此系统为支付宝客户端与服务器端在线支付系统开发的源代码，非常适合开发在线支付类的商业app借鉴。-This system to pay Po client and server-side online payment system developed source code, and is very suitable for the development of online payment class commercial app draw.

移动开发关于iphone APP应用程序开发的相关安全问题，非常详细的讲解了需要注意的安全问题，非常实用-Mobile development on the iphone APP application development related security issues, a very detailed explanation of the need to pay attention to security issues, very practical

iOS编程 书籍的源码，很详细，都可以完美运行，要学习的人抓紧了啊-iOS programming book source, very detailed, can be perfectly run, people pay close attention to learn ah