Method peek_key

src/common/priority_queue.rs:172–174

MinPQ: Returns a minimum key MaxPQ: Returns a maximum key

(&self)

    /// MinPQ: Returns a minimum key
    /// MaxPQ: Returns a maximum key
    pub fn peek_key(&self) -> Option<&T> {
        self.pq.get(1).and_then(|&i| self.keys[i as usize].as_ref())
    }

    /// Associates key with index i
    pub fn enqueue(&mut self, i: usize, key: T) -> Result<(), &'static str> {