ATS-Xanadu
yatima-lang-alpha
| ATS-Xanadu | yatima-lang-alpha | |
|---|---|---|
| 1 | 9 | |
| 182 | 450 | |
| - | - | |
| 9.8 | 0.0 | |
| 4 days ago | about 1 year ago | |
| ATS | Rust | |
| GNU General Public License v3.0 only | MIT License |
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ATS-Xanadu
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Yatima: A programming language for the decentralized web
There's definitely some similarities to ATS conceptually, but not that much in the actual implementation, and definitely not in the syntax.
That said, Hongwei Xi is a genius, and ATS is one of the most important and innovative languages of the past decade, despite the crazy syntax (seriously, t@ype for the sort of flat memory types is just bonkers). I'm really looking forward to ATS3 though https://github.com/githwxi/ATS-Xanadu, and I think there's chance it could gain serious traction.
yatima-lang-alpha
- Yatima has received a Web 3.0 Grant!
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Yatima: A programming language for the decentralized web
Sure, so I do use petgraph for actually visualizing the lambda DAG graphs, since it's got a very nice graphviz integration: https://github.com/yatima-inc/yatima/blob/059b0abccd0ca54b9a....
You can see the output of that here: https://i.redd.it/94zg24fboyv61.png
(N.B. We removed that module from the language core since we're trying to make that no_std, but we're adding it back to our utils crate soon: https://github.com/yatima-inc/yatima/issues/70)
But we can't use petgraph for the actual computational lambda-DAG because of performance. For example, one thing we get by using pointers is constant-time insertion and removal of of parent nodes (every node in the graph points to their parent). We actually wrote our own Doubly-Linked-List in Rust (it can be done!) to store pointers to the parents for this reason: https://github.com/yatima-inc/yatima/blob/main/core/src/dll.....
There's also memory concerns, given that the lambda-DAG collects its own garbage, freeing space allocated for nodes when no longer in use, whereas I believe petgraph is just `Vec` internally, which would require shrinking, and that would also be slow.
All this low-level pointer manipulation was, tbh, a huge amount of work, but the end result is a performant lazy lambda-calculus reducer with sharing in a few thousand lines of Rust, which means fast lambdas on wherever WASM runs.
(That said, I'm a little bit concerned about cache misses with all the pointer chasing we do, but I haven't yet gotten around to profiling different Yatima expressions to measure this. Would be a great project for an OSS contributor too, so I'll probably make a GH issue for it!)
What are some alternatives?
Seed - A Rust framework for creating web apps
matrix.to - A simple stateless privacy-protecting URL redirecting service for Matrix
introit - The Yatima Standard Library
base64-bytestring - Fast base64 encoding and decoding for Haskell.
lunatic - Lunatic is an Erlang-inspired runtime for WebAssembly