monoids-0.1.2: Lots of Monoids Source code Contents Index

Data.Group

Documentation

module Data.Monoid.Additive

class Monoid a => Group a where Source

Methods gnegate :: a -> a Source minus :: a -> a -> a Source Instances Group Bool Group a => Group (Dual a) Num a => Group (Sum a) Fractional a => Group (Product a) Group a => Group (Identity a) Group a => Group (FromString a) Num a => Group (FromNum a)

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