annotate tests/each.ur @ 1513:5616b2cbdcdb
Tutorial: hyperlinks for metaprogramming and row types
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Adam Chlipala <adam@chlipala.net> |
| date |
Wed, 20 Jul 2011 08:14:49 -0400 |
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ccf1d445b794 |
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1 sequence s
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2 table t : { Id : int, S1 : string, S2:string, S3:string, S4:string }
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3
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4 fun each (n : int, (f : unit -> transaction unit)) = if n > 0 then f (); each ((n-1),f) else return ()
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5
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6 fun fill () =
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7 dml (DELETE FROM t WHERE 1=1);
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8 each (1,( fn () =>
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9 (nv <- nextval s;
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10 (dml (INSERT INTO t (Id, S1, S2, S3, S4) VALUES ({[nv]}, {["S1"]}, {["S2"]}, {["S3"]}, {["S4"]}))))
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11 ));
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12 return <xml>done</xml>
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13
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14 fun main () = return <xml><body>
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15 <form><submit action={fill} value="fill"/></form>
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16 </body></xml>
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