Safe Haskell	Safe
Language	Haskell2010

Conferer.FetchFromConfig.Basics

Contents

Orphan instances

Synopsis

fetchFromConfigByRead :: (Typeable a, Read a) => Key -> Config -> IO (Maybe a)
fromValueWith :: (Text -> Maybe a) -> Text -> Maybe a
fetchFromConfigWith :: forall a. Typeable a => (Text -> Maybe a) -> Key -> Config -> IO (Maybe a)
findKeyAndApplyConfig :: forall newvalue config. FetchFromConfig newvalue => Config -> Key -> Key -> (newvalue -> config -> config) -> config -> IO config
class UpdateFromConfigWithConNameG f where
- updateFromConfigWithConNameG :: String -> Key -> Config -> f a -> IO (f a)

Documentation

fetchFromConfigByRead :: (Typeable a, Read a) => Key -> Config -> IO (Maybe a) Source #

fromValueWith :: (Text -> Maybe a) -> Text -> Maybe a Source #

fetchFromConfigWith :: forall a. Typeable a => (Text -> Maybe a) -> Key -> Config -> IO (Maybe a) Source #

findKeyAndApplyConfig Source #

Arguments

:: FetchFromConfig newvalue
=> Config	Complete config
-> Key	Key that indicates the part of the config that we care about
-> Key	Key that we use to find the config (usually concatenating with the other key)
-> (newvalue -> config -> config)	Function that knows how to use the value to update the config
-> config	Result of the last config updating
-> IO config	Updated config

Concatenate many transformations to the config based on keys and functions

class UpdateFromConfigWithConNameG f where Source #

Methods

updateFromConfigWithConNameG :: String -> Key -> Config -> f a -> IO (f a) Source #

Instances

(UpdateFromConfigWithConNameG left, UpdateFromConfigWithConNameG right) => UpdateFromConfigWithConNameG (left :*: right) Source #
Instance details Defined in Conferer.FetchFromConfig.Basics Methods updateFromConfigWithConNameG :: String -> Key -> Config -> (left :: right) a -> IO ((left :: right) a) Source #
(UpdateFromConfigG inner, Selector selector) => UpdateFromConfigWithConNameG (S1 selector inner) Source #
Instance details Defined in Conferer.FetchFromConfig.Basics Methods updateFromConfigWithConNameG :: String -> Key -> Config -> S1 selector inner a -> IO (S1 selector inner a) Source #

Orphan instances

FetchFromConfig Bool Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe Bool) Source #
FetchFromConfig Float Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe Float) Source #
FetchFromConfig Int Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe Int) Source #
FetchFromConfig Integer Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe Integer) Source #
FetchFromConfig String Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe String) Source #
FetchFromConfig ByteString Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe ByteString) Source #
FetchFromConfig Text Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe Text) Source #
FetchFromConfig a => FetchFromConfig (Maybe a) Source #
Instance details Methods fetch :: Key -> Config -> IO (Maybe (Maybe a)) Source #
FetchFromConfig inner => UpdateFromConfigG (Rec0 inner) Source #	Purely `Generics` machinery, ignore...
Instance details Methods updateFromConfigG :: Key -> Config -> Rec0 inner a -> IO (Rec0 inner a) Source #
UpdateFromConfigG inner => UpdateFromConfigG (D1 metadata inner) Source #
Instance details Methods updateFromConfigG :: Key -> Config -> D1 metadata inner a -> IO (D1 metadata inner a) Source #
(UpdateFromConfigWithConNameG inner, Constructor constructor) => UpdateFromConfigG (C1 constructor inner) Source #
Instance details Methods updateFromConfigG :: Key -> Config -> C1 constructor inner a -> IO (C1 constructor inner a) Source #