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Interpret 'table' signature items more flexibly, automatically adding (Ur) constraints to support a kind of subtyping over (SQL) constraint sets
author Adam Chlipala <adam@chlipala.net>
date Mon, 04 Nov 2013 15:14:23 -0500
parents dd12d6d9e9a7
children
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fun main [r] (r : $([A = int] ++ ([B = float] ++ r))) : $([A = float] ++ ([B = int] ++ r)) = r