Objective-C ++和Interface Builder出现问题 [英] Trouble with Objective-C++ and Interface Builder

问题描述

我的视图控制器类使用Objective-C ++类。我发现我必须使用.mm扩展名为C ++ import / includes命名才能正常工作。但是，我正在使用Interface Builder，它不希望我的视图控制器是一个.mm文件。我得到编译器分段错误。有关此类用例的任何建议吗？

My view controller class utilizes an Objective-C++ class. I discovered that I must name it with an .mm extension for C++ imports/includes to work properly. However, I am using Interface Builder, and it does not want to play nicely with my view controller being a .mm file. I get compiler segmented errors. Any suggestions for such a use case?

推荐答案

首先，正如Akaru在他的一条评论中所建议的那样：重命名导入.mm（整个链）的所有文件。

First, as Akaru suggested in one of his comments: rename all implementataion files imported to the .mm (entire chain).

编译错误的另一种可能性：

Another possibilities of compilation errors:

1. 确保不使用c ++保留关键字作为变量名称。示例：我在重命名的.m实现文件中有删除变量。我必须在.mm文件中将其更改为 any_other_delete_varible_name 。最可能的是，变量名称如： friend，delete，typeid 是最大的嫌疑人; - ）

1. Make sure you do not use c++ reserved keywords as variable names. Example: I had delete variable in renamed .m implementation file. I had to change it to any_other_delete_varible_name in .mm file. Most probably, variable names such as: friend, delete, typeid are the biggest suspects ;-)

引自： http://cs.smu.ca /~porter/csc/ref/cpp_keywords.html ：

还有另外 30个保留字不是在C中，是
因此是C ++的新手，在这里它们是：

asm         dynamic_cast  namespace  reinterpret_cast  try
bool        explicit      new        static_cast       typeid
catch       false         operator   template          typename
class       friend        private    this              using
const_cast  inline        public     throw             virtual
delete      mutable       protected  true              wchar_t

2。 C ++编译器对类型转换更严格（例如：我在尝试将NSString分配给id类型时遇到错误等等）。如果有必要，请使用技巧来避免它：声明 NSString 变量 id 本身解决了问题。

2 . C++ compiler is more strict about type casting (for example: I was getting error when trying to assign NSString to id type, etc...) Use tricks to avoid it if there is a must: declaring NSString variable as id itself solved the problem.

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