frp-zoo
recursion-schemes
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frp-zoo | recursion-schemes | |
---|---|---|
5 | 20 | |
482 | 335 | |
- | 0.6% | |
0.0 | 4.9 | |
about 2 years ago | 12 days ago | |
Haskell | Haskell | |
- | BSD 2-clause "Simplified" License |
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frp-zoo
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Interactive animations
It's on the list! And, err, has been on the list for a while. I have way too many open source projects!!
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Higher order FRP with React - why is it not happening?
It seems however that higher order FRP is not really being used together with react.
- Monthly Hask Anything (June 2021)
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?
eff - 🚧 a work in progress effect system for Haskell 🚧
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
haskell.nix - Alternative Haskell Infrastructure for Nixpkgs
record - Anonymous records
ghc - Mirror of the Glasgow Haskell Compiler. Please submit issues and patches to GHC's Gitlab instance (https://gitlab.haskell.org/ghc/ghc). First time contributors are encouraged to get started with the newcomers info (https://gitlab.haskell.org/ghc/ghc/wikis/contributing).
unliftio - The MonadUnliftIO typeclass for unlifting monads to IO
effect-zoo - Comparing Haskell effect systems for ergonomics and speed
machines - Networks of composable stream transducers
fused-effects - A fast, flexible, fused effect system for Haskell
chr-core - Constraint Handling Rules
in-other-words - A higher-order effect system where the sky's the limit
pipes-core - Compositional pipelines