Copyright	(c) 2012 diagrams-core team (see LICENSE)
License	BSD-style (see LICENSE)
Maintainer	diagrams-discuss@googlegroups.com
Safe Haskell	Safe-Inferred
Language	Haskell2010

Data.Monoid.Inf

Contents

Type-restricted constructors

Description

Make semigroup under min or max into monoids by adjoining an element corresponding to infinity (positive or negative, respectively). These types are similar to Option (Min a) and Option (Max a) respectively, except that the Ord instance matches the Monoid instance.

Synopsis

Documentation

data Inf p a Source

Constructors

Infinity
Finite a

Instances

Functor (Inf p)
Foldable (Inf p)
Traversable (Inf p)
Eq a => Eq (Inf p a)
Ord a => Ord (Inf Neg a)
Ord a => Ord (Inf Pos a)
Read a => Read (Inf p a)
Show a => Show (Inf p a)
Ord a => Monoid (Inf Neg a)
Ord a => Monoid (Inf Pos a)
Ord a => Semigroup (Inf Neg a)
Ord a => Semigroup (Inf Pos a)

data Pos Source

Instances

Ord a => Ord (Inf Pos a)
Ord a => Monoid (Inf Pos a)
Ord a => Semigroup (Inf Pos a)

data Neg Source

Instances

Ord a => Ord (Inf Neg a)
Ord a => Monoid (Inf Neg a)
Ord a => Semigroup (Inf Neg a)

type PosInf a = Inf Pos a Source

type NegInf a = Inf Neg a Source

minimum :: Ord a => [a] -> PosInf a Source

maximum :: Ord a => [a] -> NegInf a Source

Type-restricted constructors

posInfty :: PosInf a Source

negInfty :: NegInf a Source

posFinite :: a -> PosInf a Source

negFinite :: a -> NegInf a Source