Safe Haskell	Safe
Language	Haskell98

Propellor.Types.ConfigurableValue

Synopsis

Documentation

class ConfigurableValue t where Source #

A value that can be used in a configuration file, or otherwise used to configure a program.

Unlike Show, there should only be instances of this type class for values that have a standard serialization that is understood outside of Haskell code.

When converting a type alias such as "type Foo = String" or "type Foo = Int" to a newtype, it's unsafe to derive a Show instance, because there may be code that shows the type to configure a value. Instead, define a ConfigurableValue instance.

Minimal complete definition

val

Methods

val :: t -> String Source #

Instances

ConfigurableValue Double Source #
Methods val :: Double -> String Source #
ConfigurableValue Float Source #
Methods val :: Float -> String Source #
ConfigurableValue Int Source #
Methods val :: Int -> String Source #
ConfigurableValue Integer Source #
Methods val :: Integer -> String Source #
ConfigurableValue Word8 Source #
Methods val :: Word8 -> String Source #
ConfigurableValue Word16 Source #
Methods val :: Word16 -> String Source #
ConfigurableValue Word32 Source #
Methods val :: Word32 -> String Source #
ConfigurableValue String Source #	val String does not do any quoting, unlike show String
Methods val :: String -> String Source #
ConfigurableValue Port Source #
Methods val :: Port -> String Source #
ConfigurableValue Group Source #
Methods val :: Group -> String Source #
ConfigurableValue User Source #
Methods val :: User -> String Source #
ConfigurableValue FBSDVersion Source #
Methods val :: FBSDVersion -> String Source #
ConfigurableValue IPAddr Source #
Methods val :: IPAddr -> String Source #
ConfigurableValue ZDataset Source #
Methods val :: ZDataset -> String Source #
ConfigurableValue AptSource Source #
Methods val :: AptSource -> String Source #
ConfigurableValue PPA Source #
Methods val :: PPA -> String Source #
ConfigurableValue Frequency Source #
Methods val :: Frequency -> String Source #
ConfigurableValue ICMPTypeMatch Source #
Methods val :: ICMPTypeMatch -> String Source #
ConfigurableValue Chain Source #
Methods val :: Chain -> String Source #
ConfigurableValue Target Source #
Methods val :: Target -> String Source #
ConfigurableValue Table Source #
Methods val :: Table -> String Source #
ConfigurableValue IPWithMask Source #
Methods val :: IPWithMask -> String Source #
ConfigurableValue ReportLevel Source #
Methods val :: ReportLevel -> String Source #
ConfigurableValue ResticRepo Source #
Methods val :: ResticRepo -> String Source #
ConfigurableValue PoudriereArch Source #
Methods val :: PoudriereArch -> String Source #