redis.exceptions.ConnectionError: Error 99 connecting to 127.0.0.1:6379. Cannot assign requested address · Issue #219 · django/channels · GitHub https://github.com/django/channels/issues/219 This is a problem with your system/kernel socket setup, not…

/*********************************************************************************** * libserialport: cross-platform library for accessing serial ports * 说明: * 很多时候,我们经常需要写一下串口方面的调试工具,象征一下我们的知识产权, * 但是对于很多人来说,也许仅仅关心上层的软件,并不关心驱动上的事,所以使用串 * 口库就变成了一种很不错…

Unable to extract 64-bitimage. Run Process Explorer from a writeable directory When we run Process Explorer on window system , we may find this issue, because the current login account could not create the file "ProcessExplorer64.exe" into the U…

在java中继承Thread,线程启动有两中方法:start()和run().下面简单介绍一下两者的区别. start():启动一个线程,此时线程处于就绪状态,然后调用Thread对象的run()方法:不能多次启动一个线程.在main方法执行结束后,由于start()方法创建的线程没有运行结束,因此主线程未能退出,直到线程thread也执行完毕.这里要注意,默认创建的线程是用户线程(非守护线程).多次调用start()方法会出现java.lang.IllegalThreadStateExcept…

原文:http://www.andyqian.com/2018/03/07/java/javaSmallDetail/ 前言 今天我们一起来做个简单有趣的实验.熟悉Java的童鞋,对ScheduledExecutorService类应该不陌生.不记得的童鞋,先回忆下. 实验一 我们先看下下面这段简单的代码.如下: 1234567891011121314 public class ExecutoryServiceTest { private static ScheduledExecutorServ…

转自:https://blog.csdn.net/guijiaoba/article/details/54615036 Kotlin之let,apply,with,run函数区别 重新整理 重新整理了各种函数的区别,请移步到这里. 以下作废 很长一段时间内都一直使用Kotlin这门语言,也只是纯粹使用简单语法,最近有时候写的代码,编辑器自动提示使用let等函数,然后就专门花点时间研究了下. let 首先let()的定义是这样的,默认当前这个对象作为闭包的it参数,返回值是函数里面最后一行,或者指…

Features Pricing Add-ons Resources | Log in Sign up   Guides & Tutorials Web Server Guides Nginx How to Configure Nginx for Optimized Performance   How to Configure Nginx for Optimized Performance Updated Wednesday, September 9th, 2015 by LinodeContr…

UNIX or Linux operating system has become default Server operating system and for whichever programming job you give interview you find some UNIX command interview questions there. These UNIX command interview questions are mostly asked during Java d…

 Oracle Database (RDBMS) on Unix AIX,HP-UX,Linux,Mac OS X,Solaris,Tru64 Unix Operating Systems Installation and Configuration Requirements Quick Reference (8.0.5 to 11.2) (文档 ID 169706.1) _afrLoop=509703735454401&id=169706.1&_afrWindowMode=0&…

最近准备系统学习网络相关的知识,主要学习tcp/ip, websocket 知识. 原文地址:http://www.thegeekstuff.com/2011/11/tcp-ip-fundamentals/ Have you ever wondered how your computer talks to other computers on your local LAN or to other systems on the internet? Understanding the intrica…