From d9a89038865117234dac72f287863a78ce81d1c9 Mon Sep 17 00:00:00 2001 From: Arthur Carcano Date: Wed, 3 Apr 2024 13:49:19 +0200 Subject: [PATCH] force exhaustion in iter::ArrayChunks::into_remainder --- library/core/src/iter/adapters/array_chunks.rs | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/library/core/src/iter/adapters/array_chunks.rs b/library/core/src/iter/adapters/array_chunks.rs index 8c68ea114dbd2..8f1744fc5fbb7 100644 --- a/library/core/src/iter/adapters/array_chunks.rs +++ b/library/core/src/iter/adapters/array_chunks.rs @@ -34,9 +34,22 @@ where /// Returns an iterator over the remaining elements of the original iterator /// that are not going to be returned by this iterator. The returned /// iterator will yield at most `N-1` elements. + /// + /// # Example + /// ``` + /// # // Also serves as a regression test for https://github.com/rust-lang/rust/issues/123333 + /// # #![feature(iter_array_chunks)] + /// let x = [1,2,3,4,5].into_iter().array_chunks::<2>(); + /// let mut rem = x.into_remainder().unwrap(); + /// assert_eq!(rem.next(), Some(5)); + /// assert_eq!(rem.next(), None); + /// ``` #[unstable(feature = "iter_array_chunks", reason = "recently added", issue = "100450")] #[inline] - pub fn into_remainder(self) -> Option> { + pub fn into_remainder(mut self) -> Option> { + if self.remainder.is_none() { + while let Some(_) = self.next() {} + } self.remainder } }