{
  "$type": "site.standard.document",
  "bskyPostRef": {
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    "uri": "at://did:plc:ivbknywyskln22er3nkssdhl/app.bsky.feed.post/3mfmprbotcu22"
  },
  "path": "/t/what-s-where-size-kind-extra/23987#post_8",
  "publishedAt": "2026-02-24T17:21:04.000Z",
  "site": "https://internals.rust-lang.org",
  "textContent": "Oh no noes! Back from holiday, with Rust 1.93 I can’t validate your optimism. Each of the three `A + B` exprs gives me both “cannot perform const operation using `A`” and “cannot perform const operation using `B`”.\n\nSo you say something about only being stable for slices? How exactly do you mean that? And under what circumstances would those slices be optimised away, i.e. zero-cost?",
  "title": "What’s where [(); SIZE + Kind::EXTRA]:?"
}