Mercurial > urweb
annotate tests/option.ur @ 478:6ee1c761818f
Some small changes while failing to write [restrict]
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 08 Nov 2008 13:15:00 -0500 |
parents | 77a28e7430bf |
children |
rev | line source |
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adamc@198 | 1 datatype option a = None | Some of a |
adamc@198 | 2 |
adamc@198 | 3 val none_Hi : option string = None |
adamc@198 | 4 val some_Hi = Some "Hi" |
adamc@198 | 5 val none_some_Hi : option (option string) = None |
adamc@198 | 6 val some_some_Hi = Some some_Hi |
adamc@198 | 7 |
adamc@198 | 8 val show = fn x => case x of None => "None" | Some x => x |
adamc@198 | 9 |
adamc@198 | 10 val show2 = fn x => case x of None => "None'" | Some x => show x |
adamc@198 | 11 |
adamc@284 | 12 val page = fn x => return <html><body> |
adamc@198 | 13 {cdata (show x)} |
adamc@198 | 14 </body></html> |
adamc@198 | 15 |
adamc@284 | 16 val page2 = fn x => return <html><body> |
adamc@198 | 17 {cdata (show2 x)} |
adamc@198 | 18 </body></html> |
adamc@198 | 19 |
adamc@284 | 20 val main : unit -> transaction page = fn () => return <html><body> |
adamc@198 | 21 <li><a link={page none_Hi}>None1</a></li> |
adamc@198 | 22 <li><a link={page some_Hi}>Some1</a></li> |
adamc@198 | 23 <li><a link={page2 none_some_Hi}>None2</a></li> |
adamc@198 | 24 <li><a link={page2 some_some_Hi}>Some2</a></li> |
adamc@198 | 25 </body></html> |