Cur

Aliases: —

Provenance: commit 6e291febad · authored 2026-02-13T10:57:45+01:00 · agent claude-code · model sonnet

1 source · not in taxonomy (canonical name didn't match any upstream)

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. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

#lang cur

(define-type Nat
  (data
    [z : Nat]
    [s : (-> Nat Nat)]))

(define-term plus : (-> Nat (-> Nat Nat))
  (lambda (m n)
    (elim Nat
      (lambda (_) Nat)
      n
      (lambda (_ ih) (s ih))
      m)))

(define-term two : Nat
  (s (s z)))

(define-term four : Nat
  (plus two two))