monoidal-containers: Containers with monoidal accumulation

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Containers with merging via monoidal accumulation. The Monoid instances provided by the containers and unordered-containers packages merge structures in a left-biased manner instead of using the underlying monoidal structure of the value.

This package wraps the types provided by these packages, but provides Monoid instances implemented in terms of the value type's mappend. For instance, the Monoid Map instance looks like,

instance (Ord k, Semigroup a) => Monoid (MonoidalMap k a)

Modules

[Index] [Quick Jump]

Data
- HashMap
  - Data.HashMap.Monoidal
- IntMap
  - Data.IntMap.Monoidal
    - Data.IntMap.Monoidal.Strict
- Map
  - Data.Map.Monoidal
    - Data.Map.Monoidal.Strict

Flags

Automatic Flags

Name	Description	Default
split-these	Use split these/semialign packages	Enabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

Downloads

monoidal-containers-0.6.6.0.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

Maintainer's Corner

Package maintainers

BenGamari, OliverCharles, RyanTrinkle, mpickering, abrar, alexfmpe, maralorn, ymeister

For package maintainers and hackage trustees

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Versions [RSS]	0.1.0.0, 0.1.1.0, 0.1.2.0, 0.1.2.1, 0.1.2.2, 0.1.2.3, 0.1.2.4, 0.1.2.5, 0.2.0.0, 0.3.0.0, 0.3.0.1, 0.3.0.2, 0.3.1.0, 0.4.0.0, 0.5.0.0, 0.5.0.1, 0.6, 0.6.0.1, 0.6.1.0, 0.6.2.0, 0.6.3.0, 0.6.4.0, 0.6.5.0, 0.6.6.0 (info)
Change log	Changelog.md
Dependencies	aeson (>=1.0 && <2.3), base (>=4.7 && <4.22), containers (>=0.5.9 && <0.8), deepseq (>=1.3 && <1.6), hashable (>=1.2 && <1.6), lens (>=4.4 && <5.4), newtype (>=0.2 && <0.3), semialign (>=1 && <1.4), these (>=0.7 && <0.9 \|\| >=1 && <1.3), unordered-containers (>=0.2 && <0.3), witherable (>=0.4 && <0.6) [details]
Tested with	ghc ==8.2 \|\| ==8.4 \|\| ==8.6 \|\| ==8.8 \|\| ==8.10 \|\| ==9.0 \|\| ==9.2 \|\| ==9.4 \|\| ==9.6 \|\| ==9.10 \|\| ==9.12
License	BSD-3-Clause
Copyright	(c) 2014 Ben Gamari
Author	Ben Gamari
Maintainer	ben@smart-cactus.org
Category	Data
Home page	http://github.com/bgamari/monoidal-containers
Source repo	head: git clone https://github.com/bgamari/monoidal-containers
Uploaded	by alexfmpe at 2025-04-05T16:36:11Z
Distributions	LTSHaskell:0.6.6.0, NixOS:0.6.5.0, Stackage:0.6.6.0
Reverse Dependencies	15 direct, 8063 indirect [details]
Downloads	31062 total (11 in the last 30 days)
Rating	(no votes yet) [estimated by Bayesian average]
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Status	Docs uploaded by user Build status unknown [no reports yet]