Mercurial > urweb
annotate demo/url.ur @ 1657:2b7d3d99dc42
Prevent unifications of 'others' pieces in record summaries, when both pieces contain unification variables (to prevent undesired unifications)
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Thu, 05 Jan 2012 17:10:43 -0500 |
| parents | 412ccd97ab71 |
| children |
| rev | line source |
|---|---|
| adamc@774 | 1 fun yourChoice r = return <xml><body> |
| adamc@774 | 2 {case checkUrl r.Url of |
| adamc@774 | 3 None => <xml>You aren't allowed to link to there.</xml> |
| adamc@774 | 4 | Some url => <xml><a href={url}>Enjoy!</a></xml>} |
| adamc@774 | 5 </body></xml> |
| adamc@774 | 6 |
| adamc@774 | 7 fun main () = return <xml><body> |
| adamc@774 | 8 <a href="http://en.wikipedia.org/wiki/Type_inference">Learn something</a><br/> |
| adamc@774 | 9 <br/> |
| adamc@774 | 10 <form> |
| adamc@774 | 11 URL of your choice: <textbox{#Url}/> <submit action={yourChoice}/> |
| adamc@774 | 12 </form> |
| adamc@774 | 13 </body></xml> |