摘要:
消费者.py import celery import time from celery.schedules import crontab backend = 'redis://127.0.0.1:6379/0' broker = 'redis://127.0.0.1:6379/1' cel = c 阅读全文
摘要:
let 和 const 命令 let 声明的变量在代码块内有效 let 不允许重复声明 let 不存在变量提升 console.log(a); var a = 1; // 输出undefined console.log(b); let b = 1; // 报错Uncaught ReferenceEr 阅读全文