1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
use core::pin::Pin;
use futures_core::stream::Stream;
use futures_core::task::{Context, Poll};
#[derive(Debug)]
#[must_use = "streams do nothing unless polled"]
pub struct Iter<I> {
iter: I,
}
impl<I> Unpin for Iter<I> {}
pub fn iter<I>(i: I) -> Iter<I::IntoIter>
where I: IntoIterator,
{
Iter {
iter: i.into_iter(),
}
}
impl<I> Stream for Iter<I>
where I: Iterator,
{
type Item = I::Item;
fn poll_next(mut self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Option<I::Item>> {
Poll::Ready(self.iter.next())
}
}