In this lesson, we will cover Interfaces and Mixins. Interfaces act as a contract containing properties and methods that a class must define once it “implements” this interface. Mixins are Dart’s way of sharing properties and methods from multiple cl…

继承可以达到代码的复用,利于维护和扩展. sencha touch 中可以通过 extend 实现单继承,通过 mixins 实现多继承. mixins 也很像实现接口,不过这些接口的方法已经实现了,不用自己写了.当然也可以复写基类的方法. extend 继承 Ext.define('Person', { constructor : function(name, age) { this.name = name; this.age = age; }, walk : function() { con…

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…

原文链接:http://blog.csdn.net/lovelyelfpop/article/details/50853591 英文原文:Using Plugins and Mixins in Your Sencha Apps 概述 当须要扩展一个类的功能的时候,通常都会直接将新功能写入派生类,然而,假设多个组件都须要实现某个功能,那最有效的方式就是将它定义为一个插件或Mixin.插件和Mixin都是用来将额外功能加入到其它类的类.在本文,将介绍这些类是什么,他们之间的差别,以及他们的原理.在S…

http://wiki.apache.org/tomcat/HowTo Contents Meta How do I add a question to this page? How do I contribute to Tomcat's documentation? Installation How do I set up and run Tomcat on Macintosh OS X? How do I set up and run Tomcat on Solaris 10? How do…

官网教程 https://www.dartlang.org/guides/language/language-tour dart是一个单线程的语言,没有多线程 Final and const If you never intend to change a variable, use final or const, either instead of var or in addition to a type. A final variable can be set only once; a con…

原文 关于C#你应该知道的2000件事 下面列出了迄今为止你应该了解的关于C#博客的2000件事的所有帖子. 帖子总数= 1,219 大会 #11 -检查IL使用程序Ildasm.exe d #179 - 什么是大会? #180 - CLR按需加载程序集 #485 - 项目参考和附属组件 #486 - 忽略不必要的项目引用 #705 - 应用程序和类库 #706 - 应用程序域启用应用程序隔离 基本 #1 - Main()签名的样子 #2 - 最小的C#程序 #3 - 谁设计了C#? #4 -…

Generics The term "generic" means "pertaining or appropriate to large groups of classes." While using someone else's generic type is fairly easy, when creating your own you will encounter a number of surprises. Comparison with C++ Unde…

[This post is based on a document authored by Ben Grover (a senior developer at Microsoft). It is our intention to integrate this information into the MVC 3 documentation on MSDN. We hope to hear from you and welcome any suggestions you might have.]…

An alternative, that may get you rejected from the app store, is to use WebScriptObject. These APIs are public on OSX but are not on iOS. You need to define interfaces to the internal classes. @interface WebScriptObject: NSObject @end @interface WebV…