I like the ListT suggestion and just implemented it. I don't understand how I can get rid of SafeT by using Managed. You're talking about Managed from your managed package right?
On 30 July 2017 at 15:58, Gabriel Gonzalez <[email protected]> wrote: > Looks pretty straightforward to me > > The only other suggestion I'd provide is to also provide a `Managed` > version of the same `Producer`, with this type: > > query > :: (Default QueryRunner columns haskells, MonadIO m, MonadMask m) > => Connection -> Query columns -> Managed (Producer haskells m ()) > > Also, since it doesn't use the return value, you could even use the > simpler `ListT` type instead: > > query > :: (Default QueryRunner columns haskells, MonadIO m, MonadMask m) > => Connection -> Query columns -> Managed (ListT m haskells) > > ... and then you can always convert that back to a `Producer` using > `enumerate` if necessary > > On Jul 29, 2017, at 2:54 PM, Bas van Dijk <[email protected]> wrote: > > Hello, > > I just started playing with pipes and I really like it so far. For my > first project I would like to create a Producer for opaleye query results. > I came up with the following: > > https://github.com/basvandijk/pipes-opaleye/blob/ > master/src/Pipes/Opaleye/RunQuery.hs > > Is that the correct way of doing it? What can be improved? > > Thanks, > > Bas > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > -- 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 [email protected]. To post to this group, send email to [email protected].
