目录前言一、自定义监听案例1.1定义事件1.2定义监听1.3定义用户服务（发布事件）1.4测试类1.5测试结果二、事件监听流程2.1容器启动阶段2.2客户端调用阶段三、总结3.1监听流程总结3.2应用场景前言
I\'m looking to suppress the output of one command (in this case, the apply function). Is it possible to do this without using sink()?I\'ve found the described solution below, b开发者_运维问答ut woul
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