Trait futures_concurrency::stream::StreamExt

source · [−]
pub trait StreamExt: Stream {
    fn merge<S1>(self, other: S1) -> Box<dyn Stream<Item = Self::Item> + Unpin>
    where
        Self: Sized + 'static,
        S1: Stream<Item = Self::Item> + 'static,
    { ... }
}
Expand description

Extend Stream with concurrency methods.

Provided methods

Combines multiple streams into a single stream of all their outputs.

Items are yielded as soon as they’re received, and the stream continues yield until both streams have been exhausted. The output ordering between streams is not guaranteed.

Examples
use futures::stream::StreamExt;
use futures_concurrency::prelude::*;
use futures_lite::future::block_on;
use futures_lite::stream;

fn main() {
    block_on(async {
        let a = stream::once(1u8);
        let b = stream::once(2u8);
        let mut s = a.merge(b);

        let mut buf = vec![];
        while let Some(n) = s.next().await {
            buf.push(n);
        }
        buf.sort_unstable();
        assert_eq!(&buf, &[1u8, 2u8]);
    })
}

Implementors