第二种是使用编译器推荐的crate,引入async_recursion crate,可以隐藏复杂度。将代码改写为: use async_recursion::async_recursion; fn main() {} #[async_recursion] async fn recursive() { recursive().await; recursive().await; } 写到这里有感,编写正确代码其实是非常困难的一件事,其中蕴含的复杂度是内...
Recursion[4] 当我们写完一堆异步函数之后,编译器实际上会做处理。把这些个异步函数组装到一起。 比如: // This function: async fn foo() { step_one().await; step_two().await; } // generates a type like this: enum Foo { First(StepOne), Second(StepTwo), } // So this function: async ...
asyncfnget_two_sites_async() {// Create two different "futures" which, when run to completion, 创建两个不同的`future`,你可以把`future`理解为未来某个时刻会被执行的计划任务// will asynchronously download the webpages. 当两个`future`被同时执行后,它们将并发的去下载目标页面letfuture_one=downloa...
I tried this code: asyncfntest_func(){_ = tokio::task::spawn(asyncmove{tokio::time::sleep(std::time::Duration::from_secs(1)).await;test_func().await;});}#[tokio::main]asyncfnmain(){test_func().await;} I expected to see this happen: compile success Instead, this happened: erro...
Support for recursion inasync fn Async functions previously could not call themselves due to a compiler limitation. In 1.77, that limitation has been lifted, so recursive calls are permitted so long as they use some form of indirection to avoid an infinite size for the state of the function....
async-recursion = "0.3.2" 使用 使用方法一(稳定): 在源码根目录执行cargo build --release,之后会在target/release目录下生成sync-nexus2-browse脚本(windows环境为sync-nexus2-browse.exe),启动脚本即可 注意点:脚本需要同级目录下有一个config/log.yaml文件,目的是为了配置脚本打印的日志信息 ...
error[E0733]: recursion in an `async fn` requires boxing --> src/main.rs:4:28 | 4 | async fn recurse(i: usize) { | ^ recursive `async fn` | = note: a recursive `async fn` must be rewritten to return a boxed `dyn Future` ...
1 上述↑比较中仅针对于同步代码, 而 async 异步栈帧有可能被运行时放在堆上. 移动语义 S(1) a t 移动 let a = t; 操作将移动 t 里面的值到 a 的位置, 如果 S 是可Copy 的则复制一份. t 的位置移动后将会失效且不能再被读取. 技术上该位置的比特位并非完全置为 空,但 未定义. 如果你仍...
async Rust using real world patterns that show up consistently when creating non blocking, async, event loops, using channels. Delve into implementing the Future trait and async executor manually. Also explore graceful shutdown, when not to use async, and how to think about testing async code....
"async-recursion", "flate2", "html5ever", "http", "poem-openapi", "regex", "reqwest", "serde", "serde_derive", "serde_json", "tokio", "url 2.3.1", ] [[package]] name = "openidconnect" version = "2.4.0" source = "registry+https://github.com/ru...