普通版可以实现在1秒内的多个错误提示只显示第一个function debounce(fn, wait) { let timerId = null let flag = true return function () { clearTimeout(timerId) if (flag) { fn.apply(this, arguments) flag = false } timerId = setTimeout(() => { flag = true }, wait) } } const au...
注意MQTT协议中有三种身份:发布者(Publish)、代理(Broker)(服务器)、订阅者(Subscribe)。首先必须要需要搭建MQTT服务器,才能进行后续发布和订阅代码操作。搭建MQTT服务器ActiveMQ 5 下载地址:http://activemq.apache.org/index.html下载后进入apache-activemq-5.16.0-bin\apache-activemq-5.16.0\bin\win64,在cmd里运行activemq.bat即可启动MQTT服务器。进入http://127.0.0.1:8161/admin/ 账号密码均为admin,若能成功...
import os import time import multiprocessing from logging.handlers import TimedRotatingFileHandler from logging import FileHandler lock = multiprocessing.Lock() class SafeLog(TimedRotatingFileHandler): def __init__(self, *args, **kwargs): super(SafeLog, self).__init__(*args, **kwarg...