NSString.m

说明：  matlab教程，希望大家一起来学习，我看多好几遍了，非常不错。(matlab tutorial I hope everyone will work together to learn, I can see how good a few times, and very good.)

matlab 灰色理论函数，自己写的灰色理论函数，可以用来预测未来的数据。(matlab gray theory function)

自定义风格的SegmentedControl，IOS编程学习源码，很好的参考资料。(A custom style SegmentedControl, learning IOS programming source code, a good reference.)

很实用的IPHONE完美实现自定义软键盘(IPHONE perfect realization of very useful custom keyboard)

How to check the url connections. Pretty straight forward.

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.)

该程序为电子离合器的程序,可以实现有无按纽信号或者刹车信号等判断(The program procedures for the electronic clutch, you can achieve any signal or brake button signals to determine)

tab bar controller 自定义颜色和演示demo，精选ios编程学习源码，很好的参考资料。(Tab bar controller custom colors and demonstration of demo, selection of learning IOS programming source code, a good reference.)

An IOS sample Program

说明：  XML解析，功能很强大，大家可以参照下，肯定会有用(XML Parser，powerful functions，you can learn something from it easily.It must be useful to you!)