Method remove

publication/code/chapter10/conshash.rs:78–84

删除一个结点

(&mut self, node: &T)

    // 删除一个结点
    fn remove(&mut self, node: &T) {
        assert!(!self.ring.is_empty());
        for i in 0..self.replicas {
            let key = hash(&(node.to_string() + &i.to_string()));
            self.ring.remove(&key);
        }
    }

    // 获取结点
    fn get(&self, key: u64) -> Option<&T> {