Safe Haskell | None |
---|---|
Language | Haskell98 |
Hakyll.Core.Metadata
- 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
lookupString :: String -> Metadata -> Maybe String
lookupStringList :: String -> Metadata -> Maybe [String]
class Monad m => MonadMetadata m where
Minimal complete definition
Methods
getMetadata :: Identifier -> m Metadata
getMatches :: Pattern -> m [Identifier]
getAllMetadata :: Pattern -> m [(Identifier, Metadata)]
Instances
getMetadataField :: MonadMetadata m => Identifier -> String -> m (Maybe String)
getMetadataField' :: MonadMetadata m => Identifier -> String -> m String
Version of getMetadataField
which throws an error if the field does not
exist.
makePatternDependency :: MonadMetadata m => Pattern -> m Dependency