Struct futures_util::try_stream::MapErr

#[must_use = "streams do nothing unless polled"]
pub struct MapErr<St, F> { /* fields omitted */ }

Stream for the map_err combinator.

Trait Implementations

impl<St: Debug, F: Debug> Debug for MapErr<St, F>

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

Formats the value using the given formatter.

impl<St: Unpin, F> Unpin for MapErr<St, F>

impl<St, F, E> Stream for MapErr<St, F> where     St: TryStream,     F: FnMut(St::Error) -> E,

type Item = Result<St::Ok, E>

Values yielded by the stream.

fn poll_next(self: PinMut<Self>, cx: &mut Context) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted.