Ur/Web: tests/updateErr.ur annotate

Monad.mapR3

author	Adam Chlipala <adam@chlipala.net>
date	Sat, 31 Oct 2015 11:49:30 -0400
parents	abb0e95dcaa1
children

rev	line source
adamc@729	1 fun main () : transaction page =
adamc@729	2 s <- source "";
adamc@729	3 b <- Buffer.create;
adamc@729	4 txt <- source "";
adamc@729	5
adamc@729	6 return <xml><body onload={onError (fn xml => Buffer.write b (show xml));
adamc@729	7 onFail (fn s => alert ("FAIL! " ^ s))}>
adamc@729	8 <dyn signal={s <- signal s; return <xml>{[s]}</xml>}/><br/>
adamc@729	9 <dyn signal={s <- signal s; if s = "" then return <xml>Init</xml> else error <xml>Crapky</xml>}/><br/>
adamc@729	10 <dyn signal={s <- signal s; return <xml>"{[s]}"</xml>}/><br/>
adam@1890	11 <button onclick={fn _ => debug "88"}/><br/>
adamc@729	12
adam@1890	13 <ctextbox source={txt}/> <button onclick={fn _ => s' <- get txt; set s s'; set txt ""}/>
adamc@729	14
adamc@729	15 <hr/>
adamc@729	16
adamc@729	17 <dyn signal={Buffer.render b}/>
adamc@729	18 </body></xml>

Mercurial > urweb