dunai
recursion-schemes
dunai | recursion-schemes | |
---|---|---|
6 | 20 | |
190 | 335 | |
- | 0.3% | |
8.8 | 4.3 | |
13 days ago | 20 days ago | |
Haskell | Haskell | |
BSD 3-clause "New" or "Revised" License | BSD 2-clause "Simplified" License |
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dunai
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Interactive animations
Yes, and the new library dunai was just mentioned in this subreddit days ago.
- [ANN] dunai-0.11.0, dunai-test-0.11.0, bearriver-0.14.2
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Looking for projects that need developers.
I'd love to have help with Yampa & Dunai. Both are related FRP frameworks. Yampa has been around for 20 years, dunai has been around for 8. Both have regular releases every 2 months.
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[ANN] dunai-0.10.1 and bearriver-0.14.1
The github repo is located at: https://github.com/ivanperez-keera/dunai
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[ANN] dunai-0.9.0, dunai-test-0.9.0, bearriver-0.13.6
Release: https://github.com/ivanperez-keera/dunai/releases/tag/v0.9.0.
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[ANN] Yampa 0.13.6
If you haven't, I recommend you take a look at dunai . Dunai allows easier extension using custom monads, and has specific support for ExceptT.
recursion-schemes
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-❄️- 2023 Day 4 Solutions -❄️-
Reasonably proud of my part 2 solution, although would like to try using a recursion scheme rather than unstructured recursion:
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Interactive animations
Yeah, that project is pretty much at the bottom of my list, unfortunately. My top projects these days are mgmt, klister, recursion-schemes, and hint... And that's already too much!
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Science of Recursion
In a programming context, recursion schemes can be used to write recursive (or corecursive) functions, by automating/abstracting away the common boilerplate part of actually doing the recursion. They take the form of polymorphic higher-order functions, which can be imported from a library like this classic one.
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Is there a way to avoid call overhead?
Maybe I didn't link the best post. It is unfortunately the only one I know that uses Rust. If you are able to read Haskell, the documentation for the recursion-schemes package might be a better resource?
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Ah yes I love arrays with a length of infinity!!!
Writing something as a type of fold over an infinite sequence is nicer than using recursion directly in my opinion. See: https://hackage.haskell.org/package/recursion-schemes
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Tips on mastering recursion and trees and shit?
Consider recursion schemes! It let's you separate the logic of how your recursion is structured on your data, and the logic of what you're doing on each recursion stage. So e.g. you can write the core logic of a recursive linked list summation as just fun x accum -> x + accum, and then you just find the appropriate recursion scheme to pipe the list values into x and handle recursing to build accum (a catamorphism in this case)
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So you come across an undocumented library…
It's a pretty complicated bug, documented in details at https://github.com/recursion-schemes/recursion-schemes/issues/50
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Beautiful ideas in programming: generators and continuations
It’s also trivial and easy in Haskell — you just need an instance of `Foldable` or `Traversable` on your collection, and then you can fold or traverse it in a configurable way. Or for recursive structures, use https://hackage.haskell.org/package/recursion-schemes. Or even just pass a traversal function as an argument for maximum flexibility.
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fromMaybe is Just a fold
https://hackage.haskell.org/package/recursion-schemes is the "normal" library for this type of generalized folding. It even contains Base instances for Maybe and Either.
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Annotation via anamorphism?
I've been working on a system which uses recursion-schemes to annotate a recursive type. The annotated tree itself is pretty simple; at each level, we pair the annotation with the base functor, or
What are some alternatives?
reflex - Interactive programs without callbacks or side-effects. Functional Reactive Programming (FRP) uses composable events and time-varying values to describe interactive systems as pure functions. Just like other pure functional code, functional reactive code is easier to get right on the first try, maintain, and reuse.
distributed-process-platform - DEPRECATED (Cloud Haskell Platform) in favor of distributed-process-extras, distributed-process-async, distributed-process-client-server, distributed-process-registry, distributed-process-supervisor, distributed-process-task and distributed-process-execution
Yampa - Functional Reactive Programming domain-specific language for efficient hybrid systems
record - Anonymous records
reactive-banana - Library for functional reactive programming in Haskell.
unliftio - The MonadUnliftIO typeclass for unlifting monads to IO
DefendTheKing - A simple multiplayer RTS game
machines - Networks of composable stream transducers
reactive-bacon - FRP (functional reactive programming) framework inspired by RX and Iteratee
chr-core - Constraint Handling Rules
rhine - Haskell Functional Reactive Programming framework with type-level clocks
pipes-core - Compositional pipelines