Method get_mut

rust/src/get_operations.rs:138–144

Get a mutable reference to the value for a key. # Arguments `key` - The key to look up # Returns A mutable reference to the value if the key exists, `None` otherwise. # Examples ``` use bplustree::BPlusTreeMap; let mut tree = BPlusTreeMap::new(16).unwrap(); tree.insert(1, "one"); if let Some(value) = tree.get_mut(&1) { value = "ONE"; } assert_eq!(tree.get(&1), Some(&"ONE")); ```

(&mut self, key: &K)

    /// assert_eq!(tree.get(&1), Some(&"ONE"));
    /// ```
    pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
        let (leaf_id, index, matched) = self.find_leaf_for_key_with_match(key)?;
        if !matched {
            return None;
        }
        self.get_leaf_mut(leaf_id)?.get_value_mut(index)
    }

    /// Try to get a value, returning detailed error context on failure.
    ///