Method get

datafusion/execution/src/cache/lru_queue.rs:83–88

Returns a reference to value mapped by `key`, if it exists. If the entry exists, it becomes the most recently used.

(&mut self, key: &K)

    /// Returns a reference to value mapped by `key`, if it exists.
    /// If the entry exists, it becomes the most recently used.
    pub fn get(&mut self, key: &K) -> Option<&V> {
        if let Some(value) = self.remove(key) {
            self.put(key.clone(), value);
        }
        self.data.get(key).map(|(_, value)| value)
    }

    /// Returns a reference to value mapped by `key`, if it exists.
    /// Does not affect the queue order.