Safe Haskell	None
Language	Haskell2010

HieDb

Synopsis

Documentation

data h :. t infixr 3 #

A composite type to parse your custom data structures without having to define dummy newtype wrappers every time.

instance FromRow MyData where ...

instance FromRow MyData2 where ...

then I can do the following for free:

res <- query' c "..."
forM res $ \(MyData{..} :. MyData2{..}) -> do
  ....

Constructors

h :. t infixr 3

Instances details

(Eq h, Eq t) => Eq (h :. t)
Instance details Defined in Database.SQLite.Simple.Types Methods (==) :: (h :. t) -> (h :. t) -> Bool # (/=) :: (h :. t) -> (h :. t) -> Bool #
(Ord h, Ord t) => Ord (h :. t)
Instance details Defined in Database.SQLite.Simple.Types Methods compare :: (h :. t) -> (h :. t) -> Ordering # (<) :: (h :. t) -> (h :. t) -> Bool # (<=) :: (h :. t) -> (h :. t) -> Bool # (>) :: (h :. t) -> (h :. t) -> Bool # (>=) :: (h :. t) -> (h :. t) -> Bool # max :: (h :. t) -> (h :. t) -> h :. t # min :: (h :. t) -> (h :. t) -> h :. t #
(Read h, Read t) => Read (h :. t)
Instance details Defined in Database.SQLite.Simple.Types Methods readsPrec :: Int -> ReadS (h :. t) # readList :: ReadS [h :. t] # readPrec :: ReadPrec (h :. t) # readListPrec :: ReadPrec [h :. t] #
(Show h, Show t) => Show (h :. t)
Instance details Defined in Database.SQLite.Simple.Types Methods showsPrec :: Int -> (h :. t) -> ShowS # show :: (h :. t) -> String # showList :: [h :. t] -> ShowS #
(FromRow a, FromRow b) => FromRow (a :. b)
Instance details Defined in Database.SQLite.Simple.FromRow Methods fromRow :: RowParser (a :. b) #
(ToRow a, ToRow b) => ToRow (a :. b)
Instance details Defined in Database.SQLite.Simple.ToRow Methods toRow :: (a :. b) -> [SQLData] #