{
  "$type": "site.standard.document",
  "bskyPostRef": {
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    "uri": "at://did:plc:pi6woz4d47bkuws673w2il2r/app.bsky.feed.post/3mlr7x5taoye2"
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  "path": "/t/knownnat-indexed-vectors/14099#post_9",
  "publishedAt": "2026-05-13T19:14:10.000Z",
  "site": "https://discourse.haskell.org",
  "textContent": "As long as you don’t expose the constructor(s), all types are like interfaces rather than implementation. Backpack makes this distinction even clearer.",
  "title": "KnownNat-indexed vectors"
}