monoidal-containers: Containers with monoidal accumulation

[ bsd3, data, library ] [ Propose Tags ]

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)
Versions [faq],,,,,,,,,,,,,,,, 0.6 (info)
Change log
Dependencies aeson (>=1.0 && <1.5), base (>=4.7 && <4.14), containers (>=0.5 && <0.7), deepseq (>=1.3 && <1.5), hashable (>=1.2 && <1.4), lens (>=4.4 && <5), newtype (==0.2.*), semialign (>=1 && <1.1), semigroups (>=0.18 && <0.20), these (>=0.7 && <0.9 || >=1 && <1.1), unordered-containers (==0.2.*) [details]
License BSD-3-Clause
Copyright (c) 2014 Ben Gamari
Author Ben Gamari
Revised Revision 2 made by GeorgeWilson at Tue Oct 15 07:17:18 UTC 2019
Category Data
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Source repo head: git clone git://
Uploaded by abrar at Sat Aug 24 19:41:12 UTC 2019
Distributions LTSHaskell:, NixOS:0.6, Stackage:
Downloads 6074 total (465 in the last 30 days)
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Status Hackage Matrix CI
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