Safe Haskell	None
Language	Haskell98

Data.Default

Synopsis

Documentation

This module defines a class for types with a default value. Instances are provided for '()', Set, Map, Int, Integer, Float, Double, and many others (see below).

class Default a where Source

A class for types with a default value.

Methods

def :: a Source

The default value for this type.

Instances

Default Double
Default Float
Default Int
Default Int8
Default Int16
Default Int32
Default Int64
Default Integer
Default Ordering
Default Word
Default Word8
Default Word16
Default Word32
Default Word64
Default ()
Default All
Default Any
Default IntSet
Default TimeLocale
Default [a]
Integral a => Default (Ratio a)
Default a => Default (IO a)
(Default a, RealFloat a) => Default (Complex a)
Default a => Default (Dual a)
Default (Endo a)
Num a => Default (Sum a)
Num a => Default (Product a)
Default (First a)
Default (Last a)
Default (Maybe a)
Default (IntMap v)
Default (Set v)
Default a => Default (Tree a)
Default (Seq a)
Default (DList a)
Default r => Default (e -> r)
(Default a, Default b) => Default (a, b)
Default (Map k v)
(Default a, Default b, Default c) => Default (a, b, c)
(Default a, Default b, Default c, Default d) => Default (a, b, c, d)
(Default a, Default b, Default c, Default d, Default e) => Default (a, b, c, d, e)
(Default a, Default b, Default c, Default d, Default e, Default f) => Default (a, b, c, d, e, f)
(Default a, Default b, Default c, Default d, Default e, Default f, Default g) => Default (a, b, c, d, e, f, g)