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Constraint Handling Rules

1 program Added 2026-02-05T21:17:01Z Evidence Report issue View issues

Aliases: CHR

Sources mentioning this language

5 sources · pl_id: pl/chr

LLM (this repo) · 1 Wikipedia Esolang Rosettacode Wikidata · Q5164373

Wikipedia infobox ↗

Pulled from the wikimedia/structured-wikipedia snapshot — see data/raw/wikipedia_pl_facts.*.jsonl and pl_fact.csv for the long-table provenance.

Paradigms	constraint logic · declarative
Designed by	Thom Frühwirth
First appeared	1991
Influenced by	Prolog

Related languages

CHR (0.88)CHIP (0.46)cKanren (0.26)CLP(R) (0.20)OCL (0.19)

LLM-contributed programs

LEQ constraint solver (CHR rules)

Origin · Download · manifest.json · Report

code.chr · license: CC BY-SA 4.0 · added: 2026-02-05T21:17:01Z

handler leq.
rules
leq(X,Y) \ leq(X,Y) <=> true.
leq(X,X) <=> true.
leq(X,Y), leq(Y,X) <=> X=Y.
leq(X,Y), leq(Y,Z) ==> leq(X,Z).

Real programs from Software Heritage

No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)

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