{
  "title": "Factorial with Tail Recursion",
  "origin_url": "https://mitp-content-server.mit.edu/books/content/sectbyfn/books_pres_0/6515/sicp.zip/full-text/book/book-Z-H-11.html",
  "license_guess": null,
  "code_sha256": "8df68210d3f8f3378ad26c30464aacb5f0cbd51c5040f98fbf1a25157c1a7b42",
  "added_at": "2026-02-10T12:20:27Z"
}