小编odm*_*tor的帖子

我有以下代码声明一个重载的类operator[],如下所示:

#include <iostream>
#include <vector>

using namespace std;

class BitSet
{
private:
    int size;
public:
    vector<int> set;
    int &operator [] (int index) {
        return set[index];
    }
    BitSet(int nsize = 0)
    {
        cout << "BitSet creating..." << endl;
        size = nsize;
        initSet(size);
    }
    void initSet(int nsize)
    {
        for (int i = 0; i < nsize; i++)
        {
            set.push_back(0);
        }
    }
    void setValue(int key, int value)
    {
        set[key] = value;
    }
    int getValue(int key, int value)
    {
        return set[key];
    } …