statestack

Simple State-like monad transformer with saveable and restorable state

Version on this page:0.3.1
LTS Haskell 24.24:0.3.1.1@rev:4
Stackage Nightly 2025-12-20:0.3.1.1@rev:4
Latest on Hackage:0.3.1.1@rev:4

See all snapshots statestack appears in

BSD-3-Clause licensed by Brent Yorgey
Maintained by [email protected]
This version can be pinned in stack with:statestack-0.3.1@sha256:3ae02171e0a546efd9dcc9dae358e70f0bbd14be52297422381d00f085321682,1047

Module documentation for 0.3.1

Depends on 3 packages(full list with versions):
base, mtl, transformers
Used by 2 packages in nightly-2022-07-20(full list with versions):
diagrams-cairo, diagrams-postscript

Simple State-like monad transformer where states can be saved to and restored from an internal stack.

Changes

0.3.1 (24 March 2022)

  • Remove support for transformers-0.3
  • Remove dependency on transformers-compat

0.3-r2 (28 Dec 2021)

  • Allow base-4.16, transformers-0.6, transformers-compat-0.7
  • Test with GHC through 9.2

0.3-r1 (28 May 2021)

  • Builds with GHC 7.10 through 9.0

0.3 (13 November 2019)

  • Now builds with with GHC 7.10 through 8.8
  • Drop support for GHC < 7.10
  • Remove deprecated ListT instance

0.2.0.5-r2 (2 April 2018)

  • Allow base-4.11
  • Allow transformers-compat-0.6.x

0.2.0.5-r1 (8 August 2017)

  • Allow base-4.10

0.2.0.5 (17 January 2016)

  • Allow transformers-compat-0.5

0.2.0.4 (19 April 2015)

  • Use transformers-compat to suppress deprecation warnings.

0.2.0.3 (2 June 2014)

  • Allow mtl-2.2
  • Allow transformers-0.4

0.2 (5 Nov 2013)

  • Update to work with latest versions of everything

0.1: Initial release