This code is not in a module.  It is an example in the science collection.<br><br><div class="gmail_quote">On Wed, Jan 30, 2008 at 2:38 PM, Robby Findler <<a href="mailto:robby@cs.uchicago.edu">robby@cs.uchicago.edu</a>> wrote:<br> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="Wj3C7c">On Jan 30, 2008 2:34 PM, Doug Williams <<a href="mailto:m.douglas.williams@gmail.com">m.douglas.williams@gmail.com</a>> wrote:<br> > I remember some discussion that in V4 (if ...) with no else part was going<br> > to be illegal.  I had forgotten about it until I tried running some of my<br> > code in MzScheme <a href="http://3.99.0.9" target="_blank">3.99.0.9</a> and it failed because of 'if: bad syntax (must<br> > have an "else" expression)'.  However, it runs in DrScheme <a href="http://3.99.0.9" target="_blank">3.99.0.9</a>.  I<br> > guess we need to track down all such constructs if we want people to be able<br> > to use our code in MzScheme.<br> ><br> > What other constructs might bite us?<br> ><br> > Why do I get different behavior in DrScheme and MzScheme on this?<br> ><br> > Why does it load and compile okay with PLanet?<br> <br> </div></div>There are multiple "if"s around -- it is only the "scheme" language<br> that has the new if.<br> <br> So, I guess the question I have is: what language were you using? And:<br> was your program in a module?<br> <font color="#888888"><br> Robby<br> </font></blockquote></div><br>