Objective C宏附加到字符串 [英] Objective C Macro append to string

问题描述

我认为这是一件非常简单的事情，但由于我是iOS开发和目标C的新手，我无法理解。

I think this is a very simple thing to do, but since I'm new to iOS development and objective C, I can't figure it out.

#define RESTFUL_PATH_PREFIX @"https://gogch.com/gch-restful";
#define LOGIN RESTFUL_PATH_PREFIX @"/login;

我想要结果https://gogch.com/gch-restful/login

但我得到的结果为https://gogch.com/gch-restful

stackoverflow中的其他主题仅提及添加新字符串字符串的开头，例如，

other topics in stackoverflow mention only about adding a new string to the beginning of a string like,

#define DOMAIN "example.com"
#define SUBDOMAIN "test." DOMAIN

推荐答案

删除尾部分号：

#define RESTFUL_PATH_PREFIX @"https://gogch.com/gch-restful";
                                                            ^

然后字符串常量可以由编译器连接：

and then string constants can be concatenated by the compiler:

@"first" @"second"

而不是：

@"first"; @"second"

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