如何在C++中使类对象成为检查条件？

class MyClass {
public:
    operator bool() const {
        // 在这里添加检查条件的代码
        return some_condition;
    }
private:
    bool some_condition;
};

class MyClass {
public:
    bool operator !() const {
        // 在这里添加检查条件的代码
        return !some_condition;
    }
private:
    bool some_condition;
};

class MyClass {
public:
    bool operator ==(const MyClass& other) const {
        // 在这里添加检查条件的代码
        return some_condition == other.some_condition;
    }
private:
    bool some_condition;
};