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UINavigationController Push 堆栈动画(The Stack Animation of Push when UINavigationController‘s pushed)

TabBarCustom (所有TabBar之间切换)，精选ios编程学习源码，很好的参考资料。(TabBarCustom (switching between all TabBar), selection of learning IOS programming source code, a good reference.)

iOS中自定义pagecontrol的DEMO，很适用很好(DEMO iOS custom pagecontrol, it applies very well)

稀疏表示，使得数据简单看，而且易懂，是流行的一种数据表示方法(Sparse representation，Make the data look simple, but to understand, is one of the popular data representation method)

Implementation of Transposition Cipher in C

a image for async show

safari调用第三方APP demo 可以直接调试成功 供新手参考 (safari called third-party APP demo success can be directly debug reference for the novice)

产生两不迥频率的信号，并对两信号作复数FFT变换，找出频率为50Hz的信号对其进行能量计算(Two distant signal is not generated frequency, and two signals for complex FFT transform to identify the frequency of 50Hz signal to calculate its energy)

cocos 2d sample using simple tile operations.

Ipad/Iphone 上传和下载文件的源代码，抛砖引玉，希望对大家能有所启迪！(Ipad/Iphone upload and download the source code file, the hope can be an inspiration to everyone!)