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oneshot: update closed() docs to use tokio::select! (#3050)

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Alice Ryhl 2020-10-26 11:44:46 +01:00 committed by GitHub
parent 1c28c3b0a8
commit a9da220923
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1 changed files with 6 additions and 6 deletions
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12
tokio/src/sync/oneshot.rs
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@ -285,8 +285,6 @@ impl<T> Sender<T> {
/// use tokio::sync::oneshot;
/// use tokio::time::{self, Duration};
///
/// use futures::{select, FutureExt};
///
/// async fn compute() -> String {
/// // Complex computation returning a `String`
/// # "hello".to_string()
@ -297,12 +295,14 @@ impl<T> Sender<T> {
/// let (mut tx, rx) = oneshot::channel();
///
/// tokio::spawn(async move {
/// select! {
/// _ = tx.closed().fuse() => {
/// tokio::select! {
/// _ = tx.closed() => {
/// // The receiver dropped, no need to do any further work
/// }
/// value = compute().fuse() => {
/// tx.send(value).unwrap()
/// value = compute() => {
/// // The send can fail if the channel was closed at the exact same
/// // time as when compute() finished, so just ignore the failure.
/// let _ = tx.send(value);
/// }
/// }
/// });