Alvin, 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:
1. Use a site like pastebin.com or gist.github.com where you can easily paste and share a file without copying an attachment to many people's inboxes over a mailing list. 2. Include all necessary files, or better yet reduce the example to one file. 3. Similarly, reduce dependencies on third-party libraries such as planet packages if possible. 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. Carl Eastlund On Wed, Sep 4, 2013 at 10:22 PM, Alvin Schatte <[email protected]>wrote: > Hello Carl, > 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. > Thank you again for your help, > Alvin Schatte > > *From:* Carl Eastlund <[email protected]> > *Sent:* Wednesday, September 04, 2013 9:06 PM > *To:* Alvin Schatte <[email protected]> > *Cc:* Racket Users <[email protected]> > *Subject:* Re: [racket] Question on error message > > Alvin, > > 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. > > Carl Eastlund > > On Wed, Sep 4, 2013 at 9:59 PM, Alvin Schatte <[email protected]>wrote: > >> Hello, >> I got the following error message after <Ctrl-R> in Dr. Racket. I am not >> sure what it means: >> >> module: duplicate definition for identifier in: lifted.171 >> >> Could someone explain it to me? >> Alvin Schatte >> >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users >> >> > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2013.0.3392 / Virus Database: 3222/6639 - Release Date: 09/04/13 >
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