Бабушка, смотри, я сделал двач! Войти !bnw Сегодня Клубы
О, clippy в стабильный компилятор завезли: https://blog.rust-lang.org/2018/09/13/Rust-1.29.html "cargo clippy Speaking of warnings, you can now check out a preview of cargo clippy through Rustup. Clippy is a large number of additional warnings that you can run against your Rust code. For example: let mut lock_guard = mutex.lock(); std::mem::drop(&lock_guard) operation_that_requires_mutex_to_be_unlocked(); This code is syntactically correct, but may have a deadlock! You see, we dropped a reference to lock_guard, not the guard itself. Dropping a reference is a no-op, and so this is almost certainly a bug. We can get the preview of Clippy from Rustup: $ rustup component add clippy-preview and then run it: $ cargo clippy error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. --> src\main.rs:5:5 | 5 | std::mem::drop(&lock_guard); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: #[deny(drop_ref)] on by default note: argument has type &std::result::Result<std::sync::MutexGuard<&#39;_, i32>, std::sync::PoisonError<std::sync::MutexGuard<&#39;_, i32>>> --> src\main.rs:5:20 | 5 | std::mem::drop(&lock_guard); | ^^^^^^^^^^^ = help: for further information visit https://rust-lang-nursery.github.io/rust-clippy/v0.0.212/index.html#drop_ref As you can see from that help message, you can view all of the lints that clippy offers on the web. Please note that this is a preview; clippy has not yet reached 1.0. As such, its lints may change. We’ll release a clippy component once it has stabilized; please give the preview a try and let us know how it goes."
#RJRN61 / @o01eg / 62 дня назад

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