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J (programming language)

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Aliases: J, j

Sources mentioning this language

4 sources · pl_id: pl/j-programming-language

Pygments Wikipedia Hyperpolyglot Wikidata · Q383994

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	array · functional · object-oriented (class-based · prototype-based) · function-level · tacit
Typing	dynamic
Designed by	JSoftware · Kenneth E. Iverson Roger Hui
First appeared	1990
Influenced by	APL
License	GPLv3
Homepage	http://www.jsoftware.com

Extensions claimed by this language

1 claim. Each row is one upstream assertion with its strength. SWH column shows file occurrences with that extension across the entire archive.

Extension	Source	Strength	SWH
`.ijs`	pygments	primary	51.5K files

Programs

No programs recorded for this language yet.

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.)

Contribute — propose a file extension

Tell us where to find evidence about J (programming language) (mapped to pl/j-programming-language). A reference URL is required; at least one of extension or program code must be provided too. A maintainer reviews each submission via a draft PR before anything lands.

File extension (optional) — e.g. .oak. Some PLs (e.g. esolangs) have no convention; leave empty if so. Friendly name (optional)

Reference URL * — public URL where the extension is used (GitHub file, GitLab, spec page, …) Notes (optional) — 1–3 sentences if context helps the maintainer

Optional: attach a program from that URL

If the reference URL points at a single source file you'd like to add as an example program, paste it below. The workflow will write it under languages/J__programming_language/programs/<sha>/. Keep under ~200 lines.

Title (optional) — e.g. "Factorial", "Quicksort" License guess (optional) — MIT, GPL-2.0, …

Code (optional) — paste verbatim bytes from the reference URL

(or open the pre-filled issue directly)