aivika-transformers-6.1: Transformers for the Aivika simulation library
CopyrightCopyright (c) 2009-2017 David Sorokin <david.sorokin@gmail.com>
LicenseBSD3
MaintainerDavid Sorokin <david.sorokin@gmail.com>
Stabilityexperimental
Safe HaskellSafe-Inferred
LanguageHaskell2010

Simulation.Aivika.Trans.Ref

Description

Tested with: GHC 8.0.1

This module defines an updatable reference that depends on the event queue.

Synopsis

Documentation

data Ref m a Source #

The Ref type represents a mutable variable similar to the IORef variable but only dependent on the event queue, which allows synchronizing the reference with the model explicitly through the Event monad.

Instances

Instances details
MonadDES m => ResultComputing Ref m Source # 
Instance details

Defined in Simulation.Aivika.Trans.Results

(MonadDES m, Observable (Ref m) (t m)) => Observable (Ref m) (t m) Source # 
Instance details

Defined in Simulation.Aivika.Trans.Ref

Methods

readObservable :: Ref m a -> t m a Source #

MonadDES m => Eq (Ref m a) Source # 
Instance details

Defined in Simulation.Aivika.Trans.Ref

Methods

(==) :: Ref m a -> Ref m a -> Bool #

(/=) :: Ref m a -> Ref m a -> Bool #

(MonadDES m, ResultItemable (ResultValue a), ResultItemable (ResultValue (SamplingStats a))) => ResultProvider (Ref m (SamplingCounter a)) m Source # 
Instance details

Defined in Simulation.Aivika.Trans.Results

(MonadDES m, ResultItemable (ResultValue a), ResultItemable (ResultValue (TimingStats a))) => ResultProvider (Ref m (TimingCounter a)) m Source # 
Instance details

Defined in Simulation.Aivika.Trans.Results

(Ix i, Show i, MonadDES m, ResultItemable (ResultValue [e])) => ResultProvider (Ref m (Array i e)) m Source # 
Instance details

Defined in Simulation.Aivika.Trans.Results

(MonadDES m, ResultItemable (ResultValue [e])) => ResultProvider (Ref m (Vector e)) m Source # 
Instance details

Defined in Simulation.Aivika.Trans.Results

(MonadDES m, ResultItemable (ResultValue a)) => ResultProvider (Ref m a) m Source # 
Instance details

Defined in Simulation.Aivika.Trans.Results

refChanged :: Ref m a -> Signal m a Source #

Return a signal that notifies about every change of the reference state.

refChanged_ :: MonadDES m => Ref m a -> Signal m () Source #

Return a signal that notifies about every change of the reference state.

newRef :: MonadDES m => a -> Simulation m (Ref m a) Source #

Create a new reference.

newRef0 :: (MonadDES m, MonadRef0 m) => a -> m (Ref m a) Source #

Create a new reference within more low level computation than Simulation.

readRef :: MonadDES m => Ref m a -> Event m a Source #

Read the value of a reference.

writeRef :: MonadDES m => Ref m a -> a -> Event m () Source #

Write a new value into the reference.

modifyRef :: MonadDES m => Ref m a -> (a -> a) -> Event m () Source #

Mutate the contents of the reference.