| Safe Haskell | Safe |
|---|---|
| Language | Haskell2010 |
Control.Monad.TransLogicState.Class
- class TransLogicState s t where
- observe :: TransLogicState s t => s -> t Identity a -> a
- observeAll :: TransLogicState s t => s -> t Identity a -> [a]
- observeMany :: TransLogicState s t => s -> Int -> t Identity a -> [a]
Documentation
class TransLogicState s t where Source #
Additions to MonadTrans specifically useful for LogicState
Minimal complete definition
Methods
observeT :: Monad m => s -> t m a -> m a Source #
Extracts the first result from a 't m' computation, failing otherwise.
observeAllT :: Monad m => s -> t m a -> m [a] Source #
Extracts all results from a 't m' computation.
observeStateAllT :: Monad m => s -> t m a -> m ([a], s) Source #
Extracts all results from a 't m' computation.
observeManyT :: forall m a. Monad m => s -> Int -> t m a -> m [a] Source #
Extracts up to a given number of results from a 't m' computation.
observeStateManyT :: forall m a. Monad m => s -> Int -> t m a -> m ([a], s) Source #
Extracts up to a given number of results from a 't m' computation.
liftWithState :: Monad m => (s -> m (a, s)) -> t m a Source #
Lift a monad by threading the state available in the transformed monad through it
Instances
| TransLogicState (gs, bs) (LogicStateT gs bs) Source # | |
observe :: TransLogicState s t => s -> t Identity a -> a Source #
Extracts the first result from a LogicVar computation.
observeAll :: TransLogicState s t => s -> t Identity a -> [a] Source #
Extracts all results from a LogicVar computation.
observeMany :: TransLogicState s t => s -> Int -> t Identity a -> [a] Source #
Extracts up to a given number of results from a LogicVar computation.