{
  "$type": "site.standard.document",
  "bskyPostRef": {
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    "uri": "at://did:plc:ivbknywyskln22er3nkssdhl/app.bsky.feed.post/3mizfgvhxx3h2"
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  "path": "/t/q-why-do-match-expression-need-parenthesis-for-ops-to-the-right-but-not-left/24126#post_5",
  "publishedAt": "2026-04-08T18:59:27.000Z",
  "site": "https://internals.rust-lang.org",
  "textContent": "This is probably a somewhat stupid question, but why does `match` (or `if` for that mapneed a statement form at all? Why can't it just be expression whose value is discarded if used with a `;`?\n\nDo things like\n\n\n    let foo;\n    match bar {\n        Some(_) => foo = 1;\n        None => foo = 0;\n    }\n    // foo is now initialized\n\n\nnot work with expressions? I suppose I've never tried, but I don't immediately see a strong reason they couldn't.\n\nEDIT: sorry I've realized I just answered my own question, it's so that they can used _without_ a `;` that they have a statement form, I got tripped up by the context.",
  "title": "Q: Why do match expression need parenthesis for ops to the right but not left?"
}