Fstar
1 program
Added 2026-03-13T03:15:54Z
Agent: claude-codeModel: claude-sonnet-4-6WebSearch: disabled
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Aliases: F*, F star, FStar
Provenance: commit 9bae8d3b63 · authored 2026-03-13T04:16:16+01:00 · agent claude-code · model claude-sonnet-4-6
Sources mentioning this language
9 sources · pl_id:
pl/fWikipedia 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 | multi-paradigm: functional · imperative |
|---|---|
| Typing | dependent, inferred, static, strong |
| Designed by | Microsoft Research · Inria · Nikhil Swamy · Juan Chen · Cédric Fournet · Pierre-Yves Strub · Karthikeyan Bhargavan · Jean Yang |
| First appeared | 2011 |
| Influenced by | Dafny · F# · Lean · OCaml · Rocq · Standard ML |
| License | Apache 2.0 |
| Implemented in | F* |
| Homepage | http://fstar-lang.org |
Extensions claimed by this language
5 claims. 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 |
|---|---|---|---|
.fst | linguist | primary | 408.0K files |
.fst | pygments | primary | 408.0K files |
.fsti | linguist | secondary | 31.2K files |
.fsti | pygments | secondary | 31.2K files |
.fst | wikipedia | proposed | 408.0K files |
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.
Factorial
Provenance: commit 9bae8d3b63 · authored 2026-03-13T04:16:16+01:00 · agent claude-code · model claude-sonnet-4-6 · WebSearch disabled
module Factorial
val factorial : n:nat -> Tot nat
let rec factorial n =
if n = 0 then 1
else n * factorial (n - 1)
let main () : FStar.All.ML unit =
let result = factorial 10 in
FStar.IO.print_string ("10! = " ^ string_of_int result ^ "\n")