在std :: shared_ptr上重载运算符== [英] Overload operator== on std::shared_ptr

问题描述

我正在考虑为特定类型重载std :: shared_ptr的相等性和排序运算符。因此，如果我有以下内容

I was considering overloading the equality and ordering operators of std::shared_ptr for a particular type. So if I have the following

struct Foo { /* Stuff */ };

bool operator==( const std::shared_ptr<Foo>& lhs, const std::shared_ptr<Foo>& rhs )
{
    // Do something reasonable for equality using the Foo instances
}

所以这将意味着平等不再是只是指针相等。

So this would mean equality would no longer be just pointer equality. Is there a downside or some ugly pitfall to doing this?

推荐答案

这完全是非法的，并且被Standard禁止。随之而来的是可怕的鼻恶魔。

It's completely illegal and banned by Standard. Horrible nasal demons ensue.

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