No need for a custom impl for FromIter for DoubleEndedStream

Author: felipesere

src/stream/double_ended_stream/from_iter.rs

@@ -3,14 +3,12 @@ use crate::stream::Stream;
 use std::pin::Pin;
 use std::task::{Context, Poll};
 
-mod from_iter;
 mod next_back;
 mod nth_back;
 mod rfind;
 mod rfold;
 mod try_rfold;
 
-pub use from_iter::{from_iter, FromIter};
 use next_back::NextBackFuture;
 use nth_back::NthBackFuture;
 use rfind::RFindFuture;

src/stream/double_ended_stream/mod.rs

@@ -3,6 +3,8 @@ use std::pin::Pin;
 use pin_project_lite::pin_project;
 
 use crate::stream::Stream;
+#[cfg(feature = "unstable")]
+use crate::stream::double_ended_stream::DoubleEndedStream;
 use crate::task::{Context, Poll};
 
 pin_project! {
@@ -51,3 +53,10 @@ impl<I: Iterator> Stream for FromIter<I> {
         Poll::Ready(self.iter.next())
     }
 }
+
+#[cfg(feature = "unstable")]
+impl<T: DoubleEndedIterator> DoubleEndedStream for FromIter<T> {
+    fn poll_next_back(mut self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Option<T::Item>> {
+        Poll::Ready(self.iter.next_back())
+    }
+}