Thanks.<br><br>What does "%3a1" mean?<br><br>Ollie<br><br><div class="gmail_quote">On Sat, Feb 26, 2011 at 1:19 PM, Andreas Rottmann <span dir="ltr"><<a href="mailto:a.rottmann@gmx.at">a.rottmann@gmx.at</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">Sam Tobin-Hochstadt <<a href="mailto:samth@ccs.neu.edu">samth@ccs.neu.edu</a>> writes:<br>
<br>
> I recommend just using plain Racket, instead of the R5RS language.<br>
> Choose "Use the language declared in the source" in the Language<br>
> dialog.<br>
><br>
</div>If you want to stay in R5RS, you could use the R6RS version of SRFI 1,<br>
which uses mutable lists:<br>
<br>
(#%require (lib "srfi/%3a1"))<br>
<div class="im">(null-list? '(1 2 3))<br>
<br>
</div>Regards, Rotty<br>
<font color="#888888">--<br>
Andreas Rottmann -- <<a href="http://rotty.yi.org/" target="_blank">http://rotty.yi.org/</a>><br>
</font></blockquote></div><br>