Safe Haskell	None
Language	Haskell2010

Data.HasEmpty

Synopsis

Documentation

class HasEmpty a where #

This class defines how to represent empty values in a UI. A generic derivation is available for every SOP type.

Methods

Instances

HasEmpty Bool #
Methods emptyValue :: Bool #
HasEmpty Char #
Methods emptyValue :: Char #
HasEmpty Double #
Methods emptyValue :: Double #
HasEmpty Int #
Methods emptyValue :: Int #
HasEmpty () #
Methods emptyValue :: () #
HasEmpty Text #
Methods emptyValue :: Text #
HasEmpty [a] #
Methods emptyValue :: [a] #
HasEmpty (Maybe a) #
Methods emptyValue :: Maybe a #
HasEmpty a => HasEmpty (Identity a) #
Methods emptyValue :: Identity a #
HasEmpty (Seq k) #
Methods emptyValue :: Seq k #
Ord k => HasEmpty (Set k) #
Methods emptyValue :: Set k #
(HasEmpty a, HasEmpty b) => HasEmpty (a, b) #
Methods emptyValue :: (a, b) #
Ord k => HasEmpty (Map k v) #
Methods emptyValue :: Map k v #
(HasEmpty a, HasEmpty b) => HasEmpty ((-*-) a b) #
Methods emptyValue :: a -*- b #
(HasEmpty a, HasEmpty b) => HasEmpty ((\|*\|) a b) #
Methods emptyValue :: a \|*\| b #

class HasEmptyCode (xs :: [k]) #

Instances

HasEmptyCode k ((:) k x xs) #