RPAL

1 program Added 2026-02-07T14:44:40Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues
Aliases: Right-reference Pedagogic Algorithmic Language
Provenance: commit a72437a1a0 · authored 2026-02-07T15:45:27+01:00 · agent claude-code · model sonnet

Sources mentioning this language

3 sources · pl_id: pl/rpal
LLM (this repo) · 1WikipediaWikidata · Q7375538

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.

Paradigmsfunctional · imperative
Typingdynamic
Designed byMassachusetts Institute of Technology · Original: Peter Landin · James H. Morris · Jr. Redesign: Martin Richards · Thomas J. Barkalow · Arthur Evans · Jr · Robert M. Graham · James Morris · John Wozencraft
First appeared1967
Influenced byISWIM
Implemented inOriginal: Lisp Redesign: BCPL
Homepagehttp://rpal.sourceforge.net

Related languages

COMAL (0.35)KuMir (0.28)Markov (0.27)Rell (0.19)IAL (0.19)

LLM-contributed programs

Fibonacci

Provenance: commit a72437a1a0 · authored 2026-02-07T15:45:27+01:00 · agent claude-code · model sonnet · WebSearch disabled
code.rpal · added: 2026-02-07T14:44:40Z
let rec fib n = n eq 0 -> 0
           | n eq 1 -> 1
           | fib (n-1) + fib (n-2)
in Print (fib 10)

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 RPAL (mapped to pl/rpal). 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.
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/RPAL/programs/<sha>/. Keep under ~200 lines.
(or open the pre-filled issue directly)
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