stm-containers

Containers for STM

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

Version on this page:	1.2.1
LTS Haskell 24.24:	1.2.1.1
Stackage Nightly 2025-12-15:	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-1.2.1@sha256:d86f037e492c57b1886b5ae2a6bbce48441409254ba8bf668c302b765aebef61,3492

Module documentation for 1.2.1

StmContainers

Depends on 7 packages(full list with versions):

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

Used by 1 package in nightly-2024-06-09(full list with versions):

slave-thread

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 For details on performance of the library, which are a bit outdated, see this blog post.