monad-classes alternatives and similar packages

Based on the "monad" category.
Alternatively, view monad-classes alternatives based on common mentions on social networks and blogs.

monad-control

9.1 4.0 monad-classes VS monad-control

Lift control operations, like exception catching, through monad transformers
monad-time

9.0 0.0 monad-classes VS monad-time

Type class for monads which carry the notion of the current time.

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monad-unlift-ref

8.5 0.0 monad-classes VS monad-unlift-ref

Typeclasses for representing monad (transformer) morphisms
monad-unlift

8.5 0.0 monad-classes VS monad-unlift

Typeclasses for representing monad (transformer) morphisms
monad-metrics

8.4 0.7 monad-classes VS monad-metrics

haskell metrics
monad-loops

8.3 0.0 monad-classes VS monad-loops

Some useful control operators for looping
monad-skeleton

7.8 0.0 monad-classes VS monad-skeleton

Operational monad library
monad-logger-prefix

7.8 0.0 monad-classes VS monad-logger-prefix

Easily add a prefix to your MonadLogger output.
monad-validate

7.7 0.0 monad-classes VS monad-validate

A Haskell monad transformer library for data validation
monad-memo

7.5 1.9 monad-classes VS monad-memo

Memoization monad transformer
monad-batcher

7.4 0.0 monad-classes VS monad-batcher

An applicative monad that batches commands for later more efficient execution
monad-ste

6.7 0.0 monad-classes VS monad-ste

ST with efficient exceptions
monad-io-adapter

6.3 0.0 monad-classes VS monad-io-adapter

A Haskell package that adapts between MonadIO and MonadBase IO
monad-supply

6.2 0.2 monad-classes VS monad-supply

Support for computations which consume values from a (possibly infinite) supply.
monad-st

5.2 0.0 monad-classes VS monad-st

A basic monad for lifting ST actions
monad-task

5.0 0.0 monad-classes VS monad-task

Task monad transformer that turns event processing into co-routines programming.
monad-extras

4.6 0.0 monad-classes VS monad-extras

Extra utility functions for working with monads
monad-levels

4.4 0.0 monad-classes VS monad-levels

Level-based interpretation of monad transformers
monad-journal

4.4 0.0 monad-classes VS monad-journal

Pure logger typeclass and monad transformer
monad-resumption

3.5 0.0 monad-classes VS monad-resumption

Resumption and Reactive-Resumption Monads for the Haskell programming language.
monad-loops-stm

3.3 0.0 monad-classes VS monad-loops-stm

STM-specific control operators (split out of monad-loops as of version 0.4)
monad-interleave

2.4 0.0 monad-classes VS monad-interleave

Monads with an unsaveInterleaveIO-like operation
monad-introspect

2.4 0.0 monad-classes VS monad-introspect

A reader monad that gives the environment access to the entire transformer stack
monad-open

2.4 0.0 monad-classes VS monad-open

Open-ended computation for when you need it (open recursion)
monad-peel

2.3 0.0 monad-classes VS monad-peel

Lift control operations like exception catching through monad transformers
io-manager

2.1 0.0 monad-classes VS io-manager

Skeleton library around the IO monad.
monad-finally

1.7 0.0 monad-classes VS monad-finally

Guard monadic computations with cleanup actions
monad-var

1.7 0.0 monad-classes VS monad-var

Generic operations over variables
monad-control-aligned

1.6 0.0 monad-classes VS monad-control-aligned

Lift control operations, like exception catching, through monad transformers
monad-markov

0.5 0.0 monad-classes VS monad-markov

Markov process monad
monad-control-identity

0.5 0.0 monad-classes VS monad-control-identity

Stronger classes than monad-control

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Add another 'monad' Package

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README

See this series of articles for the detailed description and motivation.

This is a more flexible version of mtl, the monad transformers library.

You can have many layers of e.g. state transformers in your stack, and you don't have to explicitly lift your gets and puts, as soon as different state transformers carry different types of states.

Example:
```
a :: (MonadState Bool m, MonadState Int m) => m ()
a = do
  put False -- set the boolean state
  modify (+ (1 :: Int)) -- modify the integer state
```
mtl requires Θ(n2) instances (like MonadReader e (StateT s m)); monad-classes requires only Θ(n) of them (where n is the number of different transformer types).

If you'd like to define your own monad-classes-style class, you have to write much less boilerplate code.

monad-classes

A more flexible mtl

monad-classes alternatives and similar packages

Popular Comparisons

README