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view tests/open_functor.ur @ 1394:d328983dc5a6
Allow subqueries to reference aggregate-only columns of free tables; treat non-COUNT aggregate functions as possibly returning NULL
author | Adam Chlipala <adam@chlipala.net> |
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date | Sat, 15 Jan 2011 14:53:13 -0500 |
parents | 71bafe66dbe1 |
children |
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signature S = sig type t val x : t end functor F (M : S) : S where type t = M.t = struct type t = M.t val x = M.x end structure M = F(struct type t = int val x = 0 end) open M