High-order Function / Trait: 比如 fn foo(f: &dyn FnOnce(T) -> T) 这种东西。 ownership sharing:包括 interior mutability 和多线程,例如这种东西不可以验证: let something = Arc<Mutex<i32>>::new(Mutex::new(0i32)); let something2 = something.clone(); { std::thread::spawn(move || print...
at ./src/main.rs:914: tools::main at ./src/main.rs:345: core::ops::function::FnOnce::call_once at/Users/lusinga/.rustup/toolchains/stable-x86_64-apple-darwin/lib/rustlib/src/rust/library/core/src/ops/function.rs:227note: Some details are omitted, run with `RUST_BACKTRACE=full`fora...
function: 一个Option<&'a str>类型的字段,表示函数名。如果不可用,则为None。 这个结构体的一个主要作用是提供给panic宏的panic!(...)宏在出现panic时输出更加详细的错误信息,包括panic的文件名、行号、列号和函数名等等。 此外,Location<'a>结构体还定义了一些辅助方法来获取和打印位置信息,包括: fn file(...
error[E0277]: `Rectangle` doesn't implement `Debug` = help: the trait `Debug` is not implemented for `Rectangle` = note: add `#[derive(Debug)]` to `Rectangle` or manually `impl Debug for Rectangle` Rust 有输出调试信息的能力,但我们必须为我们的结构体结构体手动开启它。加入一条外部属性(...
struct,或者 structure,是一个「自定义数据类型」,允许你命名和包装多个相关的值,从而形成一个有意义的组合。
// blanket implementation impl<T: Base> AsBase for T { fn as_base(&self) -> &dyn Base { self } } trait Foo: AsBase { fn foo(&self) { println!("foo.."); } } #[derive(Debug)] struct MyStruct; impl Foo for MyStruct {} ...
egui uses a singleRwLockfor short-time locks on each access ofContextdata. This is to leave implementation simple and transactional and allow users to run their UI logic in parallel. Instead of creating mutex guards, egui uses closures passed to a wrapping function, e.g.ctx.input(|i| i.ke...
Implementation Backtrace Frame Pointer Signal Safety TODO Minimum Supported Rust Version License pprof pprofis a cpu profiler that can be easily integrated into a rust program. Usage First, get a guard to start profiling. Profiling will continue until this guard was dropped. ...
import http from 'k6/http';export default function () {http.get('http://localhost:8080/goods');} 工具：k6（v0.42.0）脚本：每次运行测试的命令都是相同的：k6 run --vus 1000 --duration 30s .\load_testing.js 由于我们将有一个简单的端点，它将以 JSON 格式从 DB 返回数据列表，因此我刚刚...
gfx-rs/wgpu - Native WebGPU implementation based on gfx-hal. OpenGL [opengl] gl-rs - An OpenGL function pointer loader glium/glium - safe OpenGL wrapper. glutin - Alternative to GLFW Kiss3d - draw simple geometric figures and play with them with one-liners PistonDevelopers/glfw-rs - GL...