Mercurial > urweb
diff lib/ur/list.ur @ 1191:61c3139eab12
Subquery expressions
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Thu, 25 Mar 2010 15:44:24 -0400 |
| parents | 52571ca9b777 |
| children | 4c367c8f5b2d |
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--- a/lib/ur/list.ur Thu Mar 25 13:04:49 2010 -0400 +++ b/lib/ur/list.ur Thu Mar 25 15:44:24 2010 -0400 @@ -244,7 +244,7 @@ end fun mapQuery [tables ::: {{Type}}] [exps ::: {Type}] [t ::: Type] - [tables ~ exps] (q : sql_query tables exps) + [tables ~ exps] (q : sql_query [] tables exps) (f : $(exps ++ map (fn fields :: {Type} => $fields) tables) -> t) = ls <- query q (fn fs acc => return (f fs :: acc)) @@ -252,7 +252,7 @@ return (rev ls) fun mapQueryM [tables ::: {{Type}}] [exps ::: {Type}] [t ::: Type] - [tables ~ exps] (q : sql_query tables exps) + [tables ~ exps] (q : sql_query [] tables exps) (f : $(exps ++ map (fn fields :: {Type} => $fields) tables) -> transaction t) = ls <- query q (fn fs acc => v <- f fs; return (v :: acc)) @@ -260,7 +260,7 @@ return (rev ls) fun mapQueryPartialM [tables ::: {{Type}}] [exps ::: {Type}] [t ::: Type] - [tables ~ exps] (q : sql_query tables exps) + [tables ~ exps] (q : sql_query [] tables exps) (f : $(exps ++ map (fn fields :: {Type} => $fields) tables) -> transaction (option t)) = ls <- query q (fn fs acc => v <- f fs;