# New monads

### From HaskellWiki

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It seems that the liftIO function from MonadIO can be generalized to access whatever the base of a transformer stack happens to be. So there is no need for a liftSTM, liftST, etc. | It seems that the liftIO function from MonadIO can be generalized to access whatever the base of a transformer stack happens to be. So there is no need for a liftSTM, liftST, etc. | ||

− | View [[MonadBase]]. | + | View [[NewMonads/MonadBase]]. |

== MonadLib == | == MonadLib == | ||

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It also defines BaseM which is like MonadBase above. | It also defines BaseM which is like MonadBase above. | ||

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+ | == MonadRandom == | ||

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+ | A simple monad transformer to allow computations in the transformed monad to generate random values. | ||

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+ | View [[NewMonads/MonadRandom]]. |

## Revision as of 17:16, 24 August 2006

## Contents |

## 1 MonadBase

It seems that the liftIO function from MonadIO can be generalized to access whatever the base of a transformer stack happens to be. So there is no need for a liftSTM, liftST, etc.

View NewMonads/MonadBase.

## 2 MonadLib

This is by Iavor S. Diatchki and can be found at http://www.cse.ogi.edu/~diatchki/monadLib/

It is a new version of the mtl package with transformers: ReaderT WriterT StateT ExceptT SearchT ContT

It also defines BaseM which is like MonadBase above.

## 3 MonadRandom

A simple monad transformer to allow computations in the transformed monad to generate random values.

View NewMonads/MonadRandom.