Mercurial > urweb
view demo/increment.ur @ 1580:ec466c1e082a
Catch UnboundNamed exceptions that arise from missing signature items
author | Adam Chlipala <adam@chlipala.net> |
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date | Fri, 21 Oct 2011 08:51:30 -0400 |
parents | ed06e25c70ef |
children | e6bc6bbd7a32 |
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sequence seq fun increment () = nextval seq fun main () = src <- source 0; return <xml><body> <dyn signal={n <- signal src; return <xml>{[n]}</xml>}/> <button value="Update" onclick={n <- rpc (increment ()); set src n}/> </body></xml>