Struct futures_util::stream::Peek

pub struct Peek<'a, St: Stream> { /* private fields */ }

Future for the Peekable::peek method.

Trait Implementations

impl<St> Debug for Peek<'_, St>where
    St: Stream + Debug,
    St::Item: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<St: Stream> FusedFuture for Peek<'_, St>

fn is_terminated(&self) -> bool

Returns true if the underlying future should no longer be polled.

impl<'a, St> Future for Peek<'a, St>where
    St: Stream,

type Output = Option<&'a <St as Stream>::Item>

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.

impl<'__pin, 'a, St: Stream> Unpin for Peek<'a, St>where
    __Origin<'__pin, 'a, St>: Unpin,