stm-containers

Containers for STM

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

Version on this page:	0.2.9
LTS Haskell 23.19:	1.2.1.1
Stackage Nightly 2025-04-24:	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-0.2.9@sha256:4c64163fbe8477ba8daf6d20ad4590199a7ea10486bfeae8ab98a60907bb0c0a,8685

Module documentation for 0.2.9

STMContainers

Depends on 8 packages(full list with versions):

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

Used by 2 packages in lts-3.22(full list with versions):

slave-thread, Spock

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.