rust-lab-log
percival
| rust-lab-log | percival | |
|---|---|---|
| 1 | 12 | |
| 1 | 610 | |
| - | 0.0% | |
| 5.6 | 0.0 | |
| 12 months ago | about 2 years ago | |
| Rust | Rust | |
| - | MIT License |
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.
rust-lab-log
-
What App to Use for Notes?
Currently use markdown files + dropbox for sync. I can't seem to stick with a single notes app for any appreciable length of time but having files in plain text makes it easier to switch.
Currently using:
- Obsidian: this one has stuck the longest
- iA Writer: really pretty, seems to be more useful for longform
- NeoVim: I live it in anyway... may as well
- rlg: my own "dump thought to single file w/ timestamp" rust app), very janky, written specifically for my own use-case, standard "there may be dragons here, might eat your computer just for fun, etc" - https://github.com/bryan-lott/rust-lab-log
percival
-
Learn Datalog Today
Souffle and Cozo mentioned below already implement the whole of "traditional" datalog.
Percival (https://github.com/ekzhang/percival) has some very nice examples showing how you can interactively write and test rules on top of a datalog interpreter.
Bud (http://bloom-lang.net/bud/) is Hellerstein's proof of concept playground. It has bit-rotted in the past few years, but the examples are readable even if you can't easily get it working.
The complexity can be quite good. You can syntactically determine when you've written linear recursion (equivalent to a for loop) vs not. Otherwise, the complexity is what you'd expect from incremental view maintenance in a normal SQL database. Which is to say O(n^k) with k being the number of relations joined, but usually much, much less with appropriate indexes and skew in the data. All the usual tricks concerning data normalization and indexes from databases apply.
-
Soufflé: A Datalog Synthesis Tool for Static Analysis
I've worked on percival a bit, it compiles (transpiles?) the datalog ast into javascript code on demand and executes it to get the results, see [1]. Percival's creator, Eric, also submitted a 10m presentation about the project [2] to the HYTRADBOI 'virtual conference' earlier this year [2]. They also submitted a Show HN that received a couple comments [3]. The Have You Tried Rubbing A Database On It conference included several awesome presentations featuring datalog, which readers may find interesting [4].
[1]: https://github.com/ekzhang/percival/blob/main/crates/perciva...
[2]: https://www.hytradboi.com/2022/percival-a-reactive-language-...
[3]: https://news.ycombinator.com/item?id=29521975
[4]: https://www.hytradboi.com/
-
Chumsky, a Rust parser-combinator library with error recovery
I haven't written a parser with Chumsky, bit I've played with a little one a bit if you wanna see an example syntax. The error reporting for this project is implemented with `ariadne` which is also really slick.
Parser: https://github.com/ekzhang/percival/blob/main/crates/perciva...
Error reporting: https://github.com/ekzhang/percival/blob/main/crates/perciva...
Datalog playground: https://percival.ink/
To see an error report, delete some punctuation from one of the Datalog code blocks then press shift-return.
- Show HN: Percival – Web-based reactive Datalog notebooks, made with Rust+Svelte
- Percival: Web-based, reactive Datalog notebooks for data analysis and visualization, written in Rust and Svelte
What are some alternatives?
zim-desktop-wiki - Main repository of the zim desktop wiki project
codeql - CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security
Joplin - Joplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.
crepe - Datalog compiler embedded in Rust as a procedural macro
bat - A cat(1) clone with wings.
souffle - Soufflé is a variant of Datalog for tool designers crafting analyses in Horn clauses. Soufflé synthesizes a native parallel C++ program from a logic specification.