StateVar

State variables

https://github.com/haskell-opengl/StateVar

Version on this page:1.1.0.1
LTS Haskell 24.22:1.2.2
Stackage Nightly 2025-12-04:1.2.2
Latest on Hackage:1.2.2

See all snapshots StateVar appears in

BSD-3-Clause licensed by Sven Panne and Edward Kmett
Maintained by Sven Panne
This version can be pinned in stack with:StateVar-1.1.0.1@sha256:ea8995cb439c9c6e8b4a75320cb87465e76057e3b054abfcdcc5192ff061579e,1231

Module documentation for 1.1.0.1

Depends on 3 packages(full list with versions):
base, stm, transformers
Used by 5 packages in nightly-2015-11-21(full list with versions):
contravariant, GLUT, OpenGL, sdl2, wai-session

Hackage Build Status

Changes

1.1.0.1

  • Documentation changes only.

1.1.0.0

  • Melded the API of foreign-var 0.1 with the API of StateVar 1.0.1.1
  • Introduced HasUpdate, which permits a wider array of uses of these combinators, including usecases that must update atomically.
  • Switched to multi-parameter typeclasses. This permits Ptr a to be directly employed as an instance of HasGetter, HasUpdate, and HasSetter.

1.0.1.1

  • Infrastructure changes only.

1.0.1.0

  • Exposed GettableStateVar, SettableStateVar and StateVar constructors to make writing own instances possible.
  • Added Functor, Applicative and Monad instances for GettableStateVar.
  • Various infrastructure improvements.

1.0.0.0

  • Initial release.