在 C++ 中使用表示变量名称的字符串访问变量值

问题描述

如果标题不清楚，我会尽量澄清我的问题:

If the title was not clear, I will try to clarify what I am asking:

假设我有一个名为 counter 的变量，我知道我可以通过执行以下操作来查看其当前值:

Imagine I have a variable called counter, I know I can see its current value by doing something like:

std::cout << counter << std::endl;

但是，假设我有很多变量，并且直到运行时我不知道要查看哪些变量.

However, assume I have lots of variables and I don't know which I'm going to want to look at until runtime.

有谁知道我可以通过使用变量名称获取变量值的方法，例如:

Does anyone know a way I can fetch the value of a variable by using its name, for example:

std::cout << valueOf("counter") << std::endl;

我觉得能够做到这一点可能会使调试大型复杂项目变得更容易.

I feel being able to do this might make debugging large complex projects easier.

提前感谢您的时间.

更新:所提供的所有答案都是有效且有用的，但重点是 C++ 中不存在反射(阅读推荐的链接后很清楚原因).

Update: All the answers provided are valid and useful, however the main point is that reflection does not exist in C++ (and after reading the link recommended it is clear why).

推荐答案

如前所述，您正在寻找 C++ 中的反射.它没有那个，这个答案解释了原因.

As has been mentioned, you are looking for reflection in C++. It doesn't have that, and this answer explains why.

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