stream_from_iter

trpl

Function stream_from_iter 

Source 
pub fn stream_from_iter<I>(i: I) -> Iter<<I as IntoIterator>::IntoIter>
where
    I: IntoIterator,
Expand description

Converts an Iterator into a Stream which is always ready to yield the next value.

Iterators in Rust don’t express the ability to block, so this adapter simply always calls iter.next() and returns that.

use tokio_stream::{self as stream, StreamExt};

let mut stream = stream::iter(vec![17, 19]);

assert_eq!(stream.next().await, Some(17));
assert_eq!(stream.next().await, Some(19));
assert_eq!(stream.next().await, None);