如何调用类Constant Getter功能超载

发布于 2025-02-12 12:42:55 字数 623 浏览 2 评论 0原文

我有一个具有2个过载Getter功能的课程。一个返回参考，另一个返回常数参考。我想知道调用第二个功能的方式。无论我尝试做什么，它总是称为第一个功能。

class MyClass 
{
    private:
        std::vector<int> myArray = { 0, 10 };

    public:
              int& getElement()       { return myArray[0]; }
        const int& getElement() const { return myArray[1]; }
};

int main()
{
    MyClass c;
    
    int& a       = c.getElement();
    const int& b = c.getElement();
    
    std::cout << "a = " << a << std::endl;
    std::cout << "b = " << b << std::endl;
}

结果：

a = 0
b = 0

原文

I have a class with 2 overload getter functions. One returns a reference and the other a constant reference. I would like to know the way to call the second function. Whatever I try to do, it always calls the first function.

class MyClass 
{
    private:
        std::vector<int> myArray = { 0, 10 };

    public:
              int& getElement()       { return myArray[0]; }
        const int& getElement() const { return myArray[1]; }
};

int main()
{
    MyClass c;
    
    int& a       = c.getElement();
    const int& b = c.getElement();
    
    std::cout << "a = " << a << std::endl;
    std::cout << "b = " << b << std::endl;
}

result: