windows system maintains a msg queue, and any process that supports msg will create an thread that have a loop which checks its own msg queue; we can set a callback for it through define an event.                                    // file Eventt.h#i…

var rformElems = /^(?:input|select|textarea)$/i, rkeyEvent = /^key/, rmouseEvent = /^(?:mouse|contextmenu)|click/, rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, rtypenamespace = /^([^.]*)(?:\.(.+)|)$/; function returnTrue() { return true; } functi…

Using the Task Parallel Library (TPL) for Events The parallel tasks library was introduced with the .NET Framework 4.0 and is designed to simplify parallelism and concurrency. The API is very straightforward and usually involves passing in an Action…

oracle的events,是我们在做自己的软件系统时可以借鉴的 Oracle 11g trace eventsORA-10001: control file crash event1ORA-10002: control file crash event2ORA-10003: control file crash event3ORA-10004: block recovery testing - internal errorORA-10005: trace latch operations fo…

When using Tasker, sometimes we want to do some automation on screen e.g. screen or button taps. At present, there are some ways can reach it.  1."Input" action We can use actions in "Input" category(especially "Dpad" action…

NS Simulation: Scheduling Events Simulation time A similation system (such as NS) must have a built-in simulation clock - it represents the "clock" in the real world. You can examine (read) the value of the simulation clock by using the now comm…

Here we want to test a toggle button component, when the button was click, state should change, style should change also. Toggle component: // see this live: https://codesandbox.io/s/GvWpGjKQ import React, {Component} from 'react' import PropTypes fr…

原文:WPF- 模拟触发Touch Events 基于API: [DllImport("User32.dll")] public static extern bool InitializeTouchInjection(uint maxCount = 256, TouchFeedback feedbackMode = TouchFeedback.DEFAULT); [DllImport("User32.dll")] public static extern bool…

点这里进入ABP系列文章总目录 基于DDD的现代ASP.NET开发框架--ABP系列之14.ABP领域层——领域事件(Domain events) ABP是“ASP.NET Boilerplate Project (ASP.NET样板项目)”的简称. ABP的官方网站:http://www.aspnetboilerplate.com ABP在Github上的开源项目:https://github.com/aspnetboilerplate 在C#中,一个类可以定义其专属的事件并且其它类可以注册该…

Nodejs的大部分核心API都是基于异步事件驱动设计的,所有可以分发事件的对象都是EventEmitter类的实例. 大家知道,由于nodejs是单线程运行的,所以nodejs需要借助事件轮询,不断去查询事件队列中的事件消息,然后执行该事件对应的回调函数,有点类似windows的消息映射机制.至于更细的实现环节,可以另行查找资料. 下面介绍EventEmitter的使用. 1.监听事件和分发事件 EventEmitter实例可以使用on或addListener监听事件,emit()方法分发事件…