phantom-state

Phantom State Transformer. Like State Monad, but without values.

Version on this page:0.2.1.3
LTS Haskell 24.28:0.2.1.5
Stackage Nightly 2026-01-19:0.2.1.5
Latest on Hackage:0.2.1.5

See all snapshots phantom-state appears in

BSD-3-Clause licensed by Daniel Díaz
Maintained by [email protected]
This version can be pinned in stack with:phantom-state-0.2.1.3@sha256:b937e03d42e80ebf2b74aadc0f05edc0eb6d86d64420018182c3ecd298bba922,1448

Module documentation for 0.2.1.3

Depends on 2 packages(full list with versions):
base, transformers
Used by 1 package in lts-21.12(full list with versions):
binary-list

A monad transformer that mimics the State Monad Transformer from the transformers package, but dropping the values. In those cases that you want to use the State Monad but you only care about effects and how the state changes, use this library to earn a plus of efficiency.