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ekzhang
crepe
Rust2020–2024
ekzhang / crepe

crepe

Datalog compiler embedded in Rust as a procedural macro

3Distinct people
3Mentions
0Explicit recommenders
537GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Datalog compiler embedded in Rust as a procedural macro

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year3 dated mentions

Observed mentions: 2020-09-02 15:22:04 UTC to 2024-01-22 17:05:16 UTC.

012020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2024

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC110
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC000
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC101
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC101

What Hacker News says

3 sources
"Introduction to Datalog" re: Linked Data https://news.ycombinator.com/context?id=34808887 pyDatalog/examples/SQLAlchemy.py: https://github.com/baojie/pydatalog/blob/master/pyDatalog/ex... GH topics > datalog: https://github.com/topics/datalog datalog?l=rust: https://github.com/topics/datalog?l=rust ... Cozo, Crepe Crepe: https://github.com/ekzhang/crepe : > Crepe is a library that allows you to write declarative logic programs in Rust, with a Datalog-like syntax. It provides a procedural macro that generates efficient, safe code and interoperates seamlessly with Rust programs. Looks like there's not yet a Python grammar for the treeedb tree-sitter: https://github.com/langston-barrett/treeedb : > Generate Soufflé Datalog types, relations, and facts that represent ASTs from a variety of programming languages. Looks like roxi supports n3,
Read the rest
which adds `=>` "implies" to the Turtle lightweight RDF representation: https://github.com/pbonte/roxi FWIW rdflib/owl-rl: https://owl-rl.readthedocs.io/en/latest/owlrl.html : > simple forward chaining rules are used to extend (recursively) the incoming graph with all triples that the rule sets permit (ie, the “deductive closure” of the graph is computed). ForwardChainingStore and BackwardChainingStore implementations w/ rdflib in Python: https://github.com/RDFLib/FuXi/issues/15 Fast CUDA hashmaps Gdlog is built on CuCollections. GPU HashMap libs to benchmark: Warpcore, CuCollections, https://github.com/NVIDIA/cuCollections https://github.com/NVIDIA/cccl https://github.com/sleeepyjack/warpcore /? Rocm HashMap DeMoriarty/DOKsparse: https://github.com/DeMoriarty/DOKSparse /? SIMD hashmap Google's SwissTable: https://github.com/topics/swisstable rust-lang/hashbrown: https://github.com/rust-lang/hashbrown CuPy has array but not yet hashmaps, or (GPU) SIMD FWICS? NumPy does SIMD: https://numpy.org/doc/stable/reference/simd/ google/highway: https://github.com/google/highway xtensor-stack/xsimd: https://github.com/xtensor-stack/xsimd GH topics > HashMap: https://github.com/topics/hashmap
In GDlog: A GPU-accelerated deductive engine

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