Method peek

datafusion/execution/src/cache/lru_queue.rs:92–94

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

(&self, key: &K)

    /// Returns a reference to value mapped by `key`, if it exists.
    /// Does not affect the queue order.
    pub fn peek(&self, key: &K) -> Option<&V> {
        self.data.get(key).map(|(_, value)| value)
    }

    /// Checks whether there is an entry with key `key` in the queue.
    /// Does not affect the queue order.