stm-containers

Containers for STM

https://github.com/nikita-volkov/stm-containers

Version on this page:	1.1.0.4
LTS Haskell 23.18:	1.2.1.1
Stackage Nightly 2025-04-19:	1.2.1.1
Latest on Hackage:	1.2.1.1

See all snapshots stm-containers appears in

MIT licensed and maintained by Nikita Volkov

This version can be pinned in stack with:stm-containers-1.1.0.4@sha256:f83a683357b6e3b1dda3e70d2077a37224ed534df1f74c4e11f3f6daa7945c5b,3248

Module documentation for 1.1.0.4

StmContainers

Depends on 7 packages(full list with versions):

base, deferred-folds, focus, hashable, list-t, stm-hamt, transformers

This library is based on an STM-specialized implementation of Hash Array Mapped Trie. It provides efficient implementations of Map, Set and other data structures, which starting from version 1 perform even better than their counterparts from "unordered-containers", but also scale well on concurrent access patterns.

For details on performance of the library, which are a bit outdated, see this blog post.