<div dir="ltr"><div><div><div><div>Alvin,<br><br></div>Thanks for the source. Unfortunately, I can't run what you sent because it's missing at least one file. Try the following when sharing code for debugging purposes:<br>
<br></div><div>1. Use a site like <a href="http://pastebin.com">pastebin.com</a> or <a href="http://gist.github.com">gist.github.com</a> where you can easily paste and share a file without copying an attachment to many people's inboxes over a mailing list.<br>
</div><div>2. Include all necessary files, or better yet reduce the example to one file.<br></div><div>3. Similarly, reduce dependencies on third-party libraries such as planet packages if possible.<br><br></div><div>Right now I'm missing "diff-e solver.rkt" and I have to install "wmfarr/simple-matrix:1:1", which is doable but inconvenient. Thanks for the question and followup, and I'm happy to help if you can post a complete example.<br>
</div></div></div><br clear="all"><div class="gmail_extra"><div>Carl Eastlund</div>
<br><div class="gmail_quote">On Wed, Sep 4, 2013 at 10:22 PM, Alvin Schatte <span dir="ltr"><<a href="mailto:AlvinSchatte@skytex.net" target="_blank">AlvinSchatte@skytex.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
<div style="font-size:12pt;font-family:'Calibri'">
<div>Hello Carl,</div>
<div>Thank you for looking at this. I am writing contracts and playing
with documentation for a fairly large module that, right now, performs a system
identification function. The file is attached. I made several
changes without “Run”ning, so I’m not sure what changed caused the error.</div>
<div>Thank you again for your help,</div>
<div style="font-size:12pt;font-family:'Calibri'">Alvin
Schatte<br></div>
<div style="font-style:normal;font-size:small;display:inline;text-decoration:none;font-family:'Calibri';font-weight:normal">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="cce@ccs.neu.edu" href="mailto:cce@ccs.neu.edu" target="_blank">Carl Eastlund</a> </div>
<div><b>Sent:</b> Wednesday, September 04, 2013 9:06 PM</div>
<div><b>To:</b> <a title="AlvinSchatte@skytex.net" href="mailto:AlvinSchatte@skytex.net" target="_blank">Alvin Schatte</a> </div>
<div><b>Cc:</b> <a title="users@racket-lang.org" href="mailto:users@racket-lang.org" target="_blank">Racket Users</a> </div>
<div><b>Subject:</b> Re: [racket] Question on error message</div></div></div>
<div> </div></div>
<div style="font-style:normal;font-size:small;display:inline;text-decoration:none;font-family:'Calibri';font-weight:normal"><div><div class="h5">
<div dir="ltr">
<div>Alvin,<br><br></div>That looks like an internal error message from some
language feature you're using, unless you're using something like begin-lifted
or syntax-local-lift-expression directly. Often the contract system
generates names for internal use like "lifted.171", but there shouldn't be
duplicate definitions, and if there are, it's likely not your fault. Can
you share the code that causes this error message? If so, someone may be
able to diagnose the error. Otherwise, with just the error message, we
don't have much to go on.<br>
<div class="gmail_extra">
<div> </div>
<div>Carl Eastlund</div>
<div> </div>
<div class="gmail_quote">On Wed, Sep 4, 2013 at 9:59 PM, Alvin Schatte <span dir="ltr"><<a href="mailto:AlvinSchatte@skytex.net" target="_blank">AlvinSchatte@skytex.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri'">
<div>Hello,</div>
<div>I got the following error message after <Ctrl-R> in Dr.
Racket. I am not sure what it means:</div>
<div> </div>
<div>module: duplicate definition for identifier in: lifted.171</div>
<div> </div>
<div>Could someone explain it to me?</div><span><font color="#888888">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri'">Alvin
Schatte<br></div></font></span></div></div></div><br>____________________<br>
Racket Users list:<br> <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a><br><br></blockquote></div>
<div> </div></div></div><a></a>
</div></div><p color="#000000" align="left">No virus found in this
message.<br>Checked by AVG - <a href="http://www.avg.com" target="_blank">www.avg.com</a><br>Version: 2013.0.3392 / Virus
Database: 3222/6639 - Release Date: 09/04/13</p></div></div></div></div>
</blockquote></div><br></div></div>