stm-containers

Containers for STM

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

Version on this page:	0.2.8
LTS Haskell 24.16:	1.2.1.1
Stackage Nightly 2025-10-21:	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-0.2.8@sha256:b7e2e5ab5ffb65d4f022c598a447db351cd6b2602baf95d4c9f937345704f6b5,8764

Module documentation for 0.2.8

STMContainers

Depends on 8 packages(full list with versions):

base-prelude, focus, hashable, list-t, loch-th, placeholders, primitive, transformers

Used by 1 package in nightly-2015-03-30(full list with versions):

slave-thread

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.