问题描述
我有一个包含二维数组的类。我需要
重载类似[] []运算符的东西，以便我能够通过类对象访问
内部数组元素。例如：
矩阵a =新矩阵（10,10）;
a [1] [1] = 6;
这可能吗？如何在c ++中使用
类来模拟二维数组？谢谢
-Andre
没有运算符[] []，只有运算符[]。你可以用代理类做你想要的b $ b想要的东西，比如这个
类代理
{
public：
double operator []（int j）const;
double& operator []（int j）;
};
class Matrix
{
public ：
const代理运算符[]（int i）const;
代理运算符[]（int i）;
};
我希望你明白这个想法，你在你的Matrix对象上重载operator []到
返回另一个类（Proxy类），然后重载operator [] on
代理类返回一个Matrix元素。
john
没有运算符[] []，只有运算符[]。你可以用代理类来做你想要的东西，比如这个类代理
{
公共：
double operator []（int j ）const;
double& operator []（int j）;
};
类Matrix
公共：
const代理运算符[]（int i）const;
代理运算符[]（int i）;
};
我希望你明白这个想法，你在Matrix对象上重载operator []以返回另一个class（Proxy类），然后在
代理类上重载operator []以返回Matrix元素。
john
没有运算符[] []，只有运算符[]。你可以用代理类来做你想要的东西，比如这个类代理
{
公共：
double operator []（int j ）const;
double& operator []（int j）;
};
类Matrix
公共：
const代理运算符[]（int i）const;
代理运算符[]（int i）;
};
我希望你明白这个想法，你在Matrix对象上重载operator []以返回另一个class（Proxy类），然后在
代理类上重载operator []以返回Matrix元素。
john
Hi,
I have a class which contains a two-dimensional array. I need to
overload something like the [][] operator so that I''m able to access the
internal array elements via the class object. For example:
Matrix a = new Matrix(10,10);
a[1][1] = 6;
Is this possible? How can I simulate a two dimensional array using a
class in c++? Thanks
-Andre
There is no operator[][], there is only the operator[]. You can do what you
want with a proxy class, something like this
class Proxy
{
public:
double operator[](int j) const;
double& operator[](int j);
};
class Matrix
{
public:
const Proxy operator[](int i) const;
Proxy operator[](int i);
};
I hope you get the idea, you overload operator[] on your Matrix object to
return another class (the Proxy class), you then overload operator[] on the
proxy class to return a Matrix element.
john
There is no operator[][], there is only the operator[]. You can do what you
want with a proxy class, something like this
class Proxy
{
public:
double operator[](int j) const;
double& operator[](int j);
};
class Matrix
{
public:
const Proxy operator[](int i) const;
Proxy operator[](int i);
};
I hope you get the idea, you overload operator[] on your Matrix object to
return another class (the Proxy class), you then overload operator[] on the
proxy class to return a Matrix element.
john
There is no operator[][], there is only the operator[]. You can do what you
want with a proxy class, something like this
class Proxy
{
public:
double operator[](int j) const;
double& operator[](int j);
};
class Matrix
{
public:
const Proxy operator[](int i) const;
Proxy operator[](int i);
};
I hope you get the idea, you overload operator[] on your Matrix object to
return another class (the Proxy class), you then overload operator[] on the
proxy class to return a Matrix element.
john
这篇关于重载[] []的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！