Ur/Web: tests/each.ur annotate

Module system tutorial

author	Adam Chlipala <adam@chlipala.net>
date	Sat, 16 Jul 2011 11:48:11 -0400
parents	ccf1d445b794
children

rev	line source
adam@1355	1 sequence s
adam@1355	2 table t : { Id : int, S1 : string, S2:string, S3:string, S4:string }
adam@1355	3
adam@1355	4 fun each (n : int, (f : unit -> transaction unit)) = if n > 0 then f (); each ((n-1),f) else return ()
adam@1355	5
adam@1355	6 fun fill () =
adam@1355	7 dml (DELETE FROM t WHERE 1=1);
adam@1355	8 each (1,( fn () =>
adam@1355	9 (nv <- nextval s;
adam@1355	10 (dml (INSERT INTO t (Id, S1, S2, S3, S4) VALUES ({[nv]}, {["S1"]}, {["S2"]}, {["S3"]}, {["S4"]}))))
adam@1355	11 ));
adam@1355	12 return <xml>done</xml>
adam@1355	13
adam@1355	14 fun main () = return <xml><body>
adam@1355	15 <form><submit action={fill} value="fill"/></form>
adam@1355	16 </body></xml>

Mercurial > urweb