eff
🚧 a work in progress effect system for Haskell 🚧 (by hasura)
eveff
Efficient Haskell effect handlers based on evidence translation. (by xnning)
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| eff | eveff | |
|---|---|---|
| 12 | 1 | |
| 501 | 69 | |
| 2.4% | - | |
| 0.3 | 1.3 | |
| over 1 year ago | 10 months 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 2022-01-30.
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[ANN] cleff - fast and consise extensible effects
cleff's Eff monad is esentially implemented as a ReaderT IO. [...] This is first done by eff, [...]
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Opinions on Reader + Continuation-based IO?
Here is link number 1 - Previous text "eff"
This is essentially how continuation based effect systems work, check out eveff and eff.
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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 fused-effects and polysemy, but they turned out to have some weird semantics. eff is her effort to fix that.
While her eff is still under construction, there are relative more mature pieces like Koka etc. I'd very much like to understand how her concerns map to those other effect systems, but can't find more write-ups about the design space of effect systems.
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Languages that don't support Error-Catching as a Control Structure?
There are a few languages that have algebraic effect systems, most notably Haskell, but these systems are implemented as libraries, not baked into the language (which can have advantages and disadvantages).
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The Problem of Effects (2020)
Let me tell you what I'm worried about with effects systems: One of the smartest people I know of has a library called Eff https://github.com/hasura/eff that efficiently implements effects through some modifications to GHC. The thing is, she's pretty much stopped working on because she found some really nasty semantic edge-cases that she couldn't resolve to her satisfaction. (I don't understand the problems well enough to describe them, and I think they're specific to lazy languages, but it has left me cautious about the effect model in general.)
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Thoughts on polysemy?
eff was supposed to solve (some of) the above problems, but it's stalled now.
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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!
- Monthly Hask Anything (June 2021)
eveff
Posts with mentions or reviews of eveff.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-06-02.
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Monthly Hask Anything (June 2021)
I would also like to add: https://github.com/xnning/EvEff/
What are some alternatives?
When comparing eff and eveff you can also consider the following projects:
fused-effects - A fast, flexible, fused effect system for Haskell
frp-zoo - Comparing many FRP implementations by reimplementing the same toy app in each.
freer-simple - A friendly effect system for Haskell
mtl-style-example - A small example of using mtl style to unit test effectful code
free - free monads
polysemy - :gemini: higher-order, no-boilerplate monads
ihp - 🔥 The fastest way to build type safe web apps. IHP is a new batteries-included web framework optimized for longterm productivity and programmer happiness
distributed-closure - Serializable closures for distributed programming.
mtl - The Monad Transformer Library
in-other-words - A higher-order effect system where the sky's the limit
extensible-effects - Extensible Effects: An Alternative to Monad Transformers