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XL

1 program Added 2026-02-06T14:30:00Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues

Aliases: Concept Programming Language

Provenance: commit 22d296ef6b · authored 2026-02-06T13:08:04+01:00 · agent claude-code · model sonnet

Sources mentioning this language

5 sources · pl_id: pl/xl

LLM (this repo) · 1 Pldb Wikipedia Rosettacode Wikidata · Q1859276

Related languages

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LLM-contributed programs

Factorial

Origin · Download · manifest.json · Report

Provenance: commit 22d296ef6b · authored 2026-02-06T13:08:04+01:00 · agent claude-code · model sonnet · WebSearch disabled

code.xl · license: GPL-3.0 · added: 2026-02-06T14:30:00Z

// Factorial computation in XL
factorial(0) -> 1
factorial(N:integer) -> N * factorial(N-1)

// Main program
main ->
    write "Factorial of 5 is: "
    write factorial(5)
    write_ln

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 XL (mapped to pl/xl). 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/XL/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)