Mercurial > urweb
diff tests/query.ur @ 244:71bafe66dbe1
Laconic -> Ur
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Sun, 31 Aug 2008 08:32:18 -0400 |
parents | tests/query.lac@2b9dfaffb008 |
children | b6b75e6e0898 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/query.ur Sun Aug 31 08:32:18 2008 -0400 @@ -0,0 +1,16 @@ +table t1 : {A : int, B : string, C : float} +table t2 : {A : float, D : int} + +datatype list a = Nil | Cons of a * list a + +val q1 = (SELECT * FROM t1) +val r1 : transaction (list {A : int, B : string, C : float}) = + query q1 + (fn fs _ acc => return (Cons (fs.T1, acc))) + Nil + +val r2 : transaction int = + ls <- r1; + return (case ls of + Nil => 0 + | Cons ({A = a, ...}, _) => a)