与 Poll 类似的枚举，但在其 Pending 变体中包含一个未来

示例

use futures_lite::future;
use futures_polling::{FuturePollingExt, Polling};

let mut polling = async {
    future::yield_now().await;
    42
}.polling();

assert_eq!(polling.is_pending(), true);

// Poll just once.
polling.polling_once().await;
assert_eq!(polling.is_pending(), true);

// Poll until the inner future is ready.
assert_eq!(polling.await, 42);

许可证

此源代码形式受 Mozilla 公共许可证第 2.0 版的条款约束。如果未随此文件分发 MPL 的副本，您可以在此获取一份：http://mozilla.org/MPL/2.0/。

lib.rs:

类似于 Poll 的枚举，但在其 Pending 变体中包含一个 未来。

示例

use futures_lite::future;
use futures_polling::{FuturePollingExt, Polling};

#
let mut polling = async {
    future::yield_now().await;
    42
}.polling();

assert_eq!(polling.is_pending(), true);

// Poll just once.
polling.polling_once().await;
assert_eq!(polling.is_pending(), true);

// Poll until the inner future is ready.
assert_eq!(polling.await, 42);
#