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Diffstat (limited to '')
| -rw-r--r-- | library/alloc/src/collections/btree/map/entry.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/library/alloc/src/collections/btree/map/entry.rs b/library/alloc/src/collections/btree/map/entry.rs index b6eecf9b0..370b58864 100644 --- a/library/alloc/src/collections/btree/map/entry.rs +++ b/library/alloc/src/collections/btree/map/entry.rs @@ -133,6 +133,16 @@ impl<'a, K: Debug + Ord, V: Debug, A: Allocator + Clone> fmt::Display } } +#[unstable(feature = "map_try_insert", issue = "82766")] +impl<'a, K: core::fmt::Debug + Ord, V: core::fmt::Debug> core::error::Error + for crate::collections::btree_map::OccupiedError<'a, K, V> +{ + #[allow(deprecated)] + fn description(&self) -> &str { + "key already exists" + } +} + impl<'a, K: Ord, V, A: Allocator + Clone> Entry<'a, K, V, A> { /// Ensures a value is in the entry by inserting the default if empty, and returns /// a mutable reference to the value in the entry. |