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The final pieces of the story for (single-threaded) memory management in Rust. Sometimes, we actually do need to copy types. Wouldn’t it be nice if Rust gave us a convenient way to do that when it’s convenient, or when the cost is low enough that the ergonomic tradeoffs are worth it? Well, perhaps unsurprisingly, it does! The Copy and Clone traits, plus the Cow type, give us everything we need!

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