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  "contentMarkdown": "# Unity与C#预处理指令\n\n> 创建时间：2020/5/20 18:31\n\n## Unity&C预处理指令\n## 预处理指令（条件编译）\n\n预处理器指令指导编译器在实际编译开始之前对信息进行预处理。\n所有的预处理器指令都是以 # 开始。且在一行上，只有空白字符可以出现在预处理器指令之前。预处理器指令不是语句，所以它们不以分号（;）结束。\nC# 编译器没有一个单独的预处理器，但是，指令被处理时就像是有一个单独的预处理器一样。在 C# 中，预处理器指令用于在条件编译中起作用。与 C 和 C++ 不同的是，它们不是用来创建宏。一个预处理器指令必须是该行上的唯一指令。\n\n```csharp\nclass Program\n{\n    static void Main(string[] args)\n    {\n        dynamic dyn = 1;\n        object obj = 1;\n        dyn = dyn + 3;\n        //obj = obj + 3; 报错\n\n        // Rest the mouse pointer over dyn and obj to see their\n        // types at compile time.\n        System.Console.WriteLine(dyn.GetType());\n        System.Console.WriteLine(obj.GetType());\n    }\n}\n\n```\n\n### Conditional特性\n\n可以把输出日志的函数使用Conditional特性来标记上，只有在Unity编辑器中开启了指定的宏命令，这个输出日志的函数才能被编译，即可很方便地开关日志。\n`[Conditional(\"EnableLog\")]`\n需要在Unity编辑器中添加上EnableLog宏命令，该方法才能被编译。\n\n## Unity自带的一些宏定义\n\nUNITY_EDITOR Unity编辑器\nUNITY_EDITOR_WIN Windows 操作系统.\nUNITY_EDITOR_OSX macos操作系统\nUNITY_STANDALONE_OSX 专门为macos（包括Universal, PPC，Intel architectures）平台的定义\nUNITY_STANDALONE_WIN 专门为windows平台的定义\nUNITY_STANDALONE_LINUX 专门为Linux平台的定义\nUNITY_STANDALONE 独立平台 (Mac OS X, Windows or Linux).\nUNITY_WII WII 游戏机平台\nUNITY_IOS iOS系统平台\nUNITY_IPHONE iPhone\nUNITY_ANDROID android系统平台\nUNITY_PS4 ps4平台\nUNITY_SAMSUNGTV 三星TV平台\nUNITY_XBOXONE Xbox One 平台\nUNITY_TIZEN Tizen 平台\nUNITY_TVOS Apple TV 平台\nUNITY_WSA #define directive for Universal Windows Platform. Additionally, NETFX_CORE is defined when compiling C# files against .NET Core and using .NET scripting backend.\nUNITY_WSA_10_0 #define directive for Universal Windows Platform. Additionally WINDOWS_UWP is defined when compiling C# files against .NET Core.\nUNITY_WINRT UNITY_WSA.\nUNITY_WINRT_10_0 UNITY_WSA_10_0\nUNITY_WEBGL #define directive for WebGL.\nUNITY_FACEBOOK faceBook平台(WebGL or Windows standalone).\nUNITY_ADS 调用广告方法，版本 5.2 以后\nUNITY_ANALYTICS 调用unity分析服务，版本5.2以后\nUNITY_ASSERTIONS 控制指令的过程\n\nUNITY_5 unity5版本, 包含所有的5.x.y版本\nUNITY_5_0 Unity5.0版本,包含所有的5.0.x版本\nUNITY_5_0_1 Unity5.0.1版本\n\n## 自定义宏定义\n\nFile - Build Settings - Player Settings - Other Settings\n多个用分号隔开\n"
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