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Update btree_map::VacantEntry::insert docs to actually call insert

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It looks like they were copied from the `or_insert` docs. This change
makes the example more like the hash_map::VacantEntry::insert docs.
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Carol (Nichols || Goulding) 2020-05-04 15:49:11 -04:00
parent 649b6323cd
commit d02128f92f
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1 changed files with 5 additions and 6 deletions
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11
src/liballoc/collections/btree/map.rs
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@ -2499,15 +2499,14 @@ impl<'a, K: Ord, V> VacantEntry<'a, K, V> {
/// ///
/// ``` /// ```
/// use std::collections::BTreeMap; /// use std::collections::BTreeMap;
/// use std::collections::btree_map::Entry;
/// ///
/// let mut count: BTreeMap<&str, usize> = BTreeMap::new(); /// let mut map: BTreeMap<&str, u32> = BTreeMap::new();
/// ///
/// // count the number of occurrences of letters in the vec /// if let Entry::Vacant(o) = map.entry("poneyland") {
/// for x in vec!["a","b","a","c","a","b"] { /// o.insert(37);
/// *count.entry(x).or_insert(0) += 1;
/// } /// }
/// /// assert_eq!(map["poneyland"], 37);
/// assert_eq!(count["a"], 3);
/// ``` /// ```
#[stable(feature = "rust1", since = "1.0.0")] #[stable(feature = "rust1", since = "1.0.0")]
pub fn insert(self, value: V) -> &'a mut V { pub fn insert(self, value: V) -> &'a mut V {