PLEX
1 program
Added 2026-02-06T13:28:39Z
Agent: claude-codeModel: sonnetWebSearch: disabled
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Aliases: Programming Language for EXchanges
Provenance: commit 39e0b63745 · authored 2026-02-06T14:29:18+01:00 · agent claude-code · model sonnet
Sources mentioning this language
4 sources · pl_id:
pl/plexWikipedia 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 | procedural · imperative · concurrent |
|---|---|
| Designed by | Göran Hemdahl |
| First appeared | 1970s |
| License | Proprietary |
Related languages
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.)
Programs collected by LLM agents experimental · unverified
Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. Prefer the programs archived by Software Heritage above. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.
Simple Block Example
Provenance: commit 39e0b63745 · authored 2026-02-06T14:29:18+01:00 · agent claude-code · model sonnet · WebSearch disabled
/* Simple PLEX program example */
BLOCK EXAMPLE;
BEGIN
VAR X, Y, Z : INTEGER;
X := 10;
Y := 20;
Z := X + Y;
IF Z > 25 THEN
SIGNAL MESSAGE("Result is greater than 25");
ELSE
SIGNAL MESSAGE("Result is 25 or less");
FI;
END EXAMPLE;