This RFC adds an async bound modifier to the Fn family of trait bounds. The combination desugars to a set of perma-unstable AsyncFn{,Mut,Once} traits that parallel the current Fn{,Mut,Once} traits...
在Rust 当中闭包(closures)算是装有捕获数据的语法糖, 外加一个某个Fn traits 的实现, 以便能够被调用.Generators 和这差不多, 除了它们也实现了 Generator trait [注释4]. 通常generator会保存一个 enum 来表示不同的状态. Unstable book 这本在线书里有些例子, 来展示 generat...
The stdlib has to guarantee it'll forever be backwards compatible, but `async-std` does not (we fully expect a 2.0 once we have async closures & traits). So we're experimenting with this change before `std` does, with the expectation that this change can serve as a data point when ...
This PR implements async/await syntax for async fn in Rust 2015 and async closures and async blocks in Rust 2018 (tracking issue: #50547). Limitations: non-move async closures with arguments are cu...
wasm.wasm_bindgen__convert__closures__invoke2_mut__h3b4ea2930b1ebc90( function __wbg_adapter_78(arg0, arg1, arg2, arg3) { wasm.wasm_bindgen__convert__closures__invoke2_mut__h31d2f059f1e82adf( arg0, arg1, addHeapObject(arg2), @@ -263,9 +262,6 @@ function __wbg_adapter_74(...
{} | ---^^^ | | | `async` because of this | = note: `async` trait functions are not currently supported = note: consider using the `async-trait` crate:https://crates.io/crates/async-trait= note: see issue #91611 <rust-lang/rust#91611> for more information = help: add `#![...