【Rust日报】 2019-09-27：async-std v0.99.7 released

use pin_project::pin_project;
use std::pin::Pin;

#[pin_project]
struct Struct<T, U> {
    #[pin]
    pinned: T,
    unpinned: U,
}

impl<T, U> Struct<T, U> {
    fn foo(self: Pin<&mut Self>) {
        let this = self.project();
        let _: Pin<&mut T> = this.pinned; // Pinned reference to the field
        let _: &mut U = this.unpinned; // Normal reference to the field
    }
}

use async_std::future;

let a = future::ready(1);
let b = future::ready(2);
let c = future::ready(3);

let f = future::join!(a, b, c);
assert_eq!(f.await, (1, 2, 3));