Ur/Web: demo/increment.ur annotate

Avoid redundant rollbacks

author	Adam Chlipala <adam@chlipala.net>
date	Sat, 02 Jun 2012 10:54:49 -0400
parents	ed06e25c70ef
children	e6bc6bbd7a32

rev	line source
adamc@648	1 sequence seq
adamc@648	2
adamc@648	3 fun increment () = nextval seq
adamc@648	4
adamc@782	5 fun main () =
adamc@648	6 src <- source 0;
adamc@648	7 return <xml><body>
adamc@648	8 <dyn signal={n <- signal src; return <xml>{[n]}</xml>}/>
adamc@908	9 <button value="Update" onclick={n <- rpc (increment ()); set src n}/>
adamc@648	10 </body></xml>

Mercurial > urweb