Liskov Principle: if S is a subtype of Type T, then any objects of type T may be repalced by objects of type S without altering any of the properties of T;that is, if B inherits from A, then B should be a A!!!usaully we adopt inheritance for two reas…

出发点 http://www.tuicool.com/articles/A7VrE33 阅读中文版本<编写质优代码的十个技巧>,对于我编码十年的经验,也有相同感受, 太多的坑趟过,太多的经历走过,对良好编码的技巧,只能说更加心有灵犀. 下面从英文原版阅读,结合自己的理解,尝试注解下作者的观点. 注解 -- 原文见下网址 https://cdiggins.github.io/blog/programming-tips.html 10 Tips for Writing Better Code 注:…

代码位于frameworks/base/services/core/java/com/android/server/am/,一共有七十个文件. Java源码位于package com.android.server.am里 下面是消息处理部分 处理应用崩溃消息 14223 /** 14224 * Used by {@link com.android.internal.os.RuntimeInit} to report when an application crashes. 14225 * The…

Inheritance disadvantage Unlike method invocation, inheritance violates encapsulation. Since you don't know the super class implementation which may involve some unpredictable calling between different methods of super class. And it is difficult to m…

In this chapter I present classes to represent playing cards, decks of cards, and poker hands.If you don't play poker, you can read about it at http://en.wikipedia.org/wiki/Poker, but you don’t have to; I’ll tell you what you need to know for the exe…

转自: http://www.mkyong.com/spring/spring-bean-configuration-inheritance/ In Spring, the inheritance is supported in bean configuration for a bean to share common values, properties or configurations. A child bean or inherited bean can inherit its pare…

In Spring, the inheritance is supported in bean configuration for a bean to share common values, properties or configurations. A child bean or inherited bean can inherit its parent bean configurations, properties and some attributes. In additional, t…

JavaScript is a class-free, object-oriented language, and as such, it uses prototypal inheritance instead of classical inheritance. This can be puzzling to programmers trained in conventional object-oriented languages like C++ and Java. JavaScript's…

Memory Layout for Multiple and Virtual Inheritance(By Edsko de Vries, January 2006)Warning. This article is rather technical and assumes a good knowledge of C++ and some assembly language.In this article we explain the object layout implemented by gc…

<Item 36> Never redefine an inherited non-virtual function 1.如下代码通过不同指针调用同一个对象的同一个函数会产生不同的行为The reason for this two-faced behavior is that non-virtual functions like B::mf and D::mf are statically bound (see Item 37). That means that because pB is d…