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Convert ctype is*() function results to booleans
author Adam Chlipala <adamc@hcoop.net>
date Tue, 08 Dec 2009 12:06:41 -0500
parents 7009b0ac1501
children
line wrap: on
line source
table t : { X : int }

fun main () : transaction page =
    v <- query (SELECT * FROM t)
         (fn r (_ : int) => return (error <xml>Shot down!</xml>))
         0;
    return <xml>Result: {[v]}</xml>