<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#ffffff"> I have a function which, at the moment, is performing manual dispatch: <tt>     (cond ((something1? e) (go-1 s))            ((something2? e) (go-2 s))            (...))</tt> Do you have any suggestions on how to avoid this manual dispatch? José Lopes On 04-04-2011 16:29, Shriram Krishnamurthi wrote: <blockquote cite="mid:BANLkTikiSg_-bfE3yerNOXm0gQJHXwX7_Q@mail.gmail.com" type="cite"> Approximate our reconstruct? -- Pardon terseness and mistakes -- sent from phone. <div class="gmail_quote">On Apr 4, 2011 11:24 AM, "Matthias Felleisen" <<a moz-do-not-send="true" href="mailto:matthias@ccs.neu.edu">matthias@ccs.neu.edu</a>> wrote: > > Types are compile-time entities. They don't exist at run-time, so you can't query them at run-time. > > If you mean the type-tags of objects, we don't provide direct access. You can approximate it ... > > -- Matthias > > > > > > > > On Apr 4, 2011, at 11:18 AM, José Lopes wrote: > >> Hello, >> >> How do I query the type of an expression? >> >> Regards, >> José Lopes >> >> -- >> José António Branquinho de Oliveira Lopes >> 58612 - MEIC-A >> <a moz-do-not-send="true" href="mailto:jose.lopes@ist.utl.pt">jose.lopes@ist.utl.pt</a> >> >> _________________________________________________ >> For list-related administrative tasks: >> <a moz-do-not-send="true" href="http://lists.racket-lang.org/listinfo/users">http://lists.racket-lang.org/listinfo/users</a> > > > _________________________________________________ > For list-related administrative tasks: > <a moz-do-not-send="true" href="http://lists.racket-lang.org/listinfo/users">http://lists.racket-lang.org/listinfo/users</a> </div> </blockquote> <pre class="moz-signature" cols="72">-- José António Branquinho de Oliveira Lopes 58612 - MEIC-A <a class="moz-txt-link-abbreviated" href="mailto:jose.lopes@ist.utl.pt">jose.lopes@ist.utl.pt</a> </pre> </body> </html>