Safe Haskell	Safe
Language	Haskell2010

Optic.Prism.Empty

Contents

Empty

Synopsis

class AsEmpty a where
pattern Empty :: forall s. AsEmpty s => s

Empty

class AsEmpty a where #

Methods

_Empty :: Prism' a () #

>>> isn't _Empty [1,2,3]
True

Instances

AsEmpty Ordering
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' Ordering () #
AsEmpty ()
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' () () #
AsEmpty ByteString
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' ByteString () #
AsEmpty ByteString
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' ByteString () #
AsEmpty Text
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' Text () #
AsEmpty Text
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' Text () #
AsEmpty Event
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' Event () #
AsEmpty All
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' All () #
AsEmpty Any
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' Any () #
AsEmpty IntSet
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' IntSet () #
AsEmpty [a]
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' [a] () #
AsEmpty (Maybe a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Maybe a) () #
AsEmpty (First a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (First a) () #
AsEmpty (Last a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Last a) () #
AsEmpty a => AsEmpty (Dual a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Dual a) () #
(Eq a, Num a) => AsEmpty (Sum a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Sum a) () #
(Eq a, Num a) => AsEmpty (Product a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Product a) () #
AsEmpty (IntMap a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (IntMap a) () #
AsEmpty (Seq a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Seq a) () #
AsEmpty (Set a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Set a) () #
Storable a => AsEmpty (Vector a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Vector a) () #
Unbox a => AsEmpty (Vector a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Vector a) () #
AsEmpty (HashSet a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (HashSet a) () #
AsEmpty (Vector a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Vector a) () #
(AsEmpty a, AsEmpty b) => AsEmpty (a, b)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (a, b) () #
AsEmpty (HashMap k a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (HashMap k a) () #
AsEmpty (Map k a)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (Map k a) () #
(AsEmpty a, AsEmpty b, AsEmpty c) => AsEmpty (a, b, c)
Instance details Defined in Control.Lens.Empty Methods _Empty :: Prism' (a, b, c) () #

pattern Empty :: forall s. AsEmpty s => s #