eff
ðŸš§ a work in progress effect system for Haskell ðŸš§ (by hasura)
extensibleeffects
Extensible Effects: An Alternative to Monad Transformers (by suhailshergill)
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eff  extensibleeffects  

18  1  
537  175  
0.4%    
0.0  0.0  
7 months ago  almost 3 years ago  
Haskell  Haskell  
ISC License  MIT License 
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars  the number of stars that a project has on GitHub. Growth  month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars  the number of stars that a project has on GitHub. Growth  month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
eff
Posts with mentions or reviews of eff.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 20230712.

Haskellers who moved to Rust: What has been your experience?
You can swapout implementations for testing, avoid the crazy N^2 instances issues, etc. They're pretty cool. Currently there are many competing libraries. polysemy and eff both have good examples on their homepages.

What are the current hot topics in type theory and static analysis?
Effect systems and Algebraic effects. ocaml has just released a strippeddown effect system. People are also working on Effect systems for Haskell (eff, fusedeffects, effet). Koka is a language built with effects first and foremost and itâ€™s rapidly gaining popularity. Unison also has effects.

[ANNOUNCE] GHC 9.6.1 is now available
There are also a few subtle issues that arise with delconts related to semantics of higher order effects (see here and here), but they might be solvable.

Effectful  PaweÅ‚ Szulc  Lambda Days 2022
Details are in https://github.com/hasura/eff/issues/12 and https://www.reddit.com/r/haskell/comments/pywuqg/unresolved_challenges_of_scoped_effects_and_what/.

Looking for languages that combine algebraic effects with parallel execution
You'll get fearless parallel with STM in the mixture, and GHC is getting a work in progress effect system for Haskell, as Delimited continuation primops has been merged.

Should I pick up OCaml or Haskell?
My last example is algebraic effects, some of which have been made possible in a both practical and efficient way thanks to extremely recent research, and that I can use to implement architectures like Ports and Adapters or Clean Architecture and have very maintainable code. (Extensible Effects â€” An Alternative to Monad Transformers was published in 2013, Effect Handlers in Scope was published in 2014 and they are behind Polysemy, while there is ongoing work on effects with even better performance, like Eff)

[ANN] cleff  fast and consise extensible effects
cleff's Eff monad is esentially implemented as a ReaderT IO. [...] This is first done by eff, [...]

Opinions on Reader + Continuationbased IO?
Here is link number 1  Previous text "eff"
This is essentially how continuation based effect systems work, check out eveff and eff.

Where's more discussion of the designs of effect systems?
Languages such as Koka only support algebraic effects, not scoping operations such as catch and listen. The Effect Handlers in Scope paper introduces scoping operations, which lead to the Haskell libraries fusedeffects and polysemy, but they turned out to have some weird semantics. eff is her effort to fix that.
extensibleeffects
Posts with mentions or reviews of extensibleeffects.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 20210627.

A solid GUI Framework for Haskell?
Why do you need a GUI library, if you can write your application using extensible effects frameworks, just choose any and enjoy!
What are some alternatives?
When comparing eff and extensibleeffects you can also consider the following projects:
ether  Monad Transformers and Classes
frpnow
freersimple  A friendly effect system for Haskell
controlmonadexception  Explicitly Typed exceptions as a library
atl  Arrow Transformer Library
effectmonad  Provides 'graded monads' and 'parameterised monads' to Haskell, enabling finegrained reasoning about effects.
ControlMonadMultiPass
MonadRandom  A monad transformer and corresponding type class for computations which consume random values.
fusedeffects  A fast, flexible, fused effect system for Haskell
freereffects  An implementation of "Freer Monads, More Extensible Effects".
frpzoo  Comparing many FRP implementations by reimplementing the same toy app in each.