1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
//@ aux-build:block-on.rs
//@ edition: 2021
//@ known-bug: #133119
#![allow(refining_impl_trait)]
#![feature(async_fn_in_dyn_trait)]
extern crate block_on;
use std::pin::Pin;
use std::future::Future;
trait AsyncTrait {
async fn async_dispatch(&self);
}
impl AsyncTrait for &'static str {
fn async_dispatch(&self) -> Pin<Box<impl Future<Output = ()>>> {
Box::pin(async move {
println!("message from the aether: {self}");
})
}
}
fn main() {
block_on::block_on(async {
let x: &dyn AsyncTrait = &"hello, world!";
x.async_dispatch().await;
});
}
|
