transformers-0.3.0.0: Concrete functor and monad transformers

Portability | portable
Stability | experimental
Maintainer | ross@soi.city.ac.uk
Safe Haskell | Safe-Inferred

Control.Monad.Trans.State

Description

State monads, passing an updatable state through a computation.

Some computations may not require the full power of state transformers:

- For a read-only state, see Control.Monad.Trans.Reader.
- To accumulate a value without using it on the way, see Control.Monad.Trans.Writer.

This version is lazy; for a strict version, see Control.Monad.Trans.State.Strict, which has the same interface.

# Documentation

module Control.Monad.Trans.State.Lazy