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authorJohn Kugelman <john@kugelman.name>2021-10-11 13:57:38 -0400
committerJohn Kugelman <john@kugelman.name>2021-10-11 13:57:38 -0400
commit06e625f7d582601f5e2ff69ba80f6d3a11632b24 (patch)
treed2b9b88fb89cf0f074feeaa191cb9e22a4a9eee5 /library/alloc/src/vec
parent86d6d2b7389fe1b339402c1798edae8b695fc9ef (diff)
downloadrust-06e625f7d582601f5e2ff69ba80f6d3a11632b24.tar.gz
rust-06e625f7d582601f5e2ff69ba80f6d3a11632b24.zip
Add #[must_use] to as_type conversions
Diffstat (limited to 'library/alloc/src/vec')
-rw-r--r--library/alloc/src/vec/drain.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/library/alloc/src/vec/drain.rs b/library/alloc/src/vec/drain.rs
index fb32d144f87..e643940d017 100644
--- a/library/alloc/src/vec/drain.rs
+++ b/library/alloc/src/vec/drain.rs
@@ -52,6 +52,7 @@ impl<'a, T, A: Allocator> Drain<'a, T, A> {
     /// let _ = drain.next().unwrap();
     /// assert_eq!(drain.as_slice(), &['b', 'c']);
     /// ```
+    #[must_use]
     #[stable(feature = "vec_drain_as_slice", since = "1.46.0")]
     pub fn as_slice(&self) -> &[T] {
         self.iter.as_slice()