view tests/rpc.ur @ 639:9da62680adc5

RPC returning an option datatype
author Adam Chlipala <adamc@hcoop.net>
date Sun, 08 Mar 2009 12:54:07 -0400
parents 56aaa1941dad
children
line wrap: on
line source
sequence s

fun main () : transaction page =
    let
        fun getNext () = nextval s
    in
        s <- source 0;
        return <xml><body>
          <button value="Get It On!"
                  onclick={n <- getNext ();
                           set s n}/><br/>
          <br/>
          Current: <dyn signal={n <- signal s; return <xml>{[n]}</xml>}/>
        </body></xml>
    end