{
  "$type": "site.standard.document",
  "bskyPostRef": {
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    "uri": "at://did:plc:ivbknywyskln22er3nkssdhl/app.bsky.feed.post/3mhafuyvxp2h2"
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  "path": "/t/private-lifetime-inference/24088#post_4",
  "publishedAt": "2026-03-16T21:26:36.000Z",
  "site": "https://internals.rust-lang.org",
  "tags": [
    "Playground"
  ],
  "textContent": "redradist:\n\n> **Closures already do this.** `|x: &str, y: &str| -> &str { x }` infers lifetimes from the body.\n\nDoes it?\n\n\n    error: lifetime may not live long enough\n     --> src/main.rs:2:34\n      |\n    2 |     |x: &str, y: &str| -> &str { x };\n      |         -                 -      ^ returning this value requires that `'1` must outlive `'2`\n      |         |                 |\n      |         |                 let's call the lifetime of this reference `'2`\n      |         let's call the lifetime of this reference `'1`\n\n\nPlayground",
  "title": "Private lifetime inference"
}