序
本文主要研究一下RocketMQMessageListener的实现机制
示例
Service
RocketMQMessageListener(nameServer "${demo.rocketmq.myNameServer}", topic "${demo.rocketmq.topic.user}", consumerGroup "user_consumer")
public class UserC…
一、向量与矩阵
下面是三个向量 u \boldsymbol u u、 v \boldsymbol v v、 w \boldsymbol w w: u [ 1 − 1 0 ] v [ 0 1 − 1 ] w [ 0 0 1 ] \boldsymbol u\begin{bmatrix}\,\,\,\,1\\-1\\\,\,\,\,0\end{bmatrix}\kern 10pt\boldsymbol v\begin{bmatrix}\,\,\,…