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diff lib/ur/basis.urs @ 1207:ae3036773768

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Introduced the known() predicate
author Adam Chlipala <adamc@hcoop.net>
date Tue, 06 Apr 2010 09:51:36 -0400
parents c316ca3c9ec6
children 648e6b087dfb
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line diff
--- a/lib/ur/basis.urs	Sun Apr 04 17:44:12 2010 -0400
+++ b/lib/ur/basis.urs	Tue Apr 06 09:51:36 2010 -0400
@@ -498,6 +498,7 @@
                 -> sql_ufunc dom ran -> sql_exp tables agg exps dom
                 -> sql_exp tables agg exps ran
 val sql_octet_length : sql_ufunc blob int
+val sql_known : t ::: Type -> sql_ufunc t bool
 
 
 val sql_nullable : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type} -> t ::: Type