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Within LTS Haskell 24.20 (ghc-9.10.3)
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(
>. ) :: forall v typ . PersistField typ => EntityField v typ -> typ -> Filter vpersistent Database.Persist Greater-than check.
Examples
selectGreaterAge :: MonadIO m => ReaderT SqlBackend m [Entity User] selectGreaterAge = selectList [UserAge >. 40 ] []
The above query when applied on dataset-1, will produce this:+-----+-----+-----+ |id |name |age | +-----+-----+-----+ |2 |Simon|41 | +-----+-----+-----+
(
>=. ) :: forall v typ . PersistField typ => EntityField v typ -> typ -> Filter vpersistent Database.Persist Greater-than or equal check.
Examples
selectGreaterEqualAge :: MonadIO m => ReaderT SqlBackend m [Entity User] selectGreaterEqualAge = selectList [UserAge >=. 41 ] []
The above query when applied on dataset-1, will produce this:+-----+-----+-----+ |id |name |age | +-----+-----+-----+ |2 |Simon|41 | +-----+-----+-----+
(
||. ) :: [Filter v] -> [Filter v] -> [Filter v]persistent Database.Persist The OR of two lists of filters. For example:
selectList ([ PersonAge >. 25 , PersonAge <. 30 ] ||. [ PersonIncome >. 15000 , PersonIncome <. 25000 ]) []
will filter records where a person's age is between 25 and 30 or a person's income is between (15000 and 25000). If you are looking for an (&&.) operator to do (A AND B AND (C OR D)) you can use the (++) operator instead as there is no (&&.). For example:selectList ([ PersonAge >. 25 , PersonAge <. 30 ] ++ ([PersonCategory ==. 1] ||. [PersonCategory ==. 5])) []
will filter records where a person's age is between 25 and 30 and (person's category is either 1 or 5).(
>.> ) :: (a -> b) -> (b -> c) -> a -> cghc GHC.Core.Map.Expr No documentation available.
(
>.> ) :: (a -> b) -> (b -> c) -> a -> cghc GHC.Data.TrieMap No documentation available.
(
<.> ) :: HsWrapper -> HsWrapper -> HsWrapperghc GHC.Tc.Types.Evidence No documentation available.
(
-<.> ) :: MonadThrow m => Path b File -> PosixString -> m (Path b File)path OsPath.Posix Deprecated: Please use replaceExtension instead.
(
<.> ) :: MonadThrow m => Path b File -> PosixString -> m (Path b File)path OsPath.Posix Deprecated: Please use addExtension instead.
(
-<.> ) :: MonadThrow m => Path b File -> WindowsString -> m (Path b File)path OsPath.Windows Deprecated: Please use replaceExtension instead.
(
<.> ) :: MonadThrow m => Path b File -> WindowsString -> m (Path b File)path OsPath.Windows Deprecated: Please use addExtension instead.