Mercurial > urweb

view demo/url.ur @ 1346:faad7d01b200

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Restore behavior of not complaining about undetermined unification variables when there are other errors
author Adam Chlipala <adam@chlipala.net>
date Thu, 16 Dec 2010 18:40:49 -0500
parents 412ccd97ab71
children
line wrap: on
line source
fun yourChoice r = return <xml><body>
  {case checkUrl r.Url of
       None => <xml>You aren't allowed to link to there.</xml>
     | Some url => <xml><a href={url}>Enjoy!</a></xml>}
</body></xml>

fun main () = return <xml><body>
  <a href="http://en.wikipedia.org/wiki/Type_inference">Learn something</a><br/>
  <br/>
  <form>
    URL of your choice: <textbox{#Url}/> <submit action={yourChoice}/>
  </form>
</body></xml>