Datafun

1 program Added 2026-02-13T15:30:45Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues
Aliases: —
Provenance: commit dc7d336de8 · authored 2026-02-13T16:31:23+01:00 · agent claude-code · model sonnet

Sources mentioning this language

2 sources · pl_id: pl/datafun
LLM (this repo) · 1Pldb

Related languages

DataFlex (0.36)Datalog (0.29)DATR (0.25)Dawn (0.25)NFun (0.25)

LLM-contributed programs

Transitive Closure

Provenance: commit dc7d336de8 · authored 2026-02-13T16:31:23+01:00 · agent claude-code · model sonnet · WebSearch disabled
code.df · added: 2026-02-13T15:30:45Z
# Transitive closure using fixed-point iteration
type edge = {src: nat, dst: nat}

# Given a set of edges, compute the transitive closure
fun trans_closure (edges: {edge}): {edge} =
  fix path = edges ∪ (for (e1 in path) (e2 in path)
                        when e1.dst = e2.src
                        {src = e1.src, dst = e2.dst})
  in path

# Example: compute transitive closure of a simple graph
let test_edges = {{src=1, dst=2}, {src=2, dst=3}, {src=3, dst=4}}
let result = trans_closure test_edges

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 Datafun (mapped to pl/datafun). 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/Datafun/programs/<sha>/. Keep under ~200 lines.
(or open the pre-filled issue directly)
← DataFlex datalisp →