为什么 GitHub C++ 核心指南说全局对象比单例更好？

Question

A global object is often better than a singleton.

我一直认为相反。从那时起，C++ 发生了什么变化？或者这可能只是另一个错字？

Answer 1

这是避免同一个单例的理由guideline collection:

I.3: Avoid singletons

Reason

Singletons are basically complicated global objects in disguise.

Example

class Singleton {
    // ... lots of stuff to ensure that only one Singleton object is created,
    // that it is initialized properly, etc.
};

There are many variants of the singleton idea. That's part of the problem.

我对作者意图的分析：

越简单越好。如果在单例中伪装全局对象不能解决全局对象的问题——就像上面的指导方针所暗示的那样——那么通过伪装使代码复杂化是没有用的。

Why GitHub C++ Core Guideline says that global object better than singleton?