view tests/whiteout.ur @ 705:e6706a1df013

Track uniqueness sets in table types
author Adam Chlipala <adamc@hcoop.net>
date Tue, 07 Apr 2009 14:11:32 -0400
parents f0224c7f12bb
children
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table t : { Chan : option (channel unit) }

fun main () : transaction page =
    ch <- channel;
    dml (INSERT INTO t (Chan) VALUES ({[Some ch]}));
    return <xml><body>Did it.</body></xml>