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...
impl<O> Iterator for Flatten<O> where O: Iterator, O::Item: IntoIterator, { type Item = <O::Item as IntoIterator>::Item; fn next(&mut self) -> Option<Self::Item> { // self.outer.next().and_then(|inner| inner.into_iter().next()) // simplifying with ? let inner_item =...
( 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:...
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接下来,该文件还定义了一个名为CheckProcMacro的trait,该trait继承自WithSearchPat。它定义了过程宏检查的基本接口,包括方法check_macro用于执行具体的过程宏检查逻辑,并返回检查结果。 此外,该文件还定义了一个名为Pat的枚举。Pat枚举用于表示不同的过程宏检查模式,其包含了以下几个成员:...
I tried this code: https://github.com/PolyMeilex/rfd/tree/0.11.4 with cargo build --example simple --release --no-default-features --features xdg-portal seems like it would basically hang on the following code Box::pin(async { OpenFileRe...
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...
We'll test our function by calling it from the main function with two different argument values, and then check the output:Output Copy Formal: Goodbye. Casual: See you later! Return a valueWhen a function returns a value, we add the syntax -> <type> after the list of function ...
You can try to provoke the same error by removing a semicolon at the end of a statement and then running cargo build in the terminal again. The Rust compiler will also warn you about unused variables to help with better code quality. The screenshot shows warnings for variable definitions,...
As expected, the [SO42−]exp values decrease during the formation of GR(SO42−) between points E1 and E2 and then increase when GR(SO42−) transforms into the mixture {Fe3O4, Fe(OH)2}. The Fe concentrations measured in solution ([Fe]exp) are also situated slightly above the...