Mercurial > urweb
annotate tests/datatypeP2.ur @ 2074:e48e09a1f583
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| author | Sergey Mironov <grrwlf@gmail.com> |
|---|---|
| date | Sun, 12 Oct 2014 10:03:36 +0000 |
| parents | 71bafe66dbe1 |
| children |
| rev | line source |
|---|---|
| adamc@194 | 1 datatype sum a b = Left of a | Right of b |
| adamc@194 | 2 |
| adamc@194 | 3 val l : sum int string = Left 5 |
| adamc@194 | 4 val r : sum int string = Right "Hi" |
| adamc@194 | 5 |
| adamc@194 | 6 val show = fn x : sum int string => case x of Left _ => "Left _" | Right s => s |
| adamc@194 | 7 |
| adamc@194 | 8 val page = fn x => <html><body> |
| adamc@194 | 9 {cdata (show x)} |
| adamc@194 | 10 </body></html> |
| adamc@194 | 11 |
| adamc@194 | 12 val main : unit -> page = fn () => <html><body> |
| adamc@194 | 13 <li><a link={page l}>Left</a></li> |
| adamc@194 | 14 <li><a link={page r}>Right</a></li> |
| adamc@194 | 15 </body></html> |