Struct transform_stream::AsyncTryStream

pub struct AsyncTryStream<T, E, G = BoxFuture<'static, Result<(), E>>> { /* fields omitted */ }

Asynchronous stream of results

Implementations

impl<T, E, G> AsyncTryStream<T, E, G> where
    G: Future<Output = Result<(), E>>, 

pub fn new<F>(f: F) -> Self where
    F: FnOnce(Yielder<Result<T, E>>) -> G, 

Constructs an AsyncTryStream by a factory function which returns a future.

impl<'a, T, E> AsyncTryStream<T, E, BoxFuture<'a, Result<(), E>>>

pub fn new_boxed<F, G>(f: F) -> Self where
    F: FnOnce(Yielder<Result<T, E>>) -> G,
    G: Future<Output = Result<(), E>> + Send + 'a,
    E: 'a, 

Constructs an AsyncTryStream by a factory function which returns a future.

The G is wrapped as an owned dynamically typed Future which allows you to write the type.

Trait Implementations

impl<T, E, G> FusedStream for AsyncTryStream<T, E, G> where
    G: Future<Output = Result<(), E>>, 

fn is_terminated(&self) -> bool

Returns true if the stream should no longer be polled.

impl<T, E, G> Stream for AsyncTryStream<T, E, G> where
    G: Future<Output = Result<(), E>>, 

type Item = Result<T, E>

Values yielded by the stream.

fn poll_next(
    self: Pin<&mut 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.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream.

impl<'__pin, T, E, G> Unpin for AsyncTryStream<T, E, G> where
    __Origin<'__pin, T, E, G>: Unpin,