之所以没有设计为 trait 形式,主要是 clone 函数,受限于 Rust 的 trait object safety,trait 中的任何函数的参数或返回值如果包含 Self 且有 type bound Sized,则不符合 trait object safe 规范,这样的 trait 可以被定义,可以被实现,但是无法与 dyn 一起进行动态绑定。 而clo
之所以没有设计为 trait 形式,主要是 clone 函数,受限于 Rust 的 trait object safety,trait 中的任何函数的参数或返回值如果包含 Self 且有 type bound Sized,则不符合 trait object safe 规范,这样的 trait 可以被定义,可以被实现,但是无法与 dyn 一起进行动态绑定。 而clones 函数又是必须的,因为 future 可...
@sunli829It's a good test - it fails because it's new, and shows a real behavioral change. The test doesn't pass becauseimpl Futureare not object-safe, so one can't use dyn any more (this is why extensions/directives are still usingasync_traitin this PR). Right now, unfortunately,...
traitFuture{typeOutput;fnpoll(// Note the change from `&mut self` to `Pin<&mut Self>`: 首先值得注意的地方是,`self`的类型从`&mut self`变成了`Pin<&mut Self>`:self: Pin<&mutSelf>,// and the change from `wake: fn()` to `cx: &mut Context<'_>`: 其次将`wake: fn()` 修改为...
[forbid(unsafe_code)]to ensure everything is implemented in 100% safe Rust. Static schema usestd::error::Error;useasync_graphql::{http::GraphiQLSource, EmptyMutation, EmptySubscription, Object, Schema};useasync_graphql_poem::*;usepoem::{listener::TcpListener, web::Html, *};structQuery;#...
[forbid(unsafe_code)]to ensure everything is implemented in 100% safe Rust. Static schema usestd::error::Error;useasync_graphql::{http::GraphiQLSource,EmptyMutation,EmptySubscription,Object,Schema};useasync_graphql_poem::*;usepoem::{listener::TcpListener,web::Html,*};structQuery;#[Object]...
pub traitFuture {typeOutput;fnpoll(self: Pin<&mut Self>, cx:&mutContext) -> Poll<Self::Output>;} Theassociated typeOutputspecifies the type of the asynchronous value. For example, theasync_read_filefunction in the diagram above would return aFutureinstance withOutputset toFile. ...
Tout d'abord, il n'y a aucun moyen de savoir quand l'initialisation terminée ; Deuxièmement, toute exception de l'initialisation est traitées de la manière Sub async habituel, couramment planter l'application. Si InitializeAsync a été la tâche asynchrone au lieu...
What's nice about this is that unlike other runtimes, where interest is registered on the object, here we merely register interest on an operation. That means that "wait for this operation to be ready" is a matter of calling reactor.wait_for(pollable).await. That is significantly different...
之所以没有设计为 trait 形式,主要是 clone 函数,受限于 Rust 的 trait object safety,trait 中的任何函数的参数或返回值如果包含 Self 且有 type bound Sized,则不符合 trait object safe 规范,这样的 trait 可以被定义,可以被实现,但是无法与 dyn 一起进行动态绑定。