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| author | kennytm <kennytm@gmail.com> | 2018-01-30 17:10:58 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-01-30 17:10:58 +0800 |
| commit | 95572df8ebe7d7ae8b2e46e8b62b8f41bc1ee9a1 (patch) | |
| tree | 2cf40206058b1fd2af639154aad2c27f5120b6d1 /src/liballoc | |
| parent | e8868bdc5613de10f83247094be8bbd84a053773 (diff) | |
| parent | 7b4cbbd12d88c8e64d9c7aa1e326c7c78f2a7ed9 (diff) | |
| download | rust-95572df8ebe7d7ae8b2e46e8b62b8f41bc1ee9a1.tar.gz rust-95572df8ebe7d7ae8b2e46e8b62b8f41bc1ee9a1.zip | |
Rollup merge of #47839 - frewsxcv:frewsxcv-map-index, r=QuietMisdreavus
Document that `Index` ops can panic on `HashMap` & `BTreeMap`. Fixes https://github.com/rust-lang/rust/issues/47011.
Diffstat (limited to 'src/liballoc')
| -rw-r--r-- | src/liballoc/btree/map.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/liballoc/btree/map.rs b/src/liballoc/btree/map.rs index b114dc640fb..b320bed5432 100644 --- a/src/liballoc/btree/map.rs +++ b/src/liballoc/btree/map.rs @@ -1748,6 +1748,11 @@ impl<'a, K: Ord, Q: ?Sized, V> Index<&'a Q> for BTreeMap<K, V> { type Output = V; + /// Returns a reference to the value corresponding to the supplied key. + /// + /// # Panics + /// + /// Panics if the key is not present in the `BTreeMap`. #[inline] fn index(&self, key: &Q) -> &V { self.get(key).expect("no entry found for key") |