view tests/subs_sig.ur @ 1421:3dab4696d116

Subqueries may always return NULL
author Adam Chlipala <adam@chlipala.net>
date Thu, 03 Feb 2011 21:04:12 -0500
parents 71bafe66dbe1
children
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signature S = sig
        type t
end

structure S : S = struct
        type t = int
end