obelisk
differential-datalog
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obelisk | differential-datalog | |
---|---|---|
26 | 22 | |
924 | 1,332 | |
1.6% | 0.8% | |
7.4 | 0.0 | |
7 days ago | 10 months ago | |
Haskell | Java | |
BSD 3-clause "New" or "Revised" License | MIT License |
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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.
obelisk
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Help initializing obelisk project
Hello I remember successfully setting up obelisk a while ago and have gone through the instructions https://github.com/obsidiansystems/obelisk and ensured that everything is installed correctly, when I run the install command fro obelisk it says that it's installed but when I run ob init I get an error of command not found, this is an arch machine not nixOS. Any help would me much appreciated.
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Web ui framework
If you want to use reflex, the obelisk framework is pretty user friendly. You do have to install nix on your machine, but the ob command handles all the nix interactions for you so you /hopefully/ don't need to know much.
- obelisk/README.md at master · obsidiansystems/obelisk · GitHub
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Why are haskell applications so obscure?
You can make all those things in haskell, and I do professionally. Frontends (entirely in haskell), native IOS and Android applications, Servers, and Games. In fact the framework Obelisk does most of these all out of the box.
- Any advice on making a mobile app using Haskell?
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Building a Haskell CRUD stack with Obelisk for PowerZonePack
Thanks for the comment! We can honestly say that Obelisk is far from perfect, but we're continuously improving the project in our daily basics. And that's why we encourage you to start your adventure with the lib anew. If you still miss a guide to routing with Obelisk, please read this doc. Our team would be happy to answer your further question regarding Obelisk; feel free to email us anytime!
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GitHub - NorfairKing/haskell-dependency-graph-nix
I also had a use case where I needed to extract the nix derivation dependencies of haskell packages: https://github.com/obsidiansystems/obelisk/pull/933
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Web development in Haskell
There's also GHCJS, with https://github.com/obsidiansystems/obelisk being (probably) the best choice, but personally I found it extremely tedious to set up a dev environment (not a nix guy) and there's also the learning curve of FRP.
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The Big List of Haskell GUI Libraries
https://github.com/obsidiansystems/obelisk, https://shpadoinkle.org/
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Monthly Hask Anything (July 2022)
I can't speak to the nicest way, as I haven't actually developed any Android apps with Haskell, but I've been meaning to give Obelisk a try.
differential-datalog
- DDlog: A programming language for incremental computation
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Feldera – a more performant streaming database based on Z-sets
Hi,
> I wonder if it lives up to the hype.
We do think so! (disclaimer: I'm a co-founder at Feldera)
To give some more background: We are co-designing/trialing feldera with several industry/enterprise partners from different domains. Our core team also built differential datalog (https://github.com/vmware/differential-datalog) in the past. And while ddlog is used quite successfully in products today, we believe the many lessons we learned with ddlog will help us to build an even better continuous analytics platform. FYI our code is open-source at https://github.com/feldera/feldera if you'd like to try it out.
Also feel free to join our community slack channel (https://www.feldera.com/slack/) if you have more questions.
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Why Are There No Relational DBMSs? [pdf]
The relational model (and generally working at the level of sets/collections, instead of the level of individual values/objects) actually makes it easier to have this kind of incremental computation in a consistent way, I think.
There's a bunch of work being done on making relational systems work this way. Some interesting reading:
- https://www.scattered-thoughts.net/writing/an-opinionated-ma...
- https://materialize.com/ which is built on https://timelydataflow.github.io/differential-dataflow/, which has a lot of research behind it
- Which also can be a compilation target for Datalog: https://github.com/vmware/differential-datalog
- Some prototype work on building UI systems in exactly the way you describe using a relational approach: https://riffle.systems/essays/prelude/ (and HN discussion: https://news.ycombinator.com/item?id=30530120)
(There's a lot more too -- I have a hobby interest in this space, so I have a small collection of links)
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Differential Datalog: a programming language for incremental computation
Tutorial which I didn’t see linked in the README: https://github.com/vmware/differential-datalog/blob/master/d...
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Show HN: Cozo – new Graph DB with Datalog, embedded like SQLite, written in Rust
This is amazing!
Have you looked at differential-datalog? It's rust-based, maintained by VMWare, and has a very rich, well-typed Datalog language. differential-datalog is in-memory only right now, but could be ideal to integrate your graph as a datastore or disk spill cache.
https://github.com/vmware/differential-datalog
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Help wanted!
Sort of related, in my mind at least, is differential dataflow, e.g. https://github.com/vmware/differential-datalog
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Datalog in JavaScript
It’s fascinating to see so many different parties converging on Datalog for reactive apps & UI.
- There are several such talks at https://www.hytradboi.com/ (happening this Friday)
- Roam Research and its clones Athens, Logseq, use Datascript / ClojureScript https://github.com/tonsky/datascript
- differential-datalog isn’t an end-to-end system, but is highly optimized for quick reactivity https://github.com/vmware/differential-datalog
- Datalog UI is a Typescript port of some of differential-datalog’s ideas https://datalogui.dev/
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Call for Help - Open Source Datom/EAV/Fact database in Rust.
Rust related https://github.com/vmware/differential-datalog
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Anything like Svelte/Jetpack Compose for Haskell?
Actually, that makes me wonder whether or not differential datalog falls under that umbrella, and if it could be applied in the same way Compose is.
What are some alternatives?
reflex-platform - A curated package set and set of tools that let you build Haskell packages so they can run on a variety of platforms. reflex-platform is built on top of the nix package manager.
scryer-prolog - A modern Prolog implementation written mostly in Rust.
vscode-ghc-simple - Simple GHC (Haskell) integration for VSCode
timely-dataflow - A modular implementation of timely dataflow in Rust
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.
materialize - The data warehouse for operational workloads.
reflex-native - Framework for writing fully native apps using Reflex, a Functional Reactive Programming library for Haskell.
differential-dataflow - An implementation of differential dataflow using timely dataflow on Rust.
miso - :ramen: A tasty Haskell front-end framework
datalevin - A simple, fast and versatile Datalog database
nix - Nix, the purely functional package manager
logica - Logica is a logic programming language that compiles to SQL. It runs on Google BigQuery, PostgreSQL and SQLite.