<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div><div>Absolutely! </div><br><div><div>On Aug 17, 2012, at 4:02 PM, Patrick Mahoney wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">I like the idea of having optional keyword arguments available in struct field construction. In many cases, I find it more declarative upon reading the code, though input takes longer. I just tend to recall names better than constructor/argument order. It could help to understand the code if the struct declaration is located further away from the site of struct construction as well, especially if there is a different problem in the source that prevents syntax colouring from succeeding and thus the handy DrRacket file and module navigation from being available :)<br> <br>-Patrick<br><br><div class="gmail_quote">On 17 August 2012 14:52, Danny Yoo <span dir="ltr"><<a href="mailto:dyoo@hashcollision.org" target="_blank">dyoo@hashcollision.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="im"><br><br>On Friday, August 17, 2012, Rouben Rostamian wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Is there the equivalent of Common Lisp's /structure/ type in<br> Racket?  I looked through Racket's User Guide and Reference<br> manuals but did not see something similar, although it's<br> quite possible that I saw one but did not recognize it.<br><br></blockquote><div><span><br></span></div></div><div><span dir="ltr">Racket's default structure constructors are functions with positional arguments.  </span><span>Racket does support functions with optional keyword arguments,</span><div> </div><div><br>    <a href="http://docs.racket-lang.org/guide/lambda.html#%28part._lambda-keywords%29" target="_blank">http://docs.racket-lang.org/guide/lambda.html#(part._lambda-keywords)</a></div><div><br></div><div>so it should be technically possble to do what Common Lisp does here.  Other responses to this thread show some macros to autogenerate a helper function that uses keyword arguments.<span></span></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><br> ____________________<br>  Racket Users list:<br>  <a href="http://lists.racket-lang.org/users">http://lists.racket-lang.org/users</a><br></blockquote></div><br></body></html>