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//----------------------INSTALLATION 安装方法----------------------------
//Added the prefix header file to PROJECT:
//1.Creat a new PCH files and named it with "PrefixHeader.pch"(default name or anything you want) .
//2.Click next and go to Build Settings search Prefix Header.
//3.Double click the blank address and put this address:
//THEN YOU CAN USE THIS IN EVERY FILES IN THIS PROJECT. Good luck.
//如何安装:
//1.创建新pch文件,默认名字即可: "PrefixHeader.pch".
//2.点击下一步再去Build Settings 搜索Prefix Header.
//3.找到Prefix Header并且双击,输入$(SRCROOT)/$(PROJECT_NAME)/PrefixHeader.pch
//现在你可以在项目内任何文件调用宏定义了,祝一切顺利.