TryStream in futures_core::stream - Rust (original) (raw)

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.

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The type of successful values yielded by this future

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The type of failures yielded by this future

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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.