{
  "$type": "site.standard.document",
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  "path": "/t/make-derive-copy-enough-for-both-clone-and-copy/24371#post_18",
  "publishedAt": "2026-06-07T01:15:54.000Z",
  "site": "https://internals.rust-lang.org",
  "textContent": "HKalbasi:\n\n> That is, if we were going to design a Rust-like language today, I think having `#[derive(Eq)]` is clearly a better choice than `#[derive(PartialEq, Eq)]`.\n\nI disagree: I might have valid reasons to have custom code in `eq()` but `Eq` is still the same. In fact I did that in the past and also saw it in other places.\n\nBut even if this is true, As you yourself said that making this change _now_ is a whole different matter. And saving typing 7 letters does not justify a serious language and compiler complexity, even not considering all negative effects others have cited, IMO.",
  "title": "Make `#[derive(Copy)]` enough for both `Clone` and `Copy`"
}