Ur/Web: demo/increment.ur annotate

Monadic bind supports patterns

author	Adam Chlipala <adam@chlipala.net>
date	Fri, 02 May 2014 17:16:02 -0400
parents	e6bc6bbd7a32
children

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>}/>
adam@1784	9 <button value="Update" onclick={fn _ => n <- rpc (increment ()); set src n}/>
adamc@648	10 </body></xml>

Mercurial > urweb