Data.Default.Instances.Base.New

Default instances for types in newer versions of base package.

Documentation

Following Default instances are provided:

instance Default a => Default (Const a b) where
    def = Const def

instance Monad m => Default (Kleisli m a b) where
    def = Kleisli return

instance Default Version where
    def = Version [] []

Following instances are available only for base >= 4.7.0.0:

instance Default (Proxy a) where
    def = Proxy

instance Default SomeNat where
    def = SomeNat (Proxy :: Proxy 0)

instance Default SomeNat where
    def = SomeSymbol (Proxy :: Proxy "")

Following instances are available only for base >= 4.8.0.0:

instance Alternative f => Default (Alt f a) where
    def = Alt empty

instance Default a => Default (Identity a) where
    def = Identity def

instance Default Natural where
    def = 0

Following instances are available only for base >= 4.9.0.0:

instance Default a => Default (NonEmpty a) where
    def = def :| []

instance Bounded a => Default (Min a) where
    def = minBound

instance Bounded a => Default (Max a) where
    def = maxBound

instance Default (Option a) where
    def = Option Nothing

This module also reexporting instances from Data.Default.Instances.Base.