstat,objval,x,pi,sl,dj)<BR>True<BR>>>>
x<BR><IronPython.Modules.ClrModule+Reference`1[[System.Double[], mscorlib,
Version=2.<BR>0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] object
at 0x0000000000<BR>00002E [Reference(System.Double[])]><BR>>>>
lpstat<BR><IronPython.Modules.ClrModule+Reference`1[[System.Int32,
mscorlib, Version=2.0.0<BR>.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089]] object at 0x0000000000000<BR>02F
[Reference(1)]><BR>>>><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">The
approach I found seems to be more useful if it doesn't have some problem
that<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">would
show up for bigger arrays.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">>>>
wr.GetResults(0,0,(0,0,0),(0,0,0),(0,0,0),(0,0,0))<BR>(True, 1, 13.0,
System.Double[](5.0, 4.0, 0.0), System.Double[](0.0, 0.0, -3.062<BR>5),
System.Double[](0.0, 0.0, 0.0), System.Double[](0.0, 0.0625,
0.375))<o:p></o:p></SPAN></P></DIV>
<BLOCKQUOTE
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none">
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">-----
Original Message ----- <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'"> <A
title=mailto:dinov@exchange.microsoft.com
href="mailto:dinov@exchange.microsoft.com">Dino Viehland</A>
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">To:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'"> <A
title=mailto:users@lists.ironpython.com
href="mailto:users@lists.ironpython.com">Discussion of IronPython</A>
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">Sent:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
Friday, August 25, 2006 5:00 PM<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">Subject:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
Re: [IronPython] c# function that passes arguments by
reference<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'"><o:p> </o:p></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">You
can do:</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">import
System</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">import
clr</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">clr.Reference[System.Array[int]](
System.Array[int]( (1,2,3) ) )</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">This
breaks down into the array creation:</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">System.Array[int](
(1,2,3) )</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">And
then passing that to the new instance of clr.Reference. </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 'Segoe UI','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 'Segoe UI','sans-serif'">
<A title=mailto:users-bounces@lists.ironpython.com
href="mailto:users-bounces@lists.ironpython.com">users-bounces@lists.ironpython.com</A>
[mailto:users-bounces@lists.ironpython.com] <B>On Behalf Of </B>Frank
Kampas<BR><B>Sent:</B> Friday, August 25, 2006 1:43 PM<BR><B>To:</B>
Discussion of IronPython<BR><B>Subject:</B> Re: [IronPython] c# function
that passes arguments by reference</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><SPAN style="COLOR: black"> <o:p></o:p></SPAN></P>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">how
to I create an array to pass by reference? I assume that your example
is creating an integer with a value of 3 to pass by reference.</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<BLOCKQUOTE
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none">
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">-----
Original Message ----- </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
<A title=mailto:dinov@exchange.microsoft.com
href="mailto:dinov@exchange.microsoft.com">Dino Viehland</A> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">To:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
<A title=mailto:users@lists.ironpython.com
href="mailto:users@lists.ironpython.com">Discussion of IronPython</A>
</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">Sent:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
Friday, August 25, 2006 4:06 PM</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">Subject:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
Re: [IronPython] c# function that passes arguments by
reference</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">This
is the “easy” way to call functions that are passing values by
reference. You should be able to pass non-zero values as well as
non-empty arrays. The only thing that should disallow this is if
there were multiple overloads that resulted in an ambiguous method
resolution. </SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">For
these cases there is a generic Reference type defined in the CLR
module. You can use this:</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">import
clr</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">x
= clr.Reference[int](3)</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">someObj.someFunction(x)</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">print
x.Value</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">and
Value will be updated after the call.</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 'Segoe UI','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 'Segoe UI','sans-serif'">
users-bounces@lists.ironpython.com
[mailto:users-bounces@lists.ironpython.com] <B>On Behalf Of </B>Frank
Kampas<BR><B>Sent:</B> Friday, August 25, 2006 12:58 PM<BR><B>To:</B>
users@lists.ironpython.com<BR><B>Subject:</B> [IronPython] c# function
that passes arguments by reference</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><SPAN style="COLOR: black"> <o:p></o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">If
I import a c# function that passes its arguments (integers and
arrays)</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">by
reference, the only way I can get it to work is pass zeroes for the
integers and</SPAN><SPAN style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">arrays
of zero for the arrays. The results for the variables passed
by reference return with the function</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">return.
Is that what is supposed to occur? </SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P></DIV>
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style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Verdana','sans-serif'">_______________________________________________<BR>users
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