error[E0733]: recursion in an `async fn` requires boxing --> src/lib.rs:1:22 | 1 | async fn recursive() { | ^ an `async fn` cannot invoke itself directly | = note: a recursive `async fn` must be rewritten to return a boxed future. 我们创建了一个无尽大小的类型,编译器自然不给...
recursion in an `async fn` requires boxing a recursive `async fn` must be rewritten to return a boxed `dyn Future` consider using the `async_recursion` crate: https://crates.io/crates/async_recursion 所以需要添加#[async_recursion]或者改成Box返回。 参数其中多定义了两组HashSet用来存储已处理的...
使用async的方式: 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let...
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` ...
4 changes: 2 additions & 2 deletions 4 tests/ui/type-alias-impl-trait/indirect-recursion-issue-112047.stderr Original file line numberDiff line numberDiff line change @@ -1,11 +1,11 @@ error[E0733]: recursion in an async block requires boxing --> $DIR/indirect-recursion-issue-11204...
为了解决单线程的性能瓶颈,Redis 在 6.0 之前引入了一些优化策略: 异步删除:通过命令 UNLINK 和 FLUSHALL/FLUSHDB ASYNC,Redis 能够将大数据块的删除操作交由后台线程异步执行,从而避免删除大对象时主线程的阻塞。 javascriptcn.com2025/01/0825 Redis 多线程模型的实现与性能优化-JavaScript中文网... ...
This won't work-- we've created an infinitely-sized type! The compiler will complain: 这行不通——我们已经创建了一个无限大的类型!编译器将抱怨: error[E0733]:recursioninan `asyncfn` requires boxing-->src/lib.rs:1:22|1|asyncfnrecursive(){|^an `asyncfn` cannot invoke itself directly|=...
#![feature(impl_trait_in_assoc_type)]4 changes: 2 additions & 2 deletions 4 tests/ui/type-alias-impl-trait/indirect-recursion-issue-112047.stderr Original file line numberDiff line numberDiff line change @@ -1,11 +1,11 @@ error[E0733]: recursion in an async block requires boxing ...