likaiwalkman@csdn - Code Study Area

什么是设计不足 (under-engineering)？ 设计出来的系统复用性差，扩展性不强，不能灵活的应对变化，简言之，设计没到位。设计不足，多半是因为经验有限，设计能力有限。什么是过度设计 (over-engineering)？ 设 计出来的系统比恰到好处要复杂臃肿的多，过度的封装、一堆继承、接口和无用的方法，超复杂的 xml配置文件，简言之，客户需求是要一把杀鸡的刀，你给设计 了

JavaScript is an object-oriented language, but instead of being class-based like Java, C++ or C#, it’s prototype-based. This means that common object-oriented features like, for example, inheritance

JavaScript is a prototype-based language. Understanding how the prototype works is essential to understanding how JavaScript works. Using prototypes is not difficult, but it is different from using

If you know Java and want to quickly get a sense of how to use Python from the very beginning, the following summary can provide you a quick review of data types. You may also find the previouscompari

摘要：Neo4j是一款非常流行的开源图型NoSQL数据库。它完全支持ACID数据库事务属性，由于其良好的图数据模型设计，Neo4j的速度非常快。对于构建性能优异的推荐系统来说，Neo4j的速度要比传统的关系型数据库快1000倍。本文作者Daniel Bartl是一位项目开发者，在这里分享如何使用Spring Data Neo4j来构建推荐系统。Neo4j是一款非常流行的开源图型NoSQ

Question: What is transient variable?Answer: Transient variable can't be serialize. For example if a variable is declared as transient in a Serializable class and the class is written to an ObjectSt

1 Introduction1.1 Why Asynchronous Servlets ?1.1.1 Not Asynchronous IO1.1.2 Asynchronous Waiting1.2 Asynchronous Servlet Examples1.2.1 AJAX Comet Server Push1.2.2 Asynchronous