| Copyright | (c) Andy Gill 2001 (c) Oregon Graduate Institute of Science and Technology 2001 | 
|---|---|
| License | BSD-style (see the file LICENSE) | 
| Maintainer | R.Paterson@city.ac.uk | 
| Stability | experimental | 
| Portability | portable | 
| Safe Haskell | Safe | 
| Language | Haskell98 | 
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.