#define vs const并链接到框架 [英] #define vs const and linking against frameworks

问题描述

我有一个非常小的轻量级应用程序，它需要使用一些存储在较大框架中的常量.我不想复制这些常量并将其硬编码到轻量级应用程序中，但是我也不想链接到大型框架来仅获取常量.

I have a really small lightweight application which needs to use some constants that are stored in a larger framework. I don't want to duplicate these constants and hardcode them into the lightweight application but I also don't want to have to link against the large framework to just get the constants.

在头文件中使用static NSString *const定义常量.用#define替换static NSString *const是否可以防止我不得不链接整个框架?

The constants are defined using static NSString *const in a header file. Does replacing the static NSString *const with #define prevent me from having to link against the whole framework ?

说实话，我不太确定链接的工作方式，所以我可能会错误地考虑这个问题

To be honest, I'm not entirely sure how linking works so I'm probably thinking about this incorrectly

推荐答案

是的，如果您#define常量，则只需要#import包含它们的.h文件.

Yes, if you #define the constants you just need to #import the .h file that contains them.

您确实需要注意，#defined常量是文字文本替换-像静态const值一样，它们没有类型"等.

You do need to be aware that the #defined constants are literal text substitutions -- they have no "type", etc, as static const values would.

但是另一个选择(仅适用于整数常量)是定义 C样式枚举在.h文件中.

But another option (for integer constants only) is to define C-style enums in a .h file.

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