c++ - vector::erase with pointer 成员

Question

我正在操纵定义如下的对象 vector :

class Hyp{
public:
int x;
int y;
double wFactor;
double hFactor;
char shapeNum;
double* visibleShape; 
int xmin, xmax, ymin, ymax; 

Hyp(int xx, int yy, double ww, double hh, char s): x(xx), y(yy), wFactor(ww), hFactor(hh), shapeNum(s) {visibleShape=0;shapeNum=-1;};

//Copy constructor necessary for support of vector::push_back() with visibleShape
Hyp(const Hyp &other)
{
    x = other.x;
    y = other.y;
    wFactor = other.wFactor;
    hFactor = other.hFactor;
    shapeNum = other.shapeNum;
    xmin = other.xmin;
    xmax = other.xmax;
    ymin = other.ymin;
    ymax = other.ymax;
    int visShapeSize = (xmax-xmin+1)*(ymax-ymin+1);
    visibleShape = new double[visShapeSize];
    for (int ind=0; ind<visShapeSize; ind++)
    {
        visibleShape[ind] = other.visibleShape[ind];
    }
};

~Hyp(){delete[] visibleShape;};

};

当我创建一个 Hyp 对象、分配/写入内存给 visibleShape 并使用 vector::push_back 将该对象添加到一个 vector 时，一切都按预期工作:visibleShape 指向的数据是使用复制构造函数复制的。

但是当我使用 vector::erase 从 vector 中删除一个 Hyp 时，除了现在指向错误地址的指针成员 visibleShape 之外，其他元素都被正确移动了!如何避免这个问题？我错过了什么吗？

Answer 1

我认为您缺少 Hyp 的重载赋值运算符。