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摘要：https://docs.rs/atomic_enum/latest/atomic_enum/ #[atomic_enum] #[derive(PartialEq)] enum CatState { Dead = 0, BothDeadAndAlive, Alive, } let state = A 阅读全文

摘要：/// Returns a mutable reference into the given `Arc`, if there are /// no other `Arc` or [`Weak`] pointers to the same allocation. /// /// Returns [`N 阅读全文