On 2017-01-22 17:56, Gabriel Gonzalez wrote: > The only thing I would add to Daniel's answer is that you can use the > `managed` library to simplify the type a little bit to: > > query' :: Text -> [SqlValue] -> Managed (Maybe Int, Producer > [SqlValue] IO ()) >
Ah, thanks, I'll have a look at managed too. > Also, since you aren't using the return value of the `Producer`, you can > simplify it even further by using `ListT`: > > query' :: Text -> [SqlValue] -> Managed (Maybe Int, ListT IO [SqlValue]) > > It's not clear to me, though, why each read from the database returns a > list of `SqlValue`s, though Oh, that's just because SqlValue is a the value in a single column, so [SqlValue] is the full row. (I have no need for anything more fancy to map rows to data structures.) Thanks for the suggestions Gabriel and Daniel. Regards, -- You received this message because you are subscribed to the Google Groups "Haskell Pipes" group. To unsubscribe from this group and stop receiving emails from it, send an email to haskell-pipes+unsubscr...@googlegroups.com. To post to this group, send email to haskell-pipes@googlegroups.com.
