then_with(|| Ordering::Greater); assert_eq!(result, Ordering::Less); let result = Ordering::Equal.then_with(|| Ordering::Equal); assert_eq!(result, Ordering::Equal); let x: (i64, i64, i64) = (1, 2, 7); let y: (i64, i64, i64) = (1, 5, 3); let result = x.0...
( unsafe { sys::napi_call_threadsafe_function( self.handle.get_raw(), Box::into_raw(Box::new(value.map(|data| { ThreadsafeFunctionCallJsBackData { data, call_variant: ThreadsafeFunctionCallVariant::WithCallback, callback: Box::new(move |d: Result| { sender .send(d.and_then(|d| D:...
rust/src/tools/rust-analyzer/crates/ide-assists/src/handlers/convert_bool_then.rs是Rust的工具rust-analyzer中的一个文件。该文件中的代码实现了一个叫做convert_bool_then的辅助函数。其作用是在适当的情况下将一个if语句转换为if let语句。 在Rust中,if语句用于条件判断,根据条件的布尔值来执行不同的代码分...
205. Get an environment variable Read an environment variable with the name "FOO" and assign it to the string variable foo. If it does not exist or if the system does not support environment variables, assign a value of "none". 获取环境变量 代码语言:javascript 复制 packagemainimport("fmt"...
Then you can change into the RustPython directory and run the demo (Note:--releaseis needed to prevent stack overflow on Windows): $cdRustPython $ cargo run --release demo_closures.py Hello, RustPython! Or use the interactive shell: ...
Build Postgres Extensions with Rust! Contribute to pgcentralfoundation/pgrx development by creating an account on GitHub.
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If you design the GUI with this in mind and refrain from huge scroll areas (or only lay out the part that is in view) then the performance hit is generally pretty small. For most cases you can expecteguito take up 1-2 ms per frame, buteguistill has a lot of room for optimization...
External iterators are more flexible than internal iterators. It's easy to compare two collections for equality with an external iterator, for example, but it's practically impossible with internal iterators. Internal iterators are especially weak in a language like C++ that does not provide anonymou...
File: rust/src/tools/clippy/clippy_lints/src/methods/iter_with_drain.rs 文件iter_with_drain.rs位于Rust源代码中的clippy工具的lints目录下,用于实现与iter()方法和drain()方法的使用相关的代码检查和警告。 这个文件实现了一个名为ITER_NEXT_SLICE的Lint,用于检测可能无效的使用方式。如果在代码中发现了对it...