Safe Haskell | None |
---|---|
Language | Haskell98 |
- type Metadata = Object
- lookupString :: String -> Metadata -> Maybe String
- lookupStringList :: String -> Metadata -> Maybe [String]
- class Monad m => MonadMetadata m where
- getMetadata :: Identifier -> m Metadata
- getMatches :: Pattern -> m [Identifier]
- getAllMetadata :: Pattern -> m [(Identifier, Metadata)]
- getMetadataField :: MonadMetadata m => Identifier -> String -> m (Maybe String)
- getMetadataField' :: MonadMetadata m => Identifier -> String -> m String
- makePatternDependency :: MonadMetadata m => Pattern -> m Dependency
- newtype BinaryMetadata = BinaryMetadata {}
Documentation
class Monad m => MonadMetadata m where Source
getMetadata :: Identifier -> m Metadata Source
getMatches :: Pattern -> m [Identifier] Source
getAllMetadata :: Pattern -> m [(Identifier, Metadata)] Source
getMetadataField :: MonadMetadata m => Identifier -> String -> m (Maybe String) Source
getMetadataField' :: MonadMetadata m => Identifier -> String -> m String Source
Version of getMetadataField
which throws an error if the field does not
exist.
makePatternDependency :: MonadMetadata m => Pattern -> m Dependency Source
newtype BinaryMetadata Source
Newtype wrapper for serialization.