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objective-c textfield 下拉菜单实现(objective-c textfield drop-down menu to achieve)

英文书Beginning Mac OS X Snow Leopard Programming的源码。(Source code of book "Beginning Mac OS X Snow Leopard Programming")

二维码扫描应用demo，精选ios编程学习源码，很好的参考资料。(Two dimensional bar code scanning application demo, select learning IOS programming source code, a good reference.)

排队论 （Queuing Theory）也称随机服务系统理论，就是为解决有关排队问题而发展的一门学科。(Queuing theory (Queuing Theory), also known as stochastic service system theory, a discipline is developed to solve the queuing problem.)

simulink有一个很大的优点是为用户省去了许多重复的代码编写。(simulink have a great advantage for the user save a lot of repetitive coding.)

this is about matlab code for convolutional codes

basic code when you learn objective-c.

及时通信，及时通信，及时通信，及时通信，及时通信，(Timely communication, timely communication, timely communication, timely communication, timely communication,)

object-c 基本语法说明- 利用在xcode上(object-c basic grammer- use xcode tool)

A good guideline for objective c programmers.