PowerDNS.Internal.Utils

Documentation

strip :: Eq a => [a] -> [a] -> [a]

A variant of stripPrefix that defaults to id if the prefix is not found.

map1 :: (a -> a) -> [a] -> [a]

Version of map that applies the function to the first element only

class Empty a where

Typeclass of things we can generate empty values of. This is used to quickly build values from parameters to PowerDNS, because you often only need a few fields. empty { someField = Just 1 , otherField = Just "foo" }

Minimal complete definition

Nothing

Methods

empty :: a

Produce an empty value

default empty :: (Generic a, GEmpty (Rep a)) => a

Instances

Empty Comment

Defined in PowerDNS.API.Zones

Methods

empty :: Comment

Empty Zone

Defined in PowerDNS.API.Zones

Methods

empty :: Zone

Empty Server

Defined in PowerDNS.API.Servers

Methods

empty :: Server

Empty Cryptokey

Defined in PowerDNS.API.Cryptokeys

Methods

empty :: Cryptokey

Empty (Maybe a)

Defined in PowerDNS.Internal.Utils

Methods

empty :: Maybe a

class GEmpty f where

Methods

gempty :: f p

Instances

GEmpty (U1 :: Type -> Type)

Defined in PowerDNS.Internal.Utils

Methods

gempty :: U1 p

Empty a => GEmpty (K1 i a :: Type -> Type)

Defined in PowerDNS.Internal.Utils

Methods

gempty :: K1 i a p

(GEmpty f, GEmpty g) => GEmpty (f :*: g)

Defined in PowerDNS.Internal.Utils

Methods

gempty :: (f :*: g) p

GEmpty f => GEmpty (M1 i t f)

Defined in PowerDNS.Internal.Utils

Methods

gempty :: M1 i t f p