stm-containers

Containers for STM

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

Version on this page:	0.2.13
LTS Haskell 23.24:	1.2.1.1
Stackage Nightly 2025-05-28:	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-0.2.13@sha256:b054a18c8ca9a4e85f0f607321f72400d130f5f2333abe1530c454f0c7819edd,8444

Module documentation for 0.2.13

STMContainers

Depends on 7 packages(full list with versions):

base, base-prelude, focus, hashable, list-t, primitive, transformers

Used by 4 packages in lts-6.1(full list with versions):

slave-thread, Spock, stack-run-auto, timemap

This library is based on an STM-specialized implementation of a Hash Array Mapped Trie. It provides efficient implementations of Map, Set and other data structures, which are slightly slower than their counterparts from "unordered-containers", but scale very well on concurrent access patterns.

For details on performance of the library see this blog post.