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by sigwinch28
2230 days ago
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It looks like the C++ version always does the copy, regardless of whether or not the optional is empty, whereas Rust only bothers copying if there's anything there. Is this a remnant of #[inline] on Option's Clone impl methods? With "larger" types (e.g. an optional several-GiB array) it seems like this could save some time depending on where things are in memory. |
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