Trait futures::stream::TryStream

source ·
pub trait TryStream: Stream + Sealed {
    type Ok;
    type Error;

    // Required method
    fn try_poll_next(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>
    ) -> Poll<Option<Result<Self::Ok, Self::Error>>>;
}
Expand description

A convenience for streams that return Result values that includes a variety of adapters tailored to such futures.

Required Associated Types§

source

type Ok

The type of successful values yielded by this future

source

type Error

The type of failures yielded by this future

Required Methods§

source

fn try_poll_next( self: Pin<&mut Self>, cx: &mut Context<'_> ) -> Poll<Option<Result<Self::Ok, Self::Error>>>

Poll this TryStream as if it were a Stream.

This method is a stopgap for a compiler limitation that prevents us from directly inheriting from the Stream trait; in the future it won’t be needed.

Implementors§

source§

impl<S, T, E> TryStream for S
where S: Stream<Item = Result<T, E>> + ?Sized,

§

type Ok = T

§

type Error = E