Hope

1 program Added 2025-10-28T06:45:21Z Model: google/gemini-2.5-proTemp: 0.4 Evidence Report issue View issues
Aliases: —
Provenance: commit b9ac925f87 · authored 2025-10-28T07:45:21+01:00 · model google/gemini-2.5-pro

Sources mentioning this language

5 sources · pl_id: pl/hope
LLM (this repo) · 1PldbWikipediaRosettacodeWikidata · Q4040754

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
Designed byUniversity of Edinburgh · Rod Burstall D. B. MacQueen Don Sannella
First appeared1980
Influenced byNPL

Related languages

Rhope (0.44)Hopper (0.27)Pyrope (0.27)Hope+ (0.25)Hopscotch (0.21)

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.

Quicksort and Insertion Sort in Hope

Provenance: commit b9ac925f87 · authored 2025-10-28T07:45:21+01:00 · model google/gemini-2.5-pro · Temp 0.4
code.hop · license: MIT · added: 2025-10-28T06:45:21Z
module sort;

public qsort, isort;

dec qsort : list(num) -> list(num);
--- qsort(nil) <= nil;
--- qsort(x :: l) <= qsort(filter((<=x), l)) <> (x :: qsort(filter((>x), l)));

dec filter : (num->truval) # list(num) -> list(num);
--- filter(p, nil) <= nil;
--- filter(p, x::l) <= if p(x) then x::filter(p,l) else filter(p,l);

dec isort : list(num) -> list(num);
--- isort(nil) <= nil;
--- isort(x::l) <= insert(x, isort(l));

dec insert : num # list(num) -> list(num);
--- insert(x, nil) <= x::nil;
--- insert(x, y::l) <= if x<=y then x::y::l else y::insert(x,l);

end;

Contribute — propose a file extension

Tell us where to find evidence about Hope (mapped to pl/hope). 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/Hope/programs/<sha>/. Keep under ~200 lines.
(or open the pre-filled issue directly)
← Hop Hope+ →