类实现一个接口时,它必须实现该接口的所有部分(方法和属性等),效果相当于类要表明:“我同意履行这个接口所定义的协定.” 从抽象类继承实现了“is-a(是一种)”关系,实现接口时一种“implement(实现)”关系,区别在于: 举个例子: 汽车是一种运载工具,它可以实现CanBeBoughtWithABigLoan(可贷巨款购买)这种能力(就像房子一样) /**********************************************************************…

https://msdn.microsoft.com/en-us/library/ms173156.aspx An interface contains definitions for a group of related functionalities that a class or a struct can implement. By using interfaces, you can, for example, include behavior from multiple sources…

目录 第一章 对象导论第二章 一切都是对象第三章 操作符第四章 控制执行流程第五章 初始化与清理第六章 访问权限控制第七章 复用类第九章 接口 第一章 对象导论 1. 对象的数据位于何处? 有两种方式在内存中存放对象: (1)为了追求最大的执行速度,对象的存储空间和生命周期可以在编写程序时确定,这可以通过将对象置于堆栈或者静态存储区域内来实现.这种方式牺牲了灵活性. (2)在被称为堆的内存池中动态地创建对象.在这种方式,知道运行时才知道对象需要多少对象,它们的生命周期如何,以及它们的具体类型.…

One:Introduction: One-1:Before  delving into the  some twenty pattern designs, it's necessary for ME(not for all readers) to get at some philosophies of OOD/OOP. (1)Requests are  the only way to get an object to execute an operation and Operations ar…

Before you learn about dependency injection and Unity, you need to understand why you should use them. And in order to understand why you should use them, you should understand what types of problems dependency injection and Unity are designed to hel…

原文引自http://www.dotnetcurry.com/ShowArticle.aspx?ID=786 1.传统三层结构,相邻两层之间交互: 2.如果使用EntityFramework则View层直接与Db层交互,如在Controller中定义DbContext操作数据库,属于紧耦合: 3.解决2中紧耦合的方法:1)定义IRepository(CRUD),此接口在对应数据层实现(DbContext):2)Controller中只使用IRepository实例出的相应Repository,进…

New HTML5 API's (Application Programming Interfaces) The most interesting new API's are: HTML Geolocation HTML Drag and Drop HTML Local Storage HTML Application Cache HTML Web Workers HTML SSE…

https://msdn.microsoft.com/en-us/library/kwtft8ak(v=vs.140).aspx It is often useful to define interfaces either for generic collection classes, or for the generic classes that represent items in the collection. The preference偏爱,优先权 for generic classe…

Functions in Java Prior to the introduction of Lambda Expressions feature in version 8, Java had long been known as a purely object-oriented programming language. "Everything is an Object" is the philosophy deep in the language design. Objects a…

This is a tutorial on how to program the Serial Ports on your Linux box.Serial Ports are nice little interfaces on the PC which helps you to interface your embedded system projects using a minimum number of wires.In this tutorial we will write a smal…